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Sample records for chest radiographic findings

  1. Chest radiographic findings of leptospirosis

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    Kim, Mee Hyun; Jung, Hee Tae; Lee, Young Joong; Yoon, Jong Sup [Hallym University College of Medicine, Seoul (Korea, Republic of)

    1986-04-15

    1. A study on chest radiographic findings of 54 cases with pneumonia like symptoms was performed. Of 54 cases, 8 cases were confirmed to be leptospirosis and 7 cases were leptospirosis combined with Korean hemorrhagic fever. 2. Of 8 cases of leptospirosis, 4 cases showed abnormal chest radiographic findings: acinar nodular type 2, massive confluent consolidation type 2. Of 7 cases of leptospirosis combined with Korean hemorrhagic fever: acinar nodular type 3, massive confluent consolidation type 1, and increased interstitial markings type 1 respectively. 3. It was considered to be difficult to diagnose the leptospirosis on chest radiographic findings alone, especially the case combined with Korean hemorrhagic fever.

  2. Chest radiographic findings in acute paraquat poisoning

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    Na, Gyeong Gyun; Lee, Mi Sook; Kim, Hee Jun; Sun, In O [Presbyterian Medical Center, Jeonju (Korea, Republic of)

    2016-01-15

    To describe the chest radiographic findings of acute paraquat poisoning. 691 patients visited the emergency department of our hospital between January 2006 and October 2012 for paraquat poisoning. Of these 691, we identified 56 patients whose initial chest radiographs were normal but who developed radiographic abnormalities within one week. We evaluated their radiographic findings and the differences in imaging features based on mortality. The most common finding was diffuse consolidation (29/56, 52%), followed by consolidation with linear and nodular opacities (18/56, 32%), and combined consolidation and pneumomediastinum (7/56, 13%). Pleural effusion was noted in 17 patients (30%). The two survivors (4%) showed peripheral consolidations, while the 54 patients (96%) who died demonstrated bilateral (42/54, 78%) or unilateral (12/54, 22%) diffuse consolidations. Rapidly progressing diffuse pulmonary consolidation was observed within one week on follow-up radiographs after paraquat ingestion in the deceased, but the survivors demonstrated peripheral consolidation.

  3. Pulmonary embolism findings on chest radiographs and multislice spiral CT

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    Coche, Emmanuel; Goncette, Louis [Department of Radiology, Cliniques Universitaires Saint-Luc, Universite Catholique de Louvain, Avenue Hippocrate 10, 1200, Brussels (Belgium); Verschuren, Franck [Department of Intensive Care and Emergency Medicine, Cliniques Universitaires Saint-Luc, Universite Catholique de Louvain, Avenue Hippocrate 10, 1200, Brussels (Belgium); Hainaut, Philippe [Department of Internal Medicine, Cliniques Universitaires Saint-Luc, Universite Catholique de Louvain, Avenue Hippocrate 10, 1200, Brussels (Belgium)

    2004-07-01

    Multislice spiral CT is becoming an increasingly important tool for diagnosing pulmonary embolism. However, in many instances, a chest radiograph is usually performed as a first-line examination. Many parenchymal, vascular, and other ancillary findings may be observed on both imaging modalities with a highly detailed depiction of abnormalities on multislice CT. A comprehensive review of chest radiograph findings is presented with side-by-side correlations of CT images reformatted mainly in the frontal plane. (orig.)

  4. Pulmonary embolism findings on chest radiographs and multislice spiral CT.

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    Coche, Emmanuel; Verschuren, Franck; Hainaut, Philippe; Goncette, Louis

    2004-07-01

    Multislice spiral CT is becoming an increasingly important tool for diagnosing pulmonary embolism. However, in many instances, a chest radiograph is usually performed as a first-line examination. Many parenchymal, vascular, and other ancillary findings may be observed on both imaging modalities with a highly detailed depiction of abnormalities on multislice CT. A comprehensive review of chest radiograph findings is presented with side-by-side correlations of CT images reformatted mainly in the frontal plane.

  5. Findings chest radiograph and CT in mediastinitis: effcacy of CT in patients with delayed diagnosis

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    Son, Eun Ju; Hong, Yong Kook; Choe, Kyu Ok [Yonsei Univ. College of Medicine, Seoul (Korea, Republic of)

    1999-01-01

    To analyse the causes the radiologic findings in patients with mediastinitis and to evaluate the efficacy of chest CT scanning in patients with delayed diagnosis. Seventeen patients with histopathologically(n=15) or clinically diagnosed(n=2) mediastinitis were involved in this study. Eleven of the former group underwent surgery, and in four, tube drainage was performed. All underwent chest radiography and CT scanning, and in seven patients, the causes of delayed diagnosis were analysed. The most common cause of mediastinitis was esophageal rupture(n=11). Others were extension from neck abscess to the mediastinum(n=3), complications after a Benthall procedure(n=1), tuberculous lymphadenitis(n=1) and mycotic aneurysm(n=1). Patients with esophageal rupture suffered from underlying diseases such as esophageal cancer(n=2), iatrogenic esophageal rupture(n=2), Boerhaave's syndrome(n=2), and esophagitis(n=1). In patients with neck abscess (n=3), each was secondary to infected cystic hygroma, Ludwig angina, or deep neck infection, respectively. On chest CT, patients with esophageal rupture(n=11) had an abscess in the posterior mediastinum ; nine abscesses extended to the cervical area along the retropharyngeal space, and the patient with Ludwig angina had an abscess involving all compartments of the mediastinum. Among the total of 17 patients, diagnostic delays were found in seven, while five had spontaneous esophageal ruptures and two suffered complications after a Benthall procedure and Tbc lymphadenitis, respectively. The causes of diagnostic delay varied. Among seven patients, pnevmonia was initially diagnosed in two, who were treated ; one had multiorgan failure, and one was suffering from pericardial effusion and lung abscess. In three other patients, chest radiographs initially showed non-specific findings, leading to delayed CT examination. The most common cause of mediastinitis was esophageal rupture, and in these patients, chest radiographs and clinical

  6. Chest Radiographic Findings of Novel Swine-Origin Influenza A (H1N1) Virus Infection in Children

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    Bae, So Young; Hong, Eun Sook; Paik, Sang Hyun; Park, Seong Jin; Cha, Jang Gyu; Lee, Hae Kyung [Dept. of Radiology, Soonchunhyang University Bucheon Hospital, Bucheon (Korea, Republic of); Jang, Yun Woo [Dept. of Radiology, Soonchunhyang University Hospital, Seoul (Korea, Republic of)

    2011-06-15

    To analyze chest radiographic findings in children infected with laboratory confirmed novel swine-origin influenza A (H1N1) virus. Three hundred seventy-two out of 2,014 children with laboratory confirmed H1N1 infection and who also underwent a chest radiograph from September to November 2009 were enrolled in this study. Patients were divided into in-patients, out-patients, and patients with co-infections and further subdivided into with underlying disease and without underlying disease as well as age (<2 years old, 2-5 years, 5-10 years, 10-18 years old). The initial radiographs were evaluated for radiographic findings and the anatomic distribution of abnormalities. The initial radiographs were abnormal in 154 (41.39%) patients. The predominant radiographic findings were peribronchial wall opacity found in 85 (22.84%) patients and hyperinflation observed in 69 (18.54%) patients. Further, 75 (71.42%) patients exhibited central predominance and the right lower lung zone was also commonly involved. There were statistically significant differences in the radiological findings between in-patient and out-patient groups. However, there were no significant differences in the radiographic findings between in-patients and the co-infection group with respect the presence of underlying disease and age. Initial radiographs of children with laboratory confirmed H1N1 virus were abnormal in 41.39% of cases. The common radiographic findings included peribronchial opacities, hyperinflation, lower lung zonal distribution, and central predominance

  7. Chest radiographic staging in allergic bronchopulmonary aspergillosis: relationship with immunological findings.

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    Kiely, J L

    2012-02-03

    The question of whether a chest radiographic severity staging system could be correlated with standard blood\\/serum diagnostic indices in allergic bronchopulmonary aspergillosis (ABPA) was addressed in 41 patients. Asthma and positive Aspergillus fumigatus (AF) serology were considered essential diagnostic inclusion criteria. Eosinophil count, serum immunoglobulin (Ig)E and immediate skin hypersensitivity were also tested to grade patients as "definite" or "likely" ABPA. Definite cases had all five of these factors present, whereas likely cases had three or more. Chest radiographs were examined by experienced radiologists blinded to the clinical data. The six-stage radiographic score (0-5) was based on the severity and duration of changes seen: stage 0: normal; stage 1: transient hyperinflation; stage 2: transient minor changes; stage 3: transient major changes; stage 4: permanent minor changes; and stage 5: permanent major changes. Significant positive correlations (p<0.05) were observed between peak AF titres (expressed as an index), peak eosinophil count and radiographic severity stage. When considered as subgroups, these correlations approached, but did not reach, significance for the group with "likely" ABPA (n=28), but in the group with definite ABPA (n=13), there was a high correlation between radiographic score and peak AF index (r=0.59), as well as peak eosinophil count (r=0.62). This study suggests that the peak Aspergillus fumigatus index and eosinophil counts correlate best with the severity of radiographic stages in allergic bronchopulmonary aspergillosis. This chest radiographic staging system may be useful in the clinical assessment and management of patients with allergic bronchopulmonary aspergillosis, particularly in those patients with more severe radiographic stages.

  8. Incidental finding of unilateral isolated aplasia of serratus anterior muscle and winged scapula on chest radiograph: A case report

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    Choi, Joon Sung; Park, Hyun Jin; Ko, Jeong Min [Dept. of Radiology, St. Vincent' s Hospital, College of Medicine, The Catholic University of Korea, Suwon (Korea, Republic of)

    2014-10-15

    The isolated aplasia of the serratus anterior muscle with winging of scapula is very rare, and only a few cases are reported. Here, we present a case of a 30-year-old Korean male who initially presented with a left flank pain. His physical exam did not show any significant finding in his right shoulder. However, his chest radiograph showed absence of right serratus anterior muscle and slightly elevated and medially rotated right scapula. Subsequent CT scan showed the right serratus anterior muscle aplasia and medial winging of the right scapula. This case is unique in two aspects. First, the combination of abnormalities is different from the typical congenital abnormalities involving shoulder girdle, such as Sprengel deformity or Poland syndrome. Secondly, this was incidentally diagnosed with chest radiograph, without clinical impression. Careful reading of chest radiograph can help the radiologists to detect such clinically silent abnormalities.

  9. Lung parenchymal change after the resolution of adenovirus pneumonia : chest radiographs and high-resolution CT findings

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    Yoon, Jung Hee; Kim, Joung Sook; Kim, Chang Kuen; Kang, Seung Pyung; Lee, Soo Hyun; Hur Gham [Inje Univ. Sanggye Paik Hospital, Seoul (Korea, Republic of)

    1998-07-01

    To evaluate lung parenchymal change as seen on chest radiographs and high-resolution CT (HRCT) after the resolution of adenovirus pneumonia (a common cause of lower respiratory infection in infants and children),and the usefulness of HRCT during follow-up. Material and Methods : Four to 13(mean, 8) months after recovery, ten patients infected with adenovirus pneumonia underwent HRCT and chest radiographs. Eight were boys and two were girls, and their mean age was 26(range, 14-45) months. Adenovirus pneumonia had been confirmed by viral isolation in culture or serologic test. CT scanning was performed during quiet breathing ; collimation was 2 mm and the interval from apex to diaphragm was 5-10 mm. Lung settings were 1600 HU (window width) and -700 HU(level). CT findings were assessed and compared with chest radiographs by two chest radiologists, who reached a consensus. The patients were clinically followed up for one year. Result : On chest radiographs, hyperlucent lung was seen in 8 of 10 patients (80%) ; in one other there was partial collapse, and in one, findings were normal. The most common HRCT finding was a mosaic pattern of lung attenuation with decreased pulmonary vascularity in the area of lower attenuation ; this was seen in 8 of 10 patients (80%). Other findings were partial collapse, bronchiectasis, and bronchial wall thickening, each seen in two patients, and reticulonodular density, seen in one. In two patients HRCT findings were normal ; in one of these, chest findings were normal but a mosaic pattern of lung attenuation was found in all lobes. During follow-up, three patients wheezed continuously. Conclusion : In cases of adenovirus pneumonia, HRCT demonstrated more specific parenchymal change than did chest radiographs ; a mosaic pattern of lung attenuation was seen, with decreased pulmonary vascularity in areas of lower attenuation ; bronchiectasis,bronchial wall thickening, and reticulo-odular density were also noted. These findings were

  10. Finding on a chest radiograph: A dangerous complication of subclavian vein cannulation

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    Srinivasan Nataraj

    2010-01-01

    Full Text Available Cannulation of the subclavian vein has its inherent risks. Post procedure chest radiograph is one of the investigations done to rule out immediate complications. Unless the clinician is aware as to what to look for in the radiograph, some of the dangerous complications can be overlooked. Accidental subclavian artery cannulation is identified immediately by color and jet of the blood. Also the position of the catheter tip has to be confirmed by obtaining the arterial pressure tracing using a pressure transducer. Non availability of Doppler ultrasound and pressure transducer are limiting factors for immediate confirmation of proper catheter placement. Also, in patients with severe hypotension and reduced oxygen content of blood, accidental arterial puncture may not show the characteristic bright red pulsatile back flow of arterial blood. In these situations radiography can be used as a diagnostic tool to rule out subclavian artery cannulation.

  11. FINDINGS OF CHEST RADIOGRAPH AND SPIRAL COMPUTED TOMOGRAPHY IN SWYER-JAMES SYNDROME

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Objective To evaluate the value of X-ray and spiral computed tomography (SCT) in the diagnosis of SwyerJames syndrome (SJS).Methods A total of 28 patients, 12 males and 16 females, were studied retrospectively. Ages ranged from 11 to 57 years, the mean age was 32 years. All patients underwent inspiratory chest X-ray films, 5 with expiratory chest films and 1 with bronchogram. Furthermore, inspiratory and expiratory SCT scans were performed. The SCT findings were analyzed and compared with X-ray films.Results SCT demonstrated 56 lobes with hyperlucency and diminished vascularity. The size of 51 lobes were smaller and 5 were normal. X-ray films showed that hyperlucency was only in 29 lobes, in which 19 lobes were smallsized and the other 10 lobes normal. There were 56 lobes with air-trapping on expiratory SCT scans, but only 5 lobes with air-trapping on expiratory X-ray films. Bronchogram in 1 case demonstrated bronchiectasis and bronchiolitis obliterans. SCT showed 24 patients with bronchiectasis, 9 patients with tuberculosis, 10 patients with bronchiolitis, and 2 with segmental collapse. Conclusion SCT scan is superior to chest radiography in the diagnosis and differential diagnosis of SJS.

  12. A study on findings from simple chest radiographs without any clinical symptoms

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    Kim, Ham Gyum [Ansan College, Ansan (Korea, Republic of)

    2007-06-15

    In this study, the analysis on findings from simple chest radiography (CXR) test with total 1,669 subjects without any special clinical symptom came to the following conclusions: In terms of the general characteristics of subjects hereof, male and female group accounted for 55.2% and 44.8% respectively out of all 1,669 people. Pulmonary disease cases amounted to 249 persons (14.9%) out of all subjects. In the analysis on prevalence rate by age distribution, it was noted that the older age led to the more number of diseases, which was demonstrated by age 34 or younger (6.1%), age 35 {approx} 39 (9.7%), age 40 {approx} 49 (13.3%), and age 50 or older (30.8%). In regard of pulmonary disease alone, the region of onset was represented primarily by right upper lobe, which was followed by both upper lobe and left upper lobe, respectively. In terms of disease types, it was found that most cases were represented by pulmonary nodule (55.0%), which was followed by cardiomegaly (24.5%), CP angle blunting (4.8%), scoliosis (4.6%) tortuous aorta (2.8%), bronchial luminal dilatation(2.4%), and pleural thickening (2.0%). However, dextrocardia, cystic dilation of bronchus, cavitary lesion, and lung collapse accounted for relatively low rate (0.4% respectively). In terms of disease types by sex, it was found that male group accounted for higher percentage of having cardiomegaly, tortuous aorta and scoliosis than the former. In terms of disease types by age distribution, it was noted that age 34 or younger group accounted for higher percentage of scoliosis than any other age groups, while age 40 {approx} 49 group, age 35 {approx} 39 group, and age 50 or older group represented the case of CP angle blunting, pulmonary nodule, and cardiomegaly/tortuous aorta, respectively.

  13. CT saber-sheath trachea. Correlation with clinical, chest radiographic and functional findings

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    Trigaux, J.P. (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium)); Hermes, G. (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium)); Dubois, P. (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium)); Beers, B. van (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium)); Delaunois, L. (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium)); Jamart, J. (Services de Radiologie, de Pneumologie, Cliniques Universitaires UCL Mont-Godinne, Yvoir (Belgium))

    1994-05-01

    The diagnosis of saber-sheath trachea is easy at CT due to its cross-sectional imaging, but the significance of this CT sign has not been evaluated in the diagnosis of chronic obstructive pulmonary disease (COPD). Various signs of COPD were compared between a series of 20 patients with a saber-sheath trachea at CT (tracheal index [<=]66%) and a group of 20 pneumologic control patients without saber-sheath trachea (tracheal index [>=]70%). These signs include clinical and standard radiographic indices of COPD, sternum-spine distance and 3 functional tests of COPD: forced expiratory volume in one second, carbon monoxide diffusing lung capacity, and funtional residual capacity (FRC). A significant difference was found between the 2 groups, concerning the values of FRC and of sternum-spine distance (p<10[sup -2]). The tracheal index was significantly correlated with the FRC values and with the sternum-spine distance. No other significant difference was observed. It is concluded that saber-sheath trachea is basically a sign of hyperinflation. (orig./MG).

  14. Communication of Unexpected and Significant Findings on Chest Radiographs With an Automated PACS Alert System.

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    Hayes, Sara A

    2014-08-01

    An integral part of realizing the enormous potential of imaging in patient care is close communication between radiologists and referring physicians. One key element of this process is the communication of unexpected significant findings. The authors examined the performance of a PACS-based alert system in the appropriate communication of reports containing unexpected significant findings to referring physicians.

  15. Chest radiographic manifestations of scrub typhus

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    KPP Abhilash

    2016-01-01

    Full Text Available Background and Rationale: Respiratory system involvement in scrub typhus is seen in 20–72% of patients. In endemic areas, good understanding and familiarity with the various radiologic findings of scrub typhus are essential in identifying pulmonary complications. Materials and Methods: Patients admitted to a tertiary care center with scrub typhus between October 2012 and September 2013 and had a chest X ray done were included in the analysis. Details and radiographic findings were noted and factors associated with abnormal X-rays were analyzed. Results: The study cohort contained 398 patients. Common presenting complaints included fever (100%, generalized myalgia (83%, headache (65%, dyspnea (54%, cough (24.3%, and altered sensorium (14%. Almost half of the patients (49.4% had normal chest radiographs. Common radiological pulmonary abnormalities included pleural effusion (14.6%, acute respiratory distress syndrome (14%, airspace opacity (10.5%, reticulonodular opacities (10.3%, peribronchial thickening (5.8%, and pulmonary edema (2%. Cardiomegaly was noted in 3.5% of patients. Breathlessness, presence of an eschar, platelet counts of 2 mg/dL had the highest odds of having an abnormal chest radiograph. Patients with an abnormal chest X-ray had a higher requirement of noninvasive ventilation (odds ratio [OR]: 13.98; 95% confidence interval CI: 5.89–33.16, invasive ventilation (OR: 18.07; 95% CI: 6.42–50.88, inotropes (OR: 8.76; 95% CI: 4.35–17.62, higher involvement of other organ systems, longer duration of hospital stay (3.18 ± 3 vs. 7.27 ± 5.58 days; P< 0.001, and higher mortality (OR: 4.63; 95% CI: 1.54–13.85. Conclusion: Almost half of the patients with scrub typhus have abnormal chest radiographs. Chest radiography should be included as part of basic evaluation at presentation in patients with scrub typhus, especially in those with breathlessness, eschar, jaundice, and severe thrombocytopenia.

  16. Human infection with a novel avian-origin influenza A (H7N9) virus: serial chest radiographic and CT findings

    Institute of Scientific and Technical Information of China (English)

    Dai Jian; Zhou Xianmei; Dong Danjiang; Liu Yin; Gu Qin; Zhu Bin; Wu Chao

    2014-01-01

    Background Rapidly progressive pneumonia infection with H7N9 virus is a novel disease,and limited information is available concerning serial chest radiographic and computed tomography (CT) findings.The aim of this study was to evaluate the changes in serial radiologic findings in patients with H7N9 pneumonia.Methods The two institutional ethics review boards approved this retrospective study.This study included 10 patients with H7N9 pneumonia.All patients underwent chest radiologic examinations at different time points.Serial radiologic images were systematically analyzed.Results All patients showed abnormal results on initial chest radiography and CT.The initial radiographic abnormalities were unilateral (n=9) and bilateral (n=1),including ground-glass opacities (GGOs) (n=5) and consolidation (n=5).The initial CT findings consisted of unilateral (n=6) and bilateral (n=4),including consolidation (n=10),GGOs (n=10),reticular opacities (n=2),and pleural effusion (n=3).Follow-up radiologic findings showed rapid development of consolidation or GGOs within two weeks after illness onset.Pneumomediastinum with secondary subcutaneous emphysema and pneumothorax were noted in two patients.Follow-up high resolution computed tomography (HRCT) after two weeks showed slow improvement in both size and opacity of the lesions.On HRCT after discharge,patients had substantial residual lesions such as irregular linear opacities,reticular opacities,parenchymal bands,traction bronchiectasis,and cystic lesions.Conclusions The most common radiologic findings at presentation are multifocal or diffuse areas of consolidation and GGOs in H7N9 pneumonia.HRCT in sequence can show more changes in rapid progression of disease and a slow decrease of both size and opacity of the lesions plays an important role in the evaluation of H7N9 pneumonia.

  17. Pseudoprominent aorta: Radiographic findings and CT correlation

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    Brown, K.T.; Shepard, J.A.O.; Stewart, W.J.

    1985-05-01

    The presence of a persistent left-sided superior vena cava (LSVC) in the absence of a right-sided superior vena cava (RSVC) may be suspected on a posteroanterior (PA) chest radiograph because of a prominent-appearing ascending aorta, which results from the absence of the RSVC. In the absence of an RSVC, the right upper lobe abuts and outlines the course of the ascending aorta, allowing better demonstration of its profile. This report describes a patient with this finding on a PA chest radiograph. Computed tomographic correlation is presented.

  18. Chest radiograph findings and time to culture conversion in patients with multidrug-resistant tuberculosis and HIV in Tugela Ferry, South Africa.

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    James C M Brust

    Full Text Available BACKGROUND: The majority of patients with multidrug-resistant tuberculosis (MDR-TB in South Africa are co-infected with HIV, but the radiographic features of MDR-TB and their relationship with time to sputum culture conversion in the antiretroviral therapy era have not been described. METHODS: We reviewed baseline chest radiographs for 56 patients with MDR-TB from a rural area of South Africa. We analyzed the association of cavities, consolidation, pleural effusion and hilar lymphadenopathy with time to sputum culture conversion, adjusting for HIV status, baseline sputum smear and CD4 count. RESULTS: Of the 56 subjects, 49 (88% were HIV-positive, with a median CD4 count of 136 cells/mm(3 (IQR 65-249. Thirty-two (57% patients were sputum smear positive. Twenty-two (39% patients had a cavity and 37 (66% patients had consolidations. Cavitary disease and consolidations were each associated with longer time to culture conversion on bivariate analysis but not after adjusting for sputum smear status (aORs 1.79 [0.94-3.42] and 1.09 [0.67-1.78], respectively. Positive baseline sputum smear remained independently associated with longer time to conversion (aOR 3.45 [1.39-8.59]. We found no association between pleural effusion or hilar lymphadenopathy and time to conversion. Seventy-nine percent of patients were cured at the end of treatment. CONCLUSIONS: Despite high rates of HIV co-infection and advanced immunodeficiency, the majority of patients had severe pathology on baseline chest radiograph. Nevertheless, culture conversion rates were high and treatment outcomes were favorable. Cavitation and consolidation do not appear to have an independent association with time to culture conversion beyond that of baseline sputum smear status.

  19. Herpes simplex virus 1 pneumonia: conventional chest radiograph pattern

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    Umans, U.; Golding, R.P.; Duraku, S.; Manoliu, R.A. [Dept. of Radiology, Academic Hospital ' ' Vrije Universiteit' ' , Amsterdam (Netherlands)

    2001-06-01

    The aim of this study was to describe the findings on plain chest radiographs in patients with herpes simplex virus pneumonia (HSVP). The study was based on 17 patients who at a retrospective search have been found to have a monoinfection with herpes simplex virus. The diagnosis was established by isolation of the virus from material obtained during fiberoptic bronchoscopy (FOB) which also included broncho-alveolar lavage and tissue sampling. Fourteen patients had a chest radiograph performed within 24 h of the date of the FOB. Two radiographs showed no abnormalities of the lung parenchyma. The radiographs of the other 12 patients showed lung opacification, predominantly lobar or more extensive and always bilateral. Most patients presented with a mixed airspace and interstitial pattern of opacities, but 11 of 14 showed at least an airspace consolidation. Lobar, segmental, or subsegmental atelectasis was present in 7 patients, and unilateral or bilateral pleural effusion in 8 patients, but only in 1 patient was it a large amount. In contradiction to the literature which reports a high correlation between HSVP and acute respiratory distress syndrome (ARDS), 11 of 14 patients did not meet the pathophysiological criteria for ARDS. The radiologist may suggest the diagnosis of HSVP when bilateral airspace consolidation or mixed opacities appear in a susceptible group of patients who are not thought to have ARDS or pulmonary edema. The definite diagnosis of HSV pneumonia can be established only on the basis of culture of material obtained by broncho-alveolar lavage. (orig.)

  20. Computer Analysis Of ILO Standard Chest Radiographs Of Pneumoconiosis

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    Li, C. C.; Shu, David B. C.; Tai, H. T.; Hou, W.; Kunkle, G. A.; Wang, Y.; Hoy, R. J.

    1982-11-01

    This paper presents study of computer analysis of the 1980 ILO standard chest radiographs of pneumoconiosis. Algorithms developed for detection of individual small rounded and irregular opacities have been experimented and evaluated on these standard radiographs. The density, shape, and size distribution of the detected objects in the lung field, in spite of false positives, can be used as indicators for the beginning of pneumoconiosis. This approach is potentially useful in computer-assisted screening and early detection process where the annual chest radiograph of each worker is compared with his (her) own normal radiograph obtained previously.

  1. Radiographic findings in liveborn triploidy.

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    Silverthorn, K G; Houston, C S; Newman, D E; Wood, B J

    1989-01-01

    The detailed radiographic features of triploidy, a fatal congenital disorder with 69 chromosomes, have not previously been reported. Radiographs of ten liveborn infants with chromosomally confirmed triploidy showed six findings highly suggestive of this diagnosis: harlequin orbits, small anterior fontanelle, gracile ribs, diaphyseal overtubulation of long bones, upswept clavicles and antimongoloid pelvis. Sixteen other less specific findings showed many similarities to those found in trisomy 18.

  2. Radiographic findings in liveborn triploidy

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    Silverthorn, K.G.; Houston, C.S.; Newman, D.E.; Wood, B.J.

    1989-05-01

    The detailed radiographic features of triploidy, a fatal congenital disorder with 69 chromosomes, have not previously been reported. Radiographs of ten liveborn infants with chromosomally confirmed triploidy showed six findings highly suggestive of this diagnosis: Harlequin orbits, small anterior fontanelle, gracile ribs, diaphyseal overtubulation of long bones, upswept clavicles and antimongoloid pelvis. Sixteen other less specific findings showed many similarities to those found in trisomy 18.

  3. Severe acute respiratory syndrome (SARS): chest radiographic features in children

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    Babyn, Paul S.; Gahunia, Harpal K.; Manson, David [Department of Diagnostic Imaging, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario (Canada); Chu, Winnie C.W.; Metreweli, Constantine [Prince of Wales Hospital, Shatin (China); Department of Diagnostic Radiology and Organ Imaging, Chinese University of Hong Kong (China); Tsou, Ian Y.Y.; Wansaicheong, Gervais K.L.; Chee, Thomas S.G.; Kaw, Gregory J.L. [Department of Diagnostic Radiology, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng (Singapore); Allen, Upton; Bitnun, Ari; Read, Stanley [Division of Infectious Diseases, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario (Canada); Cheng, Frankie W.T.; Fok, Tai-Fai; Hon, Ellis K.L.; Li, Albert M.; Ng, Pak-Cheung [Department of Paediatrics, Chinese University of Hong Kong, Prince of Wales Hospital, 30-32 Ngan Shing Street, Shatin, Hong Kong, SAR (China); Chiu, Man-Chun; Leung, Chi-Wai [Department of Paediatrics and Adolescent Medicine, Princess Margaret Hospital, Lai King Hill Road, Lai Chi Kok, Hong Kong, SAR (China); Khong, Pek L. [Department of Diagnostic Radiology, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, SAR (China); Stringer, David A.

    2004-01-01

    We abstracted data (n=62) on the radiologic appearance and course of SARS in pediatric patients with suspect (n=25) or probable (n=37) SARS, diagnosed in five hospital sites located in three cities: Toronto, Singapore, and Hong Kong. Available chest radiographs and thoracic CTs were reviewed for the presence of the following radiographic findings: airspace disease, air bronchograms, airways inflammation and peribronchial thickening, interstitial disease, pleural effusion, and hilar adenopathy. A total of 62 patients (suspect=25, probable=37) were evaluated for SARS. Patient ages ranged from 5.5 months to 17 years and 11.5 months (average, 6 years and 10 months) with a female-to-male ratio of 32:30. Forty-one patients (66.1%) were in close contact with other probable, suspect, or quarantined cases; 10 patients (16.1%) had recently traveled to WHO-designated affected areas within 10 days; and 7 patients (11.2%) were transferred from other hospitals that had SARS patients. Three patients, who did not have close/hospital contact or travel history to affected areas, were classified as SARS cases based on their clinical signs and symptoms and on the fact that they were living in an endemic area. The most prominent clinical presentations were fever, with a temperature over 38 C (100%), cough (62.9%), rhinorrhea (22.6%), myalgia (17.7%), chills (14.5%), and headache (11.3%). Other findings included sore throat (9.7%), gastrointestinal symptoms (9.7%), rigor (8.1%), and lethargy (6.5%). In general, fever and cough were the most common clinical presentations amongst younger pediatric SARS cases (age<10 years), whereas, in addition to these symptoms, headache, myalgia, sore throat, chills, and/or rigor were common in older patients (age{>=}10 years). The chest radiographs of 35.5% of patients were normal. The most prominent radiological findings that were observed in the remaining patients were areas of consolidation (45.2%), often peripheral with multifocal lesions in 22

  4. Novel Influenza A (H1N1) Virus Infection in Children: Chest Radiographic and CT Evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Min Jeong; Lee, Young Seok; Lee, Jee Young; Lee, Kun Song [Dankook University College of Medicine, Dankook University Hospital, Cheonan (Korea, Republic of)

    2010-12-15

    The purpose of this study was to evaluate the chest radiographic and CT findings of novel influenza A (H1N1) virus infection in children, the population that is more vulnerable to respiratory infection than adults. The study population comprised 410 children who were diagnosed with an H1N1 infection from August 24, 2009 to November 11, 2009 and underwent chest radiography at Dankook University Hospital in Korea. Six of these patients also underwent chest CT. The initial chest radiographs were classified as normal or abnormal. The abnormal chest radiographs and high resolution CT scans were assessed for the pattern and distribution of parenchymal lesions, and the presence of complications such as atelectasis, pleural effusion, and pneumomediastinum. The initial chest radiograph was normal in 384 of 410 (94%) patients and abnormal in 26 of 410 (6%) patients. Parenchymal abnormalities seen on the initial chest radiographs included prominent peribronchial marking (25 of 26, 96%), consolidation (22 of 26, 85%), and ground-glass opacities without consolidation (2 of 26, 8%). The involvement was usually bilateral (19 of 26, 73%) with the lower lung zone predominance (22 of 26, 85%). Atelectasis was observed in 12 (46%) and pleural effusion in 11 (42%) patients. CT (n = 6) scans showed peribronchovascular interstitial thickening (n = 6), ground-glass opacities (n = 5), centrilobular nodules (n = 4), consolidation (n = 3), mediastinal lymph node enlargement (n = 5), pleural effusion (n = 3), and pneumomediastinum (n = 3). Abnormal chest radiographs were uncommon in children with a swine-origin influenza A (H1N1) virus (S-OIV) infection. In children, H1N1 virus infection can be included in the differential diagnosis, when chest radiographs and CT scans show prominent peribronchial markings and ill-defined patchy consolidation with mediastinal lymph node enlargement, pleural effusion and pneumomediastinum

  5. Posterior diaphragmatic defect detected on chest CT: the incidence according to age and the lateral chest radiographic appearances

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Son Youl; Choi, Yo Won; Jeon, Seok Chol; Heo, Jeong Nam; Park, Choong Ki [College of Medicine, Hanyang University, Seoul (Korea, Republic of)

    2007-03-15

    We wanted to investigate the incidence of posterior diaphragmatic defect on chest CT in various age groups and its lateral chest radiographic appearances. The chest CT scans of 78 patients of various ages with posterior diaphragmatic defect were selected among 1,991 patients, and they were analyzed for the incidence of defect in various age groups, the defect location and the herniated contents. Their lateral chest radiographs were analyzed for the shape of the posterior diaphragm and the posterior costophrenic sulcus. The patients' ages ranged from 34 to 87 with the tendency of a higher incidence in the older patients. The defect most frequently involved the medial two thirds (n = 49, 50.4%) and middle one third (n = 36, 37%) of the posterior diaphragm. The retroperitoneal fat was herniated into the thorax through the defect in all patients, and sometimes with the kidney (n = 8). Lateral chest radiography showed a normal diaphragmatic contour (n = 51, 49.5%), blunting of the posterior costophrenic sulcus (n = 41, 39.8%), focal humping of the posterior diaphragm (n = 7, 6.8%), or upward convexity (n = 4, 3.9%) of the posterior costophrenic sulcus on the affected side. The posterior diaphragmatic defect discovered in asymptomatic patients who are without a history of peridiaphragmatic disease is most likely acquired, and this malady increases in incidence according to age. An abnormal contour of the posterior diaphragm or the costophrenic sulcus on a lateral chest radiograph may be a finding of posterior diaphragmatic defect.

  6. Localized Fisher vector representation for pathology detection in chest radiographs

    Science.gov (United States)

    Geva, Ofer; Lieberman, Sivan; Konen, Eli; Greenspan, Hayit

    2016-03-01

    In this work, we present a novel framework for automatic detection of abnormalities in chest radiographs. The representation model is based on the Fisher Vector encoding method. In the representation process, we encode each chest radiograph using a set of extracted local descriptors. These include localized texture features that address typical local texture abnormalities as well as spatial features. Using a Gaussian Mixture Model, a rich image descriptor is generated for each chest radiograph. An improved representation is obtained by selection of features that correspond to the relevant region of interest for each pathology. Categorization of the X-ray images is conducted using supervised learning and the SVM classifier. The proposed system was tested on a dataset of 636 chest radiographs taken from a real clinical environment. We measured the performance in terms of area (AUC) under the receiver operating characteristic (ROC) curve. Results show an AUC value of 0.878 for abnormal mediastinum detection, and AUC values of 0.827 and 0.817 for detection of right and left lung opacities, respectively. These results improve upon the state-of-the-art as compared with two alternative representation models.

  7. Chest Radiographs for Pediatric TB Diagnosis: Interrater Agreement and Utility

    Directory of Open Access Journals (Sweden)

    G. Kaguthi

    2014-01-01

    Full Text Available The chest radiograph (CXR is considered a key diagnostic tool for pediatric tuberculosis (TB in clinical management and endpoint determination in TB vaccine trials. We set out to compare interrater agreement for TB diagnosis in western Kenya. A pediatric pulmonologist and radiologist (experts, a medical officer (M.O, and four clinical officers (C.Os with basic training in pediatric CXR reading blindly assessed CXRs of infants who were TB suspects in a cohort study. C.Os had access to clinical findings for patient management. Weighted kappa scores summarized interrater agreement on lymphadenopathy and abnormalities consistent with TB. Sensitivity and specificity of raters were determined using microbiologically confirmed TB as the gold standard (n=8. A total of 691 radiographs were reviewed. Agreement on abnormalities consistent with TB was poor; k=0.14 (95% CI: 0.10–0.18 and on lymphadenopathy moderate k=0.26 (95% CI: 0.18–0.36. M.O [75% (95% CI: 34.9%–96.8%] and C.Os [63% (95% CI: 24.5%–91.5%] had high sensitivity for culture confirmed TB. TB vaccine trials utilizing expert agreement on CXR as a nonmicrobiologically confirmed endpoint will have reduced specificity and will underestimate vaccine efficacy. C.Os detected many of the bacteriologically confirmed cases; however, this must be interpreted cautiously as they were unblinded to clinical features.

  8. H1N1 influenza infection in children: Frequency, pattern, and outcome of chest radiographic abnormalities

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, S.-Y. [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Kim, J.H., E-mail: jhkate@skku.ed [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Eo, H.; Jeon, T.Y.; Shin, K.E.; Shin, W.S.; Jung, H.N. [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Kim, Y.-J. [Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2011-04-15

    Aim: To describe the frequency, pattern, and outcome of chest radiographic abnormalities in children with H1N1 influenza infection. Materials and methods: Three hundred and fourteen paediatric patients with confirmed H1N1 influenza infection who underwent chest radiography at presentation at a single institution during the outbreak in 2009 were retrospectively reviewed. Abnormal chest radiographic findings related to acute infection were analysed in terms of frequency, pattern, and distribution. Medical records and follow-up radiographs were also reviewed to assess clinical features and outcomes. Results: Chest lesions suggesting acute infection were identified in 49 (16%) patients (mean age 8.2 years, range approximately 1.8-18.5 years). The most common finding was prominent peribronchial marking (71%), followed by air-space opacity (51%) with or without volume decrease, generalized hyperinflation (24%), and pleural effusion (20%). Other minor findings included pneumomediastinum (n = 2) and a nodule (n = 1). Distributions were bilateral (55%) or unilateral (45%) with frequent involvement of lower (78%), and middle (59%) lung zones. Thirty-nine patients (80%) were hospitalized and six (12%) required mechanical ventilation, followed by recovery. Thirty-one out of the 33 patients that underwent follow-up radiography showed marked resolution of all radiographic abnormalities. Conclusion: The frequency of a chest radiographic abnormality was found to be low in children with H1N1 influenza infection. Although typical radiographic findings of a viral lower respiratory infection were more common, unilateral involvement and air-space opacity were common, often with pleural effusion. Furthermore, pulmonary lesions showed near complete resolution on follow-up radiographs in the majority of patients.

  9. Chest radiographic findings in children with 2009 influenza A ( H1N1 ) virus infection%2009甲型H1N1流感儿童胸X线片表现

    Institute of Scientific and Technical Information of China (English)

    闫淯淳; 房萍; 白凤森; 陈慧中; 车莉; 袁新宇; 曲东; 任晓旭; 张宝元; 孙宇

    2011-01-01

    Objective To evaluate chest radiographic findings of children with 2009 influenza ( H1N1 ) virus infection. Method Data of 235 patients who had microbiologically confirmed H1N1 infection and available chest radiograph obtained between May 1st 2009 and Jan. 31st 2010 were retrospectively analyzed. The final study group was divided on the basis of clinical course [group 1 mild, outpatients without hospitalization ( n = 172 ); group 2 moderate, inpatients with brief hospitalization ( n = 49 ); group 3 severe, ICU admission (n = 14)]. Four pediatric radiologists reviewed all the chest radiographs of lung parenchyma, airway, pleural abnormalities and also anatomic distribution of the disease. Result No significant sex or age differences were found among the study groups ( P >0.05 ). The mean interval between the onset of clinical symptom and the initial chest radiography was (5.91 ± 1. 64) days (group 1 ), (3.60 ±1.43 ) days ( group 2) and ( 1.21 ± 0.41 ) days ( group 3 ), respectively. The differences among the three groups were significant statistically ( χ2 = 13.368, P < 0.01 ). The ratio of abnormality presented at initial chest X-ray was 79.7% in group 1,91.8% in group 2 and 100% in group 3. Radiographically, there were prominent peribronchial markings ( group 1, 55.2%; group 2, 83.7%; and group 3, 78.6% ),consolidation ( group 1, 34.3%; group 2, 69.4%; and group 3, 100.0% ), hyperinflation ( group 1,22.1%; group 2, 44.9%; and group 3, 50.0% ) and ground glass opacity ( group 1, 0.6%; group 2,2.0%; and group 3, 14.3% ) in the chest radiographs. The differences of presenting were statistically significant (P <0.01 ). In the severe group, the lesions distributed diffusely and asymmetrically with multi lobe involvements. Conclusion In children with 2009 influenza A H1N1 viral infection, the interval between the onset of clinical symptom and initial chest radiography, the ratio of abnormality presented at initial chest X-ray film and the severity of chest

  10. Radiographic findings in pulmonary hypertension from unresolved embolism

    Energy Technology Data Exchange (ETDEWEB)

    Woodruff, W.W. III; Hoeck, B.E.; Chitwood, W.R. Jr.; Lyerly, H.K.; Sabiston, D.C. Jr.; Chen, J.T.T.

    1985-04-01

    Pulmonary artery hypertension with chronic pulmonary embolism is an uncommon entity that is potentially treatable with pulmonary embolectomy. Although the classic radiographic features have been described, several recent investigators report a significant percentage of these patients with normal chest radiographs. In a series of 22 patients, no normal radiographs were seen. Findings included cardiomegaly (86.4%) with right-sided enlargement (68.4%), right descending pulmonary artery enlargement (54.5%), azygos vein enlargement (27.3%), mosaic oligemia (68.2%), chronic volume loss (27.3%), atelectasis and/or effusion (22.7%), and pleural thickening (13.6%). Good correlation with specific areas of diminished vascularity was seen on chest radiographs compared with pulmonary angiograms.

  11. A Computer-Aided Detection System for Digital Chest Radiographs

    Directory of Open Access Journals (Sweden)

    Juan Manuel Carrillo-de-Gea

    2016-01-01

    Full Text Available Computer-aided detection systems aim at the automatic detection of diseases using different medical imaging modalities. In this paper, a novel approach to detecting normality/pathology in digital chest radiographs is proposed. The problem tackled is complicated since it is not focused on particular diseases but anything that differs from what is considered as normality. First, the areas of interest of the chest are found using template matching on the images. Then, a texture descriptor called local binary patterns (LBP is computed for those areas. After that, LBP histograms are applied in a classifier algorithm, which produces the final normality/pathology decision. Our experimental results show the feasibility of the proposal, with success rates above 87% in the best cases. Moreover, our technique is able to locate the possible areas of pathology in nonnormal radiographs. Strengths and limitations of the proposed approach are described in the Conclusions.

  12. Detection of tuberculosis using hybrid features from chest radiographs

    Science.gov (United States)

    Fatima, Ayesha; Akram, M. Usman; Akhtar, Mahmood; Shafique, Irrum

    2017-02-01

    Tuberculosis is an infectious disease and becomes a major threat all over the world but still diagnosis of tuberculosis is a challenging task. In literature, chest radiographs are considered as most commonly used medical images in under developed countries for the diagnosis of TB. Different methods have been proposed but they are not helpful for radiologists due to cost and accuracy issues. Our paper presents a methodology in which different combinations of features are extracted based on intensities, shape and texture of chest radiograph and given to classifier for the detection of TB. The performance of our methodology is evaluated using publically available standard dataset Montgomery Country (MC) which contains 138 CXRs among which 80 CXRs are normal and 58 CXRs are abnormal including effusion and miliary patterns etc. The accuracy of 81.16% was achieved and the results show that proposed method have outperformed existing state of the art methods on MC dataset.

  13. Gout: radiographic findings mimicking infection

    Energy Technology Data Exchange (ETDEWEB)

    Rousseau, I.; Raymond-Tremblay, D. [Dept. of Diagnostic Radiology, Centre Hospitalier de l' Univ. de Montreal, Que. (Canada); Cardinal, E. [Dept. of Radiology, Centre Hospitalier de l' Univ. de Montreal, Que. (Canada); Beauregard, C.G. [Dept. of Diagnostic Radiology, Hopital du Sacre-Coeur de Montreal,Que. (Canada); Braunstein, E.M. [Dept. of Radiology, Indiana University Hospital (United States); Saint-Pierre, A. [Rheumatology Unit, Centre Hospitalier de l' Univ. de Montreal, Que. (Canada)

    2001-10-01

    Objective: To describe radiographic features of gout that may mimic infection. Design and patients: We report five patients with acute bacterial gout who presented with clinical as well as radiological findings mimicking acute bacterial septic arthritis or osteomyelitis. Three patients had delay in the appropriate treatment with the final diagnosis being established after needle aspiration and identification of urate crystals under polarized light microscopy. Two patients underwent digit amputation for not responding to antibiotic treatment and had histological findings confirming the diagnosis of gout. Conclusion: It is important for the radiologist to be aware of the radiological manifestations of acute gout that can resemble infection in order to avoid inappropriate diagnosis and delay in adequate treatment. The definitive diagnosis should rely on needle aspiration and a specific search for urate crystals. (orig.)

  14. Interpretation of posterior wall of bronchus intermedius and subcarinal region in lateral chest radiographs

    Energy Technology Data Exchange (ETDEWEB)

    Sung, Dong Wook; Oh, Joo Hyeong; Yoon, Yup [Kyunghee Univ. Hospital, Seoul (Korea, Republic of)

    1996-08-01

    a lateral chest radiograph is frequently useful and sometimes decisive in detecting chest pathology. Certain parts, such as the posterior wall of the branchus intermedius (PWBI) and subcarinal regions, can be evaluated only on lateral chest radiograph. The authors present and emphasize the findings of PWBI and subcarinal abnormalities. Abnormal PWBI, more than 3 mm thick, is seen in cases of minor degree of oblique position, pulmonary edema, inflammation, neoplasm and enlarged lymph nodes. It can also be seen in patients with subcarinal mass. The findings of subcarinal mass on lateral view are ill-defined increased opacity, fullness of the inferior hilar region, doughnut sign, extra-density and thickening of the PWBI. Detection of changes in the PWBI and subcarinal region may be the only diagnostic evidence of hilar and subcarinal disease and helps in its early detection prior to computed tomography.

  15. Chest radiographic characteristics of community-acquired Legionella pneumonia in the elderly

    Institute of Scientific and Technical Information of China (English)

    Zhang Zhigang; Liu Xinmin; Chen Luzeng; Qiu Jianxing

    2014-01-01

    Background Legionella is an important community-acquired pneumonia pathogen.Although the elderly are especially susceptible to Legionella,few studies have looked at comparative radiographic features of Legionella pneumonia in this population.The aim of this study was to explore the chest radiographic characteristics of community-acquired Legionella pneumonia in the elderly.Methods Serial chest radiographs obtained in 34 patients hospitalized with serologically proven Legionella pneumonia were retrospectively reviewed.Chest x-ray features of an aged group of ≥65 years were assessed and compared with a non-aged group of <65 years old with regard to initial patterns and distributions of pulmonary abnormalities,accompanying signs,and progression.Results The most common initial presentation was a patchy alveolar infiltrate involving a single lobe,most often the lower lobe.There was no middle or lingular lobe involvement in the aged group patients,but bilateral pleural effusion was significantly more common in this group.In the aged group patients,radiographic progression following adequate therapy,despite a clinical response,was more often noted and the radiographs were less likely to have returned to the premorbid state at discharge,but the differences were not significant between the two groups.Conclusion The discrepancy between imaging findings and clinical symptoms seems more prominent in community-acquired Legionella pneumonia in the elderly.

  16. Inappropriate mode switching clarified by using a chest radiograph.

    Science.gov (United States)

    Marino, Brian; Jaiswal, Abhishek; Goldbarg, Seth

    2015-08-01

    An 80-year-old woman with a history of paroxysmal atrial fibrillation and atrioventricular node disease status post-dual chamber pacemaker placement was noted to have abnormal pacing episodes during a percutaneous coronary intervention. Pacemaker interrogation revealed a high number of short duration mode switching episodes. Representative electrograms demonstrated high frequency nonphysiologic recordings predominantly in the atrial lead. Intrinsic pacemaker malfunction was excluded. A chest radiograph showed excess atrial and ventricular lead slack in the right ventricular inflow. It was suspected that lead-lead interaction resulted in artifacts and oversensing, causing frequent short episodes of inappropriate mode switching.

  17. Computer-aided Detection Fidelity of Pulmonary Nodules in Chest Radiograph

    Science.gov (United States)

    Dellios, Nikolaos; Teichgraeber, Ulf; Chelaru, Robert; Malich, Ansgar; Papageorgiou, Ismini E

    2017-01-01

    Aim: The most ubiquitous chest diagnostic method is the chest radiograph. A common radiographic finding, quite often incidental, is the nodular pulmonary lesion. The detection of small lesions out of complex parenchymal structure is a daily clinical challenge. In this study, we investigate the efficacy of the computer-aided detection (CAD) software package SoftView™ 2.4A for bone suppression and OnGuard™ 5.2 (Riverain Technologies, Miamisburg, OH, USA) for automated detection of pulmonary nodules in chest radiographs. Subjects and Methods: We retrospectively evaluated a dataset of 100 posteroanterior chest radiographs with pulmonary nodular lesions ranging from 5 to 85 mm. All nodules were confirmed with a consecutive computed tomography scan and histologically classified as 75% malignant. The number of detected lesions by observation in unprocessed images was compared to the number and dignity of CAD-detected lesions in bone-suppressed images (BSIs). Results: SoftView™ BSI does not affect the objective lesion-to-background contrast. OnGuard™ has a stand-alone sensitivity of 62% and specificity of 58% for nodular lesion detection in chest radiographs. The false positive rate is 0.88/image and the false negative (FN) rate is 0.35/image. From the true positive lesions, 20% were proven benign and 80% were malignant. FN lesions were 47% benign and 53% malignant. Conclusion: We conclude that CAD does not qualify for a stand-alone standard of diagnosis. The use of CAD accompanied with a critical radiological assessment of the software suggested pattern appears more realistic. Accordingly, it is essential to focus on studies assessing the quality-time-cost profile of real-time (as opposed to retrospective) CAD implementation in clinical diagnostics.

  18. Radiographic, CT and MRI spectrum of hydatid disease of the chest: a pictorial essay

    Energy Technology Data Exchange (ETDEWEB)

    Sinner, W.N. von [Dept. of Radiology MBC28, King Faisal Specialist Hospital and Research Centre, Riyadh (Saudi Arabia)

    1993-01-01

    Thirty patients with thoracic hydatidosis (Echinococcus granulosus) were studied. The hydatid cysts were located in the lung parenchyma (70%), mediastinum (6.7%), inside the heart (10%), the pleurae (10%) and the chest wall (3.3%). Complications of thoracic hydatid cysts, such as rupture, infection, pleural involvement, spread and calcifications are presented. Computed tomography (CT) without and/or with contrast enhancement was performed in all patients (30). Findings from conventional chest radiographs were compared with CT and confirmed by pathology (30). In 10 cases (33.3%), magnetic resonance imaging was also performed. The diagnostic spectrum of hydatid cysts, including variations and developmental stages, is presented in this pictorial essay. (orig.)

  19. Radiographic findings in type 3 b Gaucher disease

    Energy Technology Data Exchange (ETDEWEB)

    Hill, S.C. [Diagnostic Radiology Department, National Institutes of Health, Bethesda, MD (United States); Damaska, B.M. [Diagnostic Radiology Department, National Institutes of Health, Bethesda, MD (United States); Tsokos, M. [Laboratory of Pathology, National Institutes of Health, Bethesda, MD (United States); Kreps, C. [Developmental and Metabolic Neurology Branch, National Institutes of Health, Bethesda, MD (United States); Brady, R.O. [Developmental and Metabolic Neurology Branch, National Institutes of Health, Bethesda, MD (United States); Barton, N.W. [Developmental and Metabolic Neurology Branch, National Institutes of Health, Bethesda, MD (United States)

    1996-12-01

    The purpose of this paper is to describe the radiographic findings in type 3 b Gaucher disease, a chronic neuronopathic form of the illness with severe systemic manifestations. Between 1980 and 1985 17 consecutive patients were evaluated with radiography of the chest, long bones and spine, CT of the head and chest, abdominal sonography, and MRI of the head, abdomen and spine. Clinical manifestations were severe, and led to death from hepatic, pulmonary or cardiac failure in nine patients. Type 3 b Gaucher disease shares the same spectrum of radiographic findings observed in type 1 disease, but the systemic manifestations are more severe. Pulmonary infiltrates, thoracic lymph node enlargement, vertebral compression fractures and osteonecrosis of the long bones occur much more frequently in patients with type 3 b disease. (orig.). With 7 figs., 2 tabs.

  20. A level crossing enhancement scheme for chest radiograph images.

    Science.gov (United States)

    Nagesha; Kumar, G Hemantha

    2007-10-01

    A new approach for contrast enhancement of chest radiograph image data is presented. Existing methods for image enhancement focus mainly on the properties of the image to be processed while excluding any consideration of the observer characteristics. In several applications, particularly in the medical imaging area, effective contrast enhancement for diagnostic purposes can be achieved by including certain basic human visual properties. In this paper we shall present a novel (recursive) algorithm that tailors the required amount of contrast enhancement based on a combination of the optimal phase representation and the theory of projection onto a convex set. Constraints of maximum bandwidth of the image data, appropriate knowledge of the amplitude value of the image data, heuristic limitations and level crossing measurements serve to impose additional information. So that, the enhanced image data may better converge to the good quality image.

  1. Lung cancer screening: Computed tomography or chest radiographs?

    Institute of Scientific and Technical Information of China (English)

    Edwin; JR; van; Beek; Saeed; Mirsadraee; John; T; Murchison

    2015-01-01

    Worldwide, lung cancer is the leading cause of mortalitydue to malignancy. The vast majority of cases of lung cancer are smoking related and the most effective way of reducing lung cancer incidence and mortality is by smoking cessation. In the Western world, smoking cessation policies have met with limited success. The other major means of reducing lung cancer deaths is to diagnose cases at an earlier more treatable stage employing screening programmes using chest radiographs or low dose computed tomography. In many countries smoking is still on the increase, and the sheer scale of the problem limits the affordability of such screening programmes. This short review article will evaluate the current evidence and potential areas of research which may benefit policy making across the world.

  2. Fully automatic lung segmentation and rib suppression methods to improve nodule detection in chest radiographs.

    Science.gov (United States)

    Soleymanpour, Elaheh; Pourreza, Hamid Reza; Ansaripour, Emad; Yazdi, Mehri Sadooghi

    2011-07-01

    Computer-aided Diagnosis (CAD) systems can assist radiologists in several diagnostic tasks. Lung segmentation is one of the mandatory steps for initial detection of lung cancer in Posterior-Anterior chest radiographs. On the other hand, many CAD schemes in projection chest radiography may benefit from the suppression of the bony structures that overlay the lung fields, e.g. ribs. The original images are enhanced by an adaptive contrast equalization and non-linear filtering. Then an initial estimation of lung area is obtained based on morphological operations and then it is improved by growing this region to find the accurate final contour, then for rib suppression, we use oriented spatial Gabor filter. The proposed method was tested on a publicly available database of 247 chest radiographs. Results show that this method outperformed greatly with accuracy of 96.25% for lung segmentation, also we will show improving the conspicuity of lung nodules by rib suppression with local nodule contrast measures. Because there is no additional radiation exposure or specialized equipment required, it could also be applied to bedside portable chest x-rays. In addition to simplicity of these fully automatic methods, lung segmentation and rib suppression algorithms are performed accurately with low computation time and robustness to noise because of the suitable enhancement procedure.

  3. Detection of interstitial lung disease in PA chest radiographs

    Science.gov (United States)

    Loog, Marco; van Ginneken, Bram; Nielsen, Mads

    2004-05-01

    A computer-aided diagnosis scheme for the detection of interstitial disease in standard digital posteroanterior (PA) chest radiographs is presented. The detection technique is supervised-manually labelled data should be provided for training the algorithm-and fully automatic, and can be used as part of a computerized analysis scheme for X-ray lung images. Prior to the detection, a segmentation should be performed which delineates the lung field boundaries. Subsequently, a quadratic decision rule is employed for every pixel within the lung fields to associate with each pixel a probabilistic measure indicating interstitial disease. The locally obtained per-pixel probabilities are fused to a single global probability indicating to what extent there is interstitial disease present in the image. Finally, a threshold on this quantity classifies the image as containing interstitial disease or not. The probability combination scheme presented utilizes the quantiles of the local posterior probabilities to fuse the local probability into a global one. Using this nonparametric technique, reasonable results are obtained on the interstitial disease detection task. The area under the receiver operating characteristic equals 0.92 for the optimal setting.

  4. COMPUTER-AIDED DETECTION OF ACINAR SHADOWS IN CHEST RADIOGRAPHS

    Directory of Open Access Journals (Sweden)

    Tao Xu

    2013-05-01

    Full Text Available Despite the technological advances in medical diagnosis, accurate detection of infectious tuberculosis (TB still poses challenges due to complex image features and thus infectious TB continues to be a public health problem of global proportions. Currently, the detection of TB is mainly conducted visually by radiologists examining chest radiographs (CXRs. To reduce the backlog of CXR examination and provide more precise quantitative assessment, computer-aided detection (CAD systems for potential lung lesions have been increasingly adopted and commercialized for clinical practice. CADs work as supporting tools to alert radiologists on suspected features that could have easily been neglected. In this paper, an effective CAD system aimed for acinar shadow regions detection in CXRs is proposed. This system exploits textural and photometric features analysis techniques which include local binary pattern (LBP, grey level co-occurrence matrix (GLCM and histogram of oriented gradients (HOG to analyze target regions in CXRs. Classification of acinar shadows using Adaboost is then deployed to verify the performance of a combination of these techniques. Comparative study in different image databases shows that the proposed CAD system delivers consistent high accuracy in detecting acinar shadows.

  5. Potential usefulness of a video printer for producing secondary images from digitized chest radiographs

    Science.gov (United States)

    Nishikawa, Robert M.; MacMahon, Heber; Doi, Kunio; Bosworth, Eric

    1991-05-01

    Communication between radiologists and clinicians could be improved if a secondary image (copy of the original image) accompanied the radiologic report. In addition, the number of lost original radiographs could be decreased, since clinicians would have less need to borrow films. The secondary image should be simple and inexpensive to produce, while providing sufficient image quality for verification of the diagnosis. We are investigating the potential usefulness of a video printer for producing copies of radiographs, i.e. images printed on thermal paper. The video printer we examined (Seikosha model VP-3500) can provide 64 shades of gray. It is capable of recording images up to 1,280 pixels by 1,240 lines and can accept any raster-type video signal. The video printer was characterized in terms of its linearity, contrast, latitude, resolution, and noise properties. The quality of video-printer images was also evaluated in an observer study using portable chest radiographs. We found that observers could confirm up to 90 of the reported findings in the thorax using video- printer images, when the original radiographs were of high quality. The number of verified findings was diminished when high spatial resolution was required (e.g. detection of a subtle pneumothorax) or when a low-contrast finding was located in the mediastinal area or below the diaphragm (e.g. nasogastric tubes).

  6. Normal radiographic findings. 4. act. ed.; Roentgennormalbefunde

    Energy Technology Data Exchange (ETDEWEB)

    Moeller, T.B. [Gemeinschaftspraxis fuer Radiologie und Nuklearmedizin, Dillingen (Germany)

    2003-07-01

    This book can serve the reader in three ways: First, it presents normal findings for all radiographic techniques including KM. Important data which are criteria of normal findings are indicated directly in the pictures and are also explained in full text and in summary form. Secondly, it teaches the systematics of interpreting a picture - how to look at it, what structures to regard in what order, and for what to look in particular. Checklists are presented in each case. Thirdly, findings are formulated in accordance with the image analysis procedure. All criteria of normal findings are defined in these formulations, which make them an important didactic element. (orig.)

  7. Respiratory bronchiolitis: radiographic and CT findings in a pathologically proven case

    Energy Technology Data Exchange (ETDEWEB)

    Essadki, O.; Chartrand-Lefebvre, C.; Grenier, P. [Department of Radiology, Pitie-Salpetrire Hospital, Paris (France); Briere, J. [Department of Pathology, Laennec Hospital, Paris (France)

    1998-12-01

    A small number of cases of cigarette-smoking-associated respiratory bronchiolitis (RB) with positive findings on the chest radiograph have been reported in the literature. High-resolution computed tomography (HRCT) findings are available in even fewer cases. We describe the case of an asymptomatic female smoker presenting with a reticulomicronodular infiltrate on a routine chest radiograph. High-resolution CT was characterized by ground-glass opacities and centrilobular micronodules with an upper lobe predominance. Surgical biopsy revealed peribronchiolar lesions, with accumulation of brown pigmented macrophages in the lumen of alveolar and bronchiolar lumen, consistent with the pathologic diagnosis of RB. (orig.) With 3 figs., 12 refs.

  8. Optimization of pediatric chest radiographic images using optical densities ratio

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Rafael T.F.; Miranda, Jose R.A. [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Inst. de Biociencias de Botucatu; Pina, Diana R. [Faculdade de Medicina de Botucatu (UNESP), Botucatu, SP (Brazil). Hospital das Clinicas. Dept. de Doencas Tropicais e Diagnostico por Imagem; Duarte, Sergio B. [Centro Brasileiro de Pesquisas Fisicas (CBPF/MCT), Rio de Janeiro, RJ (Brazil)

    2011-07-01

    The aim of this study is the optimization of radiographic images for the pediatric patients in the age range between 0 and 1 years old, through Optical Density Ratio (ODR), considering that pediatric patients are overexposed to radiation in the repeated attempts to obtain radiographic images considered of good quality. The optimization of radiographic techniques was carried out with the RAP-PEPP (Realistic Analytical Phantom coupled to homogeneous Phantom Equivalent to Pediatric Patient) phantom in two incubators and one cradle. The data show that the clinical routine radiographic techniques generate low-quality images at up to 18.8% when evaluated by the ODRs, and increases in doses up to 60% when compared to the optimized techniques doses. (author)

  9. Necrotizing fasciitis : plain radiographic and CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Chang Dae; Park, Jeong Hee; Jeon, Hae Jeong; Lim, Jong Nam; Heo, Tae Haeng; Park, Dong Rib [Konkuk Univ. College of Medicine, Seoul (Korea, Republic of)

    1996-11-01

    To evaluate the plain radiographic and CT findings of the necrotizing fasciitis. We retrospectively reviewed the radiologic findings of 4 cases with necrotizing fasciitis. Three cases were proven pathologically. We evaluated pattern and extent of the gas shadows in plain films. CT findings were analysed, with emphasis on : (a) gas pattern, (b) extent, (c) location and involved site, (d) associated focal abscess, and (e) swelling of the adjacent muscles. On plain radiographs, four cases showed streaky or mottled gas densities in the pelvis, three cases in the perineum, one case in the abdomen, and two cases in the thigh. On CT images, gas pattern was mottled and streaky appearance with swelling of the adjacent muscles. Gas shadows located in the extraperitoneal space in four cases, fascial layer in four cases, and subcutaneous layer in four cases. There were gas shadows in pelvic wall, perineum, abdominal wall, buttock, thigh, and scrotum. Focal low density lesion suggestive of focal abscess was not visualized. Plain radiography is useful for early diagnosis of the necrotizing fasciitis and CT is very useful for detection of precise location and extent of the disease. CT is also useful for differentiation of necrotizing fasciitis from focal abscess and cellulitis.

  10. Radiographic and HRCT findings of pneumocystis carinii pneumonia

    Energy Technology Data Exchange (ETDEWEB)

    Heo, Jin Sam; Kim, Kun Il; Kim, Chang Won; Park, Soon Kew; Cho, Goon Jae [Pusan National Univ. College of Medicine, Seoul (Korea, Republic of)

    1999-08-01

    To analyze the radiographic and HRCT findings of Pneumocystic carinii pneumonia. We reviewed the medical records and retrospectively analysed the chest radiographs(n=31) and HRCT scans(n=17) of 31 patients with Pneumocystis carinii pneumonia who had been followed up at our institute between, 1993 and March 1998. Pneumocystis carinii pneumonia was confirmed by cytologic evaluation of sputum stained with methenamine silver(n=25) or on the basis of clinical history(n=6). The study group included 17 men and 14 women aged 28-78(average, 53.6) years. Twenty-eight patients had underlying conditions such as hematologic diseases(n=13), AIDS(n=8), malignancy(n=2), DM(n=2) and malnutrition(n=1), and three were free from underlying diseases. Twenty patients had pure Pneumocystis carinii pneumonia and 11 had combined lung diseases, namely pulmonary tuberculosis(n=4), pulmonary metastasis(n=2), bacterial pneumonia(n=2), atypical mycobacterial infection(n=1), pulmonary edema(n=1), and Kaposi' s sarcoma(n=1). Chest radiographic findings of 20 cases of pure Pneumocystis carinii pneumonia included consolidation(n=12), linear-reticular opacity(n=8), ill defined haziness(n=7), and nodules(n=6), with bilaterality in is cases and zonal predominance in ten [central(n=5), lower(n=5)]. Ancillary findings included pleural effusion(n=10), cysts(n=5), lymphadenopathy(n=4) and pneumothorax(n=1). In two patients, findings were entirely normal. HRCT findings in ten cases of pure Pneumocystis carinii pneumonia included ground-glass opacity(n=6), consolidation(n=6), linear-reticular opacity(n=8), and nodules(n=5), with bilaterallity in seven cases and zonal predominance in five [central(n=5), lower(n=2)]. Ancillary findings among these cases included pleural effusion(n=4), lymphadenopathy(n=2), cysts(n=1), and pneumothorax(n=1). HRCT findings in seven cases of Pneumocystis carinii pneumonia combined with other lung diseases included nodules(n=6), ground-glass opacity(n=5), linear

  11. Relevance of an incidental chest finding

    Science.gov (United States)

    Cortés-Télles, Arturo; Mendoza, Daniel

    2012-01-01

    Solitary pulmonary nodule represents 0.2% of incidental findings in routine chest X-ray images. One of the main diagnoses includes lung cancer in which small-cell subtype has a poor survival rate. Recently, a new classification has been proposed including the very limited disease stage (VLD stage) or T1-T2N0M0 with better survival rate, specifically in those patients who are treated with surgery. However, current recommendations postulate that surgery remains controversial as a first-line treatment in this stage. We present the case of a 46-year-old female referred to our hospital with a preoperative diagnosis of a solitary pulmonary nodule. On initial approach, a biopsy revealed a small cell lung cancer. She received multimodal therapy with surgery, chemotherapy, and prophylactic cranial irradiation and is currently alive without recurrence on a 2-year follow-up. PMID:22345914

  12. Acute chest syndrome of sickle cell disease: radiographic and clinical analysis of 70 cases

    Energy Technology Data Exchange (ETDEWEB)

    Martin, L. [Department of Radiology, Children`s Hospital, 300 Longwood Avenue, Boston, MA 02115 (United States); Buonomo, C. [Department of Radiology, Children`s Hospital, 300 Longwood Avenue, Boston, MA 02115 (United States)

    1997-08-01

    Background. Acute chest syndrome (ACS) is a pulmonary illness with fever, chest pain, leukocytosis and new pulmonary opacity in a patient with sickle cell disease. It is a common reason for hospitalization in sickle cell patients, and a significant cause of mortality. The etiology of ACS is unclear. Lung or bone infarction and infection, among other possible causes, have been proposed. Objective. We reviewed the chest radiographs and medical records of 41 patients with 70 episodes of ACS and correlated the clinical and radiographic courses in an attempt to better characterize and understand the syndrome. Results. In 87 % of episodes, no identifiable etiology of ACS was found. This group of patients had a median age of 14 years and showed dramatic clinical and radiographic improvement within 24 h of therapy. In the remainder of episodes (13 %), an identifiable etiology was found, usually bacterial pneumonia. These patients were younger than the group without an identifiable etiology (median age 2 years) and had a prolonged radiographic course of illness. Conclusion. The chest radiographs of children with ACS without an identifiable etiology have an extremely typical appearance and evolution. Only in cases which do not have this typical pattern should infection be suspected as the underlying cause. (orig.). With 3 figs.

  13. Effectiveness of embolization for management of hemoptysis pulmonary tuberculosis: comparison of chest radiographic study and angiography

    Energy Technology Data Exchange (ETDEWEB)

    Shin, Sang Chul; Kim, Yong Ju; Park, Joong Wha; Lee Myeong Sub; Kim Dong Jin; Hong In Soo [Yonsei Univ. College of Medicine, Wonju (Korea, Republic of)

    2001-01-01

    To compare the effectiveness of embolization of the bronchial artery embolization for the management of hemoptysis in pulmonary tuberculosis cases with the severity of lung parenchymal injury and pleural infiltration, as seen on plain chest radiographs, and with the findings of angiography of the branchial artery. Among 265 patients with hemoptysis due to pulmonary tuberculosis, the findings of plain chest radiography and angiography of the bronchial artery were comparatively analyzed in the 206 for whom the results of follow up were available. The chest radiographin findings were classified as follows: Type I refers to simple pulmonary tuberculosis; Type II includes cases in which pulmonary tuberculosis is complicated by bronchiectasis, aspergillosis, or cavitation; Type III si either Types I or II acompainted by pleural in filtrates limited to the lung apex, and Type IV includes cases in which pleural infiltrates have extended beyond the apex in the whole the lung. Bronchial angiographic findings were divided into four groups: Group I consists of cases which show abnormalities of only the bronchial artery; Group II includes those in which abnormalities are seen in the bronchial artery and either the internal mammary or an intercostal artery; Group III comprises cases which belong to Group I or II and which a bronch of the subclavian artery is abnormal, and Group IV includes those in which abnormalities occur in at least two branches of the subclavian artery, or there is direct visualization of hypervascularity of this vessel. The initial post-embolic hemostatic effect and the results of follow up were studied over a six-month period. As compared with simple pulmonary tuberculosis (Type I), we found that as the severity of pleural infiltration and complications revealed by plain chest radiographs increased (Type II, III, IV), so did the severity of the manifestation of systemic collateral arteries other than the bronchial artery, as depicted by increased on

  14. Mucopolysaccharidosis: abnormal findings on abdomen and chest excluding musculoskeletal system

    Energy Technology Data Exchange (ETDEWEB)

    Moon, Jeung Hee; Yoon, Dae Young; Seo, Young Lan; Han, Dae Hee; Choi, Chul Soon; Bae, Sang Hoon; Yoon, Young Cheol; Park, Sang Joon [Samsung Medical Center, Seoul (Korea, Republic of); Kim Han, Bok Yung; Yoon, Hye Kyung; Cho, Jae Min [Hallym University College of Medicine, Seoul (Korea, Republic of)

    2003-06-01

    Mucopolysaccharidosis (MPS) is a lysosomal storage disease that causes tissue distortion and dysfunction due to the infiltration of mucopolysaccharide in connective tissue. The purpose of this study was to evaluate the characteristic findings of abdominal CT and plain chest radiography in patients with MPS. Sixty-two children with MPS diagnosed by urine analysis were involved in this study; 24 of these underwent abdominal CT and the findings were reviewed by two radiologists, who reached a consensus. Organomegaly was classified as severe, moderate or mild. On chest PA radiographs of 42 of the children, the transverse diameter of the trachea was measured and compared with that of 42 normal controls. Student's t test was used for statistical analysis. At abdominal CT, hepatomegaly was observed in 22 patients (92%; 2 severe, 15 moderate and 5 mild); and splenomegaly was present in 18 (75%; 2 severe, 4 moderate and 12 mild). Among eight patients(33%) with pancreatic enlargement, one had a severly enlarged pancreas, while in the remaining seven, enlargement was mild. Also present were inguinal hernia (n=15), umbilical hernia (n=12), undulation with thickening of the diaphragmatic crura (n=10), abnormalities related to the male genitalia (n=5) and vascular anomaly (n=3). In MPS patients, the mid-point diameter of the trachea (range, 5.6-9 mm; mean, 6.9 mm) was significantly less than in normal controls (range, 8-14 mm; mean, 10.8 mm) (p<0.001). An awareness of the characteristic abnormalities observed at abdominal CT and chest PA radiography can lead to a better understanding of MPS in children.

  15. Mucopolysaccharidosis: abnormal findings on abdomen and chest excluding musculoskeletal system

    Energy Technology Data Exchange (ETDEWEB)

    KimHan, Bo Kyung; Yoon, Hye Kyung; Cho, Jae Min [Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Moon, Jeung Hee; Yoon, Dae Young; Seo, Young Lan; Han, Dae Hee; Choi, Chul Soon; Bae, Sang Hoon; Yoon, Young Cheol; Park, Sang Joon [Hallym University College of Medicine, Seoul (Korea, Republic of)

    2003-06-01

    Mucopolysaccharidosis (MPS) is a lysosomal storage disease that causes tissue distortion and dysfunction due to the infiltration of mucopolysaccharide in connective tissue. The purpose of this study was to evaluate the characteristic findings of abdominal CT and plain chest radiography in patients with MPS. Sixty-two children with MPS diagnosed by urine analysis were involved in this study; 24 of these underwent abdominal CT and the findings were reviewed by two radiologists, who reached a consensus. Organomegaly was classified as severe, moderate or mild. On chest PA radiographs of 42 of the children, the transverse diameter of the trachea was measured and compared with that of 42 normal controls. Student's t test was used for statistical analysis. At abdominal CT, hepatomegaly was observed in 22 patients (92%; 2 severe, 15 moderate and 5 mild); and splenomegaly was present in 18 (75%; 2 severe, 4 moderate and 12 mild). Among eight patients (33%) with pancreatic enlargement, one had a severly enlarged pancreas, while in the remaining seven, enlargement was mild. Also present were inguinal hernia (n=15), umbilical hernia (n=12), undulation with thickening of the diaphragmatic crura (n=10). abnormalities related to the male genitalia (n=5) and vascular anomaly (n=3). In MPS patients, the mid-point diameter of the trachea (range, 5.6-9 mm; mean, 6.9 mm) was significantly less than in normal controls (range, 8-14 mm; mean, 10.8 mm)(p<0.001). An awareness of the characteristic abnormalities observed at abdominal CT and chest PA radiography can lead to a better understanding of MPS in children.

  16. Chest radiographs in subjects with asbestos-related abnormalities: comparison between ILO categorizations and clinical reading.

    Science.gov (United States)

    Hilt, B; Borgerson, A; Lien, J T; Langård, S

    1992-01-01

    The findings of a previous chest X-ray screening, determined without using standardized criteria, were reassessed by means of the ILO classification. Of 470 radiographs that had been determined as showing asbestos-related changes, 430 were categorized according to the ILO Classification. Small opacities with profusion greater than or equal to 1/0 were described in 39 (52%) of 75 participants who, on the original clinical reading, had been determined as having lung fibrosis, and in 45 (12.7%) of 355 who were determined as having pleural changes only. When considering circumscribed pleural thickening at the chest wall or diaphragm, as categorized by the ILO Classification, such changes were present in 401 (93.7%) of 428 subjects with pleural changes as determined on the clinical reading. In addition to the improved sensitivity and specificity achieved, the ILO Classification also allows comparison with other studies. The most apparent disadvantage of the ILO system is that it cannot firmly separate the various types of asbestos-related pleural changes. The study revealed that the previous asbestos exposure of the case subjects had occurred in many different workplaces and occupations.

  17. The low therapeutic efficacy of postoperative chest radiographs for surgical intensive care unit patients

    NARCIS (Netherlands)

    A. Kröner; E. van Iperen; J. Horn; J.M. Binnekade; P.E. Spronk; J. Stoker; M.J. Schultz

    2011-01-01

    Background. The clinical value of postoperative chest radiographs (CXRs) for surgical intensive care unit (ICU) patients is largely unknown. In the present study, we determined the diagnostic and therapeutic efficacy of postoperative CXRs for different surgical subgroups and related their efficacy t

  18. An improved automatic computer aided tube detection and labeling system on chest radiographs

    Science.gov (United States)

    Ramakrishna, Bharath; Brown, Matthew; Goldin, Jonathan; Cagnon, Christopher; Enzmann, Dieter

    2012-03-01

    Tubes like Endotracheal (ET) tube used to maintain patient's airway and the Nasogastric (NG) tube used to feed the patient and drain contents of the stomach are very commonly used in Intensive Care Units (ICU). The placement of these tubes is critical for their proper functioning and improper tube placement can even be fatal. Bedside chest radiographs are considered the quickest and safest method to check the placement of these tubes. Tertiary ICU's typically generate over 250 chest radiographs per day to confirm tube placement. This paper develops a new fully automatic prototype computer-aided detection (CAD) system for tube detection on bedside chest radiographs. The core of the CAD system is the randomized algorithm which selects tubes based on their average repeatability from seed points. The CAD algorithm is designed as a 5 stage process: Preprocessing (removing borders, histogram equalization, anisotropic filtering), Anatomy Segmentation (to identify neck, esophagus, abdomen ROI's), Seed Generation, Region Growing and Tube Selection. The preliminary evaluation was carried out on 64 cases. The prototype CAD system was able to detect ET tubes with a True Positive Rate of 0.93 and False Positive Rate of 0.02/image and NG tubes with a True Positive Rate of 0.84 and False Positive Rate of 0.02/image respectively. The results from the prototype system show that it is feasible to automatically detect both tubes on chest radiographs, with the potential to significantly speed the delivery of imaging services while maintaining high accuracy.

  19. Reporting instructions significantly impact false positive rates when reading chest radiographs

    Energy Technology Data Exchange (ETDEWEB)

    Robinson, John W.; Brennan, Patrick C.; Mello-Thoms, Claudia; Lewis, Sarah J. [The University of Sydney, Medical Image Optimisation and Perception Group, Discipline of Medical Radiation Sciences, Faculty of Health Sciences, Lidcombe, NSW (Australia)

    2016-10-15

    To determine the impact of specific reporting tasks on the performance of radiologists when reading chest radiographs. Ten experienced radiologists read a set of 40 postero-anterior (PA) chest radiographs: 21 nodule free and 19 with a proven solitary nodule. There were two reporting conditions: an unframed task (UFT) to report any abnormality and a framed task (FT) reporting only lung nodule/s. Jackknife free-response operating characteristic (JAFROC) figure of merit (FOM), specificity, location sensitivity and number of true positive (TP), false positive (FP), true negative (TN) and false negative (FN) decisions were used for analysis. JAFROC FOM for tasks showed a significant reduction in performance for framed tasks (P = 0.006) and an associated decrease in specificity (P = 0.011) but no alteration to the location sensitivity score. There was a significant increase in number of FP decisions made during framed versus unframed tasks for nodule-containing (P = 0.005) and nodule-free (P = 0.011) chest radiographs. No significant differences in TP were recorded. Radiologists report more FP decisions when given specific reporting instructions to search for nodules on chest radiographs. The relevance of clinical history supplied to radiologists is called into question and may induce a negative effect. (orig.)

  20. Reduction of adult fingers visualized on pediatric intensive care unit (PICU) chest radiographs after radiation technologist and PICU staff radiation safety education

    Energy Technology Data Exchange (ETDEWEB)

    Tynan, J.R.; Duncan, M.D.; Burbridge, B.E., E-mail: jentynan@hotmail.com [Univ. of Saskatchewan, Royal Univ. Hospital, Dept. of Medical Imaging, Saskatoon, Saskatchewan (Canada)

    2009-10-15

    A recent publication from our centre revealed a disturbing finding of a significant incidence of adult fingers seen on the pediatric intensive care unit (PICU) chest radiographs. This is inappropriate occupational exposure to diagnostic radiation. We hypothesized that the incidence of adult fingers on PICU chest radiographs would decline after radiation safety educational seminars were given to the medical radiation technologists and PICU staff. The present study's objectives were addressed by using a pretest-posttest design. Two cross-sectional PICU chest radiograph samples, taken before and after the administration of radiation safety education for our medical radiation technologists and PICU staff, were compared by using a {chi}{sup 2} test. There was a 61.2% and 76.9% reduction in extraneous adult fingers, directly exposed to the x-ray beam and those seen in the coned regions of the film, respectively, on PICU chest radiographs (66.7% reduction overall). This reduction was statistically significant ({chi}2 = 20.613, P < .001). Limiting unnecessary occupational radiation exposure is a critical issue in radiology. There was a statistically and clinically significant association between radiation safety education and the decreased number of adult fingers seen on PICU chest radiographs. This study provides preliminary evidence in favour of the benefit of radiation safety seminars. (author)

  1. A Regional Dose and Image Quality Survey for Chest, Abdomen and Pelvis Radiographs in Paediatrics

    Energy Technology Data Exchange (ETDEWEB)

    Lopez, M.; Morant, J.J.; Geleijns, K.; Calzado, A

    2000-07-01

    A dosimetric survey in paediatric radiology is currently being carried out, aiming at the assessment of patient dose and image quality for chest, abdomen and pelvis radiographs in some age categories at five hospitals in the Tarragona area. Entrance surface dose measurements were performed using homogeneous PMMA phantoms. Effective doses were assessed through the application of published conversion factors. The range of entrance doses averaged by sites was 75-729 {mu}Gy for pelvis radiographs of children aged 5 months, 813-1600 {mu}Gy for pelvis radiographs of children aged 5 years, 94-250 {mu}Gy for chest radiographs of children aged 5 years and 980-2300 {mu}Gy for abdomen radiographs of children aged 5 years. The reference dose values given in the European Guidelines on Quality Criteria for Diagnostic Radiographic Images in Paediatrics were exceeded at two or more hospitals for all projections. The range of average effective dose for the analysed examinations was 14-245 {mu}Sv. The maximum ratios of effective dose by sites varied between 2.2 and 11 for the analysed projections. By examination type, average values in the range 100 to 245 {mu}Sv were estimated for 5 year pelvis and abdomen examinations. (author)

  2. 重症甲型H1N1流感患者的胸部X线和CT特征分析%Chest X-ray Radiographic and CT Findings in Severe A(H1N1) Virus Infection

    Institute of Scientific and Technical Information of China (English)

    陈伟; 何波; 袁峰; 孙学进; 赵卫

    2011-01-01

    Objective To study X-ray radiographic and CT findings in patients with severe A (H1N1)virus infection. Method We reviewed the chest X-ray radiographic and CT findings of 24 patients with confrmed severe A (H1N1) virus infection in our hospital from November 2009 to December 2009. Results (1) The initial radiograph was normal in 4 patients among 24 patients with severe A (H1N1) virus infection. (2) Chest radiography and CT found ground-glass opacity in the lungs accounted for 53% and 67%, and mixed groundglass opacity with consolidation accounted for 37% and 62%. Ground-glass is mainly located in the lower part of the pleura around the lung, and ground-glass with consolidation is mainly located in the lower lung and central lung. (3) Chest radiography and CT found 3 cases and 5 cases of pleural effusion, and 2 cases and 9 cases of pleural thickening, respectively. (4) No patients were found with evident hilar or mediastinal lymph node enlargement by radiography or CT scans. Conclusions The predominant radiographic and CT findings are ground-glass opacity, following by ground- glass opacity with consolidation, without mediastinal and hilar lymph node enlargement, and the pleura can be involved on both chest radiography and CT. The findings of chest radiography and CT are consistent, but CT can find the lung lesions earlier than chest radiograph. CT can show the morphology and distribution of the lesions more clearly, so can increase the positive rate of lung lesions in severe A (H1N1). Also the chest radiography and CT can provide more clinical information to help clinicians find lesions in the lung early, give treatment in time, observe disease development and clinical evaluation.%目的 探讨重症甲型H1N1流感患者的胸部X线及CT表现.方法 回顾性分析经确诊的24例重症甲型H1N1流感患者的胸部X线及CT表现.结果 (1)24例中4例患者入院时胸部X线检察无异常发现;(2)X线及CT发现肺部磨玻璃影分别占53%、67

  3. Bronchopulmonary dysplasia: correlation of radiographic and clinical findings

    Energy Technology Data Exchange (ETDEWEB)

    Breysem, L. [Department of Radiology, University Hospitals, K. U. Leuven, Herestraat 49, B-3000 Leuven (Belgium); Smet, M.H. [Department of Radiology, University Hospitals, K. U. Leuven, Herestraat 49, B-3000 Leuven (Belgium); Lierde, S. van [Department of Pediatrics, University Hospitals of Leuven, Leuven (Belgium); Devlieger, H. [Department of Pediatrics, University Hospitals of Leuven, Leuven (Belgium); Boeck, K. de [Department of Pediatrics, University Hospitals of Leuven, Leuven (Belgium); Marchal, G. [Department of Radiology, University Hospitals, K. U. Leuven, Herestraat 49, B-3000 Leuven (Belgium)

    1997-08-01

    Background and purpose. Abnormalities of the chest wall have been described in bronchopulmonary dysplasia (BPD). Clinical, radiographic and pulmonary function variables were evaluated in 1-year-old children ventilated because of neonatal lung disease in order to quantify these thoracic changes and to evaluate the lung disease. Methods. The pulmonary status of 51 infants with neonatal lung disease requiring artificial ventilation was reevaluated clinically and radiographically at the age of 1 year. Twenty-two of these infants had developed BPD. Thoracic depth and width were measured clinically and on chest X-ray. The Toce score evaluated the presence of cardiomegaly, hyperinflation, emphysema and interstitial lung disease. Lung function was measured after sedation using previously reported methods. In BPD patients, Toce score and lung function were determined and compared at 1 month and at 1 year of age. Results. In BPD patients, chest depth was significantly smaller when measured clinically as well as on chest radiograph (P < 0.05; Mann-Whitney U-test). There was a statistically significant correlation between chest depth measured clinically and on chest X-ray. Toce score was significantly higher in BPD patients (P < 0.05). In BPD patients intersitial abnormalities and decreased lung compliance were more frequent at the age of 1 month than at the age of 1 year. At the age of 1 year, hyperinflation was more frequent and at that time increased airway resistance was still noted. Thus the type of X-ray abnormality reflects the type of lung function disturbance. Conclusion. The flatness of the chest is most likely a consequence of the long-standing lung function abnormalities. (orig.). With 3 figs., 6 tabs.

  4. Imaging of implants on chest radiographs: a radiological perspective

    Energy Technology Data Exchange (ETDEWEB)

    Burney, K. [Department of Clinical Radiology, Bristol Royal Infirmary (United Kingdom)]. E-mail: kburney@doctors.org.uk; Thayur, N. [Department of Clinical Radiology, Bristol Royal Infirmary (United Kingdom); Husain, S.A. [Department of Respiratory Medicine, Bristol Royal Infirmary (United Kingdom); Martin, R.P. [Department of Cardiology, Bristol Royal Hospital for Children, Bristol (United Kingdom); Wilde, P. [Department of Clinical Radiology, Bristol Royal Infirmary (United Kingdom)

    2007-03-15

    Endovascular and percutaneous techniques have emerged as alternatives to surgical management in the treatment for a wide range of congenital and acquired cardiac, non-vascular and vascular conditions. Consequently, there has been an increasing use of implants such as closure devices, vascular stents (coronary, aortic, pulmonary and superior vena cava) and non-vascular stents like oesophageal and tracheo-bronchial stents. A large number of percutaneously sited implants are used for treating congenital cardiac anomalies such as atrial septal defects (ASD), ventricular septal defects (VSD), and patent ductus arteriosus (PDA). These implants take many shapes and forms. The aim of this review is to demonstrate the radiographic appearances of the various types of cardiovascular, bronchial and oesophageal implants that are visible on plain films. A brief outline of the aims and indications of various implant procedures, the general appearance of the commonest types of implants, and the radiological procedures are discussed. All radiologists are likely to come across implanted devices in plain film reporting. Imaging can be useful in identifying the device, assessing the position, integrity, and for the identification of complications related directly to the implant.

  5. [The chest CT findings and pathologic findings of pulmonary tuberculosis].

    Science.gov (United States)

    Ogata, Hideo

    2009-08-01

    The past research of the radiologic manifestations of pulmonary tuberculosis in Japan was based on morphological pathology of the untreated patient autopsy. I would like to show the chest CT scan of tuberculosis diseases with caseous granuloma at its exudative reaction, proliferative reaction, productive reaction, cirrhotic reaction until self cure. This progress reflects the normal cell mediated immunological responses. Also I would like to show the cavitation of granuloma, which results from liquefaction of caseous materials during the course and results in the formation of the source of infection. And finally I would like to show the morphological differences of acinous lesion, acino-nodular lesion and caseous lobular pneumonia. These differences reflect the amount of bacilli disseminated in the peripheral parts under the lobules. In this study, I do not show old age cases and HIV positive cases, who do not form typical granuloma due to the decreased cell mediated immnunity and whose X ray findings are atypical.

  6. Foreign object detection and removal to improve automated analysis of chest radiographs

    Energy Technology Data Exchange (ETDEWEB)

    Hogeweg, Laurens; Sanchez, Clara I.; Melendez, Jaime; Maduskar, Pragnya; Ginneken, Bram van [Diagnostic Image Analysis Group, Radboud University Nijmegen Medical Centre, Nijmegen 6525 GA (Netherlands); Story, Alistair; Hayward, Andrew [University College London, Centre for Infectious Disease Epidemiology, London NW3 2PF (United Kingdom)

    2013-07-15

    Purpose: Chest radiographs commonly contain projections of foreign objects, such as buttons, brassier clips, jewellery, or pacemakers and wires. The presence of these structures can substantially affect the output of computer analysis of these images. An automated method is presented to detect, segment, and remove foreign objects from chest radiographs.Methods: Detection is performed using supervised pixel classification with a kNN classifier, resulting in a probability estimate per pixel to belong to a projected foreign object. Segmentation is performed by grouping and post-processing pixels with a probability above a certain threshold. Next, the objects are replaced by texture inpainting.Results: The method is evaluated in experiments on 257 chest radiographs. The detection at pixel level is evaluated with receiver operating characteristic analysis on pixels within the unobscured lung fields and an A{sub z} value of 0.949 is achieved. Free response operator characteristic analysis is performed at the object level, and 95.6% of objects are detected with on average 0.25 false positive detections per image. To investigate the effect of removing the detected objects through inpainting, a texture analysis system for tuberculosis detection is applied to images with and without pathology and with and without foreign object removal. Unprocessed, the texture analysis abnormality score of normal images with foreign objects is comparable to those with pathology. After removing foreign objects, the texture score of normal images with and without foreign objects is similar, while abnormal images, whether they contain foreign objects or not, achieve on average higher scores.Conclusions: The authors conclude that removal of foreign objects from chest radiographs is feasible and beneficial for automated image analysis.

  7. Comparison of Haller index values calculated with chest radiographs versus CT for pectus excavatum evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Khanna, Geetika; Jaju, Alok; Don, Steven; Hildebolt, Charles F. [Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, MO (United States); Keys, Tim [Medical Physics Services Ltd., St Louis, MO (United States)

    2010-11-15

    Pectus excavatum is a common chest wall anomaly in children. Pre-operative imaging for pectus excavatum is performed with CT, which is used to calculate the Haller index to determine the severity of pectus excavatum. To determine the correlation between Haller index values calculated with two-view chest radiographs and those calculated with CT and to determine, with CT as the reference standard, the diagnostic performance of radiographic Haller index for identifying cases that meet imaging criteria for surgical correction of pectus excavatum. For the period 2001-2009, our radiology information system was searched to identify all children who had undergone CT for Haller index calculation. Children who had also undergone two-view chest radiography (CXR) within 6 months of the CT were included in this retrospective study. Two radiologists independently calculated CT Haller index and radiographic Haller index. Data distributions were tested for normality with the Shapiro-Wilk W test. The associations between CT Haller index and radiographic Haller index were determined with the Spearman coefficient of rank correlation. Differences between CT Haller index and radiographic Haller index were tested with the Wilcoxon signed rank test. Haller index values were dichotomized into positive (>3.2) and negative ({<=}3.2) cases. Using CT as the reference standard, the sensitivity, specificity, and accuracy of radiographic Haller index in identifying children who meet imaging criteria for surgery were calculated. CT and CXR for evaluation of pectus excavatum were available for 32 children (25 male; median age 14.5 years). With CT, the median Haller indices for observers 1 and 2 were 3.4 and 3.5 and with CXR 3.5 and 3.5. There were statistically significant correlations between the radiographic Haller index and CT Haller index estimated by the two observers [Spearman correlation coefficient (95% confidence interval) for observer 1 = 0.71 (0.48-0.85, P < 0.01) and for observer 2 = 0

  8. INCIDENTAL RADIOGRAPHIC FINDINGS AND THEIR RESTORAT IVE IMPLICATIONS

    Directory of Open Access Journals (Sweden)

    Sridevi

    2012-09-01

    Full Text Available ABSTRACT: Radiographs are an irreplaceable diagnostic tool, es pecially in dealing with dentofacial hard tissues. Guidelines like the ALARA require professionals to limit the number of radiographs prescribed to patient, thereby minimizing radiation dose. On the other hand, for prosthetic evaluation, a latest radiograph has the po tential to uncover new findings that can alter the treatment planning sequence or affect the outcome of the planned treatment. This review article discusses ten such radiographs. The s ignificant findings in each radiograph have been highlighted and treatment protocols tailored t o the same. The aim of this article is to help the reader adopt a meticulous approach and a keen eye for detecting problems, and emphasizes the efficacy of radiographs in patient evaluation for restorative care

  9. Artificial neural networks in chest radiographs: detection and characterization of interstitial lung disease

    Science.gov (United States)

    Ishida, Takayuki; Katsuragawa, Shigehiko; Ashizawa, Kazuto; MacMahon, Heber; Doi, Kunio

    1997-04-01

    We have developed a computerized scheme for detection of interstitial lung disease by using artificial neural networks (ANNs) on quantitative analysis of digital image data. Three separate ANNs wee applied for the ANN scheme. The first ANN was trained with horizontal profiles in the ROIs selected from digital chest radiographs. The second ANN was trained with vertical output pattern obtained from the 1st ANN in each ROI. The output from the 2nd ANN was used to distinguish between normal and abnormal ROIs. In order to improve the performance, we attempted a density correction and rib edge removal. The Az value was improved from 0.906 to 0.934 by incorporating density correction. For the classification of each chest image, we employed a rule-based method and a rule-based plus the third ANN method. A high Az value was obtained with the rule-based plus ANN method. The ANNs can learn certain statistical properties associate with patterns of interstitial infiltrates in chest radiographs.

  10. Effective dose conversion coefficients for X-ray radiographs of the chest and the abdomen

    Energy Technology Data Exchange (ETDEWEB)

    Lima, F.R.A. [Centro regional de Ciencias Nucleares, CRCN/CNEN, Rua Conego Barata, 999, Tamarineira, Recife, PE (Brazil); Kramer, R.; Vieira, J.W.; Khoury, H.J. [Departamento de Energia Nuclear, DEN/UFPE, Cidade Universitaria, Recife, PE (Brazil)]. E-mail: falima@cnen.gov.br

    2004-07-01

    The recently developed MAX (Male Adult voXel) and the FAXht (Female Adult voXel) head and trunk phantoms have been used to calculate organ and tissue equivalent dose conversion coefficients for X-ray radiographs of the chest and the abdomen as a function of source and field parameters, like voltage, filtration, field size, focus-to-skin distance, etc. Based on the equivalent doses to twenty three organs and tissues at risk, the effective dose has been determined and compared with corresponding data for others phantoms. The influence of different radiation transport codes, different tissue compositions and different human anatomies have been investigated separately. (Author)

  11. Novel Method to Improve Radiologist Agreement in Interpretation of Serial Chest Radiographs in the ICU

    Directory of Open Access Journals (Sweden)

    Denise A Castro

    2015-01-01

    Full Text Available Objectives: To determine whether a novel method and device, called a variable attenuation plate (VAP, which equalizes chest radiographic appearance and allows for synchronization of manual image windowing with comparison studies, would improve consistency in interpretation. Materials and Methods: Research ethics board approved the prospective cohort pilot study, which included 50 patients in the intensive care unit (ICU undergoing two serial chest radiographs with a VAP placed on each one of them. The VAP allowed for equalization of density and contrast between the patients′ serial chest radiographs. Three radiologists interpreted all the studies with and without the use of VAP. Kappa and percent agreement was used to calculate agreement between radiologists′ interpretations with and without the plate. Results: Radiologist agreement was substantially higher with the VAP method, as compared to that with the non-VAP method. Kappa values between Radiologists A and B, A and C, and B and C were 46%, 55%, and 51%, respectively, which improved to 73%, 81%, and 66%, respectively, with the use of VAP. Discrepant report impressions (i.e., one radiologist′s impression of unchanged versus one or both of the other radiologists stating improved or worsened in their impression ranged from 24 to 28.6% without the use of VAP and from 10 to 16% with the use of VAP (χ2 = 7.454, P < 0.01. Opposing views (i.e., one radiologist′s impression of improved and one of the others stating disease progression or vice versa were reported in 7 (12% cases in the non-VAP group and 4 (7% cases in the VAP group (χ2 = 0.85, P = 0.54. Conclusion: Numerous factors play a role in image acquisition and image quality, which can contribute to poor consistency and reliability of portable chest radiographic interpretations. Radiologists′ agreement of image interpretation can be improved by use of a novel method consisting of a VAP and associated software and has the potential

  12. Analysis of biological tissues in infant chest for the development of an equivalent radiographic phantom

    Energy Technology Data Exchange (ETDEWEB)

    Pina, D. R.; Souza, Rafael T. F.; Duarte, Sergio B.; Alvarez, Matheus; Miranda, Jose R. A. [Faculdade de Medicina de Botucatu, Departamento de Doencas Tropicais e Diagnostico por Imagem, Universidade Estadual Paulista-UNESP, Distrito de Rubiao Junior S/N, Botucatu, 18618-000 Sao Paulo (Brazil); Instituto de Biociencias de Botucatu, Departamento de Fisica e Biofisica, Universidade Estadual Paulista-UNESP, Distrito de Rubiao Junior S/N, Botucatu, 18618-000 Sao Paulo (Brazil); Centro Brasileiro de Pesquisas Fisicas-CBPF/MCT, Rio de Janeiro 22290-180 (Brazil); Instituto de Biociencias de Botucatu, Departamento de Fisica e Biofisica, Universidade Estadual Paulista-UNESP, Distrito de Rubiao Junior S/N, Botucatu, 18618-000 Sao Paulo (Brazil); Instituto de Biociencias de Botucatu, Departamento de Fisica e Biofisica, Universidade Estadual Paulista-UNESP, Distrito de Rubiao Junior S/N, Botucatu, 18618-000 Sao Paulo (Brazil)

    2012-03-15

    Purpose: The main purpose of the present study was to determine the amounts of different tissues in the chest of the newborn patient (age {<=}1 year), with the aim of developing a homogeneous phantom chest equivalent. This type of phantom is indispensable in the development of optimization procedures for radiographic techniques, including dosimetric control, which is a crucial aspect of pediatric radiology. The authors present a systematic set of procedures, including a computational algorithm, to estimate the amounts of tissues and thicknesses of the corresponding simulator material plates used to construct the phantom. Methods: The Gaussian fit of computed tomographic (CT) analysis was applied to classify and quantify different biological tissues. The methodology is summarized with a computational algorithm, which was used to quantify tissues through automated CT analysis. The thicknesses of the equivalent homogeneous simulator material plates were determined to construct the phantom. Results: A total of 180 retrospective CT examinations with anterior-posterior diameter values ranging 8.5-13.0 cm were examined. The amounts of different tissues were evaluated. The results provided elements to construct a phantom to simulate the infant chest in the posterior-anterior or anterior-posterior (PA/AP) view. Conclusions: To our knowledge, this report represents the first demonstration of an infant chest phantom dedicated to the radiology of children younger than one year. This phantom is a key element in the development of clinical charts for optimizing radiographic technique in pediatric patients. Optimization procedures for nonstandard patients were reported previously [Pina et al., Phys. Med. Biol. 49, N215-N226 (2004) and Pina et al., Appl. Radiat. Isot. 67, 61-69 (2009)]. The constructed phantom represents a starting point to obtain radiologic protocols for the infant patient.

  13. HRCT findings of chest complications in patients with leukemia

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, Nobuyuki; Matsumoto, Tsuneo; Miura, Gouji; Emoto, Takuya; Matsunaga, Naofumi [Department of Radiology, Yamaguchi University School of Medicine (Japan)

    2002-06-01

    High-resolution CT (HRCT) findings of several chest complications occurring in leukemic patients were reviewed. Although most entities show non-specific HRCT findings including ground-glass opacity and air-space consolidation, characteristic findings are observed in several pulmonary complications including Pneumocystis carinii pneumonia, fungal infections, miliary tuberculosis, leukemic infiltration, pulmonary edema, bronchiolitis obliterans, and bronchiolitis obliterans organizing pneumonia. A combination of these characteristic HRCT findings and the information obtained from the clinical setting may help in achieving a correct diagnosis of chest complications occurring in leukemic patients. (orig.)

  14. Radiographic oral findings and death risk in the elderly

    OpenAIRE

    Soikkonen, K. (Kari)

    1999-01-01

    Abstract Radiographic oral and maxillofacial findings were recorded in a cohort of 293 home living elderly, in Helsinki, Finland, derived from a random sample of 8035 subjects, , born in 1904, 1909, and 1912, who participated in the Helsinki Ageing Study. They were 76, 81, and 86 years old at the commencement of the radiographic study. The relationships of potentially infectious findings with increased all-cause mortality over four years were studied. During the four-year...

  15. Pneumothorax detection in chest radiographs using local and global texture signatures

    Science.gov (United States)

    Geva, Ofer; Zimmerman-Moreno, Gali; Lieberman, Sivan; Konen, Eli; Greenspan, Hayit

    2015-03-01

    A novel framework for automatic detection of pneumothorax abnormality in chest radiographs is presented. The suggested method is based on a texture analysis approach combined with supervised learning techniques. The proposed framework consists of two main steps: at first, a texture analysis process is performed for detection of local abnormalities. Labeled image patches are extracted in the texture analysis procedure following which local analysis values are incorporated into a novel global image representation. The global representation is used for training and detection of the abnormality at the image level. The presented global representation is designed based on the distinctive shape of the lung, taking into account the characteristics of typical pneumothorax abnormalities. A supervised learning process was performed on both the local and global data, leading to trained detection system. The system was tested on a dataset of 108 upright chest radiographs. Several state of the art texture feature sets were experimented with (Local Binary Patterns, Maximum Response filters). The optimal configuration yielded sensitivity of 81% with specificity of 87%. The results of the evaluation are promising, establishing the current framework as a basis for additional improvements and extensions.

  16. A Solitary Feature-based Lung Nodule Detection Approach for Chest X-Ray Radiographs.

    Science.gov (United States)

    Li, Xuechen; Shen, Linlin; Luo, Suhuai

    2017-01-31

    Lung cancer is one of the most deadly diseases. It has a high death rate and its incidence rate has been increasing all over the world. Lung cancer appears as a solitary nodule in chest x-ray radiograph (CXR). Therefore, lung nodule detection in CXR could have a significant impact on early detection of lung cancer. Radiologists define a lung nodule in chest x-ray radiographs as "solitary white nodule-like blob". However, the solitary feature has not been employed for lung nodule detection before. In this paper, a solitary feature-based lung nodule detection method was proposed. We employed stationary wavelet transform and convergence index filter to extract the texture features and used AdaBoost to generate white nodule-likeness map. A solitary feature was defined to evaluate the isolation degree of candidates. Both the isolation degree and the white nodule-likeness were used as final evaluation of lung nodule candidates. The proposed method shows better performance and robustness than those reported in previous research. More than 80% and 93% of lung nodules in the lung field in the JSRT database were detected when the false positives per image was two and five, respectively. The proposed approach has the potential of being used in clinical practice.

  17. Lung involvement quantification in chest radiographs; Quantificacao de comprometimento pulmonar em radiografias de torax

    Energy Technology Data Exchange (ETDEWEB)

    Giacomini, Guilherme; Alvarez, Matheus; Oliveira, Marcela de; Miranda, Jose Ricardo A. [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Instituto de Biociencias. Departamento de Fisica e Biofisica; Pina, Diana R.; Pereira, Paulo C.M.; Ribeiro, Sergio M., E-mail: giacomini@ibb.unesp.br [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil). Faculdade de Medicina. Departamento de Doencas Tropicais e Diagnostico por Imagem

    2014-12-15

    Tuberculosis (TB) caused by Mycobacterium tuberculosis, is an infectious disease which remains a global health problem. The chest radiography is the commonly method employed to assess the TB's evolution. The methods for quantification of abnormalities of chest are usually performed on CT scans (CT). This quantification is important to assess the TB evolution and treatment and comparing different treatments. However, precise quantification is not feasible for the amount of CT scans required. The purpose of this work is to develop a methodology for quantification of lung damage caused by TB through chest radiographs. It was developed an algorithm for computational processing of exams in Matlab, which creates a lungs' 3D representation, with compromised dilated regions inside. The quantification of lung lesions was also made for the same patients through CT scans. The measurements from the two methods were compared and resulting in strong correlation. Applying statistical Bland and Altman, all samples were within the limits of agreement, with a confidence interval of 95%. The results showed an average variation of around 13% between the two quantification methods. The results suggest the effectiveness and applicability of the method developed, providing better risk-benefit to the patient and cost-benefit ratio for the institution. (author)

  18. Interpretation of chest radiographs in both cancer and other critical care patients with acute respiratory distress syndrome

    Directory of Open Access Journals (Sweden)

    Sema Yilmaz

    2013-04-01

    Full Text Available Acute respiratory distress syndrome is a clinical, pathophysiological and radiographic pattern that has signs of pulmonary edema occur without elevated pulmonary venous pressures. Clinical presentation and progression of acute respiratory distress syndrome are followed by frequently ordered portable chest X-ray in critically ill patients. We evaluated chest radiographs of ten cancer and other six critical care pediatric patients. The parenchymal imaging of lung in patients with cancer was reported the same as that of other critically ill children despite underlying pathophysiological variations in our investigation. [Cukurova Med J 2013; 38(2.000: 270-273

  19. Chest radiographs fail to detect right ventricular enlargement and right atrial enlargement in patients with a pure restrictive ventilatory impairment.

    Science.gov (United States)

    Shivkumar, K; Ravi, K; Henry, J W; Eichenhorn, M S; Stein, P D

    1994-08-01

    The validity of measurements of the cardiac silhouette on chest radiographs for the evaluation of right ventricular enlargement and right atrial enlargement in patients with a pure restrictive ventilatory impairment was investigated in 19 patients. The forced vital capacity (FVC) percent predicted in these patients was 59 +/- 12 percent (mean +/- SD) (range, 29 to 79 percent). Right ventricular enlargement, by two-dimensional echocardiography, was defined as a right ventricular area > 20.4 cm2 and right atrial enlargement was defined as a right atrial area > 15.3 cm2. Chest radiographic measurements in the posteroanterior (PA) projection included distance from the midline to the farthest point of the right border of the cardiac silhouette, transverse cardiac diameter, and cardiothoracic ratio. Measurements in the lateral projection included the lateral horizontal transverse diameter, ventral portion of the lateral broad diameter, and obliteration of the retrosternal space. Neither the right ventricular area nor the right atrial area correlated with any of these radiographic measurements. There were no differences in these chest radiographic measurements among patients with normal right ventricular and right atrial dimensions, patients with right ventricular enlargement, and patients with right atrial enlargement. We conclude, therefore, that PA and lateral chest radiographs do not reliably detect right ventricular enlargement or right atrial enlargement in patients with a pure restrictive ventilatory impairment.

  20. H1N1 influenza in an Irish population: patterns of chest radiograph abnormality in patients testing positive.

    LENUS (Irish Health Repository)

    O'Sullivan, K

    2012-02-29

    The winter of 2010\\/2011 saw a second peak in the number of H1N1 cases detected in Ireland. The purpose of this study was to investigate the radiological characteristics of patients diagnosed during this period. A retrospective analysis of these cases was performed. Chest radiographs were classified as normal or abnormal. A total of 37 patients were included. Of these, 22 (59%) of chest radiographs were abnormal and 15 (41%) were normal. In the 7 paediatric patients, 4 (57%) had a perihilar distribution of disease, 2 (28%) had peripherally based disease with 1 (14%) having a mixed distribution. A series of radiographs was available for 9 patients, 6 of these showed a radiographic deterioration from the initial study. The majority of chest radiographs of patients with confirmed H1N1 infection will be abnormal. In children, disease is more likely to be perihilar in distribution. Chest radiography is an important initial investigation in patients with H1N1 infection and is useful to track progression of disease in the subset of patients requiring hospitalization for severe disease.

  1. Gradual progression of intrapulmonary lymph nodes associated with usual interstitial pneumonia in progressive systemic sclerosis on chest radiographs and CT

    Energy Technology Data Exchange (ETDEWEB)

    Ohm, Joon Young; Chung, Myung Hee; Kim, Seon Mun [The Catholic Univ. of Korea, Seoul (Korea, Republic of); Kim, Yong Hyun [The Catholic Univ. of Korea, Bucheon (Korea, Republic of)

    2012-10-15

    A 40 year old female visited the clinic for evaluation of Raynaud's phenomenon for a period of four years. The initial chest radiograph showed a fine reticular density and ground glass opacity with lower lobe predominance. These findings are consistent interstitial fibrosis. Additionally, high resolution CT showed multiple, small, coexisting nodular opacities, ranging from 3 to 7 mm in size in both lungs. These nodules grew up to 1.5 cm and showed moderate enhancement. Because of the rareness of intrapulmonary lymph node in patient of progressive systemic sclerosis, we couldn't exclude the possibility of malignancy. These nodules are turned out to be intrapulmonary lymph nodes on video assisted thoracoscopic lung biopsy.

  2. Rotator cuff tears: clinical, radiographic, and US findings.

    Science.gov (United States)

    Moosikasuwan, Josh B; Miller, Theodore T; Burke, Brian J

    2005-01-01

    Rotator cuff tears are a common cause of shoulder pain. Clinical and radiographic findings can suggest the presence of a rotator cuff tear. The most sensitive clinical findings are impingement and the "arc of pain" sign. Radiographic findings are usually normal in the acute setting, although the "active abduction" view may show decreased acromiohumeral distance. In more chronic cases, an outlet view may show decreased opacity and decreased size of the supraspinatus muscle due to atrophy. In late cases, the humeral head may become subluxated superiorly, and secondary degenerative arthritis of the glenohumeral joint may ensue. Ultrasonography (US), with over 90% sensitivity and specificity, can help confirm the diagnosis in clinically or radiographically equivocal cases. US can also reveal the presence of other abnormalities that may mimic rotator cuff tear at clinical examination, including tendinosis, calcific tendinitis, subacromial subdeltoid bursitis, greater tuberosity fracture, and adhesive capsulitis.

  3. Central venous cannulation: are routine chest radiographs necessary after B-mode and colour Doppler sonography check?

    Energy Technology Data Exchange (ETDEWEB)

    Lanza, Cecilia; Fabrizzi, Giancarlo [Pediatric Radiology Department-Presidio Salesi, Azienda Ospedaliero-Universitaria Ospedali Riuniti, Ancona (Italy); Russo, Marco [Ospedale Civile Engles Profili, Servizio di Radiologia, Ancona (Italy)

    2006-12-15

    After the insertion of a central venous catheter, a chest radiograph is usually obtained to ensure correct positioning of the catheter tip. To determine in a paediatric population whether B-mode and colour Doppler sonography after central venous access is useful to evaluate catheter position, thus obviating the need for a postprocedural radiograph. A prospective study of 107 consecutive central venous access procedures placed in a paediatric intensive care unit was performed. At the end of the procedure, B-mode and colour Doppler sonography were used to assess catheter position and check for complications. A postprocedural chest radiograph was obtained in all patients. In 96 patients postprocedural B-mode and colour Doppler sonography showed colour Doppler signals within the vena cava. Among the 11 patients predicted to have a potential complication, there was one pneumothorax and ten malpositions. Chest radiography showed a total of 13 complications - 1 pneumothorax and 12 malpositions. The concordance between colour Doppler sonography and chest radiography was 98.1% in the detection of catheter position; sonography had a sensitivity of 84.6% and a specificity of 100%. The close concordance between B-mode and colour Doppler sonography and chest radiography justifies the more frequent use of sonography to evaluate catheter position because ionizing radiation is eliminated. Chest radiography may then be performed only when there is suspected inappropriate catheter tip position after sonography. (orig.)

  4. The transverse diameter of the chest on routine radiographs reliably estimates gestational age and weight in premature infants

    Energy Technology Data Exchange (ETDEWEB)

    Dietz, Kelly R. [University of Minnesota, Department of Radiology, Minneapolis, MN (United States); Zhang, Lei [University of Minnesota, Biostatistical Design and Analysis Center, Minneapolis, MN (United States); Seidel, Frank G. [Lucile Packard Children' s Hospital, Department of Radiology, Stanford, CA (United States)

    2015-08-15

    Prior to digital radiography it was possible for a radiologist to easily estimate the size of a patient on an analog film. Because variable magnification may be applied at the time of processing an image, it is now more difficult to visually estimate an infant's size on the monitor. Since gestational age and weight significantly impact the differential diagnosis of neonatal diseases and determine the expected size of kidneys or appearance of the brain by MRI or US, this information is useful to a pediatric radiologist. Although this information may be present in the electronic medical record, it is frequently not readily available to the pediatric radiologist at the time of image interpretation. To determine if there was a correlation between gestational age and weight of a premature infant with their transverse chest diameter (rib to rib) on admission chest radiographs. This retrospective study was approved by the institutional review board, which waived informed consent. The maximum transverse chest diameter outer rib to outer rib was measured on admission portable chest radiographs of 464 patients admitted to the neonatal intensive care unit (NICU) during the 2010 calendar year. Regression analysis was used to investigate the association between chest diameter and gestational age/birth weight. Quadratic term of chest diameter was used in the regression model. Chest diameter was statistically significantly associated with both gestational age (P < 0.0001) and birth weight (P < 0.0001). An infant's gestational age and birth weight can be reliably estimated by comparing a simple measurement of the transverse chest diameter on digital chest radiograph with the tables and graphs in our study. (orig.)

  5. Screening for chest disease in college students: policies of student health services regarding the use of routine screening chest radiographs and tuberculin skin tests

    Energy Technology Data Exchange (ETDEWEB)

    Fager, S.S.; Slap, G.B.; Kitz, D.S.; Eisenberg, J.M.

    1984-02-01

    A survey of college health services was conducted to determine their policies regarding the use of screening chest radiographs and tuberculin skin tests. Pre-enrollment chest radiographs are prescribed for all incoming students by 24% of the 531 respondents and for health professions students, foreign students, and intercollegiate athletes only by an additional 20%, 19%, and 6%, respectively. Periodic chest radiography is conducted for all students by 7% of the respondents and for health professions students, foreign students, and intercollegiate athletes only by an additional 22%, 16%, and 8%, respectively. Pre-enrollment tuberculin skin tests are prescribed for all incoming students by 52% of the respondents and for health professions students, foreign students, and intercollegiate athletes only by an additional 48%, 29%, and 9%, respectively. Periodic tuberculin skin testing is conducted for all students by 27% of the respondents and for health professions students, foreign students, and intercollegiate athletes only by an additional 48%, 23%, and 16%, respectively. It is estimated from these data that 723,000 incoming students in the United States received screening chest radiographs in 1979 with estimated charges totaling between $7 million and $27 million. There may be 0.05 to 0.33 induced cases of lung cancer, leukemia, thyroid cancer, and female breast cancer over a 20-year period among this group of students exposed to ionizing radiation.

  6. Evaluation of the usefulness of modified biological fingerprints in chest radiographs for patient recognition and identification.

    Science.gov (United States)

    Shimizu, Yoichiro; Matsunobu, Yusuke; Morishita, Junji

    2016-07-01

    We have been developing an image-searching method to identify misfiled images in a PACS server. Developing new biological fingerprints (BFs) that would reduce the influence of differences in positioning and breathing phases to improve the performance of recognition is desirable. In our previous studies, the whole lung field (WLF) that included the shadows of the body and lungs was affected by differences in positioning and/or breathing phases. In this study, we showed the usefulness of a circumscribed lung with a rectangular region of interest and the upper half of a chest radiograph as modified BFs. We used 200 images as hypothetically misfiled images. The cross-correlation identifies the resemblance between the BFs in the misfiled images and the corresponding BFs in the database images. The modified BFs indicated better results than did WLF in a receiver operating characteristic analysis; therefore, they could be used as identifiers for patient recognition and identification.

  7. Cavity contour segmentation in chest radiographs using supervised learning and dynamic programming

    Energy Technology Data Exchange (ETDEWEB)

    Maduskar, Pragnya, E-mail: pragnya.maduskar@radboudumc.nl; Hogeweg, Laurens; Sánchez, Clara I.; Ginneken, Bram van [Diagnostic Image Analysis Group, Radboud University Medical Center, Nijmegen, 6525 GA (Netherlands); Jong, Pim A. de [Department of Radiology, University Medical Center Utrecht, 3584 CX (Netherlands); Peters-Bax, Liesbeth [Department of Radiology, Radboud University Medical Center, Nijmegen, 6525 GA (Netherlands); Dawson, Rodney [University of Cape Town Lung Institute, Cape Town 7700 (South Africa); Ayles, Helen [Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT (United Kingdom)

    2014-07-15

    Purpose: Efficacy of tuberculosis (TB) treatment is often monitored using chest radiography. Monitoring size of cavities in pulmonary tuberculosis is important as the size predicts severity of the disease and its persistence under therapy predicts relapse. The authors present a method for automatic cavity segmentation in chest radiographs. Methods: A two stage method is proposed to segment the cavity borders, given a user defined seed point close to the center of the cavity. First, a supervised learning approach is employed to train a pixel classifier using texture and radial features to identify the border pixels of the cavity. A likelihood value of belonging to the cavity border is assigned to each pixel by the classifier. The authors experimented with four different classifiers:k-nearest neighbor (kNN), linear discriminant analysis (LDA), GentleBoost (GB), and random forest (RF). Next, the constructed likelihood map was used as an input cost image in the polar transformed image space for dynamic programming to trace the optimal maximum cost path. This constructed path corresponds to the segmented cavity contour in image space. Results: The method was evaluated on 100 chest radiographs (CXRs) containing 126 cavities. The reference segmentation was manually delineated by an experienced chest radiologist. An independent observer (a chest radiologist) also delineated all cavities to estimate interobserver variability. Jaccard overlap measure Ω was computed between the reference segmentation and the automatic segmentation; and between the reference segmentation and the independent observer's segmentation for all cavities. A median overlap Ω of 0.81 (0.76 ± 0.16), and 0.85 (0.82 ± 0.11) was achieved between the reference segmentation and the automatic segmentation, and between the segmentations by the two radiologists, respectively. The best reported mean contour distance and Hausdorff distance between the reference and the automatic segmentation were

  8. The presence of radiological features on chest radiographs: How well do clinicians agree?

    Energy Technology Data Exchange (ETDEWEB)

    Edwards, M. [Department of Child Health, School of Medicine, Cardiff University (United Kingdom); Lawson, Z. [Department of Child Health, School of Medicine, Cardiff University (United Kingdom); Department of Primary Care and Public Health, School of Medicine, Cardiff University (United Kingdom); Morris, S.; Evans, A.; Harrison, S.; Isaac, R. [Department of Paediatric Radiology, University Hospital of Wales, Cardiff (United Kingdom); Crocker, J. [Department of Primary Care and Public Health, School of Medicine, Cardiff University (United Kingdom); Powell, C., E-mail: powellc7@cardiff.ac.uk [Department of Child Health, School of Medicine, Cardiff University (United Kingdom)

    2012-07-15

    Aim: To compare levels of agreement amongst paediatric clinicians with those amongst consultant paediatric radiologists when interpreting chest radiographs (CXRs). Materials and methods: Four paediatric radiologists used picture archiving and communication system (PACS) workstations to evaluate the presence of five radiological features of infection, independently in each of 30 CXRs. The radiographs were obtained over 1 year (2008) from children with fever and signs of respiratory distress, aged 6 months to <16 years. The same CXRs were interpreted a second time by the paediatric radiologists and by 21 clinicians with varying experience levels, using the Web 1000 viewing system and a projector. Intra- and interobserver agreement within groups, split by grade and specialty, were analysed using free-marginal multi-rater kappa. Results: Normal CXRs were identified consistently amongst all 25 participants. The four paediatric radiologists showed high levels of intraobserver agreement between methods (kappa scores between 0.53 and 1.00) and interobserver agreement for each method (kappa scores between 0.67 and 0.96 for PACS assessment). The 21 clinicians showed varying levels of agreement from 0.21 to 0.89. Conclusion: Paediatric radiologists showed high levels of agreement for all features. In general, the clinicians had lower levels of agreement than the radiologists. This study highlights the need for improved training in interpreting CXRs for clinicians and the timely reporting of CXRs by radiologists to allow appropriate patient management.

  9. New methods for using computer-aided detection information for the detection of lung nodules on chest radiographs

    NARCIS (Netherlands)

    Schalekamp, S.; Ginneken, B. van; Heggelman, B.; Imhof-Tas, M.W.; Somers, I.; Brink, M.; Spee, M.; Schaefer-Prokop, C.M.; Karssemeijer, N.

    2014-01-01

    Objective: To investigate two new methods of using computer-aided detection (CAD) system information for the detection of lung nodules on chest radiographs. We evaluated an interactive CAD application and an independent combination of radiologists and CAD scores. Methods: 300 posteroanterior and lat

  10. Basal cell naevus syndrome - radiographic findings in the skull

    Energy Technology Data Exchange (ETDEWEB)

    Stoll, P.; Dueker, J.; Weingart, D.

    1986-09-01

    Besides uni- and multiocular jaw cysts the Gorlin Goltz syndrome shows other characteristic radiographic findings which help to ensure diagnosis. These are particularly calcification of the falx cerebri and a so called ''bridging'' between processus clinoideus anterior and posterior of the sella turcica. The importance of early diagnosis is stressed.

  11. Catheter detection and classification on chest radiographs: an automated prototype computer-aided detection (CAD) system for radiologists

    Science.gov (United States)

    Ramakrishna, Bharath; Brown, Matthew; Goldin, Jonathan; Cagnon, Chris; Enzmann, Dieter

    2011-03-01

    Chest radiographs are the quickest and safest method to check placement of man-made medical devices placed in the body like catheters, stents and pacemakers etc out of which catheters are the most commonly used devices. The two most often used catheters especially in the ICU are the Endotracheal (ET) tube used to maintain patient's airway and the Nasogastric (NG) tube used to feed and administer drugs. Tertiary ICU's typically generate over 250 chest radiographs per day to confirm tube placement. Incorrect tube placements can cause serious complications and can even be fatal. The task of identifying these tubes on chest radiographs is difficult for radiologists and ICU personnel given the high volume of cases. This motivates the need for an automatic detection system to aid radiologists in processing these critical cases in a timely fashion while maintaining patient safety. To-date there has been very little research in this area. This paper develops a new fully automatic prototype computer-aided detection (CAD) system for detection and classification of catheters on chest radiographs using a combination of template matching, morphological processing and region growing. The preliminary evaluation was carried out on 25 cases. The prototype CAD system was able to detect ET and NG tubes with sensitivities of 73.7% and 76.5% respectively and with specificities of 91.3% and 84.0% respectively. The results from the prototype system show that it is feasible to automatically detect both catheters on chest radiographs, with the potential to significantly speed the delivery of imaging services while maintaining high accuracy.

  12. Morphometric Comparison of Clavicle Outlines from 3D Bone Scans and 2D Chest Radiographs: A Short-listing Tool to Assist Radiographic Identification of Human Skeletons

    Energy Technology Data Exchange (ETDEWEB)

    Stephan, Carl N.; Amidan, Brett G.; Trease, Harold E.; Guyomarch, Pierre; Pulsipher, Trenton C.; Byrd, John E.

    2014-03-01

    This paper describes a computerized clavicle identification system, primarily designed to resolve the identities of unaccounted for US soldiers who fought in the Korean War. Elliptical Fourier analysis is used to quantify the clavicle outline shape from skeletons and postero-anterior antemortem chest radiographs to rank individuals in terms of metric distance. Similar to leading fingerprint identification systems, shortlists of the top matching candidates are extracted for subsequent human visual assessment. Two independent tests of the computerized system using 17 field-recovered skeletons and 409 chest radiographs demonstrate that true positive matches are captured within the top 5% of the sample 75% of the time. These results are outstanding given the eroded state of some field-recovered skeletons and the faintness of the 1950’s photoflurographs. These methods enhance the capability to resolve several hundred cold cases for which little circumstantial information exists and current DNA and dental record technologies cannot be applied.

  13. Laryngotracheobronchial papillomatosis: findings on computed tomography scans of the chest

    Energy Technology Data Exchange (ETDEWEB)

    Marchiori, Edson [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Dept. de Radiologia; Araujo Neto, Cesar de [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Radiologia; Meirelles, Gustavo Souza Portes [Universidade Federal de Sao Paulo (UNIFESP-EPM), SP (Brazil); Irion, Klaus Loureiro [The Royal Liverpool University Hospital, Liverpool (United Kingdom); Zanetti, Glaucia [Faculdade de Medicina de Petropolis (FMP), RJ (Brazil); Missrie, Israel [Universidade Federal de Sao Paulo (UNIFESP-EPM), SP (Brazil). Dept. de Diagnostico por Imagem; Sato, Juliana [Universidade Federal de Sao Paulo (UNIFESP-EPM), SP (Brazil). Dept. de Otorrinolaringologia e Cirurgia de Cabeca e Pescoco

    2008-12-15

    Objectives: To present the findings of computed tomography (CT) scans of the chest in patients with laryngotracheobronchial papillomatosis. Methods: We retrospectively analyzed CT scans of eight patients, five males and three females, ranging from 5 to 18 years of age with a mean age of 10.5 years. Images were independently reviewed by two radiologists. In discrepant cases, a consensus was reached. Results: The most common CT findings were intratracheal polypoid lesions and pulmonary nodules, many of which were cavitated. Conclusions: In patients with laryngotracheobronchial papillomatosis, the most common tomographic finding was the combination of intratracheal polypoid lesions and multiple pulmonary nodules, many of which were cavitated. (author)

  14. Acute neuropathic joint in diabetic foot: Plain radiographic findings

    Energy Technology Data Exchange (ETDEWEB)

    Yoon, Dae Young; Kang, Heung Sik; Sim, Jung Suk; Yoon, Yong Kyu; Kim, Chu Wan [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    1994-05-15

    To determine the plain film findings of acute neuropathic joint in diabetic foot. Acute neuropathic joint in diabetic foot was considered when fragmentation of the articular ends of bone and subluxation of the affected joint developed within eight weeks after clinical onset of diabetic gangrene. Eight toes of six diabetics were satisfactory to our criteria. We analyzed plain radiographic findings of the affected joint and soft tissue, interval changes in followed-up radiographs, and deformities after healing. The time interval between clinical onset of gangrene and bone destruction ranges from 2 weeks to 4 weeks(mean 2.6 weeks). Plane radiographs showed fragmentation of the articular ends, subluxation, and soft tissue swelling of the metatarsophalangeal joint or interphalangeal joint. The significant feature of these patients was rapid progression of the lesions. Clinically, all patients had diabetic gangrene in affected toes, however, there was no evidence of osteomyelitis in our series. Amputation was done in 2 cases, and lesions in 3 of the remaining 4 cases were repaired spontaneously with regression of gangrene, leaving radiological residua such as pointed-end, tapered-end, and ball and socket deformity. Rapid disorganisation of the joint with associated evidence of soft tissue gangrene in plain radiograph is believed to be valuable for the diagnosis of diabetic osteoarthropathy.

  15. Radiographic findings in restrained hip joints associated with ACL rupture.

    Science.gov (United States)

    Ellera Gomes, João L; Palma, Humberto Moreira; Becker, Ricardo

    2010-11-01

    Although decreased hip range of motion has been detected in many soccer players with noncontact anterior cruciate ligament (ACL), it is not clear whether it is associated with bone spurs, capsular soft tissue stiffness or both. Our aim was to investigate abnormal radiographic findings in soccer players with limited hip range of motion and noncontact ACL injury. Fifty consecutive male soccer players with restricted hip range of motion and noncontact ACL injury were subjected to radiographic examination to identify bone changes that could be associated with decreased hip range of motion. Of 50 patients, 56% revealed abnormal radiographic findings: pericapsular calcifications or acetabular rim osteophytes (24%), femoral neck deformity (10%), femoral neck and acetabular rim disorders (18%), neck groove caused by impingement (4%). Radiographic evaluation of those individuals showed a high number of bone abnormalities around the hip joint. This was considered to be an important finding to guide a decision-making process between three different approaches: changing the type of sports practiced, undergoing a more restrictive surgery (such as a double-bundle intra-articular reconstruction or an intra plus extra technique) or the onset of a hip-stretching program in addition to the conventional ACL rehabilitation protocol. In this last option, ACL-operated patients without radiographic hip abnormalities may have better outcomes for their decreased hip range of motion when submitted to a stretching program targeting the prevention of rotational overload on the reconstructed intra-articular grafts. The decision-making process concerning soccer players with ACL ruptures should take into consideration the amount of motion-limiting abnormalities around the hip joint.

  16. Radiological findings in megaesophagus secondary to Chagas disease: chest X-ray and esophagogram*

    Science.gov (United States)

    Abud, Thiago Giansante; Abud, Lucas Giansante; Vilar, Vanessa Sales; Szejnfeld, Denis; Reibscheid, Samuel

    2016-01-01

    Objective To identify and classify the radiographic patterns of megaesophagus in Chagas disease, as seen on esophagograms and chest X-rays. Materials and Methods This was a prospective study of 35 patients diagnosed with esophageal disease via manometry. The changes found on esophagograms were stratified according to Rezende's classification, divided into four categories (grades I through IV) determined by the degree of dilatation and impairement of esophageal motility. We subsequently correlated that ranking with the chest X-ray findings: gastric air bubble; air-fluid level; and mediastinal widening. Results Among the 35 patients, the esophageal disease was classified as grade I in 9 (25.7%), grade II in 3 (8.6%), grade III in 19 (54.3%), and grade IV in 4 (11.4%). None of the patients with grade I esophageal disease showed changes on chest X-rays. In two of the three patients with grade II disease, there was no gastric air-bubble, although there were no other findings in any of the grade II patients. Of the 19 patients with grade III disease, 15 had abnormal findings on X-rays. All four patients with grade IV disease showed abnormalities. Conclusion The use of Rezende's classification is feasible, encompassing findings ranging from the subtle changes that characterize the initial phases of esophageal disease to the complete akinesia seen in dolicomegaesophagus. Chest X-ray findings are more common in patients with advanced stages of the disease and indicate the degree of esophageal involvement in Chagas disease. PMID:28100930

  17. Support vector machine model for diagnosing pneumoconiosis based on wavelet texture features of digital chest radiographs.

    Science.gov (United States)

    Zhu, Biyun; Chen, Hui; Chen, Budong; Xu, Yan; Zhang, Kuan

    2014-02-01

    This study aims to explore the classification ability of decision trees (DTs) and support vector machines (SVMs) to discriminate between the digital chest radiographs (DRs) of pneumoconiosis patients and control subjects. Twenty-eight wavelet-based energy texture features were calculated at the lung fields on DRs of 85 healthy controls and 40 patients with stage I and stage II pneumoconiosis. DTs with algorithm C5.0 and SVMs with four different kernels were trained by samples with two combinations of the texture features to classify a DR as of a healthy subject or of a patient with pneumoconiosis. All of the models were developed with fivefold cross-validation, and the final performances of each model were compared by the area under receiver operating characteristic (ROC) curve. For both SVM (with a radial basis function kernel) and DT (with algorithm C5.0), areas under ROC curves (AUCs) were 0.94 ± 0.02 and 0.86 ± 0.04 (P = 0.02) when using the full feature set and 0.95 ± 0.02 and 0.88 ± 0.04 (P = 0.05) when using the selected feature set, respectively. When built on the selected texture features, the SVM with a polynomial kernel showed a higher diagnostic performance with an AUC value of 0.97 ± 0.02 than SVMs with a linear kernel, a radial basis function kernel and a sigmoid kernel with AUC values of 0.96 ± 0.02 (P = 0.37), 0.95 ± 0.02 (P = 0.24), and 0.90 ± 0.03 (P = 0.01), respectively. The SVM model with a polynomial kernel built on the selected feature set showed the highest diagnostic performance among all tested models when using either all the wavelet texture features or the selected ones. The model has a good potential in diagnosing pneumoconiosis based on digital chest radiographs.

  18. The prevalence of chondrocalcinosis (CC) of the acromioclavicular (AC) joint on chest radiographs and correlation with calcium pyrophosphate dihydrate (CPPD) crystal deposition disease.

    Science.gov (United States)

    Parperis, Konstantinos; Carrera, Guillermo; Baynes, Keith; Mautz, Alan; Dubois, Melissa; Cerniglia, Ross; Ryan, Lawrence M

    2013-09-01

    Digital imaging combined with picture archiving and communication system (PACS) access allows detailed image retrieval and magnification. Calcium pyrophosphate dihydrate (CPPD) crystals preferentially deposit in fibrocartilages, the cartilage of the acromioclavicular (AC) joint being one such structure. We sought to determine if examination of the AC joints on magnified PACS imaging of chest films would be useful in identifying chondrocalcinosis (CC). Retrospective radiographic readings and chart reviews involving 1,920 patients aged 50 or more who had routine outpatient chest radiographs over a 4-month period were performed. Knee radiographs were available for comparison in 489 patients. Medical records were reviewed to abstract demographics, chest film reports, and diagnoses. AC joint CC was identified in 1.1 % (21/1,920) of consecutive chest films. Patients with AC joint CC were 75 years of age versus 65.4 in those without CC (p AC joint CC, and of these, five also had knee CC (83 %). Of the 483 without AC joint CC, 62 (12 %) had knee CC (p = 0.002). Patients with AC joint CC were more likely to have a recorded history of CPPD crystal deposition disease than those without AC joint CC (14 versus 1 %, p = 0.0017). The prevalence of AC joint CC increases with age and is associated with knee CC. A finding of AC joint CC should heighten suspicion of pseudogout or secondary osteoarthritis in appropriate clinical settings and, in a young patient, should alert the clinician to the possibility of an associated metabolic condition.

  19. Application of phase congruency for discriminating some lung diseases using chest radiograph.

    Science.gov (United States)

    Rijal, Omar Mohd; Ebrahimian, Hossein; Noor, Norliza Mohd; Hussin, Amran; Yunus, Ashari; Mahayiddin, Aziah Ahmad

    2015-01-01

    A novel procedure using phase congruency is proposed for discriminating some lung disease using chest radiograph. Phase congruency provides information about transitions between adjacent pixels. Abrupt changes of phase congruency values between pixels may suggest a possible boundary or another feature that may be used for discrimination. This property of phase congruency may have potential for deciding between disease present and disease absent where the regions of infection on the images have no obvious shape, size, or configuration. Five texture measures calculated from phase congruency and Gabor were shown to be normally distributed. This gave good indicators of discrimination errors in the form of the probability of Type I Error (δ) and the probability of Type II Error (β). However, since 1 -  δ is the true positive fraction (TPF) and β is the false positive fraction (FPF), an ROC analysis was used to decide on the choice of texture measures. Given that features are normally distributed, for the discrimination between disease present and disease absent, energy, contrast, and homogeneity from phase congruency gave better results compared to those using Gabor. Similarly, for the more difficult problem of discriminating lobar pneumonia and lung cancer, entropy and homogeneity from phase congruency gave better results relative to Gabor.

  20. Spatially varying scatter compensation for chest radiographs using a hybrid Madaline artificial neural network

    Science.gov (United States)

    Lo, Joseph Y.; Baydush, Alan H.; Floyd, Carey E., Jr.

    1994-05-01

    We developed a hybrid artificial neural network for scatter compensation in digital portable chest radiographs. The network inputs an image region of interest (ROI), and outputs the scatter estimate at the ROI's center. We segmented each image into four regions by relative detected exposure, then trained a separate Adaline (adaptive linear element) or adaptive filter for each region. We produced a spatially varying hybrid Madaline (mulitple Adaline) by combining outputs from weight matrices of different sizes trained for different durations. The network was trained with 20 patient or 1280 examples, then evaluated with another 5 patients or 320 examples. Scatter estimation errors were not very different, ranging from the Adaline's 6.9 percent to the hybrid Madaline's 5.5 percent. Primary errors (more relevant to quantitative radiography techniques like dual energy imaging) were 43 percent for the Adaline, reduced to 27 percent for the Madaline, and further reduced to 19 percent for the hybrid Madaline. The trained weight matrices, which act like convolution filters, resembled the shape and magnitude of scatter point spread functions. All networks outperformed conventional convolution-subraction techniques using analytical kernels. With its spatially varying neural network model, the hybrid Madaline provided the most accurate and robust estimation of scatter and primary exposures.

  1. Application of Phase Congruency for Discriminating Some Lung Diseases Using Chest Radiograph

    Directory of Open Access Journals (Sweden)

    Omar Mohd Rijal

    2015-01-01

    Full Text Available A novel procedure using phase congruency is proposed for discriminating some lung disease using chest radiograph. Phase congruency provides information about transitions between adjacent pixels. Abrupt changes of phase congruency values between pixels may suggest a possible boundary or another feature that may be used for discrimination. This property of phase congruency may have potential for deciding between disease present and disease absent where the regions of infection on the images have no obvious shape, size, or configuration. Five texture measures calculated from phase congruency and Gabor were shown to be normally distributed. This gave good indicators of discrimination errors in the form of the probability of Type I Error (δ and the probability of Type II Error (β. However, since 1 −  δ is the true positive fraction (TPF and β is the false positive fraction (FPF, an ROC analysis was used to decide on the choice of texture measures. Given that features are normally distributed, for the discrimination between disease present and disease absent, energy, contrast, and homogeneity from phase congruency gave better results compared to those using Gabor. Similarly, for the more difficult problem of discriminating lobar pneumonia and lung cancer, entropy and homogeneity from phase congruency gave better results relative to Gabor.

  2. MRI reporting by radiographers: Findings of an accredited postgraduate programme

    Energy Technology Data Exchange (ETDEWEB)

    Piper, Keith [Allied Heath Professions Department, Canterbury Christ Church University, North Holmes Road, Canterbury, Kent CT1 1QU (United Kingdom)], E-mail: keith.piper@canterbury.ac.uk; Buscall, Kaie [Allied Heath Professions Department, Canterbury Christ Church University, North Holmes Road, Canterbury, Kent CT1 1QU (United Kingdom); Thomas, Nigel [X-Ray Department, Trafford General Hospital, Manchester M41 5SL (United Kingdom)

    2010-05-15

    Aim: To analyse the objective structured examination (OSE) results of the first three cohorts of radiographers (n = 39) who completed an accredited postgraduate certificate (PgC) programme in reporting of general magnetic resonance imaging (MRI) investigations and to compare the agreement rates with those demonstrated for a small group of consultant radiologists. Method: Forty MRI investigations were used in the OSE which included the following anatomical areas and abnormal appearances: knee; meniscal/ligament injuries, bone bruises, effusions and osteochondral defects; lumbar spine: intervertebral disc morphology, vertebral collapse, tumours (bone and soft tissue), spinal stenosis and/or nerve root involvement; internal auditory meati (IAM): acoustic neuroma. Incidental findings included maxillary polyp, arachnoid cyst, renal cyst, hydroureter, pleural effusion and metastases (adrenal, lung, perirenal and/or thoracic spine). Sensitivity, specificity and total percentage agreement rates were calculated for all radiographers (n = 39) using all reports (n = 1560). A small representative subgroup of reports (n = 27) was compared to the three consultant radiologists' reports which were produced when constructing the OSE. Kappa values were estimated to measure agreement in four groups: consultant radiologists only; radiographers and each of the consultant radiologists independently. Results: The sensitivity, specificity and agreement rates for the three cohorts (combined) of radiographers were 99.0%, 99.0% and 89.2%, respectively. For the majority (5/9) of anatomical areas and/or pathological categories no significant differences (p < 0.05) were found between the mean Kappa scores (K = 0.47-0.76) for different groups of observers, whether radiographers were included in the group analysis or not. Where differences were apparent, this was in cases (4/9) where the variation was either not greater than found between radiologists and/or of no clinical significance

  3. Bone and joint changes following electrical burn: plain radiographic findings

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Uk Jung; Lee, Eil Seong; Shim, Ya Seong; Kim, Seon Bok; Lee, Shin Ho; Jung, Hae Kyoung; Hwang, Dae Hyun; Kang, Ik Won [Hallym Univ. College of Medicine, Seoul (Korea, Republic of)

    1998-10-01

    To evaluate the plain radiographic findings of bone and joint changes following electrical burn. This study involved 19 patients with 27 bone and joints regions which had suffered electrical injury. The most common input and output sites were, respectively, the hand(7/14) and foot (6/10). Three other sites were involved. Four cases involved osteomyelitis, and in four, amputation was performed. We observed bone and joint changes, changes following osteomyelitis and changes in the amputation stump. We analyzed the difference between input and output changes, and when this was interesting, the average time of onset was assessed. In bone and joint changes following electrical burn, the most frequent radiographic finding was joint contracture(n=3D16). Other findings included osteolysis(n=3D8), articular abnormalites (n=3D6), periostitis(n=3D5), fracture(n=3D5), acro-osteolysis(n=3D2), and heterotopic bone formation(n=3D2). In cases involving osteomyelitis(n=3D4), aggravation of underlying bone changes was noted. In electrical burn, various changes were noted in bone and joints, and input injury was more severe than that of output.=20.

  4. Inter-observer variation in the interpretation of chest radiographs for pneumonia in community-acquired lower respiratory tract infections

    Energy Technology Data Exchange (ETDEWEB)

    Hopstaken, R.M. E-mail: rogier.hopstaken@hag.unimaas.nl; Witbraad, T.; Engelshoven, J.M.A. van; Dinant, G.J

    2004-08-01

    AIM: To assess inter-observer variation in the interpretation of chest radiographs of individuals with pneumonia versus those without pneumonia. MATERIALS AND METHODS: Chest radiographs of out-patients with a lower respiratory tract infection (LRTI) were assessed for the presence of infiltrates by radiologists from three local hospitals and were reassessed by one university hospital radiologist. Various measures of inter-observer agreement were calculated. RESULTS: The observed proportional agreement was 218 in 243 patients (89.7%). Kappa was 0.53 (moderate agreement) with a 95% confidence interval of 0.37 to 0.69. The observed positive agreement (59%) was much lower than for negative agreement (94%). Kappa was considerably lower, if chronic obstructive pulmonary disease was present ({kappa}=0.20) or Streptococcus pneumoniae ({kappa}=-0.29) was the infective agent. CONCLUSION: The overall inter-observer agreement adjusted for chance was moderate. Inter-observer agreement in cases with pneumonia was much worse than the agreement in negative (i.e. non-pneumonia) cases. A general practitioner's selection of patients with a higher chance of having pneumonia for chest radiography would thus not improve the observer agreement.

  5. Using Standardized Interpretation of Chest Radiographs to Identify Adults with Bacterial Pneumonia--Guatemala, 2007-2012.

    Directory of Open Access Journals (Sweden)

    Jonathan M Wortham

    Full Text Available Bacterial pneumonia is a leading cause of illness and death worldwide, but quantifying its burden is difficult due to insensitive diagnostics. Although World Health Organization (WHO protocol standardizes pediatric chest radiograph (CXR interpretation for epidemiologic studies of bacterial pneumonia, its validity in adults is unknown.Patients (age ≥ 15 years admitted with respiratory infections to two Guatemalan hospitals between November 2007 and March 2012 had urine and nasopharyngeal/oropharyngeal (NP/OP swabs collected; blood cultures and CXR were also performed at physician clinical discretion. 'Any bacterial infection' was defined as a positive urine pneumococcal antigen test, isolation of a bacterial pneumonia pathogen from blood culture, or detection of an atypical bacterial pathogen by polymerase chain reaction (PCR of nasopharyngeal/oropharyngeal (NP/OP specimens. 'Viral infection' was defined as detection of viral pathogens by PCR of NP/OP specimens. CXRs were interpreted according to the WHO protocol as having 'endpoint consolidation', 'other infiltrate', or 'normal' findings. We examined associations between bacterial and viral infections and endpoint consolidation.Urine antigen and/or blood culture results were available for 721 patients with CXR interpretations; of these, 385 (53% had endpoint consolidation and 253 (35% had other infiltrate. Any bacterial infection was detected in 119 (17% patients, including 106 (89% pneumococcal infections. Any bacterial infection (Diagnostic Odds Ratio [DOR] = 2.9; 95% confidence Interval (CI: 1.3-7.9 and pneumococcal infection (DOR = 3.4; 95% CI: 1.5-10.0 were associated with 'endpoint consolidation', but not 'other infiltrate' (DOR = 1.7; 95% CI: 0.7-4.9, and 1.7; 95% CI: 0.7-4.9 respectively. Viral infection was not significantly associated with 'endpoint consolidation', 'other infiltrate,' or 'normal' findings.'Endpoint consolidation' was associated with 'any bacterial infection

  6. Radiographic findings in late-presenting congenital diaphragmatic hernia: helpful imaging findings

    Energy Technology Data Exchange (ETDEWEB)

    Muzzafar, Sofia; Swischuk, Leonard E.; Jadhav, Siddharth P. [University of Texas Medical Branch, Department of Pediatric Radiology, Galveston, TX (United States)

    2012-03-15

    Imaging findings in delayed presentation of congenital diaphragmatic hernia can be confusing and misleading, resulting in a delay in diagnosis. To evaluate the often puzzling plain film findings of late-presenting CDH in an effort to determine whether any of the findings could be helpful in arriving at an early diagnosis. We reviewed and documented the plain film findings and clinical data in eight patients seen during the last 20 years with late-presenting CDH. IRB exempt status was obtained in this study. There were five boys and three girls. The age range was 4 months to 12 years with a mean of 2.4 years. Five children presented with acute respiratory problems while three presented with acute abdominal pain. Two children presented with both respiratory and abdominal findings and one also presented with hematemesis. Two children had radiographic findings that were not difficult to analyze while the remaining six had findings that posed initial diagnostic problems. Although not common, late-presenting CDH can result in confusing plain film radiographic findings and a delay in diagnosis. We found that the most important finding in analyzing these radiographs is in evaluating the location and position of the gastric bubble with the more common left-side hernias. (orig.)

  7. Cardiothoracic ratio on chest radiograph in pediatric heart disease: How does it correlate with heart volumes at magnetic resonance imaging?

    Energy Technology Data Exchange (ETDEWEB)

    Grotenhuis, Heynric B. [The University of Toronto, Division of Cardiology, Department of Paediatrics, The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto (Canada); Zhou, Cheng; Isaac, Kathryn V. [The University of Toronto, Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto (Canada); Tomlinson, George [University of Toronto, Department of Medicine, Toronto General Hospital and Mt. Sinai Hospital, Toronto (Canada); Seed, Mike; Grosse-Wortmann, Lars; Yoo, Shi-Joon [The University of Toronto, Division of Cardiology, Department of Paediatrics, The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto (Canada); The University of Toronto, Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto (Canada)

    2015-10-15

    The cardiothoracic ratio by chest radiograph is widely used as a marker of cardiac size. The purpose of this study is to correlate cardiothoracic ratio and cardiac volumes as measured by cardiovascular magnetic resonance (MR) in common structural and myopathic heart disease with increased cardiac size due to volume overload or hypertrophy. A retrospective single center study was performed in all patients between 2007 and 2013 with repaired tetralogy of Fallot (TOF), aortic regurgitation, isolated left-to-right shunt and hypertrophic cardiomyopathy (HCM) who underwent cardiovascular MR and chest radiograph within 6 months of each other. Cardiothoracic ratios by chest radiograph (frontal and lateral) were compared to cardiac volumes (indexed for body surface area) by cardiovascular MR. One hundred twenty-seven patients (mean age: 11.2 ± 5.5 years) were included in this study (76 with TOF, 23 with isolated left-to-right shunt, 16 with aortic regurgitation and 12 with HCM). Frontal cardiothoracic ratio of all groups correlated with indexed right ventricular (RV) end-diastolic volume (EDVI) (r = 0.40, P < 0.01) and indexed total heart volume (THVI) (r = 0.27, P < 0.01). In TOF patients, frontal cardiothoracic ratio correlated with RVEDVI (r = 0.34, P < 0.01; coefficient of variation = 27.6%), indexed RV end-systolic volume (ESVI) (r = 0.44, P < 0.01; coefficient of variation = 33.3%) and THVI (r = 0.35, P < 0.01; coefficient of variation = 19.6%), although RV volumes and THVI showed widespread variation given the high coefficients of variation. In patients with aortic regurgitation, frontal cardiothoracic ratio correlated with left ventricular (LV) EDVI (r = 0.50, P = 0.047), but not with THVI and aortic regurgitant fraction, and widespread variation for LV EDVI (coefficient of variation = 19.2%), LV ESVI (coefficient of variation = 32.5%) and THVI (coefficient of variation = 13.6%) was also observed. Frontal cardiothoracic ratio was not correlated with cardiac volumes

  8. Retropharyngeal Tendinitis: Radiographic and Magnetic Resonance Imaging Findings

    Energy Technology Data Exchange (ETDEWEB)

    Gelineck, J.; Salomonsen, M.; Hviid, C. [Aarhus Univ. Hospital (Denmark). Dept. of Radiology

    2006-10-15

    Purpose: To describe the magnetic resonance imaging (MRI) findings in retropharyngeal tendinitis. Material and methods: Within 1 year, four patients presenting with symptoms of retropharyngeal tendinitis were examined by radiography and MRI. Results: On MRI and radiographs, all patients had characteristic soft-tissue swellings and calcifications related to the tendon of the longus colli muscle situated inferior to the anterior arc of C1. MRI showed well-defined edema, with high signal in the retropharyngeal tissue anterior to C1-C5 on short T1 inversion recovery (STIR) sequences, low signal on T1-weighted sequences, and low signal in the calcification on both sequences. In addition, three patients had high signal intensity changes on STIR sequences in the atlantoaxial joint situated posterior to the anterior arc of C1. Conclusion: MRI is a sensitive and accurate method in the diagnosis of retropharyngeal tendinitis. A new finding in this condition is an effusion or synovitis in the anterior atlantoaxial joint. MRI is a valuable tool in differentiating retropharyngeal tendinitis from other diagnoses such as retropharyngeal abscess, pyogenic spondylitis, and spondyloarthropathy.

  9. Chest radiographic features of lymphocytic interstitial pneumonitis in HIV-infected children

    Energy Technology Data Exchange (ETDEWEB)

    Pitcher, R.D., E-mail: pitcher@iafrica.co [Division of Paediatric Radiology, Red Cross War Memorial Children' s Hospital, Department of Radiation Medicine, University of Cape Town (South Africa); Beningfield, S.J. [Division of Radiology, New Groote Schuur Hospital and University of Cape Town (South Africa); Zar, H.J. [Department of Paediatric Pulmonology, Red Cross War Memorial Children' s Hospital, School of Child and Adolescent Health, University of Cape Town (South Africa)

    2010-02-15

    Aim: To review the radiological features of biopsy-proven lymphocytic interstitial pneumonitis (LIP) in human immunodeficiency virus (HIV)-infected children and establish whether these are based on systematic radiological analysis, and to investigate whether more specific radiological diagnostic criteria can be developed. Materials and methods: A Medline search of English-language articles on the radiological features of biopsy-proven LIP in HIV-infected children was conducted for the period 1982 to 2007 inclusive. Radiological findings were compared with the Centers for Disease Control and Prevention (CDC) criteria for a presumptive diagnosis of LIP. Results: Pulmonary pathology was recorded as 'diffuse' and 'bilateral' in 125 (97.6%) of 128 reported cases of LIP. Twenty-five different terms were used to describe the pulmonary parenchyma. In 96 (75%), the terminology was consistent with CDC diagnostic criteria. Radiological evolution was documented in 43 (33.5%). Persistent focal opacification superimposed on diffuse pulmonary nodularity was demonstrated in 10 (7.8%). The method of radiological evaluation was described in six (4.6%). In no instance was the terminology defined. Conclusion: The radiological features of LIP have not been systematically analysed. However, CDC criteria remain reliable, allowing diagnosis of at least 75% of cases. The sensitivity of these criteria may be increased by including cases with persistent focal pulmonary opacification superimposed on diffuse nodularity. Longitudinal studies utilizing standardized radiographic analysis are needed to elucidate the natural history of LIP.

  10. Comparison of gated radionuclide scans and chest radiographs. Assessment of left ventricular impairment in patients with coronary disease.

    Science.gov (United States)

    Bianco, J A; Reinke, D B; Makey, D G; Shafer, R B

    1980-03-01

    Diagnostic efficacy of gated cardiac blood pool imaging was studied in 41 consecutive patients with LV ejection fractions (LVEF) less than or equal to 0.50. Eighty percent of patients were receiving therapy for LV failure at the time of the study. All patients had documented coronary-artery disease (CAD). Chest x-ray films were interpreted blindly by a senior radiologist. Cardiothoracic ratio of less than or equal to 0.50 was recorded as normal. Radionuclide assessment of LV function contributes importantly to the diagnostic and screening value of chest x-ray films. Patients with coronary disease and clinical evidence of heart failure should have radioisotopic studies even if chest x-ray film findings are normal. In patients with coronary artery disease and enlarged LV on chest films, radionuclide study of left ventricular performance aids in defining LV impairment, and in the prognostication of subsequent clinical course.

  11. Using Standardized Interpretation of Chest Radiographs to Identify Adults with Bacterial Pneumonia—Guatemala, 2007–2012

    Science.gov (United States)

    Wortham, Jonathan M.; Gray, Jennifer; Verani, Jennifer; Contreras, Carmen Lucia; Bernart, Chris; Moscoso, Fabiola; Moir, Juan Carlos; Reyes Marroquin, Emma Lissette; Castellan, Rigoberto; Arvelo, Wences; Lindblade, Kim; McCracken, John P.

    2015-01-01

    Background Bacterial pneumonia is a leading cause of illness and death worldwide, but quantifying its burden is difficult due to insensitive diagnostics. Although World Health Organization (WHO) protocol standardizes pediatric chest radiograph (CXR) interpretation for epidemiologic studies of bacterial pneumonia, its validity in adults is unknown. Methods Patients (age ≥15 years) admitted with respiratory infections to two Guatemalan hospitals between November 2007 and March 2012 had urine and nasopharyngeal/oropharyngeal (NP/OP) swabs collected; blood cultures and CXR were also performed at physician clinical discretion. ‘Any bacterial infection’ was defined as a positive urine pneumococcal antigen test, isolation of a bacterial pneumonia pathogen from blood culture, or detection of an atypical bacterial pathogen by polymerase chain reaction (PCR) of nasopharyngeal/oropharyngeal (NP/OP) specimens. ‘Viral infection’ was defined as detection of viral pathogens by PCR of NP/OP specimens. CXRs were interpreted according to the WHO protocol as having ‘endpoint consolidation’, ‘other infiltrate’, or ‘normal’ findings. We examined associations between bacterial and viral infections and endpoint consolidation. Findings Urine antigen and/or blood culture results were available for 721 patients with CXR interpretations; of these, 385 (53%) had endpoint consolidation and 253 (35%) had other infiltrate. Any bacterial infection was detected in 119 (17%) patients, including 106 (89%) pneumococcal infections. Any bacterial infection (Diagnostic Odds Ratio [DOR] = 2.9; 95% confidence Interval (CI): 1.3–7.9) and pneumococcal infection (DOR = 3.4; 95% CI: 1.5–10.0) were associated with ‘endpoint consolidation’, but not ‘other infiltrate’ (DOR = 1.7; 95% CI: 0.7–4.9, and 1.7; 95% CI: 0.7–4.9 respectively). Viral infection was not significantly associated with ‘endpoint consolidation’, ‘other infiltrate,’ or ‘normal’ findings

  12. Cystic Fibrosis Chest X-Ray Findings: A Teaching Analog

    Science.gov (United States)

    2008-07-01

    methicilin-resistant S. aureus. In newborns , the TORCHES infections predominate: Toxoplasmosis, Rubella, CMV, Herpes, Syphilis, and others. The first...of alveolar filling resulting in increased density on radiographs. The five common “sources” of a consolidation are hemorrhage , exudates...exposure. Table 3: Differential Diagnosis for Air Bronchograms Consolidation Hemorrhage (Blood) Embolism Trauma, contusion Exudate (Pus

  13. A computer-aided diagnosis system to detect pathologies in temporal subtraction images of chest radiographs

    Science.gov (United States)

    Looper, Jared; Harrison, Melanie; Armato, Samuel G.

    2016-03-01

    Radiologists often compare sequential radiographs to identify areas of pathologic change; however, this process is prone to error, as human anatomy can obscure the regions of change, causing the radiologists to overlook pathology. Temporal subtraction (TS) images can provide enhanced visualization of regions of change in sequential radiographs and allow radiologists to better detect areas of change in radiographs. Not all areas of change shown in TS images, however, are actual pathology. The purpose of this study was to create a computer-aided diagnostic (CAD) system that identifies which regions of change are caused by pathology and which are caused by misregistration of the radiographs used to create the TS image. The dataset used in this study contained 120 images with 74 pathologic regions on 54 images outlined by an experienced radiologist. High and low ("light" and "dark") gray-level candidate regions were extracted from the images using gray-level thresholding. Then, sampling techniques were used to address the class imbalance problem between "true" and "false" candidate regions. Next, the datasets of light candidate regions, dark candidate regions, and the combined set of light and dark candidate regions were used as training and testing data for classifiers by using five-fold cross validation. Of the classifiers tested (support vector machines, discriminant analyses, logistic regression, and k-nearest neighbors), the support vector machine on the combined candidates using synthetic minority oversampling technique (SMOTE) performed best with an area under the receiver operating characteristic curve value of 0.85, a sensitivity of 85%, and a specificity of 84%.

  14. A parameterized logarithmic image processing method with Laplacian of Gaussian filtering for lung nodule enhancement in chest radiographs.

    Science.gov (United States)

    Chen, Sheng; Yao, Liping; Chen, Bao

    2016-11-01

    The enhancement of lung nodules in chest radiographs (CXRs) plays an important role in the manual as well as computer-aided detection (CADe) lung cancer. In this paper, we proposed a parameterized logarithmic image processing (PLIP) method combined with the Laplacian of a Gaussian (LoG) filter to enhance lung nodules in CXRs. We first applied several LoG filters with varying parameters to an original CXR to enhance the nodule-like structures as well as the edges in the image. We then applied the PLIP model, which can enhance lung nodule images with high contrast and was beneficial in extracting effective features for nodule detection in the CADe scheme. Our method combined the advantages of both the PLIP algorithm and the LoG algorithm, which can enhance lung nodules in chest radiographs with high contrast. To test our nodule enhancement method, we tested a CADe scheme, with a relatively high performance in nodule detection, using a publically available database containing 140 nodules in 140 CXRs enhanced through our nodule enhancement method. The CADe scheme attained a sensitivity of 81 and 70 % with an average of 5.0 frame rate (FP) and 2.0 FP, respectively, in a leave-one-out cross-validation test. By contrast, the CADe scheme based on the original image recorded a sensitivity of 77 and 63 % at 5.0 FP and 2.0 FP, respectively. We introduced the measurement of enhancement by entropy evaluation to objectively assess our method. Experimental results show that the proposed method obtains an effective enhancement of lung nodules in CXRs for both radiologists and CADe schemes.

  15. Study of fractal dimension in chest images using normal and interstitial lung disease cases

    Science.gov (United States)

    Tucker, Douglas M.; Correa, Jose L.; Souto, Miguel; Malagari, Katerina S.

    1993-09-01

    A quantitative computerized method which provides accurate discrimination between chest radiographs with positive findings of interstitial disease patterns and normal chest radiographs may increase the efficacy of radiologic screening of the chest and the utility of digital radiographic systems. This report is a comparison of fractal dimension measured in normal chest radiographs and in radiographs with abnormal lungs having reticular, nodular, reticulonodular and linear patterns of interstitial disease. Six regions of interest (ROI's) from each of 33 normal chest radiographs and 33 radiographs with positive findings of interstitial disease were studied. Results indicate that there is a statistically significant difference between the distribution of the fractal dimension in normal radiographs and radiographs where disease is present.

  16. Quality assurance: using the exposure index and the deviation index to monitor radiation exposure for portable chest radiographs in neonates

    Energy Technology Data Exchange (ETDEWEB)

    Cohen, Mervyn D. [Indiana University School of Medicine, Department of Radiology, Riley Children' s Hospital, Indianapolis, IN (United States); Riley Hospital for Children, Department of Radiology, Indianapolis, IN (United States); Cooper, Matt L.; Piersall, Kelly [Indiana University School of Medicine, Department of Radiology, Riley Children' s Hospital, Indianapolis, IN (United States); Apgar, Bruce K. [Agfa HealthCare Corporation, Greenville, SC (United States)

    2011-05-15

    Many methods are used to track patient exposure during acquisition of plain film radiographs. A uniform international standard would aid this process. To evaluate and describe a new, simple quality-assurance method for monitoring patient exposure. This method uses the ''exposure index'' and the ''deviation index,'' recently developed by the International Electrotechnical Commission (IEC) and American Association of Physicists in Medicine (AAPM). The deviation index measures variation from an ideal target exposure index value. Our objective was to determine whether the exposure index and the deviation index can be used to monitor and control exposure drift over time. Our Agfa workstation automatically keeps a record of the exposure index for every patient. The exposure index and deviation index were calculated on 1,884 consecutive neonatal chest images. Exposure of a neonatal chest phantom was performed as a control. Acquisition of the exposure index and calculation of the deviation index was easily achieved. The weekly mean exposure index of the phantom and the patients was stable and showed <10% change during the study, indicating no exposure drift during the study period. The exposure index is an excellent tool to monitor the consistency of patient exposures. It does not indicate the exposure value used, but is an index to track compliance with a pre-determined target exposure. (orig.)

  17. Chest wall, lung, and pleural space trauma.

    Science.gov (United States)

    Miller, Lisa A

    2006-03-01

    Chest radiographs frequently underestimate the severity and extent of chest trauma and, in some cases, fail to detect the presence of injury. CT is more sensitive than chest radiography in the detection of pulmonary, pleural, and osseous abnormalities in the patient who has chest trauma. With the advent of multidetector CT (MDCT), high-quality multiplanar reformations are obtained easily and add to the diagnostic capabilities of MDCT. This article reviews the radiographic and CT findings of chest wall, pleural, and pulmonary injuries that are seen in the patient who has experienced blunt thoracic trauma.

  18. Improving computer-aided diagnosis of interstitial disease in chest radiographs by combining one-class and two-class classifiers.

    NARCIS (Netherlands)

    Arzhaeva, Y.; Tax, D.; Van Ginneken, B.

    2006-01-01

    In this paper we compare and combine two distinct pattern classification approaches to the automated detection of regions with interstitial abnormalities in frontal chest radiographs. Standard two-class classifiers and recently developed one-class classifiers are considered. The one-class problem is

  19. [Radiographic diagnosis of abdominal diseases in foals and ponys. II. Pathologic findings in 60 cases].

    Science.gov (United States)

    Gerhards, H; Klein, H J; Offeney, F

    1990-08-01

    A diagnostic approach based on clinical and radiographic examinations for evaluation of young foals and small ponies with acute abdominal discomfort is presented. Standing right to left lateral abdominal radiographs were taken of 54 foals and 6 ponies using a previously described technique. Interpretation of the radiographs was in conjunction with all clinical and laboratory findings and patient management. Using this approach, the site and cause of acute abdominal discomfort could be diagnosed accurately in 55 of 60 (91%) patients as confirmed by clinical, surgical or necropsy findings. Typical radiographs and photographs taken at surgery or at necropsy are presented. Typical radiographic findings, their interpretation and possible underlying gastrointestinal diseases are listed. The incorporation of standing lateral abdominal radiography in the clinical evaluation of foals and ponies with acute abdominal diseases gives findings of high diagnostic significance and should contribute to clinical decision-making. Abdominal radiography can replace data from rectal palpation in foals and ponies.

  20. Construction of pediatric homogeneous phantoms for optimization of chest and skull radiographs

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Allan Felipe Fattori, E-mail: allan@ibb.unesp.br [Instituto de Biociências de Botucatu, P.O. BOX 510, Departamento de Física e Biofísica, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo (Brazil); Miranda, José Ricardo de Arruda, E-mail: jmiranda@ibb.unesp.br [Instituto de Biociências de Botucatu, Departamento de Física e Biofísica, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo (Brazil); Bacchim Neto, Fernando Antonio, E-mail: fernando.bacchim@gmail.com [Instituto de Biociências de Botucatu, Departamento de Física e Biofísica, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo (Brazil); Duarte, Sérgio Barbosa, E-mail: sbd@cbpf.br [Centro Brasileiro de Pesquisas Físicas, Laboratório de Altas Energias, Dr. Xavier Sigaud, 150, Rio de Janeiro, 22290-180 Rio de Janeiro (Brazil); Pina, Diana Rodrigues de, E-mail: drpina@fmb.unesp.br [Departamento de Doenças Tropicais e Diagnóstico por Imagem, Faculdade de Medicina de Botucatu, UNESP—Universidade Estadual Paulista, Distrito de Rubião Junior S/N, Botucatu, 18618-000 São Paulo (Brazil)

    2015-08-15

    Highlights: • We developed two pediatric patient-equivalent phantoms. • Our phantoms were used in the optimization process of computed radiography systems. • We evaluated physical quantities such as effective detective quantum efficiency and contrast-to-noise ratio. • We determined optimized techniques for pediatric protocols. - Abstract: Objectives: To develop two pediatric patient-equivalent phantoms, the Pediatric Chest Equivalent Patient (PCEP) and the Pediatric Skull Equivalent Patient (PSEP) for children aged 1 to 5 years. We also used both phantoms for image quality evaluations in computed radiography systems to determine Gold Standard (GS) techniques for pediatric patients. Methods: To determine the simulator materials thickness (Lucite and aluminum), we quantified biological tissues (lung, soft, and bone) using an automatic computational algorithm. To objectively establish image quality levels, two physical quantities were used: effective detective quantum efficiency and contrast-to-noise ratio. These quantities were associated to values obtained for standard patients from previous studies. Results: For chest radiographies, the GS technique applied was 81 kVp, associated to 2.0 mAs and 83.6 μGy of entrance skin dose (ESD), while for skull radiographies, the GS technique was 70 kVp, associated to 5 mAs and 339 μGy of ESD. Conclusion: This procedure allowed us to choose optimized techniques for pediatric protocols, thus improving quality of diagnosis for pediatric population and reducing diagnostic costs to our institution. These results could also be easily applied to other services with different equipment technologies.

  1. Shoulder arthroplasty. Part 2: Normal and abnormal radiographic findings

    Energy Technology Data Exchange (ETDEWEB)

    Sheridan, B.D., E-mail: bdsheridan@hotmail.com [Department of Orthopaedic Surgery, Bristol Royal Infirmary, Bristol (United Kingdom); Ahearn, N.; Tasker, A.; Wakeley, C.; Sarangi, P. [Department of Orthopaedic Surgery, Bristol Royal Infirmary, Bristol (United Kingdom)

    2012-07-15

    Frequently, the decision made by general practitioners or musculoskeletal triage assessment services to refer patients for specialist review is initiated by a radiological report. Following shoulder arthroplasty it is important to ensure that any patient with asymptomatic evidence of a failing prosthesis is referred for review so that revision surgery can be contemplated and planned before the situation becomes unsalvageable. The first paper in this series described the various types of shoulder arthroplasty and indications for each. This follow-up paper will concentrate on their modes of failure and the associated radiographic features, and is aimed at radiology trainees and non-musculoskeletal specialist radiologists.

  2. Characterization of interstitial lung disease in chest radiographs using SOM artificial neural network

    Energy Technology Data Exchange (ETDEWEB)

    Azevedo-Marques, P.M. de; Ambrosio, P.E.; Pereira, R.R. Jr.; Valini, R. de A.; Salomao, S.C. [Faculty of Medicine of Ribeirao Preto, Univ. of Sao Paulo (Brazil)

    2007-06-15

    This paper presents an automated approach to apply a self-organizing map (SOM) artificial neural network (ANN) as a tool for feature extraction and dimensionality reduction to recognize and characterize radiologic patterns of interstitial lung diseases in chest radiography. After feature extraction and dimensionality reduction a multilayer perceptron (MLP) ANN is applied for radiologic patterns classification in normal, linear, nodular or mixed. A leave-one-out methodology was applied for training and test over a database containing 17 samples of linear pattern, 9 samples of nodular pattern, 9 samples of mixed pattern and 18 samples of normal pattern. The MLP network provided an average result of 88.7% of right classification, with 100% of right classification for linear pattern, 55.5% for nodular pattern, 77.7% for mixed pattern and 100% for normal pattern. (orig.)

  3. Study of chest radiographs and pulmonary ventilatory function in perlite workers.

    Science.gov (United States)

    Cooper, W C; Sargent, E N

    1986-03-01

    A review of chest films from 152 workers who had been employed five or more years in perlite mining or processing showed none with small opacities of profusion 1/0 or higher. There were 14 films with doubtful changes (0/1), but these showed no correlation with type or duration of employment. Pulmonary function was measured in 122 current employees from the same plants. Multiple regression analysis showed no significant association between years of employment in perlite and either forced vital capacity (FVC) or forced expiratory volume (FEV1). There was a significant association between pack-years of cigarettes and both measurements. In 66 workers tested in 1975 and again in 1983, there was an average annual decrease in FVC of 32 mL, with 26 mL predicted by the Knudson formula, which is based on nonsmokers. The average annual decrease in FEV1 was 24 mL with 26 mL predicted. Comparison of groups with differing smoking patterns showed that the decreases in both FVC and FEV1 were associated with smoking. The 28 men who had added four or more pack-years in the interval between tests showed decreases in FVC and FEV1 of 44 mL/year and 31 mL/year, respectively, with 26 mL/year predicted for both groups. Those with less than four added pack-years (which included 26 nonsmokers) had decreases in FVC and FEV1 of 23 mL/year and 19 mL/year with 26 mL/year and 27 mL/year predicted.

  4. Radiographic findings in the jaws of clinically edentulous old people living at home in Helsinki, Finland.

    Science.gov (United States)

    Soikkonen, K; Ainamo, A; Wolf, J; Xie, Q; Tilvis, R; Valvanne, J; Erkinjuntti, T

    1994-08-01

    In the present survey the radiographic findings in the jaws of 124 clinically edentulous old people living at home in Helsinki, Finland, were studied, using panoramic radiography supplemented by intraoral radiographs. Only 9% of the subjects had root remains. Impacted teeth were found in 4%, radiolucent lesions in 3%, and radiopaque findings in 13%. Deviations from normal condylar structure were found in 17% and mucosal thickenings in the maxillary sinuses in 7%. The mental foramen was situated at the top of the residual ridge in 42% of the subjects. Topically situated mental foramen and condylar changes were commoner in women. The radiographic oral health status of the population studied was good.

  5. Clinical Findings in Patients with Splenic Injuries: Are Injuries to the Left Lower Chest Important?

    Directory of Open Access Journals (Sweden)

    Schneir, Aaron

    2001-07-01

    Full Text Available The purpose of this study was to describe the clinical findings in patients with splenic injury and to determine if isolated left lower chest injury may be the single clinical indicator of splenic injury. The medical records of all adult blunt trauma patients with splenic injury over a 14 month period were reviewed. Significant left lower chest injury was considered present if the patient had left sided pleuritic chest pain with tenderness to ribs 7-12 or if these ribs were visualized as fractured on any imaging study. Patients were considered to have clinical findings suggestive of splenic injury if they had pre-hospital or emergency department hypotension, abdominal pain or tenderness, a Glasgow coma scale < 15, or gross hematuria. Ninety patients had splenic injury. Thirty-nine (43%. 95% CI 33, 54% patients had significant left lower chest injury. In five (6%. 95% CI 2, 12% patients, injury to this portion of the chest was the single indicator of splenic injury. Nearly half the patients with splenic injury will have significant injury to the left lower chest and this finding may be the only indicator of splenic injury.

  6. Symptomatic pulmonary lipiodol embolism after transarterial chemoembolization for hepatic malignant tumor: clinical presentation and chest imaging findings

    Institute of Scientific and Technical Information of China (English)

    Xu Haifeng; Yang Renjie; Wang Xiaodong; Zhu Xu; Chen Hui

    2014-01-01

    Background Pulmonary lipiodol embolism after transarterial chemoembolization (TACE) was rare and life-threatening,occasionally reported in previous literatures.We aimed to review the records of 11 patients with pulmonary oily embolism and analyze their characteristics of radiographic findings and risk factors.Methods Records of 478 consecutive patients who underwent 1 026 percutaneous TACE procedures were retrospectively analyzed.Eleven cases with respiratory symptoms were identified as having symptomatic pulmonary lipiodol embolism after TACE.Data of these patients,including clinical presentation,techniques of TACE,imaging features of tumor and chest imaging findings,were assessed.Results Eleven (2.3%) of 478 consecutive patients who underwent percutaneous TACE procedures had a pulmonary oily embolism after procedures.The mean size of target tumors embolized was (13.6±2.0) cm.All were hyper-vascular.The mean volume of lipiodol was (21.8±8.2) ml.Pulmonary oily embolisms were revealed within 12-48 hours after TACE.The most severe respiratory symptoms and imaging abnormalities of the eight patients who survived presented between 2 and 5 days after TACE,becoming normal between 12 and 35 days after TACE.Three patients died.Chest CT revealed retention of radiopaque lipiodol in lungs.Conclusions Pulmonary lipiodol embolism occurs easily in patients who have large hyper-vascular hepatic malignant tumor.The high-density lipiodol deposition in the lung field can be used as diagnostic feature.

  7. Chest X-ray Findings of Woodworkers, Epidemiological and Experimental Study

    OpenAIRE

    Okita, Isao; Nakanishi, Takashi; Asaeda, Genkichi

    1983-01-01

    Mass examination of the ladorers in wood and products industries was conducted. The workers showing abnormal chest x-ray findings were over 40years of age and had worked longer than 20 years in these industries. The abnormal x-ray findings were linear and small opacities. From these observation, it is likely that the abnormal findings of chest x-ray films were associated with wooden dust. The experimental studies by infusing paulowina dust into the lungs of rats showed the foreign body granul...

  8. Interpretation of neonatal chest radiography

    Energy Technology Data Exchange (ETDEWEB)

    Yoon, Hye Kyung [Dept. of Radiology, Kangwon National University Hospital, Chuncheon (Korea, Republic of)

    2016-05-15

    Plain radiographs for infants in the neonatal intensive care unit are obtained using the portable X-ray equipment in order to evaluate the neonatal lungs and also to check the position of the tubes and catheters used for monitoring critically-ill neonates. Neonatal respiratory distress is caused by a variety of medical or surgical disease conditions. Clinical information about the gestational week, respiratory symptoms, and any events during delivery is essential for interpretation of the neonatal chest radiographs. Awareness of common chest abnormality in the prematurely born or term babies is also very important for chest evaluation in the newborn. Furthermore, knowledge about complications such as air leaks and bronchopulmonary dysplasia following treatment are required to accurately inform the clinicians. The purpose of this article was to briefly review radiographic findings of chest diseases in newborns that are relatively common in daily practice.

  9. Short-term impact of pictorial posters and a crash course on radiographic errors for improving the quality of paediatric chest radiographs in an unsupervised unit - a pilot study for quality-assurance outreach

    Energy Technology Data Exchange (ETDEWEB)

    Tebogo Hlabangana, Linda; Andronikou, Savvas [University of the Witwatersrand, Department of Diagnostic Radiology, Johannesburg (South Africa)

    2014-08-17

    Chest radiography is the most commonly performed diagnostic X-ray examination. The radiation dose to the patient for this examination is relatively low but because of its frequent use, the contribution to the collective dose is considerable. Optimized image quality not only allows for more accurate diagnosis but also supports radiation protection, which is particularly important in children. To determine whether the introduction of a poster of technical errors in paediatric radiography accompanied by a short lecture (crash course) for radiographers on common errors can sustainably decrease the number and rate of these errors in an unsupervised radiology department (without a paediatric-trained radiologist or paediatric-trained radiography personnel). We conducted a pilot study for quality-assurance outreach, with retrospective and prospective components, in the paediatric radiology department of a teaching hospital. The technical errors in frontal chest radiographs performed in the unit were assessed by quality-assurance analysis using a customized tick-sheet. The review was performed before and after an intervention that involved a half-hour crash course and poster displays in the department. We compared the rate of technical errors made before and after the intervention. There was statistically significant improvement in quality of radiographs (P < 0.0083) performed immediately after the intervention. There was a statistically significant decline in the quality of radiographs performed >2 months after the intervention. A simple intervention of a crash course and poster placement resulted in improved quality of paediatric chest radiographs. A decline in quality after 2 months suggests the need to repeat this or another type of intervention regularly. (orig.)

  10. A Rare Cause of Right-Sided Air Bubble on Chest Radiograph: Intrathoracic Gastric Volvulus Related to Morgagni Hernia

    Directory of Open Access Journals (Sweden)

    Abdurrahman Sahin

    2017-03-01

    Full Text Available Morgagni hernia is a rare disorder in adulthood, and most of the cases are asymptomatic. Symptomatic cases are extremely rare and present with life-threatening complications. Early diagnosis and surgery are lifesaving. We hereby present an adult case of symptomatic Morgagni hernia. Diaphragmatic herniation of the stomach and mesenteroaxial rotation led to intrathoracic gastric volvulus in this case. A right-sided air bubble on a chest radiogram was the only finding leading to the suspicion of diaphragmatic hernia. Computed tomography in the diagnosis of diaphragmatic hernias is of great importance.

  11. Chest radiographic image quality: comparison of asymmetric screen-film, digital storage phosphor, and digital selenium drum systems--preliminary study.

    Science.gov (United States)

    Beute, G H; Flynn, M J; Eyler, W R; Samei, E; Spizarny, D L; Zylak, C J

    1998-01-01

    Conventional screen-film radiography does not display all regions of the thorax satisfactorily. Three chest radiographic techniques display both the lung and the mediastinum with good contrast. These techniques are asymmetric screen-film (ASF), digital storage phosphor (DSP), and digital selenium drum (DSD) imaging. ASF systems use two asymmetric screen-film combinations to produce a wide-latitude image of the thorax with good contrast in the lungs. In DSP systems, image data are acquired digitally with a wide dynamic range by using the optical output of a photostimulable phosphor plate; in DSD systems, the wide-range digital image data are acquired by using the electronic charge generated on a drum coated with a thin layer of amorphous selenium. The appearance of a DSP or DSD radiograph is then determined by user-selected image processing operations: tone scaling, spatial frequency processing, and dynamic range compensation. Digital chest radiographs processed with strong regional equalization provide both excellent contrast in the lungs and effective display of the mediastinum and chest wall. At visual comparison, the high lung contrast and good mediastinal, retrocardiac, and subdiaphragmatic detail provided by the DSD method distinguish it from the other two methods.

  12. Autoimmune Pancreatitis: A Case of Atypical Radiographic Findings

    Directory of Open Access Journals (Sweden)

    Shawhin Karimi

    2016-10-01

    Full Text Available Autoimmune pancreatitis (AIP is a rare pancreatic disorder that can present as a manifestation of a broader systemic inflammatory disease known as immunoglobulin G4-related systemic disease (IGG4-RSD. AIP is divided into two subtypes based on clinical, radiological, and histological findings. The disease can be mistaken for pancreatic cancer because of overlapping clinical and radiological findings, but early recognition can help avoid unnecessary surgery. We present a case of a 65-year-old female with suspected acute gallstone pancreatitis found to have AIP based on serology, radiological findings, and response to steroids.

  13. Radiographic findings after pubic symphysiotomy: mean time to follow-up of 41.6 years.

    LENUS (Irish Health Repository)

    Galbraith, John G

    2014-01-01

    Pubic symphysiotomy is a rarely performed procedure in which the pubic symphysis is divided to facilitate vaginal delivery in cases of obstructed labor. Recently, many obstetricians have shown renewed interest in this procedure. The purpose of this paper is to report the long-term radiographic findings for patients who had undergone pubic symphysiotomy compared with the radiographic appearance of a group of age-matched and parity-matched controls.

  14. The accuracy of chest radiographs in the detection of congenital heart disease and in the diagnosis of specific congenital cardiac lesions

    Energy Technology Data Exchange (ETDEWEB)

    Laya, Bernard F. [St. Luke' s Medical Center, Department of Radiology, Quezon (Philippines); Goske, Marilyn J. [The Cleveland Clinic Foundation, Section of Pediatric Radiology, The Children' s Hospital, Cleveland, OH (United States); Children' s Hospital Medical Center of Akron, Department of Radiology, Akron, OH (United States); Morrison, Stuart; Reid, Janet R. [The Cleveland Clinic Foundation, Section of Pediatric Radiology, The Children' s Hospital, Cleveland, OH (United States); Swischuck, Leonard [The University of Texas Medical Branch, Department of Radiology, Galveston, TX (United States); Ey, Elizabeth H. [The Children' s Medical Center, Department of Medical Imaging, Dayton, OH (United States); Murphy, Daniel J. [Stanford University Medical Center, Department of Pediatrics, Palo Alto, CA (United States); Lieber, Michael; Obuchowski, Nancy [The Cleveland Clinic Foundation, Department of Quantitative Health Sciences, Cleveland, OH (United States)

    2006-07-15

    Congenital heart disease (CHD) is a significant cause of morbidity and mortality in pediatric patients. Traditional teaching holds that specific types of CHD can be diagnosed on the chest radiograph (CXR) through pattern recognition. To determine the accuracy of radiologists in detecting CHD on the CXR. This study was a blinded retrospective review of chest radiographs from 281 patients (<12 years) by five pediatric radiologists from three institutions. Thirteen groups were evaluated that included 12 categories of CHD and a control group of patients without heart disease. Radiographs were assessed for heart size, heart and mediastinal shape and vascularity. Clinical information, angiography, echocardiograms and surgery were used as the gold standard for definitive diagnosis. The average accuracy of the five readers in distinguishing normal from CHD patients was 78% (range of 72% to 82%). The overall measure of accuracy in distinguishing specific congenital cardiac lesions among 13 groups of patients was 71% (range of 63% to 79%). CXR alone is not diagnostic of specific cardiac lesions, with a low accuracy of only 71%. We believe that less emphasis should be placed on the use of radiographs alone in diagnosing specific congenital cardiac lesions. (orig.)

  15. Computer-aided detection of lung cancer on chest radiographs: effect of machine CAD true positive/false negative detections on radiologists' confidence level

    Science.gov (United States)

    Freedman, Matthew T.; Osicka, Teresa; Lo, Shih-Chung Benedict; Lure, Fleming; Xu, Xin-Wei; Lin, Jesse; Zhao, Hui; Zhang, Ron

    2004-05-01

    This paper evaluates the effect of Computer-Aided Detection prompts on the confidence and detection of cancer on chest radiographs. Expected findings included an increase in confidence rating and a decrease in variance in confidence when radiologists interacted with a computer prompt that confirmed their initial decision or induced them to switch from an incorrect to a correct decision. Their confidence rating decreased and the variance of confidence rating increased when the computer failed to confirm a correct or incorrect decision. A population of cases was identified that changed among reading modalities. This unstable group of cases differed between the Independent and Sequential without CAD modalities in cancer detection by radiologists and cancer detection by machine. CAD prompts induced the radiologists to make two types of changes in cases: changes on the sequential modality with CAD that restored an initial diagnosis made in the Independent read and new changes that were not present in the Independent or Sequential reads without CAD. This has implications for double reading of cases. The effects of intra-observer variability and inter-observer variability are suggested as potential causes for differences in statistical significance of the Independent and Sequential Design approaches to ROC studies.

  16. Prevalence of Radiologic Findings in Patients with Blunt Chest Trauma in Isfahan

    Directory of Open Access Journals (Sweden)

    M. Haghighi

    2008-01-01

    Full Text Available Background/Objective: Chest trauma due to its vital organs can be very dangerous and lethal. Our country has the first grade of accidents in the word, so rapid diagnosis and treatment in patients with chest trauma is necessary. One cost benefit and available imaging modality in each Region of our country is X-ray."nCXR interpretation needs to knowledge about prevalence of abnormal Radiologic findings and their accuracy. Therefore, it is necessary to perform a study about the rate of CXR abnormal findings in patients with blunt chest trauma."nPatients and Methods: In this descriptive and prospective study, CXR of patients with blunt chest trauma that admitted in Alzahra and Kashani hospitals studied and percent of vital radiologic findings prevalence determined."nResults: The final results were as below:"n1- Rib FX (18.5% (143, 2- Hemothorax (13.6% (105, 3- Pneumothorax (11.8% (91, 4- Sub cutaneous emphysema (10.2% (79, 5- Lung laceration (8.1% (63, 6- Mediastinal winding (6.4% (50, 7- Clavicular and sternal FX (5.8% (44, 8- Pneumo mediastinum (4.1% (32, 9- spinal FX (3.5% (27, 10- Great vessels injury signs (1.4% (11."nConclusion: According to above results, accurate investigation of CXR, helps physician and radiologist to find any threatened finding, so determination of next step as clinical follow up or spiral CT, angiography or surgery; accordingly.

  17. 婴儿床边摄影图像伪影排除与研究%Study and elimination of artifacts on infant bed-side chest radiograph

    Institute of Scientific and Technical Information of China (English)

    聂世琨; 陈小军; 王柏烨; 文翠昆

    2013-01-01

    Objective: To analyze and understand the artifacts on infant bed-side chest radiograph, and to prevent their occurring to reduce diagnostic errors. Methods: Infant bedside chest radiograph were obtained randomly for quality control. Artifacts with regular shape but different location were found on the above images. Measures to eliminate the artifacts were taken as the followings: Firstly, digital panel, X-ray tube window and collimator were observed to eliminate fixed foreign body; secondly, the digital panel was collimated, and finally, collimator must be dismantled and cleaned up. Results: The machine problem was solved and the image artifacts disappeared after the above measures were taken. Conclusions: It is easy to produce image artifacts on infant bed-side chest radiograph due to low exposure conditions for infant chest and high low-contrast resolution.%目的:通过分析少见的婴儿床边胸部图像,掌握其伪影形成的原因及排除方法,以防止因此图像伪影的产生而造成诊断的错误.方法:随机抽取6~7张有形状固定且位置不固定的伪影的婴儿床边胸片.检查摄影时数字平板和X射线管窗口及束光器有无固定异物,对数字平板进行校正,拆开束光器清洁束光器内部四周灰尘及尘渣.结果:故障排除,图像伪影消失.结论:由于婴儿胸部摄影曝光条件弱,加之DR图像低对比分辨率高,故在婴儿胸片上容易产生图像伪影.

  18. Epiphyseal involvement in Erdheim-Chester disease: radiographic and scintigraphic findings in a case with lytic lesions

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz-Hernandez, G.; Tajahuerce-Romera, G.M.; Latorre-Ibanez, M.D.; Lara-Pomares, A. [Servicio de Medicina Nuclear, Hospital Provincial de Castellon (Spain); Vila-Fayos, V. [Servicio de Reumatologia, Hospital Comarcal de Vinaroz (Spain)

    2000-08-01

    We reported a symmetric increase of activity in lower links secondary to Erdheim-Chester disease and demonstrated by bone scans and radiographs. An inusual scintigraphic and radiographic appearance with epiphyseal involvement and lytic lesions is described. Differential diagnosis of bone scan and radiographic findings is discussed. (orig.)

  19. Chest HRCT findings in acute transformation of adult T-cell lymphoma/leukemia

    Energy Technology Data Exchange (ETDEWEB)

    Okada, Fumito; Sato, Haruka; Omeri, Ahmad Khalid; Ono, Asami; Tokuyama, Kouhei; Ando, Yumiko; Matsumoto, Akira; Mori, Hiromu [Oita University Faculty of Medicine, Department of Radiology, Yufu, Oita (Japan); Ogata, Masao; Kohno, Kazuhiro; Takano, Kuniko [Oita University Faculty of Medicine, Department of Medical Oncology and Hematology, Yufu, Oita (Japan)

    2015-06-01

    To assess chest high-resolution computed tomography (HRCT) findings in patients with acute transformation of adult T cell leukaemia/lymphoma (ATLL). We retrospectively identified 72 consecutive patients at our institution with ATLL between October 2000 and March 2014. The cases included acute type (n = 20), lymphoma type (n = 21), smouldering type (n = 24) and chronic type (n = 7). Sixteen (7 men, 9 women; aged 36-85 years, mean 63.3 years) of 31 patients (24 with smouldering and seven with chronic type; 51.6 %) developed acute transformation of ATLL, and had undergone chest HRCT examinations. Parenchymal abnormalities, enlarged lymph nodes, pericardial effusion, pleural effusion and skin lesions were evaluated on HRCT. Chest HRCT of 15 of the 16 patients showed abnormal findings, including ground-glass opacity (GGO) (n = 8), consolidation (n = 5), interlobular septal thickening (n = 5) and nodules (n = 5). Pleural effusion was found in five patients, lymph node enlargement in 10 patients and multiple skin thickening in two patients. Almost all patients with acute transformation of ATLL had abnormal findings on chest HRCT, which consisted mainly of lymph node enlargement, GGO, interlobular septal thickening, nodules and bilateral pleural effusions. (orig.)

  20. Chest computed tomography findings in severe influenza pneumonia occurring in neutropenic cancer patients

    Directory of Open Access Journals (Sweden)

    Rosana Souza Rodrigues

    2012-01-01

    Full Text Available OBJECTIVE: To describe the chest computed tomography findings for severe influenza H1N1 infection in a series of hospitalized neutropenic cancer patients. METHODS: We performed a retrospective systematic analysis of chest computed tomography scans for eight hospitalized patients with fever, neutropenia, and confirmed diagnoses of influenza H1N1. The clinical data had been prospectively collected. RESULTS: Six of eight patients (75% developed respiratory failure and required intensive care. Prolonged H1N1 shedding was observed in the three mechanically ventilated patients, and overall hospital mortality in our series was 25%. The most frequent computed tomography findings were ground-glass opacity (all patients, consolidation (7/8 cases, and airspace nodules (6/8 cases that were frequently moderate or severe. Other parenchymal findings were not common. Five patients had features of pneumonia, two had computed tomography findings compatible with bronchitis and/or bronchiolitis, and one had tomographic signs of chronicity. CONCLUSION: In this series of neutropenic patients with severe influenza H1N1 infection, chest computed tomography demonstrated mainly moderate or severe parenchymatous disease, but bronchiolitis was not a common feature. These findings associated with febrile neutropenia should elicit a diagnosis of severe viral infection.

  1. Development of CAD based on ANN analysis of power spectra for pneumoconiosis in chest radiographs: effect of three new enhancement methods.

    Science.gov (United States)

    Okumura, Eiichiro; Kawashita, Ikuo; Ishida, Takayuki

    2014-07-01

    We have been developing a computer-aided detection (CAD) scheme for pneumoconiosis based on a rule-based plus artificial neural network (ANN) analysis of power spectra. In this study, we have developed three enhancement methods for the abnormal patterns to reduce false-positive and false-negative values. The image database consisted of 2 normal and 15 abnormal chest radiographs. The International Labour Organization standard chest radiographs with pneumoconiosis were categorized as subcategory, size, and shape of pneumoconiosis. Regions of interest (ROIs) with a matrix size of 32 × 32 were selected from normal and abnormal lungs. Three new enhanced methods were obtained by window function, top-hat transformation, and gray-level co-occurrence matrix analysis. We calculated the power spectrum (PS) of all ROIs by Fourier transform. For the classification between normal and abnormal ROIs, we applied a combined analysis using the ruled-based plus the ANN method. To evaluate the overall performance of this CAD scheme, we employed ROC analysis for distinguishing between normal and abnormal ROIs. On the chest radiographs of the highest categories (severe pneumoconiosis) and the lowest categories (early pneumoconiosis), this CAD scheme achieved area under the curve (AUC) values of 0.93 ± 0.02 and 0.72 ± 0.03. The combined rule-based plus ANN method with the three new enhanced methods obtained the highest classification performance for distinguishing between abnormal and normal ROIs. Our CAD system based on the three new enhanced methods would be useful in assisting radiologists in the classification of pneumoconiosis.

  2. Characteristic calcaneal ossification: an additional early radiographic finding in infants with fibrodysplasia ossificans progressiva

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, Sachi [Nagoya University Graduate School of Medicine, Department of Orthopaedic Surgery, Nagoya, Aichi (Japan); Victoria, Teresa [Children' s Hospital of Philadelphia, Department of Radiology, Philadelphia, PA (United States); Kayserili, Huelya [Koc University School of Medicine (KUSOM), Medical Genetics Department, Istanbul (Turkey); Zackai, Elaine [Children' s Hospital of Philadelphia, Department of Medical Genetics, Philadelphia, PA (United States); Nishimura, Gen; Haga, Nobuhiko; Nakashima, Yasuharu; Miyazaki, Osamu [The Research Committee on Fibrodysplasia Ossificans Progressiva, Tokyo (Japan); Kitoh, Hiroshi [Nagoya University Graduate School of Medicine, Department of Orthopaedic Surgery, Nagoya, Aichi (Japan); The Research Committee on Fibrodysplasia Ossificans Progressiva, Tokyo (Japan)

    2016-10-15

    We have clinically encountered children with fibrodysplasia ossificans progressiva who had abnormal calcaneal ossification. To evaluate whether calcaneal ossification variants are significant radiographic findings in children with fibrodysplasia ossificans progressiva. Lateral feet radiographs in nine children who fulfilled the diagnostic criteria of fibrodysplasia ossificans progressiva were reviewed. The studies were obtained during infancy or early childhood. Fourteen lateral foot radiographs of fibrodysplasia ossificans progressiva were available for this study (ages at examination: 1-104 months). Four children ages 2 months to 11 months showed double calcaneal ossification centers; 7 children had plantar calcaneal spurs that decreased in size with age. Overall, eight of nine children with fibrodysplasia ossificans progressiva demonstrated double calcaneal ossifications and/or plantar calcaneal spurs in infancy or childhood. Double calcaneal ossification centers in early infancy and plantar calcaneal spurs in childhood are frequently seen in children with fibrodysplasia ossificans progressiva and may be a useful radiologic indicator for early diagnosis. (orig.)

  3. Management approach for recurrent spontaneous pneumothorax in consecutive pregnancies based on clinical and radiographic findings

    Directory of Open Access Journals (Sweden)

    Dixson George R

    2006-10-01

    Full Text Available Abstract Objective To describe management and clinical features observed in a patient's seven spontaneous pneumothoraces that developed during two consecutive pregnancies involving both hemithoraces. Materials and methods A 21 year old former smoker developed three spontaneous left pneumothoraces in the index pregnancy, having already experienced four right pneumothorax events in a prior pregnancy at age 19. Results Chest tubes were required in several (but not all hospitalizations during these two pregnancies. Following her fourth right pneumothorax, thoracoscopic excision of right apical lung blebs and mechanical pleurodesis was performed. The series of left pneumothoraces culminated in mini-thoracotomy and thoracoscopically directed mechanical pleurodesis. For both pregnancies unassisted vaginal delivery was performed with no adverse perinatal sequelae. With the exception of multiple pneumothoraces, there were no additional pregnancy complications. Conclusion Spontaneous pneumothorax in pregnancy is believed to be a rare phenomenon, yet the exact incidence is unknown. Here we present the first known case of multiple spontaneous pneumothoraces in two consecutive pregnancies involving both hemithoraces. Clinical management coordinated with obstetrics and surgical teams facilitated a satisfactory outcome for both pregnancies. The diagnosis of pneumothorax should be contemplated in any pregnant patient with dyspnea and chest pain, followed by radiographic confirmation.

  4. Desmoplastic fibroma of bone in a toe: Radiographic and MRI findings

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ok Hwa; Kim, Seon Jeong; Kim Ji Yeon; Ryu, Ji Hwa [Inje University, Haeundae Paik Hospital, Busan (Korea, Republic of); Choo, Hye Jung [Dept. of Radiology, Inje University, Busan Paik Hospital, Busan (Korea, Republic of); Lee, In Sook [Dept. of Radiology, Busan National University Hospital, Busan (Korea, Republic of); Suh, Kyung Jin [Dept. of Radiology, Dongguk University, Gyeongju Hospital, Gyeongju (Korea, Republic of)

    2013-12-15

    Desmoplastic fibroma is a rare benign primary bone tumor that is histologically similar to the soft tissue desmoid tumor. It most often involves the mandible, large long bone or iliac bone. Desmoplastic fibroma in a toe has been extremely rarely reported. Authors report a rare case of desmoplastic fibroma of bone occurring in the distal phalanx of a foot, with descriptions of the radiographic and MRI findings, correlation of the radiologic and pathologic findings, and discussion on the differential diagnosis of the tumor.

  5. CT staging of colorectal cancer: What do you find in the chest?

    Energy Technology Data Exchange (ETDEWEB)

    McQueen, A.S., E-mail: andrewmcqueen7@hotmail.com [Department of Radiology, Freeman Hospital, Newcastle upon Tyne (United Kingdom); Scott, J. [Department of Radiology, Freeman Hospital, Newcastle upon Tyne (United Kingdom)

    2012-04-15

    Aim: To clarify the chest computed tomography (CT) findings in patients with a new diagnosis of colorectal adenocarcinoma. Materials and methods: Patients diagnosed with colorectal cancer (CRC) over a 3-year period were retrospectively studied. All CT examinations were performed within a single NHS Trust using the same CT system and protocol. Two primary outcomes were assessed: the presence of pulmonary metastases and the identification of a significant, unexpected chest abnormality. Results: Five hundred and fourteen out of 568 (90.5%) CRC patients underwent complete CT staging. Thirty-one patients (6%) had lung metastases, of which four (0.8%) were isolated. Three hundred and fifty-three (68.7%) had no evidence of pulmonary metastases, but 130 (25.3%) had indeterminate lung nodules (ILNs). The ILNs of 12 patients were subsequently confirmed as metastases on follow-up. A major non-metastatic finding (pulmonary embolism or synchronous primary malignancy) was found in 15/514 patients (3%). Conclusions: Thoracic CT altered the initial TNM stage in fewer than 1% of CRC patients, but the detection of significant incidental chest disease and the establishment of an imaging baseline are useful outcomes of this imaging strategy. One-quarter of all staging examinations demonstrated ILNs.

  6. Computerized analysis of interstitial lung diseases on chest radiographs based on lung texture, geometric-pattern features, and artificial neural networks

    Science.gov (United States)

    Ishida, Takayuki; Katsuragawa, Shigehiko; Nakamura, Katsumi; Ashizawa, Kazuto; MacMahon, Heber; Doi, Kunio

    2002-05-01

    For computerized detection of interstitial lung disease on chest radiographs, we developed three different methods: texture analysis based on the Fourier transform, geometric- pattern feature analysis, and artificial neural network (ANN) analysis of image data. With these computer-aided diagnostic methods, quantitative measures can be obtained. To improve the diagnostic accuracy, we investigated combined classification schemes by using the results obtained with the three methods for distinction between normal and abnormal chest radiographs with interstitial opacities. The sensitivities of texture analysis, geometric analysis, and ANN analysis were 88.0+/- 1.6%, 91.0+/- 2.6%, and 87.5+/- 1.9%, respectively, at a specificity of 90.0%, whereas the sensitivity of a combined classification scheme with the logical OR operation was improved to 97.1%+/- 1.5% at the same specificity of 90.0%. The combined scheme can achieve higher accuracy than the individual methods for distinction between normal and abnormal cases with interstitial opacities.

  7. Sonographic and radiographic imaging features of the neonate with necrotizing enterocolitis: correlating findings with outcomes

    Energy Technology Data Exchange (ETDEWEB)

    Muchantef, Karl [Perelman School of Medicine at the University of Pennsylvania, Department of Radiology, The Children' s Hospital of Philadelphia, Philadelphia, PA (United States); McGill University, Department of Diagnostic Radiology, Montreal Children' s Hospital, Montreal (Canada); Epelman, Monica [Perelman School of Medicine at the University of Pennsylvania, Department of Radiology, The Children' s Hospital of Philadelphia, Philadelphia, PA (United States); Nemours Children' s Hospital, Department of Radiology, Orlando, FL (United States); Darge, Kassa; Anupindi, Sudha A. [Perelman School of Medicine at the University of Pennsylvania, Department of Radiology, The Children' s Hospital of Philadelphia, Philadelphia, PA (United States); Kirpalani, Haresh [Perelman School of Medicine at the University of Pennsylvania, Division of Neonatology, The Children' s Hospital of Philadelphia, Philadelphia, PA (United States); Laje, Pablo [Perelman School of Medicine at the University of Pennsylvania, Department of Surgery, The Children' s Hospital of Philadelphia, Philadelphia, PA (United States)

    2013-11-15

    Abdominal radiography is the reference standard in imaging neonates with necrotizing enterocolitis (NEC); however, ultrasound of the abdomen including bowel may be of value in this setting. To correlate sonographic and radiographic findings with patient outcomes in NEC. We reviewed sonographic and radiographic exams, as well as clinical, pathological and laboratory records. Ultrasound images were reviewed for free intraperitoneal gas, peritoneal fluid, pneumatosis intestinalis, portal gas, bowel vascularity, bowel wall thickness and echogenicity, peristalsis and the presence of dilated bowel with anechoic contents. Contemporaneously acquired radiographs were reviewed for intraperitoneal gas, pneumatosis intestinalis, portal gas, the sentinel loop sign and gas pattern. Patients were categorized into two groups based on clinical outcome. Forty-four neonates receiving 55 sonograms were included. Focal fluid collections, echogenic free fluid, increased bowel wall echogenicity and increased bowel wall thickness were statistically significant in predicting an unfavorable outcome. Other features approached significance in predicting poor outcomes: free peritoneal gas, pneumatosis intestinalis, aperistalsis, bowel wall thinning and absent bowel perfusion. Anechoic free peritoneal fluid predicted a good outcome. The sentinel loop sign on radiographs predicted an unfavorable outcome. Abdominal sonography and radiography in patients with NEC can help prognosticate the outcome. (orig.)

  8. Evaluation of the image quality of ink-jet printed paper copies of digital chest radiographs as compared with film: a receiver operating characteristic study.

    Science.gov (United States)

    Lyttkens, K; Kirkhorn, T; Kehler, M; Andersson, B; Ebbesen, A; Hochbergs, P; Jarlman, O; Lindberg, C G; Holmer, N G

    1994-05-01

    Paper copies of digital radiographs printed with the continuous ink-jet technique have proved to be of a high enough quality for demonstration purposes. We present a study on the image quality of ink-jet printed paper copies of digital chest radiographs, based on receiver operating characteristic (ROC) analysis. Eighty-three digital radiographs of a chest phantom with simulated tumors in the mediastinum and right lung, derived from a computed radiography (CR) system were presented in two series of hard copies as ink-jet printed paper copies and as laser recorded film. The images, with a matrix of 1,760 x 2,140 pixels, were printed with a spatial resolution of 10 pixels/mm in the CR film recorder as well as in the ink-jet printer. On film, every image was recorded in two versions, one optimized for the mediastinum and one for the lungs. On paper, only one image was printed; this constituted an effort to optimize both the mediastinum and the lungs. The ink-jet printed images, printed on a matt coated paper, were viewed as on-sight images with reflected light. The examinations were reviewed by six radiologists, and ROC curves were constructed. No significant difference was found between the performance of film and that of ink-jet paper prints. Because the cost for a paper copy is only a tenth of that of film, remarkable cost reductions can be achieved by using the ink jet technique instead. Our results show that further quality studies of ink-jet printed images are worthwhile.

  9. [Comparison of LCD and CRT monitors for detection of pulmonary nodules and interstitial lung diseases on digital chest radiographs by using receiver operating characteristic analysis].

    Science.gov (United States)

    Ikeda, Ryuji; Katsuragawa, Shigehiko; Shimonobou, Toshiaki; Hiai, Yasuhiro; Hashida, Masahiro; Awai, Kazuo; Yamashita, Yasuyuki; Doi, Kunio

    2006-05-20

    Soft copy reading of digital images has been practiced commonly in the PACS environment. In this study, we compared liquid-crystal display (LCD) and cathode-ray tube (CRT) monitors for detection of pulmonary nodules and interstitial lung diseases on digital chest radiographs by using receiver operating characteristic (ROC) analysis. Digital chest images with a 1000x1000 matrix size and a 8 bit grayscale were displayed on LCD/CRT monitor with 2M pixels in each observer test. Eight and ten radiologists participated in the observer tests for detection of nodules and interstitial diseases, respectively. In each observer test, radiologists marked their confidence levels for diagnosis of pulmonary nodules or interstitial diseases. The detection performance of radiologists was evaluated by ROC analyses. The average Az values (area under the ROC curve) in detecting pulmonary nodules with LCD and CRT monitors were 0.792 and 0.814, respectively. In addition, the average Az values in detecting interstitial diseases with LCD and CRT monitors were 0.951 and 0.953, respectively. There was no statistically significant difference between LCD and CRT for both detection of pulmonary nodules (P=0.522) and interstitial lung diseases (P=0.869). Therefore, we believe that the LCD monitor instead of the CRT monitor can be used for the diagnosis of pulmonary nodules and interstitial lung diseases in digital chest images.

  10. A Retrospective Analysis of Radiographic Jaw Findings in Young Women; Prevalence and Predictors

    Science.gov (United States)

    El Khateeb, Sara M.; Abu-Hammad, Osama; Fadel, Hani; Dar-Odeh, Najla

    2017-01-01

    Aims and Objectives: To determine the prevalence and types of jaw pathologic findings as detected in panoramic radiographs of a sample of young women attending a teaching hospital in Al Madinah Al Munawarah, Saudi Arabia, and to determine the most important factors that predict the occurrence of jaw pathologic findings. Materials and Methods: The electronic clinical files of a representative sample of female patients who attended the outpatient dental clinics were retrieved. Patients were aged 18 to 25 years. Types of pathologic radiographic jaw findings and their prevalence were determined through screening of panoramic radiographs. Data were analyzed using the statistical analysis software [SPSS version 21 (IBM Corp.)]. Multiple linear regression was used to explore the significance of some types of dental lesions as predictor variables for the occurrence of jaw pathologic findings. Results: A total of 190 patients (mean age, 22.4 ± 2.46 years) were included in the study. Periapical lesions, retained roots, and alveolar bone loss were detected in 53.6%, 24.8%, and 17.4% of the participants, respectively. Other odontogenic abnormalities such as supernumerary and impacted teeth (6.4% and 33.7%, respectively) were also detected. Patients' age was found to be a good predictor for alveolar bone loss and number of periapical lesions (P ≤ 0.05). Conclusions: A high prevalence of periapical lesions, retained roots, and alveolar bone loss was found among a sample of young female dental attendees, as shown by their panoramic radiographs. Further studies are needed to explore potential risk factors for such a noticeable trend of poor oral health, and the needed strategies to counteract this trend. PMID:28316945

  11. Radiographic findings on 3rd molars removed in 20-year-old men.

    Science.gov (United States)

    Rajasuo, Ari; Peltola, Jaakko; Ventä, Irja; Murtomaa, Heikki

    2003-10-01

    In this study we assess radiographic findings characteristic of mandibular 3rd molars that had required either routine or surgical extraction. X-ray findings relating to acute pericoronitis were also examined. The material was collected by investigating patient records and rotational panoramic radiographs of 20-year-old Finnish male conscripts (n = 738) treated during military service because of 3rd-molar-related problems. The follicle around the crown of mandibular 3rd molars with acute pericoronitis was enlarged in 19% of cases and in 13% of chronic symptom-free pericoronitis cases (not statistically significant difference). Mandibular 3rd molars extracted surgically were more often mesially inclined than those extracted routinely (61% vs. 23%; P pericoronitis [around 27% vs. 39% of the teeth routinely extracted (OR 0.5, 95% CI 0.3-0.8)]. In 86% of cases the space between 2nd molar and ramus of the mandible was narrower than the 3rd molar extracted surgically, whereas this was 62% in routine extraction cases (P < 0.001). We conclude that there are some typical 3rd-molar findings in rotational panoramic radiographs that show a need for surgical extraction.

  12. Genetic correlations between conformation traits and radiographic findings in the limbs of German Warmblood riding horses.

    Science.gov (United States)

    Stock, Kathrin Friederike; Distl, Ottmar

    2006-01-01

    Studbook inspection (SBI) data of 20 768 German Warmblood mares and radiography results (RR) data of 5102 Hanoverian Warmblood horses were used for genetic correlation analyses. The scores on a scale from 0 to 10 were given for conformation and basic quality of gaits, resulting in 14 SBI traits which were used for the correlation analyses. The radiographic findings considered included osseous fragments in fetlock (OFF) and hock joints (OFH), deforming arthropathy in hock joints (DAH) and distinct radiographic findings in the navicular bones (DNB) which were analyzed as binary traits, and radiographic appearance of the navicular bones (RNB) which was analyzed as a quasi-linear trait. Genetic parameters were estimated multivariately in linear animal models with REML using information on 24 448 horses with SBI and/or RR records. The ranges of heritability estimates were h2 = 0.14-0.34 for the RR traits and h2 = 0.09-0.50 for the SBI traits. Negative additive genetic correlations of r(g) = -0.19 to -0.56 were estimated between OFF and conformation of front and hind limbs and walk at hand, and between DNB and hind limb conformation. There were indications of negative additive genetic correlations between DAH and all SBI traits, but because of low prevalence and low heritability of DAH, these results require further scrutiny. Positive additive genetic correlations of r(g) = 0.37-0.52 were estimated between OFF and withers height and between OFH and withers height, indicating that selection for taller horses will increase disposition to develop OFF and OFH. Selection of broodmares with regards to functional conformation will assist, but cannot replace possible selection against radiographic findings in the limbs of young Warmblood riding horses, particularly with regards to OFF.

  13. Genetic correlations between conformation traits and radiographic findings in the limbs of German Warmblood riding horses

    Directory of Open Access Journals (Sweden)

    Distl Ottmar

    2006-11-01

    Full Text Available Abstract Studbook inspection (SBI data of 20 768 German Warmblood mares and radiography results (RR data of 5102 Hanoverian Warmblood horses were used for genetic correlation analyses. The scores on a scale from 0 to 10 were given for conformation and basic quality of gaits, resulting in 14 SBI traits which were used for the correlation analyses. The radiographic findings considered included osseous fragments in fetlock (OFF and hock joints (OFH, deforming arthropathy in hock joints (DAH and distinct radiographic findings in the navicular bones (DNB which were analyzed as binary traits, and radiographic appearance of the navicular bones (RNB which was analyzed as a quasi-linear trait. Genetic parameters were estimated multivariately in linear animal models with REML using information on 24 448 horses with SBI and/or RR records. The ranges of heritability estimates were h2 = 0.14–0.34 for the RR traits and h2 = 0.09–0.50 for the SBI traits. Negative additive genetic correlations of rg = -0.19 to -0.56 were estimated between OFF and conformation of front and hind limbs and walk at hand, and between DNB and hind limb conformation. There were indications of negative additive genetic correlations between DAH and all SBI traits, but because of low prevalence and low heritability of DAH, these results require further scrutiny. Positive additive genetic correlations of rg = 0.37–0.52 were estimated between OFF and withers height and between OFH and withers height, indicating that selection for taller horses will increase disposition to develop OFF and OFH. Selection of broodmares with regards to functional conformation will assist, but cannot replace possible selection against radiographic findings in the limbs of young Warmblood riding horses, particularly with regards to OFF.

  14. Chest radiographic and CT features of acute inhaled mercury poisoning%急性吸入性汞中毒胸部X线及CT表现

    Institute of Scientific and Technical Information of China (English)

    刘雨峰

    2012-01-01

    Objective To analyze chest radiographic and CT features of acute inhaled mercury poisoning. Methods 23 cases with high concentration of mercury vapour inhaled acutely were included in this study. Among them, 81 cases underwent chest radio-graphics (61 times) and 11 cases underwent CT scanning(17 times). Radiographic and CT features were analysed. Results Chest radiographs showed pneumonia in 10 cases, the lesions appeared as multiple and scattered patchy high density in bilateral lung field with obscure border, and 3 cases combined with emphysema. There were 7 cases of interstitial pneumonia, radiographs showed lung markings increased and disorder, patchy, strip and gridding high dense shadows. 6 cases had toxic bubble pulmonary edema, which presented as large patchy dense shadows, and 4 cases of interstitial pulmonary edema, K's A,B lines were seen. On CT images, pneumonia appeared as multiple and scattered patchy shadows in bilateral lung field with bullous emphysemas which were low dense thin-wall bubbly shadows. Interstitial pneumonia appeared as lung weight lung markings in creased and blurred, resulted in massive, stripe net-like dense shadows with exudative changes around the lesions. Bullous pulmonary edema appeared as large patchy or butterfly wing-like dense shadow with undefinitive borders. Conclusion The chest X-ray and CT manifestations arc of certain characteristics in acute inhalation of mercury-induced pneumonia, combined with the clinical history and laboratory examination the diagnosis may be done.%目的 分析急性吸入性汞中毒性肺炎胸部X线及CT表现.方法 23例急性吸入性汞中毒患者,拍摄胸部平片61次,其中11例行胸部CT扫描17次,分析其X线及CT表现.结果 23例入院时X线片示汞毒性实质性肺炎10例,表现为双肺野多发片状密度增高影,边缘模糊,散在分布,3例伴有泡性肺气肿.汞毒性肺间质性炎症7例,表现为肺纹理增重模糊及紊乱,呈

  15. Kashin-Beck disease in children: radiographic findings in the wrist

    Energy Technology Data Exchange (ETDEWEB)

    Yu, W. [Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing (China); Department of Radiology, Musculoskeletal Section and Osteoporosis and Arthritis Research Group, University of California, San Francisco, CA (United States); Wang, Y. [Beijing Ji Shui Tan Hospital, Institute of Traumatology and Orthopaedics, Beijing (China); Jiang, Y.; Cheng, X. [Beijing Ji Shui Tan Hospital, Institute of Traumatology and Orthopaedics, Beijing (China); Wang, L.; Genant, H.K. [Department of Radiology, Musculoskeletal Section and Osteoporosis and Arthritis Research Group, University of California, San Francisco, CA (United States)

    2002-04-01

    Objective: To characterize the features and prevalence of radiographic abnormalities of the wrist in children with Kashin-Beck disease (KBD) and to determine whether the presence of radiographic abnormalities in the wrist correlates with the severity of KBD. Design and patients: Two hundred and eight posteroanterior radiographs of the right hand (including wrist) in children with KBD, ranging in age from 4 to 11 years (mean age 7.7 years), from endemic areas of China were reviewed. Carpal bony margins were evaluated for blurring, thinning, irregularity with and without sclerosis, interruption, depression or destruction. The radiocarpal, intercarpal and carpometacarpal joints were assessed for widening or narrowing. The severity of the disease was graded using the hand criteria from the Chinese Radiographic Criteria of KBD Diagnosis, which classifies the following five types according to the location of the hand involved: I, metaphysis; II, diaphysis; III, I+II; IV, metaphysis and epiphysis; V, II+IV. Results: Of the 208 children, 95 had abnormalities in the hand but not in the wrist; 108 had both hand and wrist abnormalities; only five had abnormal wrist findings without any hand abnormalities. Of the 108 cases with wrist abnormalities, all the carpal bones were involved in 33 cases, of which the hand types were either IV or V. However, any individual carpal bone, or combination of bones, may become involved. The carpal bones most likely to show abnormalities were the capitate and the hamate (93%), followed by the triquetrum (31%), the lunate (9%), the scaphoid (6%), and the trapezoid and the trapezium (5%). The pisiform bones were not evaluated because they cannot be seen on the overlapping posteroanterior radiographs. The most commonly involved carpal joint was the midcarpal joint (42%). Conclusions: Recognizing carpal abnormalities on radiographs is helpful for the diagnosis of KBD and the evaluation of the severity of the disease. The more severe the KBD, the

  16. The paediatric wrist revisited - findings of bony depressions in healthy children on radiographs compared to MRI

    Energy Technology Data Exchange (ETDEWEB)

    Avenarius, Derk M.F.; Eldevik, Petter [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Ording Mueller, Lil-Sofie [University Hospital North Norway, Department of Radiology, Tromsoe (Norway); Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); Owens, Catherine M. [Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom); University College London, Institute of Child Health, London (United Kingdom); Rosendahl, Karen [Haukeland University Hospital, Department of Radiology, Bergen (Norway); University of Bergen, Department of Surgical Sciences, Bergen (Norway); Great Ormond Street Hospital for Children, Department of Radiology, London (United Kingdom)

    2012-07-15

    The presence of erosions is used for diagnosis and monitoring of disease activity in juvenile idiopathic arthritis (JIA). Assessment of carpal bone erosions in children is challenging due to lack of normal references. To define normal appearances of bony depressions in the wrist on radiographs and MRI. MRI and radiography of the wrist were performed in 88 healthy children, 5-15 years of age. We assessed the number of bony depressions within the carpals/proximal metacarpals on both modalities, separately and combined. A total of 75 carpal depressions were identified on radiography compared to 715 on MRI. The number of bony depressions identified radiographically showed no statistically significant difference across age-groups. Within the metacarpals, there was no significant difference between bony depressions identified by MRI or radiography, except at the bases of the second metacarpal. Bony depressions that resemble erosions are normal findings in the wrist in children. MRI identifies more depressions than radiographs in the carpus. Some bony depressions occur at typical locations and should be accounted for when assessing the wrist in JIA to avoid overstaging. (orig.)

  17. Clinical evolution and radiographic findings of feline heartworm infection in asymptomatic cats.

    Science.gov (United States)

    Venco, L; Genchi, C; Genchi, M; Grandi, G; Kramer, L H

    2008-12-10

    Clinical manifestations of heartworm disease in cats are variable; most cats seem to tolerate the infection well for extended periods. Heartworm-infected cats may undergo spontaneous self-cure due to the natural death of parasites without any symptomatology, or they may suddenly show dramatic and acute symptoms. Sudden death in apparently healthy cats is not a rare event. Thoracic radiographs are important tool for the diagnosis of cardiopulmonary disease. However, thoracic abnormalities are often absent or transient and highly variable in heartworm-infected cats. Findings, such as enlargement of the peripheral branches of the pulmonary arteries, with a varying degree of pulmonary parenchymal disease and hyperinflation, are the most typical features consistent with infection. A field study was performed for cats referred to the Veterinary Hospital Città di Pavia from January 1998 to December 2001 for routine health examinations and procedures to evaluate the clinical evolution and radiographic findings of feline heartworm infection. Thirty-four asymptomatic cats diagnosed with feline heartworm infection by antibody and antigen tests together with an echocardiogram that allowed worm visualization were included in the follow-up study. Cats were routinely examined every 3 months from the time of heartworm diagnosis until the outcome (self-cure or death). Self-cure was defined as no positive serology for heartworm antigens and no visualization of worms by echocardiography. A final examination for antibodies was carried after 12 months as a final confirmation of self-cure. Twenty-eight cats (82.4%) self-cured; including 21 that showed no clinical signs of infection throughout the study. Six cats died. The most common clinical features observed were acute respiratory symptoms and sudden death. Infection lasted over 3 years in the majority of the cats enrolled in the study. Thoracic radiograph appearance was variable, and the most commonly observed findings were focal

  18. Chest CT findings in patients with non-cardiovascular causes of chest pain: Focusing on pulmonary tuberculosis in a tuberculosis endemic country

    Energy Technology Data Exchange (ETDEWEB)

    Lee, So Won; Shim, Sung Shine; Kim, Yoo Kyung; Ryu, Yon Ju [Mokdong Hospital, Ewha Womans University School of Medicine, Seoul (Korea, Republic of)

    2015-10-15

    To review the common causes of non-cardiovascular chest pain (NCCP) according to the location and lesion type as seen on chest CT, and to evaluate CT findings in tuberculosis (TB) as a cause of NCCP. In the period 2009 to 2012, patients having NCCP without definitive evidence of acute myocardial infarction, pulmonary thromboembolism, and aortic dissection, were included. In total, 162 patients (60.5% male; 39.5% female), with a mean age of 51 years, were enrolled. CT images were evaluated by location and lesion type, for causes of NCCP. Chest CT revealed that the most common location for the cause of NCCP was the pleura (45.1%), followed by the subpleural lung parenchyma (30.2%). The most common lesion causing NCCP was TB (33.3%), followed by pneumonia (19.1%). Of the 54 TB cases, 40 (74.1%) were stable TB and 14 (25.9%) were active TB; among these 54 patients, NCCP was most commonly the result of fibrotic pleural thickening (55.6%), followed by subpleural stable pulmonary TB (14.8%). Results of chest CT revealed that TB was a major cause of NCCP in a TB endemic area. Among the TB patients, fibrotic pleural thickening in patients with stable TB was the most common cause of NCCP.

  19. Radiographic superimposition and mandibular peripheral osteoma: the importance of clinical and CT findings.

    Science.gov (United States)

    Boffano, Paolo; Gallesio, Cesare; Roccia, Fabio; Berrone, Sid

    2013-03-01

    Peripheral osteomas are benign, slow-growing osteogenic tumors that are caused by centrifugal growth of the periosteum and develop as masses attached to the cortical plates.The pathogenesis of osteomas is unclear, and embryologic, traumatic, inflammatory, metaplastic, and genetic causes have been proposed. A solitary peripheral osteoma of the jaws is uncommon.The purpose of this paper is to present a peculiar case of mandibular peripheral osteoma with a particular radiographic superimposition that stress the importance of clinical and CT findings.

  20. Asbestos-related radiographic changes by ILO classification of 10 x 10 cm chest X-rays in a screening of the general population.

    Science.gov (United States)

    Hilt, B; Hillerdal, G; Lund-Larsen, P G; Lien, J T; Langård, S

    1995-02-01

    A sample of 1388 10 x 10 cm chest X-rays from a previous population screening of males aged 40+ years were reevaluated by use of the ILO classification. There were 1036 films of subjects from an industrialized town, and 352 from a rural community. The observed rates of parenchymal changes (profusion > or = 1/0) at the reevaluation were 1.3% in the urban community and 3.4% in the rural community. The corresponding figures for pleural changes were 5.0% and 0.6%, respectively. Based on additional questionnaire information on asbestos exposure, it was found that the radiographic changes were probably related to past asbestos exposure for 2.3% of the subjects from the urban community and 0.6% from the rural community. In cases of asbestos-related illnesses the mean time since first exposure to asbestos was 35.9 years, whereas the mean duration of the exposures was 11.4 years. The results seem to indicate that the ILO reassessment of the radiographs was more sensitive in detecting pleural changes than the previous clinical screening of both small and large films.

  1. Management-related outcomes and radiographic findings of idiopathic condylar resorption: a systematic review.

    Science.gov (United States)

    Sansare, K; Raghav, M; Mallya, S M; Karjodkar, F

    2015-02-01

    Idiopathic condylar resorption (ICR) is progressive resorption of the condyle of unknown aetiology. There is no consensus on the approaches for diagnostic imaging and management of this disease. The objective of this systematic review was to examine the best practices for imaging and to appraise the success of surgical and non-surgical therapy of ICR. Eleven search engines were queried via explicit literature searches for studies describing ICR, published until 2012. Two authors independently extracted data using predetermined characteristics. Studies that identified patients as having either ICR or progressive condylar resorption and that described the radiographic findings or treatment options were included. Seventeen studies contributing 178 cases met the eligibility criteria. The major radiographic findings, as assessed mostly by two-dimensional imaging, included decreased ramus height, decreased condylar height, altered volume of the condyle, decreased SNB angle and mandibular plane angle, and a retrognathic profile. Treatments included occlusal splints with orthodontic treatment, condylectomy with costochondral graft, and other surgical approaches. This systematic review was limited by the lack of meta-analysis. Nevertheless, we identified the need for future investigations: characterization of findings on three-dimensional imaging and its contribution to treatment planning, outcomes of non-surgical and pharmacological management of ICR, and randomized trials and comparative studies with longer follow-up periods.

  2. Paired maximum inspiratory and expiratory plain chest radiographs for assessment of airflow limitation in chronic obstructive pulmonary disease

    Energy Technology Data Exchange (ETDEWEB)

    Kinoshita, Takashi, E-mail: tkino@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Kawayama, Tomotaka, E-mail: kawayama_tomotaka@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Imamura, Youhei, E-mail: mamura_youhei@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Sakazaki, Yuki, E-mail: sakazaki@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Hirai, Ryo, E-mail: hirai_ryou@kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Ishii, Hidenobu, E-mail: shii_hidenobu@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Suetomo, Masashi, E-mail: jin_t_f_c@yahoo.co.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Matsunaga, Kazuko, E-mail: kmatsunaga@kouhoukai.or.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Azuma, Koichi, E-mail: azuma@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan); Fujimoto, Kiminori, E-mail: kimichan@med.kurume-u.ac.jp [Department of Radiology, Kurume University School of Medicine, Kurume (Japan); Hoshino, Tomoaki, E-mail: hoshino@med.kurume-u.ac.jp [Division of Respirology, Neurology, and Rheumatology, Department of Medicine, Kurume University School of Medicine, Kurume (Japan)

    2015-04-15

    Highlights: •It is often to use computed tomography (CT) scan for diagnosis of chronic obstructive pulmonary disease. •CT scan is more expensive and higher. •A plane chest radiography more simple and cheap. Moreover, it is useful as detection of pulmonary emphysema, but not airflow limitation. •Our study demonstrated that the maximum inspiratory and expiratory plane chest radiography technique could detect severe airflow limitations. •We believe that the technique is helpful to diagnose the patients with chronic obstructive pulmonary disease. -- Abstract: Background: The usefulness of paired maximum inspiratory and expiratory (I/E) plain chest radiography (pCR) for diagnosis of chronic obstructive pulmonary disease (COPD) is still unclear. Objectives: We examined whether measurement of the I/E ratio using paired I/E pCR could be used for detection of airflow limitation in patients with COPD. Methods: Eighty patients with COPD (GOLD stage I = 23, stage II = 32, stage III = 15, stage IV = 10) and 34 control subjects were enrolled. The I/E ratios of frontal and lateral lung areas, and lung distance between the apex and base on pCR views were analyzed quantitatively. Pulmonary function parameters were measured at the same time. Results: The I/E ratios for the frontal lung area (1.25 ± 0.01), the lateral lung area (1.29 ± 0.01), and the lung distance (1.18 ± 0.01) were significantly (p < 0.05) reduced in COPD patients compared with controls (1.31 ± 0.02 and 1.38 ± 0.02, and 1.22 ± 0.01, respectively). The I/E ratios in frontal and lateral areas, and lung distance were significantly (p < 0.05) reduced in severe (GOLD stage III) and very severe (GOLD stage IV) COPD as compared to control subjects, although the I/E ratios did not differ significantly between severe and very severe COPD. Moreover, the I/E ratios were significantly correlated with pulmonary function parameters. Conclusions: Measurement of I/E ratios on paired I/E pCR is simple and

  3. Clinical and Radiographic Findings and Usefulness of Computed Tomographic Assessment in Two Children with Regional Odontodysplasia

    Directory of Open Access Journals (Sweden)

    Junko Matsuyama

    2014-01-01

    Full Text Available Regional odontodysplasia is a rare, severe, and nonhereditary developmental disorder in tooth formation and involves epithelial and mesenchymal-derived dental tissue. On radiographs, affected teeth have an abnormal morphology, a hypoplastic crown, and only a faint outline of hard tissue, a condition termed “ghost teeth.” We report clinical and radiographic findings from two children with regional odontodysplasia. Using computed tomography (CT, we calculated attenuation coefficients (i.e., Hounsfield units for affected teeth and assessed the condition of dental follicles. To measure density, regions of interest were delimited and CT values were calculated. In our two patients, the CT values for enamel were lower in affected teeth than in sound teeth, while CT values for dentin were similar for affected and sound teeth. The average CT value for dental follicles in affected teeth was about 65 to 120, which suggests that dense fibrous connective tissues or hard tissue-like structures might be present in dental follicles. Analysis of CT values may be quite useful in the diagnosis and treatment of regional odontodysplasia.

  4. Digital chest radiography

    DEFF Research Database (Denmark)

    Debess, Jeanne Elisabeth; Johnsen, Karen Kirstine; Thomsen, Henrik

    2015-01-01

    on collimation and dose reduction in digital chest radiography Methods and Materials A retrospective study of digital chest radiography is performed to evaluate the primary x-ray tube collimation of the PA and lateral radiographs. Data from one hundred fifty self-reliant female patients between 15 and 55 years...... collimations depending on side of radiograph. Results from dose reduction will be presented on the congress Conclusion: Correct positioning and collimation of digital chest radiographs can reduce the radiation dose significant to the patients and by that improve the quality of basic radiography....

  5. Cervical spine in patients with diastrophic dysplasia - radiographic findings in 122 patients

    Energy Technology Data Exchange (ETDEWEB)

    Remes, Ville M.; Helenius, Ilkka J.; Peltonen, Jari I. [Hospital for Children and Adolescents, Helsinki University Central Hospital, P.O. Box 281, 00029 HUS (Finland); Marttinen, Eino J. [Helsinki University Central Hospital (Finland); Poussa, Mikko S. [Orton Orthopaedic Hospital, Helsinki (Finland)

    2002-09-01

    Heading AbstractBackground. In previous studies, typical radiological findings in the cervical spine of patients with diastrophic dysplasia (DD) have been kyphosis, displacement of the vertebrae, spina bifida occulta (SBO), anterior hypoplasia of vertebrae C3-5, and hyperplasia and dysmorphism of the odontoid process.Objectives. To make a radiological analysis of the cervical spine in patients with DD.Materials and methods. The study comprised 122 patients (50 males, 72 females), with an average age of 19 years (range newborn-63 years). Follow-up was available on 62 patients (51%), for an average duration of 11 years. Cervical spine alignment was measured according to Cobb's method. The height (H) and depth (D) of the vertebral body and sagittal diameter (S) of the spinal canal were measured. H/D and S/D ratios were then calculated from the measurements. The shape of the vertebrae was assessed. Displacement and movement of cervical vertebrae in neutral and bending radiographs were measured.Results. The average lordosis in the last radiograph was 17 (range 4 -55 ). Five (4%) patients had a cervical kyphosis with an average of 92 (range 10-165 ) on their last radiograph. The H/D ratio increased slowly during growth and showed significant correlation with age. There was no growth spurt at puberty. The S/D ratio was fairly stable until 7-8 years of age, when it started to decline slowly. The percentage of vertebrae with a flat vertebral body and narrow spinal canal value tended to increase with age. Vertebral hypoplasia and displacement between vertebrae were most common in the mid-cervical region and resolved spontaneously with age. Degenerative changes seemed to increase with age and were already visible during the second decade of life. SBO was noted in 79% of patients.Conclusions. The most common alignment in the cervical spine is lordosis in adulthood. The vertebral bodies are flattened and the spinal canal is narrowed. Vertebral body hypoplasia and

  6. Chest trauma in children: current imaging guidelines and techniques.

    LENUS (Irish Health Repository)

    Moore, Michael A

    2011-09-01

    Given the heterogeneous nature of pediatric chest trauma, the optimal imaging approach is tailored to the specific patient. Chest radiography remains the most important imaging modality for initial triage. The decision to perform a chest computed tomography scan should be based on the nature of the trauma, the child\\'s clinical condition, and the initial radiographic findings, taking the age-related pretest probabilities of serious injury into account. The principles of as low as reasonably achievable and Image Gently should be followed. The epidemiology and pathophysiology, imaging techniques, characteristic findings, and evidence-based algorithms for pediatric chest trauma are discussed.

  7. Bedside chest radiography of novel influenza A (H7N9) virus infections and follow-up findings after short-time treatment

    Institute of Scientific and Technical Information of China (English)

    SONG Feng-xiang; ZHOU Jun; SHI Yu-xin; ZHANG Zhi-yong; FENG Feng; ZHOU Jian-jun; WANG Qing-le

    2013-01-01

    Background Influenza A (H7Ng) virus infections were first observed in China in March 2013.This type virus can cause severe illness and deaths,the situation raises many urgent questions and global public health concerns.Our purpose was to investigate bedside chest radiography findings for patients with novel influenza A (H7Ng) virus infections and the followup appearances after short-time treatment.Methods Eight hospitalized patients infected with the novel influenza A (H7Ng) virus were included in our study.All of the patients underwent bedside chest radiography after admission,and all had follow-up bedside chest radiography during their first ten days,using AXIOM Aristos MX and/or AMX-Ⅳ portable X-ray units.The exposure dose was generally 90 kV and 5 mAs,and was slightly adjusted according to the weight of the patients.The initial radiography data were evaluated for radiological patterns (ground glass opacity,consolidation,and reticulation),distribution type (focal,multifocal,and diffuse),lung zones involved,and appearance at follow-up while the patients underwent therapy.Results All patients presented with bilateral multiple lung involvement.Two patients had bilateral diffuse lesions,three patients had unilateral diffuse lesions of the right lobe with multifocal lesions of the left lobe,and the remaining three had bilateral multifocal lung lesions.The lesions were present throughout bilateral lung zones in three patients,the whole right lung zone in three patients with additional involvement in the left middle and/or lower lung zone(s),both lower and middle lung zones in one patient,and the right middle and lower in combination with the left lower lung zones in one patient.The most common abnormal radiographic patterns were ground glass opacity (8/8),and consolidation (8/8).In three cases examined by CT we also found the pattern of reticulation in combination with CT images.Four patients had bilateral and four had unilateral pleural effusion.After a short

  8. Initial periodontal screening and radiographic findings - A comparison of two methods to evaluate the periodontal situation

    Directory of Open Access Journals (Sweden)

    Hornecker Else

    2011-01-01

    Full Text Available Abstract Background The periodontal screening index (PSI is an element of the initial dental examination. The PSI provides information on the periodontal situation and allows a first estimation of the treatment required. The dental panoramic tomography (DPT indicates the proximal bone loss, thus also allowing conclusions on the periodontal situation. In this study, the results of both methods in determining the periodontal situation are compared. Methods The clinical examination covered DMF-T, QHI, and PSI scores at four proximal sites per tooth; the examining dentist was unaware of the radiographic finding. Based on the PSI scores, the findings were diagnosed as follows: score 0 - 2 "no periodontitis", score 3 and 4 "periodontitis". Independent of the locality and time of the clinical evaluation, two dentists examined the DPTs of the subjects. The results were classified as follows: no bone loss = "no periodontitis", and bone loss = "periodontitis". Results 112 male subjects (age 18 to 58, Ø 37.7 ± 8 years were examined. Regarding the PSI, 17 subjects were diagnosed "no periodontitis" and 95 subjects "periodontitis". According to the evaluation of the DPTs, 70 subjects were diagnosed "no periodontitis" and 42 "periodontitis". A comparison of both methods revealed that the diagnosis "no periodontitis" corresponded in 17 cases and "periodontitis" in 42 cases (53%. In 47% (53 cases the results were not congruent. The difference between both methods was statistically significant (p Conclusion The present study shows that the initial assessment of the periodontal situation significantly depends on the method of evaluation.

  9. Chest radiography and thoracic computed tomography findings in children who have family members with active pulmonary tuberculosis

    Energy Technology Data Exchange (ETDEWEB)

    Uzum, Kazim; Karahan, Okkes I.; Dogan, Sukru; Coskun, Abdulhakim E-mail: coskuna@erciyes.edu.tr; Topcu, Faik

    2003-12-01

    Objective: The chest radiography and TCT findings in children who had contacted with adult family members with active pulmonary tuberculosis were compared. The contributions of thoracic computed tomography to the diagnosis of tuberculosis were investigated. Methods and material: The children who were 0-16 years old (n=173) and children of families with an adult member which was diagnosed as pulmonary tuberculosis were evaluated. The children were considered in two groups based on the absence (n=125) or presence (n=48) of complaints and/or ambiguous symptoms such as lack of appetite, mild cough, sweating, history of lung infection, low body weight and those with suspicious chest radiography findings (12 cases) were included in this study. Asymptomatic patients (n=125) did not undergo TCT. Patients who had positive PPD skin tests only received isoniazid. If the TCT demonstrated enlarged lymph nodes or parenchymal lesions, minimally active pulmonary tuberculosis was diagnosed and antituberculous treatment was given. Results and discussions: TCT revealed lymph node enlargement or parenchymal lesions in 39 children (81.2%). Of the 12 children whose CXRs revealed suspicious lymph node enlargement and/or infiltration, five had normal findings in TCT whereas the initial findings were confirmed in the remaining seven. These data suggest that there is a correlation between the presence of ambiguous symptoms in exposed children and TCT findings; chest radiography and TCT findings do not yield parallel findings. All the patients who received anti-TB treatment were resolved in the control examinations. Conclusion: In this study there is a correlation between presence of ambiguous symptoms and TCT findings, but the chest radiography and TCT findings do not yield harmony in exposed children with ambiguous symptoms (suspicious tuberculosis cases). These observations should be considered in children with symptoms similar to those of exposed children, but with no definite history of

  10. Two cases of pediatric bone disease (eosinophilic granuloma and Brodie's abscess) showing similar scintigraphic and radiographic findings.

    Science.gov (United States)

    Yoshikawa, M; Sugawara, Y; Kikuchi, T; Nakata, S; Mochizuki, T; Ikezoe, J; Sakayama, K

    2000-12-01

    Two 9-year-old patients with femoral bone lesions were referred to the authors' institution within a few days of each other. Both showed similar radiographic, magnetic resonance imaging, and scintigraphic findings. The radiographs showed osteolytic lesions in the right femoral diaphyses, and gadolinium-DTPA-enhanced magnetic resonance imaging revealed inhomogeneous enhancement. Tc-99m HMDP showed marked linear accumulation with relatively low central uptake in the right femoral shafts, and TI-201 scintigraphy showed considerable uptake corresponding to the area seen with Tc-99m HMDP. Histologic analysis confirmed eosinophilic granuloma in the first patient and Brodie's abscess in the second. The radiographic and scintigraphic findings in Brodie's abscess may be similar to those in eosinophilic granuloma.

  11. Spontaneous Crenosoma vulpis infection in 10 dogs: laboratory, radiographic and endoscopic findings.

    Science.gov (United States)

    Unterer, S; Deplazes, P; Arnold, P; Flückiger, M; Reusch, C E; Glaus, T M

    2002-04-01

    Crenosoma (C.) vulpis infection was diagnosed in 10 dogs aged between 0.5 and 12 years (median 4 years) during a 4-year period. The predominant clinical sign in all dogs was coughing which lasted from 1 day to > 4 months. Hematological abnormalities included eosinophilia in 5/9 dogs, basophilia in 3/9 dogs, and mild monocytosis in 6/9 dogs. Thoracic radiographs (n = 9) were normal in 1 dog, showed a mild bronchial or interstitial pattern in 4 dogs, and moderate to marked changes (bronchial-interstitial to alveolar) in 4 dogs. Endoscopic findings (n = 9) varied from mild erythematous bronchitis (n = 3) to marked bronchitis with accumulation of large amounts of mucus (n = 2), irregular nodular mucosal surface (n = 2), accumulation of pus (n = 1), and bronchial hemorrhage (n = 1). Adult worms were observed in 2 dogs. Bronchial lavage cytology revealed inflammation with predominance of eosinophils in 7/10 dogs, eosinophils and neutrophils in 2/10 dogs, and neutrophils in 1/10 dogs. C. vulpis larvae were identified in the BAL of 5/10 dogs. Fecal examinations with the Baermann technique was the most sensitive method and positive in all 10 dogs. C. vulpis infection has to be considered in the differential diagnosis in dogs of all ages presenting with acute or chronic cough.

  12. Correlation between clinical and radiographic findings on the occurrence of furcation involvement in patients with periodontitis

    Directory of Open Access Journals (Sweden)

    Estela Santos Gusmão

    2014-01-01

    Conclusion: Taking into consideration the method employed and the results obtained, it may be concluded that the clinical and radiographic examinations performed are effective tools for diagnosing furcation involvement in teeth affected with periodontal disease.

  13. Pulmonary edema: radiographic differential diagnosis

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Dong Soo; Choi, Young Hi; Kim, Seung Cheol; An, Ji Hyun; Lee, Jee Young; Park, Hee Hong [Dankook Univ. College of Medicine, Chonan (Korea, Republic of)

    1997-04-01

    To evaluate the feasibility of using chest radiography to differentiate between three different etiologies of pulmonary edema. Plain chest radiographs of 77 patients, who were clinically confirmed as having pulmonary edema, were retrospectively reviewed. The patients were classified into three groups : group 1 (cardiogenic edema : n = 35), group 2 (renal pulmonary edema : n = 16) and group 3 (permeability edema : n = 26). We analyzed the radiologic findings of air bronchogram, heart size, peribronchial cuffing, septal line, pleural effusion, vascular pedicle width, pulmonary blood flow distribution and distribution of pulmonary edema. In a search for radiologic findings which would help in the differentiation of these three etiologies, each finding was assessed. Cardiogenic and renal pulmonary edema showed overlapping radiologic findings, except for pulmonary blood flow distribution. In cardiogenic pulmonary edema (n=35), cardiomegaly (n=29), peribronchial cuffing (n=29), inverted pulmonary blood flow distribution (n=21) and basal distribution of edema (n=20) were common. In renal pulmonary edema (n=16), cardiomegaly (n=15), balanced blood flow distribution (n=12), and central (n=9) or basal distribution of edema (n=7) were common. Permeability edema (n=26) showed different findings. Air bronchogram (n=25), normal blood flow distribution (n=14) and peripheral distribution of edema (n=21) were frequent findings, while cardiomegaly (n=7), peribronchial cuffing (n=7) and septal line (n=5) were observed in only a few cases. On plain chest radiograph, permeability edema can be differentiated from cardiogenic or renal pulmonary edema. The radiographic findings which most reliably differentiated these two etiologies were air bronchogram, distribution of pulmonary edema, peribronchial cuffing and heart size. Only blood flow distribution was useful for radiographic differentiation of cardiogenic and renal edema.

  14. Clinical, radiographic, and histological findings of florid cemento-osseous dysplasia: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jeong Hee; Song, Byeong Chul; Kimn, Sun Ho; Park, Yang Soon [Seoul Veterans Hospital, Seoul (Korea, Republic of)

    2011-09-15

    Cemento-osseous dysplasias are a group of disorders known to originate from periodontal ligament tissue and involve, essentially, the same pathological process. They are usually classified into three main groups: periapical, florid, and focal cemental dysplasias depending on their extent and radiographic appearances. Radiographically, florid cementoosseous dysplasia (FCOD) appears as dense, lobulated masses, often symmetrically located in various regions of the jaws. The best management for the asymptomatic FCOD patient consists of regular recall examinations with prophylaxis. The management of the symptomatic patient is more difficult. A case of FCOD occurring in a 52-year-old edentulous Korean female is reported which is rare with regard to race and sex.

  15. Congenital left ventricular diverticulum, a rare chest fluoroscopy finding: a case report

    Institute of Scientific and Technical Information of China (English)

    WANG Zhi-wei; WU Hong-bing; MAO Zhi-fu; HU Xiao-ping

    2011-01-01

    Congenital left ventricular diverticulum is a very rare cardiac abnormality and it is not completely understood about its etiology, clinical manifestation, diagnosis, treatment and prognosis. This article presents a case of large congenital diverticulum of the left ventricle. The clinical manifestation included paroxysmal supraventricular tachycardia. The diagnosis was made by chest fluoroscopy observation and confirmed by 64-slice CT-angiography. The arrhythmia alleviated instead of antiarrhythmic drugs but by radiofrequency catheter ablation. Due to the rapid growth of the diverticulum, the patient underwent surgical resection finally. Owing to the fatal risks, clinicians should improve the understanding of this disease by deeply studying more cases, in order to standardize the treatment.

  16. Ankylosing spondylitis complicated by trauma: MR findings correlated with plain radiographs and CT

    Energy Technology Data Exchange (ETDEWEB)

    Goldberg, A.L. (Dept. of Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA (United States) Medical Coll. of Pennsylvania, Pittsburgh, PA (United States)); Keaton, N.L. (Dept. of Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA (United States) Medical Coll. of Pennsylvania, Pittsburgh, PA (United States)); Rothfus, W.E. (Dept. of Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA (United States) Medical Coll. of Pennsylvania, Pittsburgh, PA (United States)); Daffner, R.H. (Dept. of Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA (United States) Medical Coll. of Pennsylvania, Pittsburgh, PA (United States))

    1993-01-01

    Four patients with ankylosing spondylitis sustained a traumatic spinal injury. In three cases, pseudoarthrosis developed at the discovertebral junction, while involvement of the neural arch occurred in the fourth. Although the diagnosis of ankylosing spondylitis was readily established on plain radiographs, magnetic resonance more effectively indentified the complicating injury and in two cases demonstrated the presence of cord compression. Computed tomography was also contributory in delineating bony and ligamentous abnormalities of the neural arch. (orig.)

  17. Correlation of macroscopic osteoarthrotic changes and radiographic findings in the acromioclavicular joint

    Energy Technology Data Exchange (ETDEWEB)

    Stenlund, B.; Marions, O.; Engstroem, K.F.; Goldie, I.

    In a total of 108 acromioclavicular articulations from cadavers the osteoarthrotic changes were studied. The articulations were macroscopically and radiographically ranked according to their grade of osteoarthrosis. The two ranking lines were correlated statistically and showed a rank correlation of 0.741. In 38 articulations tomography was also carried out. These articulations were classified into five grades of osteoarthrosis and the macroscopic, conventional radiographic and tomographic gradings were compared. The correlation coefficient for tomography versus macroscopy was 0.714. Tomography versus standard radiography showed a correlation of 0.767 and standard radiography versus macroscopy a correlation of 0.841. The standard radiographic investigation reveals moderate and severe osteoarthrotic changes in the acromioclavicular joint but cannot depict smaller changes. Tomography does not seem to improve the specificity. There is a need for a better radiologic technique in the examination of the acromioclavicular joint. Radiography during some kind of loading might be a practical way of improving the specificity and make it possible to show early osteoarthrosis in the acromioclavicular articulation.

  18. Estimation of entrance dose on chest radiographs according to the exposure index on Computerized Radiology System: preliminary results; Estimativa de dose de entrada a partir do indice de exposicao em sistema CR: resultados preliminares

    Energy Technology Data Exchange (ETDEWEB)

    Donomai, Luana Kaoru; Jornada, Tiago da Silva; Daros, Kellen Adriana Curci, E-mail: luana.donomai@gmail.com, E-mail: tiagosjornada@gmail.com, E-mail: daros.kellen@unifesp.br [Universidade Federal de Sao Paulo (UNIFESP), Sao Paulo, SP (Brazil)

    2014-07-01

    Digital radiology has improved image quality in radiographs in comparison to screen/film systems though the visual control of the quantity of radiation involved on these exams became more demanding due to the low perception of over and underexposed images. Therefore, this study aims to analyze the exposure index (EI) from chest examinations and relate them to the entrance skin dose. Indices from 29 patients and kerma entrance dose were correlated. A correlation coefficient equal to 0,6881 was calculated. EI and entrance dose are correlated positive and moderately, indicating the relevance to deepen the subject. (author)

  19. Digital platform for improving non-radiologists' and radiologists' interpretation of chest radiographs for suspected tuberculosis - a method for supporting task-shifting in developing countries

    Energy Technology Data Exchange (ETDEWEB)

    Semakula-Katende, Namakula S.; Lucas, Susan [University of the Witwatersrand, Department of Radiology, Faculty of Health Sciences, Witwatersrand (South Africa); Andronikou, Savvas [University of Bristol, Department of Radiology/CRIC Bristol, Bristol (United Kingdom); Bristol Royal Hospital for Children, Department of Radiology, Bristol (United Kingdom)

    2016-09-15

    Shifting X-ray interpretation to non-radiologists can help to address radiologist shortages in developing countries. To determine the change in accuracy of non-radiologists and radiologists for the radiographic diagnosis of paediatric tuberculosis after a short skill-development course. Participants interpreted 15 paediatric chest radiographs before and after a 30-minute course using three possible responses: (1) diagnostic for tuberculosis, (2) abnormal but inconclusive for diagnosis of tuberculosis and (3) normal. We compared proportions of correct diagnoses, sensitivity, and specificity, before and after the course. We included 256 participants comprising 229 non-radiologists (134 radiographers, 32 paediatricians, 39 Medecins Sans Frontieres clinicians and 24 physicians including paediatricians) and 27 radiologists. Mean change proportions of correct diagnosis ranged from -27% to 53% for individuals and 9% to 20% for groups. All groups showed a statistically significant improvement. Mean change in diagnostic sensitivity ranged from -38% to 100% for individuals and from 16% to 41% for groups. All groups showed a statistically significant improvement. Mean change in specificity ranged from -57% to 57% for individuals and from -15% to -4% for groups. The decrease was statistically significant for physicians, paediatricians and radiographers. The course resulted in increased correct diagnoses and improved sensitivity at the expense of specificity. (orig.)

  20. A comparison of MRI, radiographic and clinical findings of the position of the TMJ articular disc following open treatment of condylar neck fractures.

    Science.gov (United States)

    Schneider, Alexander; Zahnert, Diana; Klengel, Steffen; Loukota, Richard; Eckelt, Uwe

    2007-10-01

    We examined the position and function of the articular disc after open treatment of condylar fractures by comparing magnetic resonance images (MRI) and radiographs with clinical data. MRI and radiographs were taken after treatment of 28 patients with 33 fractures of the mandibular condyles. In all cases, the disc was located in the fossa after open reduction and internal fixation (ORIF). The MRI, radiographic and clinical findings did not correlate, and damage to the temporomandibular joint (TMJ) could be seen more clearly on MRI than on clinical or radiographic examination. Damage to soft tissues seen on MRI after treatment was more pronounced in dislocated than in displaced fractures.

  1. Characteristic plain radiographic and intravenous urographic findings of bladder calculi formed over a hair nidus: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hak Jong; Kim, Seung Hyup [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    2000-03-01

    We present the characteristic plain radiographic and intravenous urographic (IVU) findings of calculus formed over a hair. A 66-year-old man who had been quadriplegic for 40 years because of vertebral injury was admitted for further evaluation of frequent urinary tract infection. Plain radiography showed a linear, serpiginous calcification in the lower abdomen, and IVU revealed a round filling defect with linear radiopacity in the bladder, suggesting calculus. The gross appearance of the stone after extraction demonstrated that calcification had formed over a hair.

  2. Pediatric chest CT after trauma: impact on surgical and clinical management

    Energy Technology Data Exchange (ETDEWEB)

    Patel, Rina P. [Vanderbilt University School of Medicine, Nashville, TN (United States); Hernanz-Schulman, Marta; Hilmes, Melissa A.; Kan, J.H. [Vanderbilt University, Department of Radiology and Radiological Sciences, Vanderbilt Children' s Hospital, Nashville, TN (United States); Yu, Chang [Vanderbilt University, Department of Biostatistics, Nashville, TN (United States); Ray, Jackie [Vanderbilt University, Department of Pediatric Surgery, Vanderbilt Children' s Hospital, Nashville, TN (United States)

    2010-07-15

    Chest CT after pediatric trauma is frequently performed but its clinical impact, particularly with respect to surgical intervention, has not been adequately evaluated. To assess the impact of chest CT compared with chest radiography on pediatric trauma management. Two hundred thirty-five consecutive pediatric trauma patients who had both chest CT and radiography were identified. Images were reviewed and findings were categorized and correlated with subsequent chest interventions, blinded to final outcome and management. Of the 235 children, 38.3% (90/235) had an abnormal chest radiograph and 63.8% (150/235) had an abnormal chest CT (P < 0.0001). Chest interventions followed in 4.7% (11/235); of these, the findings could be made 1 cm above the dome of the liver in 91% (10/11). Findings requiring chest intervention included pneumothorax (PTX) and vertebral fractures. PTX was found on 2.1% (5/235) of chest radiographs and 20.0% (47/235) of chest CTs (P < 0.0001); 1.7% (4/235) of the children received a chest tube for PTX, 0.85% (2/235) seen on chest CT only. Vertebral fractures were present in 3.8% of the children (9/235) and 66.7% (6/9) of those cases were treated with spinal fusion or brace. There were no instances of mediastinal vascular injury. Most intrathoracic findings requiring surgical management in our population were identified in the lower chest and would be included in routine abdominopelvic CT exams; this information needs to be taken into consideration in the diagnostic algorithm of pediatric trauma patients. (orig.)

  3. Unrequested imaging findings on routine chest CT : results from the PROVIDI study

    NARCIS (Netherlands)

    Gondrie, M.J.A.

    2011-01-01

    Prognostic research is of growing importance. However, rarely are results from imaging techniques considered for medical prognostication, whilst prognostically promising unrequested imaging findings are increasingly being detected in daily routine care. Therefore this thesis aimed to contribute to t

  4. Acute chest pain in emergency room. Preliminary findings with 40-64-slice CT ECG-gated of the whole chest.

    Science.gov (United States)

    Coche, E

    2007-01-01

    ECG-gated MDCT of the entire chest represents the latest technical advance in the diagnostic work-up of atypical chest pain. The authors report their preliminary experience with the use of 40 and 64-slice CT in the emergency room and recommend to study only patients with moderate likelihood of coronary artery disease. ECG-gated MDCT of the entire chest will be preferentially performed on 64-slice MDCT rather than 40-slice MDCT because it enable to reduce the scan time (18 seconds versus 28 seconds acquisition time), the volume of contrast medium (82 mL + 15 mL versus 97 mL + 15 mL of highly concentrated contrast agent for a patient of 70 kgs) and radiation exposure (17 mSv versus 19 mSv). Approximately 1500 to 2000 of images are produced and need to be analysed on a dedicated workstation by a radiologist expert in cardiac and thoracic disorders. At the present time, only a few studies exist in the literature showing some promising results but further large clinical studies are needed before to implement such sophisticated protocol in emergency room.

  5. Radiological findings of chest in patients with H7N9 avian influenza from a hospital

    Directory of Open Access Journals (Sweden)

    Huanjie Ma

    2015-12-01

    Conclusion: With the right lower lobe prominence, the main abnormal findings in H7N9 pneumonia include rapidly progressive GGOs, consolidations with air bronchograms, and pleural effusion. CT imaging may provide a more accurate assessment of the lung pathology with H7N9 avian influenza, helping the early diagnosis and monitoring its progression.

  6. Practical measurement of radiation dose in pediatric radiology: use of the dose-area product on digital fluoroscopy and neonatal chest radiographs; Mesure pratique de l'irradiation en radiopediatrie: utilisation du produit dose surface en fluorographie numerique et pour les radiographies pulmonaires neonatales

    Energy Technology Data Exchange (ETDEWEB)

    Chateil, J.F.; Rouby, C.; Brun, M.; Labessan, C.; Diard, F. [Hopital Pellegrin, Unite de Radiopediatrie A., 33 - Bordeaux (France)

    2004-05-01

    Purpose. Control of radiation dose in pediatric radiology requires knowledge of the reference levels for all examinations. These data are useful for daily quality assessment, but are not perfectly known for some radiographic examinations. The purpose of our study was to evaluate the dose related to voiding cysto-urethrograms (VCUG), upper GI (UGI) and intravenous urography (IVU). Neonatal chest radiographs in the intensive care unit were also evaluated. Material and methods. For examinations with contrast material (478VCUG, 220UGI, 80IVU), the children were divided in groups based on their weight, from 5 to 30 Kg. Measurements were performed using an ionization chamber and expressed with the-dose-area product (DAP). For chest radiographs, a direct measurement of the entrance-skin dose was performed, with secondary calculation of the DAP. Results. For-VCUGs, the DAP ranged between 42.89 cGy.cm{sup 2} and 125.41 cGy.cm{sup 2}. The range was between 76.43, and 150.62 cGy.cm{sup 2} for UGIs and between 49.06 and 83.33 cGy.cm{sup 2} for IVUs. For neonate chest radiographs, DAP calculations were between 0.29 and 0.99 cGy.cm{sup 2}. Conclusion. These values represent our reference doses. They allow continuous monitoring of our radiographic technical parameters and radiographic equipment and help to correct and improve them if necessary. (author)

  7. Can chest high-resolution computed tomography findings diagnose pulmonary alveolar microlithiasis?

    Energy Technology Data Exchange (ETDEWEB)

    Francisco, Flavia Angelica Ferreira; Rodrigues, Rosana Souza; Barreto, Miriam Menna; Zanetti, Glaucia [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil); Escuissato, Dante Luiz [Universidade Federal do Parana (UFPR), Curitiba, PR (Brazil); Araujo Neto, Cesar Augusto [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Medicina e Apoio Diagnostico; Silva, Claudio S. [Radiology Department, Facultad de Medicina Clinica Alemana, Universidad del Desarrollo, Santiago (Chile); Hochhegger, Bruno [Universidade Federal de Ciencias da Saude de Porto Alegre (UFCSPA), Porto Alegre, RS (Brazil); Marchiori, Edson, E-mail: edmarchiori@gmail.com [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2015-07-15

    Objective: the present study was aimed at retrospectively reviewing high-resolution computed tomography (HRCT) findings in patients with pulmonary alveolar microlithiasis in order to evaluate the frequency of tomographic findings and their distribution in the lung parenchyma. Materials and methods: thirteen patients (9 females and 4 males; age, 9 to 59 years; mean age, 34.5 years) were included in the present study. The HRCT images were independently evaluated by two observers whose decisions were made by consensus. The inclusion criterion was the presence of abnormalities typical of pulmonary alveolar microlithiasis at HRCT, which precludes lung biopsy. However, in 6 cases lung biopsy was performed. Results: ground-glass opacities and small parenchymal nodules were the predominant tomographic findings, present in 100% of cases, followed by small subpleural nodules (92.3%), subpleural cysts (84.6%), subpleural linear calcifications (69.2%), crazy-paving pattern (69.2%), fissure nodularity (53.8%), calcification along interlobular septa (46.2%) and dense consolidation (46.2%). Conclusion: as regards distribution of the lesions, there was preferential involvement of the lower third of the lungs. No predominance of distribution in axial and anteroposterior directions was observed. (author)

  8. The Effect of Low CD4+ Lymphocyte Count on the Radiographic Patterns of HIV Patients with Pulmonary Tuberculosis among Nigerians.

    Science.gov (United States)

    Affusim, Christopher; Abah, Vivien; Kesieme, Emeka B; Anyanwu, Kester; Salami, Taofik A T; Eifediyi, Reuben

    2013-01-01

    Objective. To assess the radiographic features in patients with Human Immunodeficiency Virus (HIV) complicated by pulmonary tuberculosis (PTB), and the association with CD4 lymphocyte count and sputum smear. Method. A prospective study was carried out on 89 HIV positive patients with PTB. The demographics, smoking history, sputum smear result, chest radiographic findings and CD4 lymphocyte count were documented. Results. Out of the 89 patients recruited in the study, 41 were males and 48 were females. Eighteen (18) patients had typical radiographic features, 60 patients had atypical radiographic features while only 11 of them had normal radiographic films. Sixty eight (68) patients had CD4 count HIV) complicated by pulmonary tuberculosis.

  9. Pulmonary infection caused by Mycobacterium kansasii: findings on computed tomography of the chest

    Energy Technology Data Exchange (ETDEWEB)

    Mogami, Roberto; Lopes, Agnaldo Jose; Marca, Patricia Gomes Cytrangulo de, E-mail: agnaldolopes.uerj@gmail.com [Universidade do Estado do Rio de Janeiro (UERJ), RJ (Brazil); Goldenberg, Telma; Mello, Fernanda Carvalho de Queiroz [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil)

    2016-07-15

    Objective: To describe the main tomography findings in patients diagnosed with pulmonary infection caused by Mycobacterium kansasii. Materials and Methods: Retrospective study of computed tomography scans of 19 patients with pulmonary infection by M. kansasii. Results: Of the 19 patients evaluated, 10 (52.6%) were male and 9 (47.4%) were female. The mean age of the patients was 58 years (range, 33-76 years). Computed tomography findings were as follows: architectural distortion, in 17 patients (89.5%); reticular opacities and bronchiectasis, in 16 (84.2%); cavities, in 14 (73.7%); centrilobular nodules, in 13 (68.4%); small consolidations, in 10 (52.6%); atelectasis and large consolidations, in 9 (47.4%); subpleural blebs and emphysema, in 6 (31.6%); and adenopathy, in 1 (5.3%). Conclusion: There was a predominance of cavities, as well as of involvement of the small and large airways. The airway disease was characterized by bronchiectasis and bronchiolitis presenting as centrilobular nodules. (author)

  10. Pulmonary infection caused by Mycobacterium kansasii: findings on computed tomography of the chest*

    Science.gov (United States)

    Mogami, Roberto; Goldenberg, Telma; de Marca, Patricia Gomes Cytrangulo; Mello, Fernanda Carvalho de Queiroz; Lopes, Agnaldo José

    2016-01-01

    Objective To describe the main tomography findings in patients diagnosed with pulmonary infection caused by Mycobacterium kansasii. Materials and Methods Retrospective study of computed tomography scans of 19 patients with pulmonary infection by M. kansasii. Results Of the 19 patients evaluated, 10 (52.6%) were male and 9 (47.4%) were female. The mean age of the patients was 58 years (range, 33-76 years). Computed tomography findings were as follows: architectural distortion, in 17 patients (89.5%); reticular opacities and bronchiectasis, in 16 (84.2%); cavities, in 14 (73.7%); centrilobular nodules, in 13 (68.4%); small consolidations, in 10 (52.6%); atelectasis and large consolidations, in 9 (47.4%); subpleural blebs and emphysema, in 6 (31.6%); and adenopathy, in 1 (5.3%). Conclusion There was a predominance of cavities, as well as of involvement of the small and large airways. The airway disease was characterized by bronchiectasis and bronchiolitis presenting as centrilobular nodules. PMID:27777472

  11. Mediastinal hemorrhage: An evaluation of radiographic manifestations

    Energy Technology Data Exchange (ETDEWEB)

    Woodring, J.H.; Loh, F.K.; Kryscio, R.J.

    1984-04-01

    Eleven common radiographic signs of mediastinal hemorrhage were evaluated by two observers for the following three patient groups: normal subjects, patients with mediastinal hemorrhage and no arterial injury, and patients with major thoracic arterial injury. Supine chest radiographs were studied in all cases. Four major conclusions can be made based upon these finding. M/C ratio (mediastinal width to chest width), tracheal deviation, left hemothorax, paraspinal line widening, and aorto-pulmonary window opacification do not reliably separate these three groups of patients. The diagnosis of mediastinal hemorrhage may be made if the aortic contour is abnormal or if one of the following signs is positive: abnormal mediastinal width, apical cap, widening of the right paratracheal stripe, or deviation of the nasogastric tube. Due to interobserver variation, there is good agreement between observers for the following four signs only: transverse mediastinal width, tracheal deviation, nasogastric tube deviation, nasogastric tube deviation, and right paratracheal stripe widening.

  12. Plain abdominal radiographs in patients with Crohn's disease: Radiological findings and diagnostic value

    Energy Technology Data Exchange (ETDEWEB)

    O' Regan, K.; O' Connor, O.J.; O' Neill, S.B.; Mc Laughlin, P.D. [Department of Radiology, Cork University Hospital and University College Cork, Cork (Ireland); Desmond, A. [Department of Medicine (Gastroenterology), Cork University Hospital and University College Cork, Cork (Ireland); McWilliams, S.R. [Department of Radiology, Cork University Hospital and University College Cork, Cork (Ireland); Quigley, E.M.M.; Shanahan, F. [Department of Medicine (Gastroenterology), Cork University Hospital and University College Cork, Cork (Ireland); Maher, M.M., E-mail: M.Maher@ucc.ie [Department of Radiology, Cork University Hospital and University College Cork, Cork (Ireland)

    2012-08-15

    Aim: To determine the diagnostic yield and clinical value of plain film of the abdomen (PFA) in Crohn's disease (CD) patients and to determine whether performance of PFA yields definitive diagnostic information or whether additional imaging examinations are required. Materials and methods: One hundred and seventy-seven CD patients underwent 643 PFAs during the period September 1992 to August 2008. Two radiologists blinded to the clinical details independently evaluated individual PFAs and/or their reports for abnormal findings using the following criteria: normal, small bowel (SB) findings; colonic findings, acute CD complications, extra-colonic findings; global assessment/impression. The results of additional imaging studies performed within 5 days of PFA were recorded and findings were analysed. Results: A mean of 3.6 (range 1-22) PFAs was performed per patient during the study period. Almost 70% of films were normal (n = 449). SB abnormalities were detected in 21.8% (n = 140) PFAs; most commonly dilated loops (18.8%, n = 121) and mucosal oedema (5%, n = 32). Colonic abnormalities were present in 11.4% (n = 73); most commonly mucosal oedema (7.5%, n = 48) and dilated loops (5%, n = 32). Four cases of pneumoperitoneum were detected. There was no case of toxic megacolon. There was one case in which intra-abdominal abscess/collection was suspected and two cases of obstruction/ileus. Extracolonic findings (renal calculi, sacro-iliitis, etc.) were identified in 7.5% (n = 48). PFAs were followed by additional abdominal imaging within 5 days of PFA in 273/643 (42.5%) of cases. Conclusion: Despite the high rates of utilization of PFA in CD patients, there is a low incidence of abnormal findings (32.5%). Many of the findings are non-specific and clinically irrelevant and PFA is frequently followed by additional abdominal imaging examinations.

  13. Novel influenza A (H1N1) infection: chest CT findings from 21 cases in Seoul, Korea

    Energy Technology Data Exchange (ETDEWEB)

    Shim, S.S., E-mail: sinisim@ewha.ac.k [Department of Diagnostic Radiology and Center for Imaging Science, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul (Korea, Republic of); Kim, Y. [Department of Diagnostic Radiology and Center for Imaging Science, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul (Korea, Republic of); Ryu, Y.J. [Division of Pulmonary and Critical care medicine, Department of Internal Medicine, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul (Korea, Republic of)

    2011-02-15

    Aim: To retrospectively evaluate the computed tomography (CT) appearances of novel influenza A (H1N1) infection. Materials and methods: Chest CT images obtained at clinical presentation in 21 patients (eight men, 13 women; mean age, 37 years; age range, 6-82 years) with confirmed novel influenza A (H1N1) infection were assessed. The radiological appearances of pulmonary parenchymal abnormalities, distribution, and extent of involvement on initial chest CT images were documented. The study group was divided on the basis of age [group 1, patients <18 years old (n = 8); group 2, patients {>=}18 years old (n = 13)]. Medical records were reviewed for underlying medical conditions and laboratory findings. The occurrence of recognizable CT patterns was compared for each group using the images from the initial CT examination. Results: The most common CT pattern observed in all patients was ground-glass attenuated (GGA) lesions (20/21, 95%). Bronchial wall thickening (9/21, 43%) was the second most common CT finding. Other common CT findings were consolidation (6/21, 29%), pleural effusion (6/21, 29%), pneumothorax or pneumomediastinum (5/21, 24%), and atelectasis (5/21, 24%). Among these, atelectasis and pneumomediastinum (pneumothorax) were only observed in group 1. The GGA lesions showed predilections for diffuse multifocal (10/20, 50%) or lower zone (8/20, 40%) distribution. Involvement of central lung parenchyma (12/20, 60%) was more common than a mixed peripheral and central pattern (6/20, 30%) or a subpleural pattern (2/20, 10%) at the time of presentation. Patchy GGA lesions were more frequent (18/20, 90%) than diffuse GGA lesions, and 75% (15/20) of these lesions had a bronchovascular distribution. Bilateral disease was present in all patients with GGA lesions. Bronchial wall thickening was predominantly centrally located and the distribution of the consolidation was non-specific. Conclusion: The predominantly centrally located GGA lesions, with common multifocal

  14. Inter-rater agreement in the assessment of abnormal chest X-ray findings for tuberculosis between two Asian countries

    Directory of Open Access Journals (Sweden)

    Sakurada Shinsaku

    2012-02-01

    Full Text Available Abstract Background Inter-rater agreement in the interpretation of chest X-ray (CXR films is crucial for clinical and epidemiological studies of tuberculosis. We compared the readings of CXR films used for a survey of tuberculosis between raters from two Asian countries. Methods Of the 11,624 people enrolled in a prevalence survey in Hanoi, Viet Nam, in 2003, we studied 258 individuals whose CXR films did not exclude the possibility of active tuberculosis. Follow-up films obtained from accessible individuals in 2006 were also analyzed. Two Japanese and two Vietnamese raters read the CXR films based on a coding system proposed by Den Boon et al. and another system newly developed in this study. Inter-rater agreement was evaluated by kappa statistics. Marginal homogeneity was evaluated by the generalized estimating equation (GEE. Results CXR findings suspected of tuberculosis differed between the four raters. The frequencies of infiltrates and fibrosis/scarring detected on the films significantly differed between the raters from the two countries (P P = 0.0082, respectively, by GEE. The definition of findings such as primary cavity, used in the coding systems also affected the degree of agreement. Conclusions CXR findings were inconsistent between the raters with different backgrounds. High inter-rater agreement is a component necessary for an optimal CXR coding system, particularly in international studies. An analysis of reading results and a thorough discussion to achieve a consensus would be necessary to achieve further consistency and high quality of reading.

  15. Acute, non traumatic patterns in chest radiography of children. Recognition and understanding of radiographic appearances; Akute, nicht traumabedingte Veraenderungen des unteren Respirationstraktes des Kindes im Thoraxroentgen. Erkennen und Verstehen radiologischer Veraenderungen

    Energy Technology Data Exchange (ETDEWEB)

    Puig, S.; Hoermann, M.; Schibany, N.; Ponhold, W. [Universitaetsklinik fuer Radiodiagnostik, Wien (Austria); Sandstroem, S. [Bild o Funktionsdiagnostisk Centrum, Universitetssjukhus, Lund (Sweden)

    2002-03-01

    The diagnosis of acute, non-traumatic diseases of the lower respiratory tract requires exact knowledge of the specific anatomy, physiology and pathology of the pediatric chest. The absolutely and relatively smaller airways, as compared with those of adults, and the undeveloped collateral ventilation result in radiological appearances that are unique in children. Viral pneumonia is predominant only in small children up to an age of 2 years. With increasing age, there is a higher incidence of bacterial pneumonia. The differentiation of viral and bacterial etiology of a pneumonia is not possible on the basis of chest radiographs. In acute pediatric imaging, possible aspiration of foreign bodies has to be considered. Since most foreign bodies cannot be detected radiographically, indirect features such as hyperinflation or mediastinal shifts have to be evaluated. Primary lung tumors are rare in children. More common are metastases with known primary tumors. Neuroblastoma or lymphomas may mimic intrapulmonary pathologies. (orig.) [German] Die Diagnostik akuter, nicht traumabedingter Erkrankungen des unteren Respirationstraktes erfordert genaue Kenntnisse der speziellen Anatomie, Physiologie und Pathologie der kindlichen Lunge. Die absolut und auch relativ kleineren Luftwege im Vergleich zum Erwachsenen, aber auch der noch nicht ausgebildete Kollateralkreislauf fuehren zu pulmonalen Veraenderungen, wie sie nur beim Kind vorkommen. Bei den Pneumonien sind Viren nur bei Kleinkindern bis zum 2. Lebensjahr praedominant. Mit zunehmendem Alter treten Bakterien immer mehr in den Vordergrund. Eine Unterscheidung zwischen viralem und bakteriellem Erreger ist im Thoraxroentgen nicht moeglich. Haeufig ist auch eine fragliche Fremdkoerperaspiration abzuklaeren. Da die meisten Fremdkoerper nicht roentgendicht sind, muss auf indirekte Zeichen wie Ueberblaehung und Mediastinalshift geachtet werden. Primaere pulmonale Tumoren zaehlen zu den Raritaeten. Haeufiger sind Sekundaerblastome

  16. Serial chest CT findings in interstitial lung disease associated with polymyositis-dermatomyositis

    Energy Technology Data Exchange (ETDEWEB)

    Bonnefoy, Olivier; Ferretti, Gilbert; Calaque, Olivier; Coulomb, Max; Begueret, Hugues; Beylot-Barry, Marie; Laurent, Francois E-mail: francois.laurent@chu-bordeaux.fr

    2004-03-01

    Objective: A retrospective study was carried out in two institutions to determine serial changes in the pattern, distribution, and extent of interstitial lung disease (ILD) associated with polymyositis (PM)-dermatomyositis (DM) using HRCT. Subjects and methods: Twenty patients with PM-DM and clinical suspicion of ILD who underwent at least two serial HRCT examinations were retrospectively evaluated by two readers. Patients were classified according to the dominant CT pattern which was correlated with clinical evolution and underlying histology when available (n=6). Results: Patients were classified into four groups according to the dominant pattern: ground-glass attenuation and reticulation (group 1, n=9); honeycombing (group 2, n=4); airspace consolidation (group 3, n=4), and normal or almost normal lung (group 4, n=3). Under medical treatment, serial HRCT showed that the extent of areas of ground-glass opacities (group 1) decreased in five patients, stabilized in two, and increased in two. Pathologic findings demonstrated usual interstitial pneumonia (UIP) in two cases and unspecified interstitial pneumonia in one. In group 2, extent of honeycombing increased in three cases and stabilized in one. In group 3, dramatic resolution of airspace consolidation occurred in three cases. Clinical deterioration with extensive consolidation at CT and diffuse alveolar damage (DAD) at histology occurred in one patient of each of the three previous groups. Lesions stayed invisible or progressed slightly in the fourth group. Conclusion: In ILD associated with PM-DM, clinical deterioration and DAD in the follow-up can be observed whatever the HRCT pattern. However, unfavorable evolution is constant when honeycombing is present at the initial CT.

  17. Extracranial soft-tissue swelling: a normal postmortem radiographic finding or a sign of trauma?

    Energy Technology Data Exchange (ETDEWEB)

    Strouse, P.J. [Section of Pediatric Radiology, University of Michigan Medical Center, Ann Arbor (United States); Caplan, M. [Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan (United States); Owings, C.L. [Department of Pediatrics and Communicable Diseases, C. S. Mott Children`s Hospital, Ann Arbor, Michigan (United States)

    1998-08-01

    Objective. To determine if extracranial soft-tissue swelling is an expected postmortem finding or a sign of trauma. Materials and methods. Extracranial soft-tissue thickness was measured at 5 standardized locations on postmortem skull films obtained of 18 infants with no evidence of trauma on autopsy. The same measurements were performed on the skull films of 100 living children, all less than 3 years old and without clinical history of trauma. Results. Extracranial soft tissues measured only slightly greater in the postmortem group than on films of living children; however, the difference did achieve statistical significance. Conclusion. Minimal extracranial soft-tissue swelling is a normal finding on a postmortem skeletal survey. The presence of substantial or asymmetric extracranial soft-tissue swelling should be viewed with suspicion for trauma. (orig.) With 2 tabs., 5 refs.

  18. New Developed DR Detector Performs Radiographs of Hand, Pelvic and Premature Chest Anatomies at a Lower Radiation Dose and/or a Higher Image Quality

    DEFF Research Database (Denmark)

    Precht, Helle; Outzen, Claus Bjørn; Tingberg, Anders;

    2013-01-01

    quality compared to previous DR detector versions. To examine whether the newly developed Canon CXDI-70C DR detector provides an improved image quality and/or allows for dose reductions in hand and pelvic bone examinations as well as premature chest examinations, compared to the previous (CXDI-55C) DR...... studies indicated that by using the CXDI-70C detector, diagnostic image quality could be maintained at a dose reduction of in average 30 %, depending on anatomy and kVp level. This indicates that the CXDI-70C detector is significantly more sensitive than the previous model, and supports a better clinical...

  19. Bone and gallium scan findings in malignant fibrous histiocytoma. Case report with radiographic and pathologic correlation

    Energy Technology Data Exchange (ETDEWEB)

    Mackey, J.K.; Alexieva-Jackson, B.; Fetters, D.V.; Edwards, S.M.; McBride, J.P.; Cole, R.L.; Trapp, W.G.

    1987-01-01

    Malignant fibrous histiocytoma (MFH) is the most common soft tissue malignancy in adults. The Ga-67 citrate scan findings of an extremity-located MFH, the most common location of this neoplasm, have never been published in English language journals to the best of the authors' knowledge. Ga-67 citrate and Tc-99m MDP scans of the thigh mass accurately depicted the tumor's local extent, including the presence of central ischemic necrosis within the tumor, and the absence of adjacent osseous involvement and distant metastases, as correlated with computed tomography, angiography, and pathologic examinations.

  20. Wassel′s Type V Polydactyly with Plain Radiographic and CT Findings

    Directory of Open Access Journals (Sweden)

    Berna Dirim Mete

    2015-01-01

    Full Text Available Duplication of the thumb is the most common polydactyly of the hand. Wassel′s classification is frequently used to classify the polydactyly of the hand. His classification was based on the level of duplication and the number of bones in the thumb, and has seven groups (Types I-VII according to the level of the bifurcation, except for his Type VII. The most common type is the bifurcation at the metacarpophalangeal joint (Type IV. In this paper, we report a very rare case of Type V thumb polydactyly in a 42-year-old man, who presented with swan neck deformity of the radial thumb and discuss the plain radiography and computed tomography (CT findings. Kumar recently reported plain radiography findings in a case of bifid first metacarpal in a 13-year-old girl, who presented with swan neck deformity of the left thumb. To our knowledge, our case is the second presented case that has a swan neck deformity with bifid metacarpal.

  1. Absorbed doses received by patients submitted to chest radiographs in hospitals of the city of Sao Paulo, Brazil; Doses absorvidas pelos pacientes submetidos a radiografias toracicas em hospitais do municipio de Sao Paulo

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, Marcelo Baptista de

    2000-07-01

    Medical irradiation contributes with a significant amount to the dose received by the population. Here, this contribution was evaluated in a survey of absorbed doses received by patients submitted to chest radiological examinations (postero-anterior (PA) and lateral (LAT) projections) in hospitals of the city of Sao Paulo. Due to the variety of equipment and procedures used in radiological examinations, a selection of hospitals was made (12, totalizing 27 X-ray facilities), taking into account their representativeness as medical institutions in the city, in terms of characteristics and number of radiographs carried out. An anthropomorphic phantom, provided with thermoluminescent dosemeters (TLD-1 00), was irradiated simulating the patient, and the radiographic image quality was evaluated. Absorbed doses were determined to the thoracic region (entrance and exit skin and lung doses), and to some important organs from the radiation protection point of view (lens of the eye, thyroid and gonads). The great variation on the exposure parameters (kV, mA.s, beam size) leads to a large interval of entrance skin doses-ESD (coefficients of variation, CV, of 60% and 76%, for PA and LAT projections, respectively, were found) and of organ doses (CV of 60% and 46%. for thyroid and lung respectively). Mean values of ESD for LAT and PA projections were 0.22 and 0.98 mGy, respectively. The average absorbed doses per exam (PA and LAT) to thyroid and lung, 0.15 and 0.24 mGy respectively,showed that the thyroid was irradiated by the primary beam in many cases. Values of lens of the eye and gonad absorbed doses were below 30 {mu}Gy. Comparison of the lung doses obtained in this study with values in the literature, calculated by Monte Carlo simulation, showed good agreement. On the other hand, the comparison shows significant differences in the dose values to organs outside the chest region (thyroid, lens of eye and gonads). The effective dose calculated for a chest examination, PA and

  2. Chest MRI

    Science.gov (United States)

    Nuclear magnetic resonance - chest; Magnetic resonance imaging - chest; NMR - chest; MRI of the thorax; Thoracic MRI ... healthy enough to filter the contrast. During the MRI, the person who operates the machine will watch ...

  3. Impact of positive chest X-ray findings and blood cultures on adverse outcomes following hospitalized pneumococcal lower respiratory tract infection

    DEFF Research Database (Denmark)

    Skovgaard, Marlene; Schønheyder, Henrik Carl; Benfield, Thomas;

    2013-01-01

    Little is known about the clinical presentation and outcome of pneumococcal lower respiratory tract infection (LRTI) without positive chest X-ray findings and blood cultures. We investigated the prognostic impact of a pulmonary infiltrate and bacteraemia on the clinical course of hospitalized...

  4. Thin-section chest CT findings of primary Sjoegren's syndrome: correlation with pulmonary function

    Energy Technology Data Exchange (ETDEWEB)

    Taouli, Bachir; Mourey, Isabelle [Department of Radiology, Universite Pierre et Marie Curie, Paris (France); Brauner, Michel W.; Lemouchi, Djamel [Department of Radiology, Universite Paris XIII, Bobigny (France); Grenier, Philippe A. [Department of Radiology, Universite Pierre et Marie Curie, Paris (France); Institut National de la Sante et de la Recherche Medicale, Universite Pierre et Marie Curie, Paris (France)

    2002-06-01

    The purpose of this study was to describe thin-section CT findings of lung involvement in patients with primary Sjoegren's syndrome (PSS), and to correlate them with pulmonary function tests (PFT). The chest thin-section CT examinations of 35 patients with proven diagnosis of PSS and respiratory symptoms were retrospectively assessed by two observers, in a first step independently with interobserver evaluation, and in a second step in consensus. The extent of the most frequent CT findings was scored. Correlation was made with PFT in 31 of these patients. Three main CT patterns were identified with good interobserver agreement (kappa coefficient 0.71): 19 of 35 (54%) large and/or small airways disease; 7 of 35 (20%) interstitial lung fibrosis (ILF); and 5 of 35 (14%) suggestive of lymphocytic interstitial pneumonia (LIP). The CT scans were normal in 2 patients (6%) and showed only dilatation of pulmonary vessels due to pulmonary arterial hypertension in two others (6%). Airway disease patients had predominantly obstructive profiles (mean FEV{sub 1}/FVC ratio 69.7{+-}12.7%, mean MEF{sub 25} 50.1{+-}22.9%), whereas patients with ILF and LIP had predominantly restrictive profiles and/or a decreased diffusing lung capacity (mean TLC 87.0{+-}26.0 and 64.6{+-}18.6%, mean DL{sub CO} 57.4{+-}21.2 and 52.0{+-}8.0%). Significant correlation (p<0.01) was found between the scores of ground-glass attenuation and TLC (r=-0.84) and DL{sub CO} (r=-0.70) and between the score of air trapping and FEV1 (r=-1.0). In patients with PSS and respiratory symptoms, thin-section CT may provide characterization of lung involvement which correlates with pulmonary function. (orig.)

  5. Rheumatoid arthritis: Skeletal manifestations observed on portable chest roentgenograms

    Energy Technology Data Exchange (ETDEWEB)

    Levine, R.B.; Sullivan, K.L.

    1985-04-01

    This report describes the thoracic skeletal radiographic findings of rheumatoid arthritis, observed on portable chest examinations of 21 patients. The pathophysiology is reviewed and additional examples of a recently described finding are illustrated: erosion of the medial surface of the proximal humerus with subsequent pathologic fracture, associated with superior and medial migration of the humeral head. It has been proposed that erosion of the medial aspect of the proximal humerus is due to impingement wear, and that pathologic fracture results from the fulcrum effect of the inferior lip of the glenoid on the humerus. Rheumatoid arthritis is often diagnosed by the clinician rather than the radiologist. However, in acutely ill patients receiving portable chest radiographs, complete history and laboratory findings are often unavailable. Attention to the thoracic skeleton may clarify pleural and/or parenchymal lung disease in these patients.

  6. Chest radiological patterns predict the duration of mechanical ventilation in children with RSV infection

    Energy Technology Data Exchange (ETDEWEB)

    Prodhan, Parthak [University of Arkansas for Medical Sciences, Division of Pediatric Critical Care and Cardiology, College of Medicine, Little Rock, AR (United States); Westra, Sjirk J. [Massachusetts General Hospital, Division of Pediatric Radiology, Boston, MA (United States); Lin, James [Mattel Children' s Hospital at UCLA, Division of Pediatric Critical Care, Los Angeles, CA (United States); Karni-Sharoor, Sarit [Shaarei Tzedek Medical Center, Pediatric Critical Care Unit, Jerusalem (Israel); Regan, Susan [Massachusetts General Hospital, Department of Medicine, Boston, MA (United States); Noviski, Natan [Massachusetts General Hospital, Pediatric Critical Care Medicine, Boston, MA (United States)

    2009-02-15

    RSV-infected children demonstrate various radiographic features, some of which are associated with worse clinical outcomes. To investigate whether specific chest radiological patterns in RSV-infected children with acute respiratory failure (ARF) in the peri-intubation period are associated with prolonged duration of mechanical ventilation. We included RSV-infected children <1 year of age admitted with ARF from 1996 through 2002 to the pediatric intensive care unit at Massachusetts General Hospital. Their chest radiographs were evaluated at three time-points: preintubation (day -1) and days 1 and 2 after intubation. Univariate and multiple logistic regressions models were utilized to investigate our objective. The study included 46 children. Using day 1 chest radiograph findings to predict duration of mechanical ventilation of >8 days, a backward stepwise regression arrived at a model that included age and right and left lung atelectasis. Using day 2 chest radiograph results, the best model included age and left lung atelectasis. A model combining the two days' findings yielded an area under the ROC curve of 0.92 with a satisfactory fit (P = 0.95). Chest radiological patterns around the time of intubation can identify children with RSV-associated ARF who would require prolonged mechanical ventilation. (orig.)

  7. Bone marrow edema pattern in advanced hip osteoarthritis: quantitative assessment with magnetic resonance imaging and correlation with clinical examination, radiographic findings, and histopathology

    Energy Technology Data Exchange (ETDEWEB)

    Taljanovic, Mihra S.; Schwartz, Stephanie A. [The University of Arizona HSC, Department of Radiology, Tucson, AZ (United States); Graham, Anna R. [The University of Arizona HSC, Department of Pathology, Tucson, AZ (United States); Benjamin, James B. [University Orthopaedic Specialists, Tucson, AZ (United States); Gmitro, Arthur F.; Krupinski, Elizabeth A.; Hunter, Tim B. [The University of Arizona, Department of Radiology, Tucson, AZ (United States); Resnick, Donald L. [University of California, Veterans Affairs Medical Center, San Diego, CA (United States)

    2008-05-15

    To correlate the amount of bone marrow edema (BME) calculated by magnetic resonance imaging(MRI) with clinical findings, histopathology, and radiographic findings, in patients with advanced hip osteoarthritis(OA). The study was approved by The Institutional Human Subject Protection Committee. Coronal MRI of hips was acquired in 19 patients who underwent hip replacement. A spin echo (SE) sequence with four echoes and separate fast spin echo (FSE) proton density (PD)-weighted SE sequences of fat (F) and water (W) were acquired with water and fat suppression, respectively. T2 and water:fat ratio calculations were made for the outlined regions of interest. The calculated MRI values were correlated with the clinical, radiographic, and histopathologic findings. Analyses of variance were done on the MRI data for W/(W + F) and for T2 values (total and focal values) for the symptomatic and contralateral hips. The values were significantly higher in the study group. Statistically significant correlations were found between pain and total W/(W + F), pain and focal T2 values, and the number of microfractures and calculated BME for the focal W/(W + F) in the proximal femora. Statistically significant correlations were found between the radiographic findings and MRI values for total W/(W + F), focal W/(W + F) and focal T2 and among the radiographic findings, pain, and hip movement. On histopathology, only a small amount of BME was seen in eight proximal femora. The amount of BME in the OA hip, as measured by MRI, correlates with the severity of pain, radiographic findings, and number of microfractures. (orig.)

  8. Comparison of chest-CT findings of Influenza virus-associated pneumonia in immunocompetent vs. immunocompromised patients

    Energy Technology Data Exchange (ETDEWEB)

    Kloth, C., E-mail: christopher.kloth@med.uni-tuebingen.de [Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University, Hoppe-Seyler-Str. 3, 72076 Tübingen (Germany); Forler, S.; Gatidis, S. [Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University, Hoppe-Seyler-Str. 3, 72076 Tübingen (Germany); Beck, R. [Institute of Medical Virology and Epidemiology of Viral Diseases, Eberhard-Karls-University, Elfriede-Aulhorn-Straße 6, 72076 Tübingen (Germany); Spira, D.; Nikolaou, K.; Horger, M. [Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University, Hoppe-Seyler-Str. 3, 72076 Tübingen (Germany)

    2015-06-15

    Highlights: • Patterns of pulmonary infiltration caused by Influenza viruses do not significantly differ between immunocompetent and immunocompromised patients or between different types and subtypes of Influenza virus. • Patterns of pulmonary infiltration caused by Influenza viruses seem to be interchangeable which might in part explain the great overlap in CT-imaging findings that has been reported in the past. • Interestingly, pattern transition from interstitial into airway-centric pattern seems to be frequent in immunocompromised patients receiving specific antiviral therapy, whereas the conversion of the airway-centric pattern into an interstitial pattern was observed more frequent in immunocompetent patients developing ARDS. - Abstract: Purpose: To retrospectively compare CT-patterns of pulmonary infiltration caused by different Influenza virus types and subtypes in immunocompetent and immunocompromised patients for possible discrimination. Materials and methods: Retrospective database search at our institution yielded 237 patients who were tested positive for Influenza virus type A or type B by bronchoalveolar lavage between January 2009 and April 2014. Fifty-six of these patients (female 26; male 30; median age 55.8 y, range 17–86 y; SD ± 14.4 y) underwent chest-HRCT due to a more severe clinical course of pulmonary infection. We registered all CT-findings compatible with pulmonary infection classifying them as airway predominant (tree-in-bud, centrilobular nodules, bronchial wall thickening ± peribronchial ground-glass opacity and consolidation) vs. interstitial-parenchymal predominant (bilateral, symmetrical GGO, consolidation, crazy paving and/or interlobular septal thickening). Twenty-six patients (46.4%) had follow-up CT-studies (0.78 mean, SD ± 5.8 scans). Results: Thirty-six patients were immunocompromised (group I) whereas 20 patients were immunocompetent (group II). An airway-centric pattern of infection was found in 15 patients (group

  9. Sandstorm in the chest?

    Directory of Open Access Journals (Sweden)

    Talluri MR

    2011-07-01

    Full Text Available A 32 year old female presented with dry cough and progressive breathlessness of one year duration. There was no history suggestive of collagen vascular disease, lung parenchymal infection or allergic airway disease. Clinical evaluation showed basal fine inspiratory crepitations. Radiographic examination of the chest revealed a black pleura line and lung parenchymal calcification. CT scan of the chest demonstrated nodular calcification of lung parenchyma with a “crazy pavement” pattern, which is suggestive of alveolar calcification. Pulmonary function test showed a severe restrictive defect. On transbronchial lung biopsy calcific spherules suggestive of the alveolar microlithiasis were seen. Diagnosis of pulmonary alveolar microlithiasis was made and symptomatic treatment was given, as there is no specific therapy available. The case illustrates an unusual cause of shortness of breath in a young female with striking radiographic features.

  10. Radiologic Findings of Influenza A (H1N1) Pneumonia: Report of Two Cases

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Jin Kyoung; Ahn, Myeong Im; Jung, Jung Im; Han, Dae Hee; Park, Seog Hee; Park, Chan Kwon; Kim, Young Kyoon [Seoul St. Mary' s Hospital, Seoul (Korea, Republic of)

    2010-08-15

    Novel influenza A (H1N1) infection is a highly infectious disease, which has been rapidly spreading worldwide since it was first documented in March of 2009 in Mexico. We experienced and report two cases of Influenza A (H1N1) pneumonia, accompanied by chest radiographic and CT findings. The chest radiographs revealed diffuse haziness and extensive airspace consolidation, whereas the CT scans demonstrated multifocal areas of ground glass opacity and airspace consolidation with a CT halo sign.

  11. Chest Pain

    Directory of Open Access Journals (Sweden)

    Samad Shams-Vahdati

    2014-03-01

    Full Text Available Introduction: Acute chest pain is an important and frequently occurring symptom in patients. Chest pain is often a sign of ischemic heart disease. Associated findings of electrocardiograph (ECG are rather heterogeneous, and traditional cardiac biomarkers such as Creatine Kinase-MB (CK-MB suffer from low cardiac specificity and sensitivity. In this study cost effectiveness of cardiac biomarkers single quantitative measurement was examined.Methods: The present descriptive-analytic study conducted on patients who were asked for troponin I and CK-MB. All patients who referred to Emergency unit of Tabriz Imam Reza educational-medical center during January 2012 to July the 2013 were included in study. All patients included in the study were documented in terms of age, sex, working shift of referring, main complaint of patient, symptoms in referring, ECG findings, and results of troponin I and CK-MB tests.Results: In this study, 2900 patients were studied including 1440 (49.7% males and 1460 (50.3% females. Mean age of patients was 62.91 (SD=14.36. Of all patients 1880 (64.8% of patients referred during 8 a.m. to 8 p.m. and 1020 (35.2% patients were referred during 8 p.m. to 8 a.m. The sensitivity of cardiac biomarkers’ test in diagnosing Acute Coronary Syndrome (ACS disease was calculated as 44.8% and its specificity was 86.6%. For diagnosing Acute Myocardial Infarction (AMI, sensitivity of cardiac biomarkers’ test was 72.2% and its specificity was 86%. None of patients who were finally underwent unstable angina diagnosis showed increase in cardiac enzymes.Conclusion: In conclusion, cardiac biomarkers can be used for screening acute chest pains, also cost effectiveness of cardiac biomarkers, appropriate specificity and sensitivity can guarantee their usefulness in emergency room.

  12. Cardiac MRI. Diagnostic gain of an additional axial SSFP chest sequence for the detection of potentially significant extracardiac findings in the cardiac MRI examination setting

    Energy Technology Data Exchange (ETDEWEB)

    Roller, F.C.; Schneider, C.; Krombach, G.A. [University Hospital Giessen (Germany). Dept. Radiology; Schuhbaeck, A. [University Hospital Giessen (Germany). Dept. Cardiology; Rolf, A. [Kerckhoff Hospital Bad Nauheim (Germany). Dept. Cardiology

    2014-01-15

    Purpose: Cardiac MRI (CMRI) is an effective method for imaging of the heart. The aim of our study was to assess whether an axial chest sequence in addition to the standard CMR examination setting has advantages in the detection of potentially significant extracardiac findings (PSEF). Materials and Methods: 400 consecutive patients were imaged at 1.5 T for clinical reasons. In addition to the standard long and short-axis views, an axial SSFP sequence was obtained covering the thorax from the lung apex to the diaphragm. All sequences were separately evaluated for PSEF. Results: A total of 25 PSEF were diagnosed in 400 patients, including 16 pleural effusions, a pulmonary fibrosis, a spondylodiscitis, ascites, lymphadenopathies, relapse of a mamma carcinoma, growth of adrenal glands metastases and diaphragmatic elevation. All 25 PSEF were detected by reading survey sequences. 24 of the 25 PSEF were detected by the additional SSFP chest sequence as well as the CINE sequences. Conclusion: In our study the additional axial SSFP chest sequence didn't show a benefit in the detection of PSEF. With the survey sequences we were able to detect all PSEF. We conclude that survey images should be assessed for additional findings. (orig.)

  13. Senile Calcification of the Trachea, Aortic Arch, and Mitral Annulus: An Incidental Finding on Chest X-Ray.

    Science.gov (United States)

    Hosseinzadeh Maleki, Mahmood; Kazemi, Toba; Davoody, Navid

    2015-10-27

    A 94-year-old woman presented with dizziness and hypotension of 2 days' duration. She denied any syncope, presyncope, or angina. She had received a permanent pacemaker 12 years previously for the management of complete heart block (CHB), but she failed to program it. Twelve-lead electrocardiography revealed CHB with ventricular escape rhythm (40/min), so we inserted a temporary pacemaker. Anteroposterior chest X-ray showed trachea, aortic arch, and severe mitral valve calcification. Tracheal calcification is usually seen after 40 years old without clinical importance. However, it is seen in patients with renal failure, metastases, and prolonged use of warfarin as well as in pregnancy.(1) (-) (3).

  14. Computer-aided diagnosis in chest radiography: Beyond nodules

    Energy Technology Data Exchange (ETDEWEB)

    Ginneken, Bram van [University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht (Netherlands)], E-mail: bram@isi.uu.nl; Hogeweg, Laurens; Prokop, Mathias [University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht (Netherlands)

    2009-11-15

    Chest radiographs are the most common exam in radiology. They are essential for the management of various diseases associated with high mortality and morbidity and display a wide range of findings, many of them subtle. In this survey we identify a number of areas beyond pulmonary nodules that could benefit from computer-aided detection and diagnosis (CAD) in chest radiography. These include interstitial infiltrates, catheter tip detection, size measurements, detection of pneumothorax and detection and quantification of emphysema. Recent work in these areas is surveyed, but we conclude that the amount of research devoted to these topics is modest. Reasons for the slow pace of CAD development in chest radiography beyond nodules are discussed.

  15. Characteristics of pulmonary cysts in Birt-Hogg-Dube syndrome: Thin-section CT findings of the chest in 12 patients

    Energy Technology Data Exchange (ETDEWEB)

    Tobino, Kazunori, E-mail: tobino@juntendo.ac.jp [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Gunji, Yoko [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Kurihara, Masatoshi [Pneumothorax Center, Nissan Tamagawa Hospital, 4-8-1 Seta, Setagaya-Ku, Tokyo 158-0095 (Japan); The Study Group of Pneumothorax and Cystic Lung Diseases, 4-8-1 Seta, Setagaya-Ku, Tokyo 158-0095 (Japan); Kunogi, Makiko; Koike, Kengo [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Tomiyama, Noriyuki [Department of Radiology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871 (Japan); Johkoh, Takeshi [Department of Radiology, Kinki Central Hospital of Mutual Aid Association of Public School Teachers, Kurumazuka 3-1, Itami, Hyogo 664-0872 (Japan); Kodama, Yuzo [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Iwakami, Shin-ichiro [Department of Respiratory Medicine, Juntendo University, Shizuoka Hospital, 1129 Nagaoka, Izunokuni, Shizuoka 410-2295 (Japan); Kikkawa, Mika [Biochemical Research Center, Division of Proteomics and Biomolecular Sciences, Juntendo University, Graduate School of Medicine, Bunkyo-Ku, Tokyo (Japan); Takahashi, Kazuhisa [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Seyama, Kuniaki [Department of Respiratory Medicine, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421 (Japan); Study Group of Pneumothorax and Cystic Lung Diseases, 4-8-1 Seta, Setagaya-Ku, Tokyo 158-0095 (Japan)

    2011-03-15

    Purpose: To describe in detail the characteristic chest computed tomography (CT) findings of Birt-Hogg-Dube (BHD) syndrome. Materials and methods: Thin-section chest CT scans of consecutive 12 patients with genetically diagnosed BHD syndrome were retrospectively evaluated by two observers, especially about the characteristics (distribution, number, size, shape and relation to pleura) of pulmonary cysts. Interobserver agreement in the identification of abnormalities on the CT images was achieved using the {kappa} statistic, and the degree of interobserver correlation for the characterization of pulmonary cysts was assessed using the Spearman rank correlation coefficient. Results: Multiple pulmonary cysts were seen in all patients. The number of cysts in each patient was various (range, 29-407), and cysts of various sizes (from a few mm to 2 cm or more) were seen in all patient. 76.6% (mean) of cysts were irregular-shaped, and 40.5% (mean) of cysts were located along the pleura. The mean extent score of cysts was 13% of the whole lung, and the distribution of cysts was predominantly in the lower medial zone. Finally, cysts abutting or including the proximal portions of lower pulmonary arteries or veins were also seen in all patients. Conclusion: Multiple, irregular-shaped cysts of various sizes with lower medial lung zone predominance are characteristic CT findings of BHD syndrome. Cysts abutting or including the proximal portions of lower pulmonary arteries or veins may also exist in this syndrome in a high probability.

  16. Digital chest radiography

    DEFF Research Database (Denmark)

    Debess, Jeanne Elisabeth; Vejle-Sørensen, Jens Kristian; Thomsen, Henrik;

    2015-01-01

    of clinical supervisors. Optimal collimation is determined by European and Regional Danish guidelines. The areal between current and optimal collimation is calculated. The experimental research is performed in September - October 2014 Siemens Axiom Aristos digital radiography system DR using 150 kV, 1,25 -3......Purpose: Quality improvement of basic radiography focusing on collimation and dose reduction in digital chest radiography Methods and Materials:A retrospective study of digital chest radiography is performed to evaluate the primary x-ray tube collimation of the PA and lateral radiographs. Data from...... one hundred fifty self-reliant female patients between 15 and 55 years of age are included in the study. The clinical research is performed between September and November 2014 where 3rd year Radiography students collect data on four Danish x-ray departments using identical procedures under guidance...

  17. Nosocomial Legionnaires’ Disease: Clinical and Radiographic Patterns

    Directory of Open Access Journals (Sweden)

    Thomas J Marrie

    1992-01-01

    Full Text Available From 1981 to 1991, 55 patients (33 males, 22 females, mean age 58.6 years with nosocomial Legionnaires’ disease were studied. The mortality rate was 64%. One-half of the patients developed nosocomial Legionnaires’ disease within three weeks of admission. A surprising clinical feature was the low rate of findings of consolidation on physical examination, despite the fact that 52% of patients had this finding on chest radiograph. More than one-half of patients had pre-existing lung disease, rendering a radiographic diagnosis of pneumonia due to Legionella pneumophila impossible in 16% of cases despite microbiological confirmation. Nineteen per cent of patients who had blood cultures done had a pathogen other than L pneumophila isolated, suggesting dual infection in at least some of the patients. When the clinical and radiographic findings were combined it was noted that 40% of patients had one of three patterns suggestive of nosocomial Legionnaires’ disease: rapidly progressive pneumonia, lobar opacity and multiple peripheral opacities. However, in 60% of patients there were no distinctive features.

  18. Thoracic radiology in patients in intensive care. Correlation of chest examinations with clinical and biochemical findings. Radiologische Verlaufskontrolle der Thoraxorgane beim Intensivpflegepatienten. Wertigkeit der Thoraxaufnahme in Korrelation mit klinischen und biochemischen Befunden

    Energy Technology Data Exchange (ETDEWEB)

    Kaltenborn, H.; Schild, H.; Hoehne, U.; Gast, U.; Lorenz, J.; Schinzel, H. (Mainz Univ. (Germany, F.R.). Inst. fuer Klinische Strahlenkunde)

    1991-05-01

    Correlation between chest radiographs and clinical indicators was studied in 212 patients in intensive care. 1. There was good correlation between raised pulmonary artery pressure and radiological signs of left heart insufficiency, but not with the value of central venous pressure. 2. Fever and leukocytosis nearly always precede radiological evidence of pneumonia; their persistence does not necessarily indicate persistent pneumonia. 3. Pneumonias, effusions, atalectases and emboli are more common on the right. 4. More than 70% of central venous catheters were incorrectly placed; most commonly, the catheter was placed too low. Life-threatening complications occurred in 1.3%. (orig.).

  19. Wegener's granulomatosis: chest computed tomography findings; Granulomatose de Wegener: aspectos na tomografia computadorizada de torax

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    Monteiro, Evelise de Azevedo; Marchiori, Edson; Martins, Erick Malheiro Leoncio [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Radiologia]. E-mail: edmarchiori@zipmail.com.br; Souza Junior, Arthur Soares [Faculdade de Medicina de Sao Jose do Rio Preto (FAMERP), SP (Brazil). Hospital de Base; Cerqueira, Elza Maria F.P. de [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Ciencias Medicas. Dept. de Radiologia; Irion, Klaus L. [Pavilhao Pereira Filho, Porto Alegre, RS (Brazil); Araujo Neto, Cesar de [Bahia Univ., Salvador, BA (Brazil). Dept. de Radiologia; Souza, Rodrigo Azeredo de [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia

    2003-03-01

    Wegeners granulomatosis is an inflammatory systemic necrotizing idiopathic vasculitis affecting mainly small vessels. In this paper we analyzed the computed tomography findings of seven patients with Wegeners granulomatosis. The most common findings were masses and nodules (71.4%), areas of ground glass attenuation (57.1%), consolidation (42.8%), halo sign (42.8%), cavitation (42.8%), interlobular septa thickening (14.2%), bronchial wall thickening (14.2%) and pleural effusion (14.2%). Although radiological findings are mostly nonspecific, computed tomography and particularly high-resolution computed tomography are important tools in the evaluation of disease activity when evaluated in association with bronchoscopy findings and clinical data. (author)

  20. [Chest trauma].

    Science.gov (United States)

    Freixinet Gilart, Jorge; Ramírez Gil, María Elena; Gallardo Valera, Gregorio; Moreno Casado, Paula

    2011-01-01

    Chest trauma is a frequent problem arising from lesions caused by domestic and occupational activities and especially road traffic accidents. These injuries can be analyzed from distinct points of view, ranging from consideration of the most severe injuries, especially in the context of multiple trauma, to the specific characteristics of blunt and open trauma. In the present article, these injuries are discussed according to the involvement of the various thoracic structures. Rib fractures are the most frequent chest injuries and their diagnosis and treatment is straightforward, although these injuries can be severe if more than three ribs are affected and when there is major associated morbidity. Lung contusion is the most common visceral lesion. These injuries are usually found in severe chest trauma and are often associated with other thoracic and intrathoracic lesions. Treatment is based on general support measures. Pleural complications, such as hemothorax and pneumothorax, are also frequent. Their diagnosis is also straightforward and treatment is based on pleural drainage. This article also analyzes other complex situations, notably airway trauma, which is usually very severe in blunt chest trauma and less severe and even suitable for conservative treatment in iatrogenic injury due to tracheal intubation. Rupture of the diaphragm usually causes a diaphragmatic hernia. Treatment is always surgical. Myocardial contusions should be suspected in anterior chest trauma and in sternal fractures. Treatment is conservative. Other chest injuries, such as those of the great thoracic and esophageal vessels, are less frequent but are especially severe.

  1. Radiologic findings of diffuse Pulmonary hemorrhage

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    Seo, Mi Ra; Song, Koun Sik; Lee, Jin Seong; Lim, Tae Hwan [Ulsan Univ. College of Medicine, Seoul (Korea, Republic of)

    1998-12-01

    To describe the chest radiographic and CT findings of diffuse pulmonary hemorrhage. Two radiologists retrospectively analysed the chest radiographic and CT findings of six patients with diffuse pulmonary hemorrhage. Using open lung biopsy(n=3D2) and transbronchial lung biopsy or bronchoalveolar lavage(n=3D4), diagnosis was based on the presence of hemosiderin-laden macrophage or intra-alveolar hemorrhage. Underlying diseases were Wegener's granulomatosis(n=3D2), antiphospholipid antibody syndrome(n=3D2), Henoch-Schonlein purpura(n=3D1), and idopathic pulmonary hemosiderosis(n=3D1). In all patients, sequential chest radiographs, obtained during a one to six-month period, were available. HRCT scans were obtained in five patinets, and conventional CT scans in one. Follow-up HRCT scans were obtained in two. We also analyzed the patterns of involvement, distribution and sequential changes in the pulmonary abnormalities seen on chest radiographs and CT scans. Chest radiographs showed multifocal patchy consolidation(n=3D6), ground-glass opacity(n=3D3), and multiple granular or nodular opacity(n=3D3). These lesions were intermingled in five patients, while in one there was consolidation only. Sequential chest radiographs demonstrated the improvement of initial pulmonary abnormalities and appearance of new lesions elsewhere within 5-6 days, though within 7-25 (average, 13) days, these had almost normalized. HRCT scans showed patchy consolidation(n=3D5), multiple patchy ground-glass opacity(n=3D5), or ill-defined air space nodules(n=3D4). These lesions were intermingled in five patients, and in one, ground-glass opacity only was noted. In two patients there were interlobular septal thickening and intalobular reticular opacity. The distribution of these abnormalities was almost always bilateral, diffuse with no zonal predominancy, and spared the apex of the lung and subpleural region were less affected. Although chest radiographic and CT findings of diffuse pulmonary

  2. Roentgenographic findings in hyaline membrane disease treated with exogenous surfactant: comparison with control group

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    Lee, Sun Kyoung; Lim, Chae Ha; Lim, Woo Young; Kim, Young Sook; Byen, Ju Nam; Oh, Jae Hee; Kim, Young Chul [Chosun Univ. College of Medicine, Kwangju (Korea, Republic of)

    1997-01-01

    To compare, with the use of chest radiographic findings, improvement and complications in newborns treated with exogenous surfactant for hyaline membrane disease (HMD), and an untreated control group. Thirty-six patients with HMD were randomly assigned to a control group (n=18) or surfactant treated group (n=18). As part of an initial evaluation of their pulmonary status, we then performed a retrospective statistical analysis of chest radiographic findings obtained in exogenous surfactant treated and untreated infants within the first 90 minutes of life. Subsequent examinations were performed at less than 24 hours of age. Chest radiograph before treatment showed no significant differences between the two groups, but significant improvement was noted in the surfactant treated group, in contrast to the control group. The most common chest radiographic finding after surfactant administration was uniform (n=15) or disproportionate (n=2) improvement of pulmonary aeration. Patent ductus arteriosus developed in three treated neonates and in four cases in the control group. Air leak occurred in three cases in the treated group and in five cases in the control group. In one treated patient pulmonary hemorrhage developed and intracranial hemorrhage occurred in three treated neonates and in four cases in the control group. Bronchopulmonary dysplasia was developed in 6 cases of treated group and 3 cases of control group. A chest radiograph is considered to be helpful in the evaluation of improvement and complications of HMD in infants treated with surfactant.

  3. High-resolution computed tomography versus chest radiography in the diagnosis of interstitial lung disease in systemic sclerosis; Avaliacao da tomografia de alta resolucao versus radiografia de torax na doenca intersticial pulmonar na esclerose sistemica

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    Azevedo, Ana Beatriz Cordeiro de; Calderaro, Debora; Moreira, Caio [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Hospital das Clinicas. Servico de Reumatologia; Guimaraes, Silvana Mangeon Meirelles [Gerais Univ., Belo Horizonte, MG (Brazil). Hospital das Clinicas. Secao de Tomografia Computadorizada; Tavares Junior, Wilson Campos; Leao Filho, Hilton Muniz; Andrade, Diego Correa de [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Hospital das Clinicas. Servico de Radiologia e Diagnostico por Imagem]. E-mail: wilsontavaresjrmd@yahho.fr; Ferreira, Cid Sergio; Vieira, Jose Nelson Mendes [Minas Gerais Univ., Belo Horizonte, MG (Brazil). Faculdade de Medicina. Dept. de Radiologia

    2005-04-01

    Objective: To compare the accuracy of high-resolution computed tomography (HRCT) with chest radiography in the diagnosis of interstitial lung disease in systemic sclerosis (SSc). Materials And Methods: HRCT scans and chest radiographs in postero-anterior and lateral views were performed in 34 patients with systemic sclerosis, according to the American College of Rheumatology preliminary criteria for the diagnosis of SSc. The prevalence of radiological findings suggestive of interstitial lung disease in SSc seen on both imaging methods was compared. Results: Interstitial disease was observed on HRCT images of 31 patients (91%) and in the chest radiographs of 16 patients (47%). The most frequent findings observed on HRCT were septal lines (74%), honeycombing (56%) and parenchymal bands (26%). Chest radiographs showed reticular areas of attenuation in 11 patients (32%) and parenchymal distortion in 12% of the patients. In 18 patients (53%) with normal chest radiographs HRCT showed septal lines in 55%, ground glass in 44%, honeycombing in 38.5% and cysts in 33%. Conclusion: HRCT is more sensitive than chest radiography in the evaluation of incipient interstitial lung involvement in patients with SSc and can provide a justification for immunosuppressive therapy in patients with early disease. (author)

  4. Radiographic structural findings in mandibular condyle of orthodontically treated young patients, a possibility of an iatrogenic temporomandibular joint involvement

    Directory of Open Access Journals (Sweden)

    Arati Panchbhai

    2016-01-01

    Full Text Available Aim: Temporomandibular disorders joint disorders (TMD are commonly seen in population. There can be varied etiology to this. The purpose of the study was to study the possible association between orthodontic treatment and TMD. Materials and Methods: For the present study, the 720 subjects were assessed in 2 groups as orthodontically treated group (370 and control group without malocclusion (350. The structural findings were assessed as per the criteria. The data were subjected to statistical analysis using Chi-square test and Pearson's correlation. Results: For all the intergroup and intragroup, the findings were insignificant. Though insignificantly, marginal erosion was common finding followed by flattening and rarefaction. Conclusion: Overall, the study could not confirm the association that orthodontic treatment may lead to TMD. The next extensive study needs to be conducted considering clinical signs and symptoms and the long-term follow-ups.

  5. Pulmonary high-resolution computed tomography findings in nephropathia epidemica

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    Paakkala, Antti, E-mail: antti.paakkala@pshp.fi [Medical Imaging Centre, Tampere University Hospital, 33521 Tampere (Finland); Jaervenpaeae, Ritva, E-mail: ritva.jarvenpaa@pshp.fi [Medical Imaging Centre, Tampere University Hospital, 33521 Tampere (Finland); Maekelae, Satu, E-mail: satu.marjo.makela@uta.fi [Department of Internal Medicine, Tampere University Hospital, 33521 Tampere (Finland); Medical School, University of Tampere, 33521 Tampere (Finland); Huhtala, Heini, E-mail: heini.huhtala@uta.fi [School of Public Health, University of Tampere, 33521 Tampere (Finland); Mustonen, Jukka, E-mail: jukka.mustonen@uta.fi [Department of Internal Medicine, Tampere University Hospital, 33521 Tampere (Finland); Medical School, University of Tampere, 33521 Tampere (Finland)

    2012-08-15

    Purpose: To evaluate lung high-resolution computed tomography (HRCT) findings in patients with Puumala hantavirus-induced nephropathia epidemica (NE), and to determine if these findings correspond to chest radiograph findings. Materials and methods: HRCT findings and clinical course were studied in 13 hospital-treated NE patients. Chest radiograph findings were studied in 12 of them. Results: Twelve patients (92%) showed lung parenchymal abnormalities in HRCT, while only 8 had changes in their chest radiography. Atelectasis, pleural effusion, intralobular and interlobular septal thickening were the most common HRCT findings. Ground-glass opacification (GGO) was seen in 4 and hilar and mediastinal lymphadenopathy in 3 patients. Atelectasis and pleural effusion were also mostly seen in chest radiographs, other findings only in HRCT. Conclusion: Almost every NE patient showed lung parenchymal abnormalities in HRCT. The most common findings of lung involvement in NE can be defined as accumulation of pleural fluid and atelectasis and intralobular and interlobular septal thickening, most profusely in the lower parts of the lung. As a novel finding, lymphadenopathy was seen in a minority, probably related to capillary leakage and overall fluid overload. Pleural effusion is not the prominent feature in other viral pneumonias, whereas intralobular and interlobular septal thickening are characteristic of other viral pulmonary infections as well. Lung parenchymal findings in HRCT can thus be taken not to be disease-specific in NE and HRCT is useful only for scientific purposes.

  6. Radiographic tales

    DEFF Research Database (Denmark)

    Mussmann, Bo Redder

    2007-01-01

    . Methods The study is designed as an observational study with a narrative approach. The participant observations took place in a Danish radiological department and involved 20 examinations followed up by three semi-structured interviews. Conclusions Through emergent narratives radiographers construct...... of their narrative alertness. Errors and failure to keep the time schedule can, however, lead the radiographers to a change of perspective that makes them displace man from the scene of radiography by playing on the premises of technology....

  7. Radiographic Test

    Energy Technology Data Exchange (ETDEWEB)

    Lee, H.J; Yang, S.H. [Korea Electric Power Research Institute, Taejon (Korea)

    2002-07-01

    This report contains theory, procedure technique and interpretation of radiographic examination and written for whom preparing radiographic test Level II. To determine this baseline of technical competence in the examination, the individual must demonstrate a knowledge of radiography physics, radiation safety, technique development, radiation detection and measurement, facility design, and the characteristics of radiation-producing devices and their principles of operation. (author) 98 figs., 23 tabs.

  8. An unusual case of disseminated toxoplasmosis in a previously healthy pregnant patient: radiographic, CT, and MRI findings.

    Science.gov (United States)

    Paruthikunnan, Samir; Shankar, Balasubramanyam; Kadavigere, Rajagopal; Prabhu, Mukhyaprana; Narayanan, Ramakrishna; Jain, Harshwardhan

    2014-11-01

    Toxoplasmosis is a ubiquitous protozoal infection that during pregnancy commonly affects the fetus severely, with maternal infection usually being mild self-limiting. Disseminated toxoplasmosis in a healthy pregnant woman has, to the best of our knowledge, not been reported before. We present a case of disseminated toxoplasmosis involving pulmonary, central nervous system, and lymph nodes in a pregnant woman and imaging findings on radiography, computed tomography, and magnetic resonance imaging.

  9. Pulmonary interstitial glycogenosis in the setting of lung growth abnormality: radiographic and pathologic correlation

    Energy Technology Data Exchange (ETDEWEB)

    Castillo, Monette; Vade, Aruna; Lim-Dunham, Jennifer Eden [Loyola University Health System, Department of Radiology, Maywood, IL (United States); Masuda, Emi [Henry Ford Hospital, Department of Radiology, Detroit, MI (United States); Massarani-Wafai, Rasan [Loyola University Health System, Department of Pathology, Maywood, IL (United States)

    2010-09-15

    Pulmonary interstitial glycogenosis (PIG) is a rare pediatric interstitial lung disease. We report a case of a term boy presenting with tachypnea at birth requiring supplemental oxygen. Chest radiographs followed by high-resolution CT (HRCT) demonstrated hyperinflation and diffuse interstitial markings interspersed with multiple cystic spaces. An open lung biopsy demonstrated a minor component of PIG superimposed upon poor alveolarization. PIG in the setting of lung growth abnormality might be more common than previously described. Additionally, radiographic findings associated with most pediatric interstitial lung diseases are nonspecific, and histopathologic correlation is essential for diagnosis. (orig.)

  10. Sensitivity of computer assisted radionuclide angiography in transient ischemic attack and prolonged reversible ischemic neurological deficit. Comparison with findings in radiographic angiography and transmission computerized axial tomography

    Energy Technology Data Exchange (ETDEWEB)

    Buell, U.; Scheid, K.F.; Lanksch, W.; Kleinhans, E.; Ulbert, V.; Reger, U.; Rath, M.; Moser, E.A.

    Computer assisted radionuclide angiography (CARNA) with 99mTc-DTPA was employed to study 143 patients with transient ischemic attacks (TIA) and 79 patients with prolonged reversible ischemic neurologic deficit (PRIND). The results of CARNA were compared with findings from radiographic angiography (RGA) in 173 patients and with findings in transmission computerized axial tomography (T-CAT) in 154 patients. In patients with TIA, CARNA showed a hemispherical perfusion deficit in 74.8%, and with PRIND 87.3%. This deficit, determined as the relative difference between the involved and the non-involved hemisphere, was significantly (p less than 0.0025) greater in PRIND (minus 23%) than in TIA (minus 17%). Sensitivity of CARNA was independent of the interval from ictus to examination for more than 4 months. RGA in TIA revealed true positives in 82.0%, in PRIND it was 89.5%. T-CAT was positive in TIA in only 16.8% but in PRIND it was 64.4%. Combined sensitivities in TIA (92.4%) and in PRIND (94.0%) were highest with the combination of CARNA and RGA. However, in PRIND the combination of non-invasive methods (CARNA and T-CAT) revealed 93.2% positive findings. Combinations of these evaluation methods may be used to detect cerebrovascular disease in patients with such dysfunction.

  11. Post-traumatic pulmonary pseudocyst with hemopneumothorax following blunt chest trauma: a case report

    Directory of Open Access Journals (Sweden)

    Fagkrezos Dimitris

    2012-10-01

    Full Text Available Abstract Introduction Post-traumatic pulmonary pseudocyst is an uncommon cavitary lesion of the lung and develops after blunt chest trauma and even more rarely following penetrating injuries. It is generally seen in young adults presenting with cough, chest pain, hemoptysis, and dyspnea. Post-traumatic pulmonary pseudocyst should be included in the differential diagnosis of cavitary pulmonary lesions. We describe the case of a 60-year-old Caucasian Greek woman who sustained traumatic pulmonary pseudocyst with hemopneumothorax due to a blunt chest trauma after a traffic accident. Case presentation After a traffic accident, a 60-year-old Caucasian Greek woman sustained a hemopneumothorax due to a blunt chest trauma. There was evidence of an extensive contusion in the posterior and lateral segments of the right lower lobe, a finding that was attributed to an early sign of a cavitation, and the presence of a thin-walled air cavity was detected on the anterior segment of the right lower lobe in the control computed tomography taken 24 hours after admission. Our patient was treated by catheter aspiration, and the findings of computed tomography evaluation about one month later showed complete resolution of one of the two air-filled cavitary lesions. The second pseudocyst also disappeared completely, as shown by the control computed tomography scan performed six months later. Conclusions Traumatic pulmonary pseudocyst is a rare complication of blunt chest trauma, and computed tomography is a more valuable imaging technique than chest radiograph for early diagnosis.

  12. Neurofibromatose tipo 1: aspectos radiológicos do tórax Type 1 neurofibromatosis: radiological findings of the chest

    Directory of Open Access Journals (Sweden)

    Marcos Pontes Muniz

    2010-06-01

    Full Text Available OBJETIVO: Identificar alterações e frequências nas radiografias simples do tórax sugestivas de neurofibromatose tipo 1 e avaliar a possibilidade de inclusão de massa no mediastino posterior como critério de diagnóstico de neurofibromatose tipo 1. MATERIAIS E MÉTODOS: Foram realizadas radiografias com técnica padrão de tórax em póstero-anterior e em perfil de 141 pacientes com neurofibromatose tipo 1, atendidos no Serviço de Radiologia do Hospital de Base e Faculdade de Medicina de São José do Rio Preto, SP. Os resultados obtidos foram avaliados por métodos não paramétricos ao nível de 0,05 de significância (p = 0,05. RESULTADOS: No presente estudo, 141 pacientes com neurofibromatose tipo 1 realizaram radiografia de tórax, sendo as alterações mais frequentes: erosão óssea das costelas (19,8%, peito escavado (12,0%, cifoescoliose (3,5% e massas no mediastino posterior (7,1%. Esses resultados sugerem que as massas (neurofibroma e meningocele devem ser incluídas como critério diagnóstico para neurofibromatose tipo 1, juntamente com displasia do osso esfenoide, pseudoartrose e afinamento do córtex de ossos longos, conforme definido pelo National Institutes of Health. CONCLUSÃO: A presença das massas no mediastino posterior associada às alterações ósseas características definidas pelo National Institutes of Health indicam ser um achado consistente para se considerar como critério diagnóstico da doença.OBJECTIVE: To identify chest radiography findings suggestive of type 1 neurofibromatosis, establishing their frequency and evaluating the possibility of including the presence of posterior mediastinal masses as a criterion for the diagnosis of type 1 neurofibromatosis. MATERIALS AND METHODS: The present study included 141 patients with type 1 neurofibromatosis assisted at the Service of Radiology of Hospital de Base and Faculdade de Medicina de São José do Rio Preto, SP, Brazil, and submitted to standard chest

  13. Radiographic plain film and CT findings in lipoid pneumonia in infants following aspiration of mineral oil used in the treatment of partial small bowel obstruction by Ascaris lumbricoides

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    Oliveira, G.A. de; Del Caro, S.R.; Bender Lamego, C.M.; Mercon de Vargas, P.R.; Vervloet, V.E.C.

    1985-02-01

    Four children developed lipoid pneumonia following ingestion of mineral oil for the treatment of partial small bowel obstruction by Ascaris lumbricoides whorl. CT of the chest showed negative Hounsfield numbers which may prove useful in diagnosis.

  14. A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

    Directory of Open Access Journals (Sweden)

    Rupesh Baloo Daya

    2009-11-01

    Full Text Available ABSTRACT Background: Chest radiography accounts for a significant proportion of ionising radiation in children. The radiation dose of radiographs performed on the Lodox Statscan system has been shown to be lower than that of a computed radiography (CR system. The role of the Lodox Statscan (hereafter referred to as the Statscan in routine erect chest radiography in children has not been evaluated. Objective: To evaluate the image quality and diagnostic accuracy of erect paediatric chest radiographs obtained with the Statscan and compare this with conventional erect chest images obtained with a CR system. Materials and Methods: Thirty three children with suspected chest pathology were enrolled randomly over a period of three months. Erect chest radiographs were obtained with the Statscan, and a Shimadzu R-20J X-ray machine coupled with a Fuji FCR 5000 CR system. Image quality and diagnostic accuracy and diagnostic capability were evaluated between the two modalities. Results: The erect Statscan allowed superior visualisation of the three major airways. Statscan images however, demonstrated exposure and movement artifacts with hemidiaphragms and ribs most prone to movement. Bronchovascular clarity was also considered unsatisfactory on the Statscan images. Conclusion: The Statscan has limitations in erect chest radiography in terms of movement artefacts, exposure fluctuations, and poor definition of lung markings. Despite this, the Statscan allows better visualisation of the major airways, equivalent to a ‘high KV’ film at a fraction of the radiation dose. This supports the finding of an earlier study evaluating Statscan images in trauma cases, where the images were taken supine. Statscan has great potential in assisting in the diagnosis of childhood tuberculosis where airway narrowing occurs as a result of nodal compression.

  15. Radiographic resolution of lymphocytic interstitial pneumonitis (LIP) in children with human immunodeficiency virus (HIV): not a sign of clinical deterioration

    Energy Technology Data Exchange (ETDEWEB)

    Lynch, J.L.; Blickman, J.G.; TerMeulen, D.C. [Dept. of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA (United States); Babl, F.E. [Div. of Pediatric Infections Diseases, Boston Medical Center, MA (United States); Dept. of Pediatrics, Boston Univ. School of Medicine, Boston, MA (United States); Moloney, C.H.; Pelton, S.I. [Dept. of Pediatrics, Boston Univ. School of Medicine, Boston, MA (United States)

    2001-04-01

    Background. The literature and anecdotal evidence associate the resolution of radiographic findings of lymphocytic interstitial pneumonitis (LIP) with a decline in immune and clinical status of human immunodeficiency virus (HIV) infected children. Objective. As our clinical impression was the opposite, we sought to elucidate this contradiction. Materials and methods. Of 52 pediatric patients infected with the HIV currently being followed at our institution, 20 (38.5 %) carried the diagnosis of LIP and 13 (65 %) of these have had complete resolution of radiographic findings of LIP. We retrospectively reviewed the chest radiographs, CD4 counts, and clinical history of these 13 patients. Results. Of the 13 patients who had resolution of radiographic findings, 11 (84.6 %) had no significant change in CD4 count at the time of resolution and remained clinically stable during a mean follow-up period of 32 months. Two patients (15.3 %) developed severe CD4 lymphocytopenia at the time of resolution of LIP, but clinically remained stable. None of these 13 patients had a recurrence of LIP, even with subsequent increases in CD4 count. Conclusion. We suggest that in contradiction to previously published data, resolution of LIP on chest radiographs is not an indicator for poor prognosis for the HIV-infected pediatric patient. (orig.)

  16. Chest radiography in the critically ill

    NARCIS (Netherlands)

    Kröner, A.

    2016-01-01

    Introduction: The chest radiograph (CXR) is a frequently obtained test to complement physical examination in ICU and post-surgery PACU patients. The opinion on indications for a CXR in these two patient categories varies worldwide. One approach is to obtain CXR on indication only, i.e., when there i

  17. Colon in the chest: an incidental dextrocardia: a case report study.

    Science.gov (United States)

    Abd Elrazek, Abd Elrazek; Shehab, Abdullah; Elnour, Asim A; Al Nuaimi, Saif K; Baghdady, Shazly

    2015-02-01

    Diaphragmatic injury is an uncommon traumatic injury (Dextrocardia was an incidental finding, diagnosed by electrocardiography, chest radiograph, and CT chest. Parts of the colon, small intestine, and stomach were within the thorax in the left side due to left diaphragmatic hernia of a nontraumatic cause. Acquired incidental dextrocardia was the main problem due to displacement of the heart to contralateral side by the GI (gastrointestinal) viscera (left diaphragmatic hernia).The patient was prepared for the laparoscopic surgical repair, using a polyethylene mesh 20 cm to close the defect, and the patient recovered with accepted general condition. However, 5 days postoperative, the patient passed away suddenly due to unexplained cardiac arrest.Intrathoracic herniation of abdominal viscera should be considered in patients presented with sudden chest pain concomitant with a history of increased intra-abdominal pressure.

  18. Assessing the role of routine chest radiography in asymptomatic students during registration at a university in an endemic area of tuberculosis

    Directory of Open Access Journals (Sweden)

    Moifo Boniface

    2012-01-01

    Full Text Available Context: Routine chest radiographs are usually obtained from asymptomatic individuals during routine medical visits probably to detect the presence of occult disease. In sub-Saharan countries tuberculosis is endemic among young individuals; primary tuberculosis might be the most probable occult disease sought for. Aims: The aim was to determine the diagnostic yield and cost-effectiveness of routine chest radiography in an asymptomatic student population in Yaounde during registration at a university. Settings and Design: A cross-sectional descriptive study carried out in a University-affiliated hospital in Yaounde, Cameroon. Materials and Methods: Postero-anterior (PA chest radiographs were obtained from students during a routine medical visit before university admission. Radiographic results were coded as normal, minor, or major findings. The estimated cost per radiograph was that of the study setting at the time of the study. Statistical Analysis Used: Epi Info software version 3.3.2 of February 9 2005 (CDC Atlanta was used for statistical analysis. Results: Of 758 students enrolled, there were 280 males and 478 females (sex ratio 1:2. The mean age of the study population was 21 years (age range 15-33 years. All enrolled cases were asymptomatic. There were 739 normal radiographs (97.5%, while 19 radiographs (2.5 % showed minor abnormalities. No major abnormality was seen. The estimated direct cost of all the radiographs obtained was 3,941,600 F CFA ($ 8,760. Conclusions: Routine chest radiography has a low diagnostic yield in asymptomatic students even in a setting where tuberculosis is endemic, and is therefore not cost-effective.

  19. Physiological interpretations of radiographic findings on malformations of small veins: seriality of cisterns, communications to systemic veins and relationship to muscles

    Science.gov (United States)

    Morita, Nobuo; Terada, Tomoaki; Sato, Morio; Sonomura, Tetsuo

    2014-01-01

    Objectives To re-evaluate the fluoroscopic findings of venous malformation by cine mode cisternography. Methods Using direct injection cine-cisternography, we studied 49 venous malformation lesions in the head and neck of 30 patients who were scheduled to undergo ethanol sclerotherapy. The diameter of definitively measurable 46 lesions was 21.7 ± 10.5 mm (mean ± SD, range: 6.0–48.0 mm). The injection was continued until the draining veins were clearly observed. Outflow communications between cisterns and systemic veins were classified into Type 1, no visible drainage; Type 2, draining into a normal venous system; and Type 3, with abnormally ectatic draining veins. The topological relationships of the lesions to surrounding structures were addressed using computed tomography, magnetic resonance imaging or ultrasonogram. Treatment results were evaluated. Results The direct injection cine-cisternography showed the typical ‘bunch of grapes’ pattern, and revealed serial cisternal, followed by the appearance of outflow/draining veins in all lesions. There were no Type 1, 47 Type 2 and two Type 2 outflow pattern. Satellite lesions emerged via the communicating veins in six lesions. Of the all 49 lesions, 48 were located in or on the muscle fascia. Sclerotherapy was safely completed in all Type 2 lesions with satisfactory results, but for the Type 3 lesions treatment was limited to be partial to avoid complications. Conclusions The present study suggested that communications from venous malformation to the systemic vein are fluoroscopically confirmable. These radiographic findings were thought explainable in relation to developmental nature or facilitating process of venous malformation. PMID:23223003

  20. Retrodiaphragmatic portion of the lung: how deep is the posterior costophrenic sulcus on posteroanterior chest radiography?

    Energy Technology Data Exchange (ETDEWEB)

    Oh, J.K. [Department of Radiology, Kangnam St Mary' s Hospital, Seoul (Korea, Republic of); Ahn, M.I. [Department of Radiology, Kangnam St Mary' s Hospital, Seoul (Korea, Republic of)], E-mail: ami@catholic.ac.kr; Kim, H.L.; Park, S.H. [Department of Radiology, Kangnam St Mary' s Hospital, Seoul (Korea, Republic of); Shin, E. [Department of Preventive Medicine, The Catholic University of Korea, Seoul (Korea, Republic of)

    2009-08-15

    Aim: To determine the depth of the posterior costophrenic sulcus (CPS) on posteroanterior (PA) chest radiography in relation to the diaphragmatic dome and lateral CPS. Materials and methods: Five hundred and forty consecutive PA chest radiographs that were performed for general health screenings were retrospectively reviewed. Among them 282 radiographs were selected that met the following criteria: visualization of the inferior boundary of the posterior CPS behind the right hemidiaphragm; and no abnormal findings that affected the shape and level of the diaphragm. The selected chest radiographs were from 155 men and 127 women with a mean age of 40.7 {+-} 8.4 years. On 282 PA chest radiographs, the distances between the right diaphragmatic dome and posterior CPS (total diaphragmatic height), the diaphragmatic dome and lateral CPS (diaphragmatic dome height), and the lateral and posterior CPS (posterior CPS depth) were measured. In addition levels of the right lateral and posterior CPS were scored in relation to levels of the thoracic and lumbar spines. The relationships between the posterior CPS depth and demographic and physical data and other radiographic measurements were analysed. Results: The mean right posterior CPS depth was 29.2 {+-} 15.6 mm. The average level of the posterior CPS in relation to the spine was 13.5 {+-} 0.6, i.e., the level of lower half of the L1 vertebral body. The posterior CPS depth had a tendency to be deeper in those participants who were taller (r = 0.17, p < 0.01), had a higher body mass index (BMI; r = 0.25, p < 0.01), longer total diaphragmatic height (r = 0.55, p < 0.01), and shorter diaphragmatic dome height (r = -0.18, p < 0.01). Conclusion: As the posterior CPS is deeper than the lateral CPS by approximately 3 cm, and reaches, on average, to L1, the standard chest PA radiograph must include >3 cm below the level of lateral CPS, or should include the L1 spine.

  1. Cash's textbook of chest, heart and vascular disorders for physiotherapists

    Energy Technology Data Exchange (ETDEWEB)

    Downie, P.A.; Innocenti, D.M.; Jackson, S.E.

    1987-01-01

    This book includes a chapter on chest radiographs. A very high proportion of the patients treated by physiotherapy will have had a chest radiograph (x-ray) either because their primary disease is pulmonary or there is some long standing heart or lung illness which should be taken into account during the management of an acute problem. The chapter outlines the principles involved in reading the radiograph.

  2. The Effect of Low CD4+ Lymphocyte Count on the Radiographic Patterns of HIV Patients with Pulmonary Tuberculosis among Nigerians

    Directory of Open Access Journals (Sweden)

    Christopher Affusim

    2013-01-01

    Full Text Available Objective. To assess the radiographic features in patients with Human Immunodeficiency Virus (HIV complicated by pulmonary tuberculosis (PTB, and the association with CD4 lymphocyte count and sputum smear. Method. A prospective study was carried out on 89 HIV positive patients with PTB. The demographics, smoking history, sputum smear result, chest radiographic findings and CD4 lymphocyte count were documented. Results. Out of the 89 patients recruited in the study, 41 were males and 48 were females. Eighteen (18 patients had typical radiographic features, 60 patients had atypical radiographic features while only 11 of them had normal radiographic films. Sixty eight (68 patients had CD4 count <200 cells/mm3, 19 patients had CD4 count between 200–499 cells/mm3, while only 2 patients had CD4 count from 500 cells/mm3 upwards. The association between low CD4 count and radiographic finding was statistically significant, ( value . Sixty (60 patients had negative sputum smear for Acid and Alcohol Fast Bacilli (AAFB, while the remaining 29 patients had positive smear. The association between low CD4 count and negative smear was statistically significant ( value . Conclusion. The radiographic pattern and the result of the sputum smear for AAFB has a significant relationship and association with the immune status of patients with Human Immunodeficiency Virus (HIV complicated by pulmonary tuberculosis.

  3. Optical compensation device for chest film radiography

    Science.gov (United States)

    Gould, Robert G.; Hasegawa, Bruce H.; DeForest, Sherman E.; Schmidt, Gregory W.; Hier, Richard G.

    1990-07-01

    Although chest radiography is the most commonly performed radiographic examination and one of the most valuable and cost-effective studies in medicine it suffers from relatively high error rates in both missing pathology and false positive interpretations. Detectability of lung nodules and other structures in underpenetrated regions of the chest film can be improved by both exposure and optical compensation but current compensation systems require major capital cost or a significant change in normal clinical practice. A new optical compensation system called the " Intelligent X-Ray Illuminator" (IXI) automatically and virtually instantaneously generates a patient-specific optical unsharp mask that is projected directly on a radiograph. When a radiograph is placed on the IXI which looks much like a conventional viewbox it acquires a low-resolution electronic image of this film from which the film transmission is derived. The transmission information is inverted and blurred in an image processor to form an unsharp mask which is fed into a spatial light modulator (SLM) placed between a light source and the radiograph. The SLM tailors the viewbox luminance by decreasing illumination to underexposed (i. e. transmissive) areas of the radiograph presenting the observer with an optically unsharp-masked image. The IXI uses the original radiograph and will allow it to be viewed on demand with conventional (uniform illumination. Potentially the IXI could introduce the known beneficial aspects of optical unsharp masking into radiology at low capital

  4. Chest radiation - discharge

    Science.gov (United States)

    Radiation - chest - discharge; Cancer - chest radiation; Lymphoma - chest radiation ... When you have radiation treatment for cancer, your body goes through changes. About 2 weeks after your first treatment: It may be hard ...

  5. Chest X Ray?

    Science.gov (United States)

    ... this page from the NHLBI on Twitter. Chest X Ray A chest x ray is a fast and painless imaging test ... tissue scarring, called fibrosis. Doctors may use chest x rays to see how well certain treatments are ...

  6. MRI of the Chest

    Medline Plus

    Full Text Available ... MRI of the Chest? What is MRI of the Chest? Magnetic resonance imaging (MRI) is a noninvasive ... of page What are some common uses of the procedure? MR imaging of the chest is performed ...

  7. Radiologic findings of neonatal sepsis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sam Soo; Han, Dae Hee; Choi, Guk Myeong; Jung, Hye Won [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of); Yoon, Hye Kyung; Han, Bokyung Kim; Lee, Nam Yong [Sansung Medical Center, Seoul (Korea, Republic of)

    1997-06-01

    To review the simple radiographic and sonographic findings in infants with neonatal sepsis. We retrospectively analyzed simple chest and abdominal radiographs, and brain sonograms in 36 newborn infants (preterm : term=23 :13). With neonatal sepsis diagnosed by blood culture and clinical manifestations. Pulmonary parenchymal infiltrate excluding respiratory distress syndrome and pulmonary edema or atelectasis was found in 22 infants (61%). Paralytic ileus, hepatosplenomegaly, and necrotizing enterocolitis were present in 18(50%), 9(25%), and 1(3%) infants, respectively, while skeletal changes suggesting osteomyelitis were found in three. Brain sonography was performed in 29 infants and in four, abnormalities were seen ; these comprised three germinal matrix hemorrhages and one intraparenchymal hemorrhage. In six patients(17%) radiologic examinations revealed no abnormality. In patients with neonatal sepsis, pulmonary infiltrates and paralytic ileus were common abnormalities. Although these were nonspecific, radiologic findings may be used to supplement clinical and laboratory findings in diagnosing neonatal sepsis and planning its treatment.

  8. Lung disease assessment in primary ciliary dyskinesia: a comparison between chest high-field magnetic resonance imaging and high-resolution computed tomography findings

    Directory of Open Access Journals (Sweden)

    Iacotucci Paola

    2009-08-01

    Full Text Available Abstract Background Primary ciliary dyskinesia (PCD is associated with pulmonary involvement that requires periodical assessment. Chest high-resolution computed tomography (HRCT has become the method of choice to evaluate chronic lung disease, but entails exposure to ionizing radiation. Magnetic resonance imaging (MRI has been proposed as a potential radiation-free technique in several chest disorders. Aim of our study is to evaluate whether high-field MRI is as effective as HRCT in identifying PCD pulmonary abnormalities. We also analyzed the relationships between the severity and extension of lung disease, and functional data. Methods Thirteen PCD patients (8 children/5 adults; median age, 15.2 yrs underwent chest HRCT and high-field 3T MRI, spirometry, and deep throat or sputum culture. Images were scored using a modified version of the Helbich system. Results HRCT and MRI total scores were 12 (range, 6–20 and 12 (range, 5–17, respectively. Agreement between HRCT and MRI scores was good or excellent (r > 0.8. HRCT and MRI total scores were significantly related to forced vital capacity (r = -0.5, p = 0.05; and r = -0.7, p = 0.009, respectively and forced expiratory volume at 1 second (r = -0.6, p = 0.03; and r = -0.7, p = 0.009, respectively. Conclusion Chest high-field 3T MRI appears to be as effective as HRCT in assessing the extent and severity of lung abnormalities in PCD. MRI scores might be used for longitudinal assessment and be an outcome surrogate in future studies.

  9. Prevalence of edentulousness, prosthetic need and panoramic radiographic findings of totally and partially edentulous patients in a sample of Turkish population

    Directory of Open Access Journals (Sweden)

    Hakan Avsever

    2014-09-01

    Conclusions: Radiographic examination is crucial for pre-prosthetic evaluation on partially or totally edentulous patients that should considered as the first step to avoid the repetition of prosthetic rehabilitation, time waste, prestige loss and high treatment costs. [J Exp Integr Med 2014; 4(3.000: 220-226

  10. Hypogenetic lung syndrome in an adolescent: Imaging findings with short review

    Directory of Open Access Journals (Sweden)

    Ahamed Mohamed

    2008-01-01

    Full Text Available Hypogenetic lung syndrome is more popularly known as a scimitar syndrome (SS. It is a rare developmental lung malformation which almost always occurs on the right side. The two most constant features of this syndrome are anomalous pulmonary venous return into systemic circulation, most frequently via inferior vena cava (IVC, and lung hypoplasia. We are reporting such a case illustrating most typical and some uncommon features on chest radiograph and multislice computer tomography (MSCT of chest. Focal herniation of liver through a diaphragmatic defect presenting as an ovoid soft tissue mass in right lower paraspinal region on chest X ray mimicking sequestration is an interesting but rare finding.

  11. Prevalence and clinical significance of incidental cardiac findings in non-ECG-gated chest CT scans; Praevalenz und klinische Bedeutung inzidenteller Herzbefunde im nicht EKG-getriggerten Thorax-CT

    Energy Technology Data Exchange (ETDEWEB)

    Quentin, M.; Kroepil, P.; Lanzman, R.S.; Blondin, D.; Miese, F.; Scherer, A. [Heinrich-Heine-Universitaet Duesseldorf, Institut fuer Radiologie, Duesseldorf (Germany); Steiner, S. [Klinikum der Heinrich-Heine-Universitaet Duesseldorf, Klinik fuer Kardiologie, Pneumologie und Angiologie, Duesseldorf (Germany); Choy, G.; Abbara, S. [Massachusetts General Hospital, Harvard Medical School, Cardiovascular Imaging Section, Boston (United States)

    2011-01-15

    The purpose of this study was to evaluate the prevalence and clinical significance of incidental cardiac findings in non-ECG-gated chest CT. Non-ECG-gated chest CT examinations of 300 patients were retrospectively analyzed for incidental cardiac findings. Subsequently, these findings were evaluated for their clinical relevance by a cardiologist. A total of 107 out of 300 examined patients had 174 incidental cardiac findings including coronary calcification (90), aortic/mitral valve calcification (42), iatrogenic changes (23), pericardial effusion (6), dilatation of the heart (4), myocardial changes (3), thrombus in the left ventricle (2), constrictive pericarditis (2) and atrial myxoma (1). Of the cardiac findings 51% were described in the written report and in 53 out of the 107 patients the cardiac findings were unknown. Newly detected incidental findings from 8 patients were rated as clinically significant: pericardial effusion (4), constrictive pericarditis (1), thrombus in the left ventricle (1), atrial myxoma (1) and dilatation of the heart (1). Incidental cardiac findings are frequent in non-ECG-gated chest CT and may have a high clinical relevance. (orig.) [German] Ziel dieser Studie war es, die Praevalenz und klinische Bedeutung inzidenteller Herzbefunde im nicht EKG-getriggerten Thorax-CT ohne primaer kardiale Fragestellung zu evaluieren. Dreihundert nicht EKG-getriggerte Thorax-CT-Untersuchungen wurden retrospektiv bzgl. inzidenteller Herzbefunde analysiert. Die klinische Bedeutung wurde von einem Kardiologen bewertet. Von 300 Patienten hatten 107 insgesamt 174 Herzbefunde: Koronarsklerose (90), Aorten-/Mitralklappenverkalkung (42), iatrogene Veraenderungen (23), Perikarderguss (6), Herzvergroesserung (4), Myokardpathologien (3), Perikardverkalkungen (2), Thrombus im linken Ventrikel (2) und Myxom (1). Im radiologischen Bericht wurden 51% aller Herzbefunde beschrieben. Bei 53 der 107 Patienten mit Herzbefund waren diese klinisch nicht bekannt. Als

  12. Reversed halo sign: chest CT findings in 5 patients and cause analysis%胸部CT表现为反晕征五例并文献复习

    Institute of Scientific and Technical Information of China (English)

    路明; 陈亚红; 韩翔; 杨薇; 张静; 朱翔; 朱红; 贺蓓; 孙伯章

    2016-01-01

    Objective To describe diseases that may present with the reversed halo sign (RHS) on high-resolution CT,and therefore to improve the recognition of this thoracic radiological feature.Methods We retrospectively reviewed the HRCT scans and medical records of 5 patients who presented with RHS on chest CT from Peking University Third Hospital.With "reversed halo sign,fairy ring,atoll sign" as the Chinese and English keywords,420 cases from the literatures were also reviewed through PubMed,Wanfang and CNKI databases until August 2015.Results The 5 patients were all males,aging 19-55 years.The diagnosis of the diseases included cryptogenic organizing pneumonia (patient 1),pulmonary tuberculosis (patient 2),pulmonary infarction (patient 3),pulmonary edema (patient 4) and mycoplasma pneumonia (patient 5).Literature review showed that RHS was observed in 206 cases of infectious pulmonary diseases and 219 cases of noninfectious pulmonary diseases.Invasive fungal infection (including 59 cases of mucormycosis and 27 aspergillosis) and pulmonary tuberculosis (79 cases) predominated in infectious pulmonary diseases.However,in non-infectious pulmonary diseases,RHS was most frequently observed in organizing pneumonia (66%),sarcoidosis,lung cancer,pulmonary infarction,pulmonary edema and other interstitial lung diseases.There were some differences in the morphologic findings of RHS among invasive fungal infection,pulmonary tuberculosis and organizing pneumonia.In addition,our patient with mycoplasma pneumonia was the first case reported to present with RHS on HRCT.Condusions Although a wide spectrum of pulmonary diseases may present with RHS on chest CT,this sign is stilla characteristic thoracic radiological feature,which is more commonly found in organizing pneumonia,pulmonary tuberculosis and invasive fungal infection,and is helpful in differential diagnosis.%目的 探讨反晕征在不同肺部疾病谱的分布,提高对这一影像征的认识.方法 报道北京大学第

  13. Radiographic survey of perlite workers.

    Science.gov (United States)

    Cooper, W C

    1975-05-01

    Chest roentgenograms of 240 perlite workers employed for 1 to 23 years in the industry, showed no evidence of pneumoconiosis associated with perlite exposures. One individual, found to have simple pneumoconiosis, and one found to have complicated pneumoconiosis, had formerly been diatomaceous earth workers. Since only 28 of the men had been in the industry over 15 years and only seven for 20 years or more, continued surveillance is essential to make sure that there are no effects with more prolonged exposures. Studies of pulmonary function of the individuals who have had relatively long exposures are needed to supplement radiographic evidence.

  14. Anterior chest wall inflammation by whole body MRI in patients with spondyloarthritis: lack of association between clinical and imaging findings in a cross-sectional study

    OpenAIRE

    2012-01-01

    Introduction Inflammatory involvement of the anterior chest wall (ACW) affects the quality of life of patients with spondyloarthritis (SpA), although involvement of the ACW is often neglected on clinical and imaging evaluation. Whole-body (WB) MRI is an imaging method used to assess the ACW in addition to the sacroiliac joints and spine without inconvenience for patients. Our goals in this study were to describe the distribution of ACW inflammation by WB MRI in both early and established SpA ...

  15. MRI of the Chest

    Medline Plus

    Full Text Available ... News Physician Resources Professions Site Index A-Z Magnetic Resonance Imaging (MRI) - Chest Magnetic resonance imaging (MRI) of the chest ... limitations of MRI of the Chest? What is MRI of the Chest? Magnetic resonance imaging (MRI) is ...

  16. How do radiologists do it? The influence of experience and training on searching for chest nodules

    Energy Technology Data Exchange (ETDEWEB)

    Manning, David [Department of Medical Imaging Sciences, St Martin' s College, Lancaster LA1 3JD (United Kingdom)]. E-mail: d.manning@ucsm.ac.uk; Ethell, Susan [Department of Medical Imaging Sciences, St Martin' s College, Lancaster LA1 3JD (United Kingdom); Donovan, Tim [Department of Medical Imaging Sciences, St Martin' s College, Lancaster LA1 3JD (United Kingdom); Crawford, Trevor [Department of Psychology, Lancaster University, Lancaster (United Kingdom)

    2006-05-15

    Four observer groups with different levels of expertise were tested to investigate the nature of expert performance. The task was the detection and localisation of significant pulmonary nodules in postero-anterior views of the chest. One hundred and twenty digitised chest images were used. The observer groups were 8 experienced radiologists, 5 experienced radiographers before and after six months training in chest image interpretation, and 8 undergraduate radiography students. Eye tracking was carried out to investigate differences in visual search strategies between observers. Detection performance was measured with an Alternate Free Response Operating Characteristic technique. Performance measures showed the experienced group of radiologists plus radiographers after training were better at the task than the remainder (t-test p = 0.046). Differences were shown in the eye-tracking parameters between the groups: saccadic amplitude (ANOVA p 0.00047), number of fixations before and after training (t-test p = 0.041), and scrutiny time per decision and per film for the experienced versus the inexperienced observers (t-test p = 0.02). Visual coverage reduced with increasing level of experience but this result did not reach significance. Generally there were distinct differences in the search strategies between the experienced and inexperienced observers and we discuss the significance of these findings. We believe the results support some recent theoretical models of expert performance and that the findings may prove to be helpful in 'fast-track' educational programmes of image interpretation for non-radiology practitioners.

  17. The radiographic and MRI features of gout referred as suspected soft tissue sarcoma: a review of the literature and findings from 27 cases

    Energy Technology Data Exchange (ETDEWEB)

    Upadhyay, Neil [Imperial College Healthcare NHS Trust, Imaging Department, London (United Kingdom); Saifuddin, Asif [The Royal National Orthopaedic Hospital NHS Trust, Department of Radiology, Stanmore, Middlesex (United Kingdom)

    2014-09-24

    Gout has been termed the ''great mimicker'', for its ability to resemble other pathological conditions. Whilst the typical imaging features of gout are well described, there is a relative paucity of literature describing more challenging cases of gout, where a malignant tumour has been considered in the differential diagnosis. The aim of this article is to provide an overview of the radiographic and MRI features of 27 cases of gout that were initially referred to our centre as suspected soft tissue sarcoma, alongside a review of the literature. (orig.)

  18. Digital Paper Prints as Replacement for LASER Films: A Study of Intra-Observer Agreement for Wrist Radiographic Findings in Rickets

    Science.gov (United States)

    Jain, Abhinav; Anand, Surinder Pal Singh; Dang, Archana

    2016-01-01

    Introduction Replacement of conventional LASER films with digital paper prints as supplement to radiology reports may serve as an economical and environment friendly method. However, it is essential that such a change does not compromise patient’s intended diagnostic outcome. Aim The aim of this study was to assess the reliability and acceptability of digital paper prints for the radiographic images by the treating physicians and radiologists. Materials and Methods This observational analytical study was done at a tertiary care hospital of New Delhi, India. A total of 58 consecutively ordered wrist radiographs of paediatric patients (6 months to 12 years of age) for ruling out rickets were retrieved from the PACS (Picture Archiving and Communication System). These 58 radiographs, out of which 21 (36.2%) had radiological evidence of rickets over PACS were printed on two different media i.e., LASER films and glossy photographic paper. An objective scoring for the severity of rickets was done on both LASER films and paper prints by six observers independently. Overall comfort level with paper prints was rated on a 1-5 point Likert scale. Data was analysed using STATA 14.0 (Stata Corp, College Station, TX). Results Intra-observer percentage agreement and value of Cohen’s kappa for PACS vs. LASER films and PACS vs. paper prints was equal i.e., 98.3% and 0.97, respectively. Intra-observer agreement between LASER films and paper prints for all six observers was excellent, ranging from 0.92 to 1.00; percentage agreement ranging from 94.8% to 100%. Fracture of ulna/radius present in 4 sets of the X-rays was well demonstrated in both LASER films and paper prints. Comfort level with paper prints was rated as 5 out of 5 by all due to no requirement of any special illuminated view box and dark room. Conclusion This study concludes that the use of paper prints may serve as a reliable alternative to LASER films to communicate the report of wrist radiographs for the treating

  19. Anterior chest wall involvement in patients with pustulosis palmoplantaris.

    Science.gov (United States)

    Jurik, A G

    1990-01-01

    With the aim of determining the frequency and radiographic features of anterior chest wall involvement in patients with pustulosis palmoplantaris, a questionnaire was sent to 107 patients. Ninety-three patients returned the questionnaire, five of whom were excluded from further analysis due to the appearance of psoriatic lesions. Twenty-five (28%) of the remaining 88 patients reported pain and/or swelling of joints or bones in the anterior chest wall. All were examined radiographically, using tomography, and a group of 20 patients without anterior chest wall complaints were examined similarly. Sixteen of the patients with, but none of the patients without, complaints were found to have arthro-osteitis of the anterior chest wall, consisting of diffuse sclerosis of the manubrium sterni in one patient, localized sclerosis in seven patients, and sequelae of arthritis of the sternoclavicular, upper sternocostal and/or manubriosternal joint in eight patients.

  20. Bronchogenic cyst: an unexpected cause of respiratory complaints and a solid chest mass in an infant

    Directory of Open Access Journals (Sweden)

    Ayse Esin Kibar

    2013-04-01

    Full Text Available Bronchogenic cysts are congenital anomalies that result from abnormal budding of the tracheobronchial tree. Congenital bronchogenic cystic disease of the lung in infant is rare, generally benign lesions, which tend to produce few to no symptoms.The cyst can produce cough and dyspnea. Chest, radiograph shows usually a round or oval soft tissue mass in the lower mediastinum. They can occur in infants and children, they are frequently detected coincidentally. In this article, we present a case with bronchogenic cyst of the right middle lobe (14 month causing cough, dyspnea and radiologic findings. [Cukurova Med J 2013; 38(2.000: 338-341

  1. Chest X-Ray

    Medline Plus

    Full Text Available ... breath, persistent cough, fever, chest pain or injury. It may also be useful to help diagnose and ... have some concerns about chest x-rays. However, it’s important to consider the likelihood of benefit to ...

  2. Young Woman with a Fever and Chest Pain

    Directory of Open Access Journals (Sweden)

    Kristin H. Dwyer, MD, MPH

    2016-03-01

    Full Text Available A 26-year-old female presented to the emergency department with three days of subjective fevers, dry cough and pleuritic chest discomfort. On exam, her vital signs were significant for a heart rate of 106/minute and oxygen saturation of 95% on room air. Her lung exam revealed decreased breath sounds at the right base. A bedside lung ultrasound and a chest radiograph were performed (Figure 1a, Figure 2, and Video.

  3. Management of flail chest.

    OpenAIRE

    Miller, H A; Taylor, G.A.; Harrison, A. W.; Maggisano, R.; Hanna, S.; de Lacy, J. L.; Shulman, H.

    1983-01-01

    This paper compares the management of two groups of patients with flail chest. The 25 patients in group 1 had a flail chest without other significant injuries or shock, whereas the 57 in group 2 had a flail chest with multiple injuries, shock or both. The group 1 patients were treated with repeated multiple intercostal nerve blocks or high segmental epidural analgesia, oxygen, intensive chest physiotherapy, fluid restriction, furosemide diuretics, methylprednisolone sodium succinate and collo...

  4. Malignant tumors associated with chronic empyema. The role of CT and MRI for radiographic diagnosis

    Energy Technology Data Exchange (ETDEWEB)

    Kushihashi, Tamio; Seino, Noritaka; Kodaira, Yasunaga [Showa Univ., Tokyo (Japan). School of Medicine] [and others

    1996-01-01

    We reviewed CT and MRI findings of malignant tumors secondary to chronic empyema and evaluated the usefulness of these imaging modalities for diagnosis in 10 patients. In only three cases, chest radiograph suggested presence of malignant tumor. In seven cases, CT showed soft-tissue mass in addition to chronic pleuritis. In three of 4 cases, MRI demonstrated the detail of the lesion more clearly than CT. In conclusion, CT was useful for detection of malignant tumor in the most of the cases. However, MRI was more useful than CT since more definitive diagnosis could be obtained. (author).

  5. American College of Chest Physicians

    Science.gov (United States)

    ... Master Fellows Staff & Contact Us CHEST Newsroom Staff Job Opportunities at CHEST Contact Us Industry Support Industry Support ... of Global Governors Master Fellows CHEST Newsroom Staff Job Opportunities at CHEST Contact Us Industry Support Industry Advisory ...

  6. Peritoneal tuberculosis: radiographic diagnosis

    Directory of Open Access Journals (Sweden)

    Carolina Ospina-Moreno

    2014-12-01

    Full Text Available Peritoneal tuberculosis (TB is an extrapulmonary form of presentation of tuberculosis. HIV infection is a primary risk factor for this condition. Diagnosis requires microbiological or histopathological confirmation in addition to supporting radiological imaging studies. Abdominal ultrasonography and CT are useful to obtain a radiographic diagnosis, with typical findings including diffuse peritoneal thickening, presence of ascites in varying volumes, adenopathies, and caseating nodes. We report 2 cases of patients with ascites and nodular peritoneal thickening on diagnostic images, as well as high CA-125 levels in laboratory tests. In both patients, a diagnosis of peritoneal tuberculosis was reached following a US-guided peritoneal biopsy.

  7. Predictors of Cardiogenic and Non-Cardiogenic Causes in Cases with Bilateral Chest Infiltrates

    OpenAIRE

    Lee, Yeon Joo; Lee,Jinwoo; Park, Young Sik; Lee, Sang-min; Yim, Jae-Joon; Yoo, Chul-Gyu; Kim, Young Whan; Han, Sung Koo; Lee, Chang-Hoon

    2013-01-01

    Background Differentiating cardiogenic pulmonary edema from other bilateral lung diseases such as pneumonia is frequently difficult. We conducted a retrospective study to identify predictors for cardiogenic pulmonary edema and non-cardiogenic causes of bilateral lung infiltrates in chest radiographs. Methods The study included patients who had newly developed bilateral lung infiltrates in chest radiographs and patients who underwent echocardiography. Cases were divided into two groups based o...

  8. Chest radiography practice in critically ill patients: a postal survey in the Netherlands

    Directory of Open Access Journals (Sweden)

    Korevaar Johanna C

    2006-07-01

    Full Text Available Abstract Background To ascertain current chest radiography practice in intensive care units (ICUs in the Netherlands. Methods Postal survey: a questionnaire was sent to all ICUs with > 5 beds suitable for mechanical ventilation; pediatric ICUs were excluded. When an ICU performed daily-routine chest radiographs in any group of patients it was considered to be a "daily-routine chest radiography" ICU. Results From the number of ICUs responding, 63% practice a daily-routine strategy, in which chest radiographs are obtained on a daily basis without any specific reason. A daily-routine chest radiography strategy is practiced less frequently in university-affiliated ICUs (50% as compared to other ICUs (68%, as well as in larger ICUs (> 20 beds, 50% as compared to smaller ICUs (P > 0.05. Remarkably, physicians that practice a daily-routine strategy consider daily-routine radiographs helpful in guiding daily practice in less than 30% of all performed radiographs. Chest radiographs are considered essential for verification of the position of invasive devices (81% and for diagnosing pneumothorax, pneumonia or acute respiratory distress syndrome (82%, 74% and 69%, respectively. On demand chest radiographs are obtained after introduction of thoracic drains, central venous lines and endotracheal tubes in 98%, 84% and 75% of responding ICUs, respectively. Chest films are also obtained in case of ventilatory deterioration (49% of responding ICUs, and after cardiopulmonary resuscitation (59%, tracheotomy (58% and mini-tracheotomy (23%. Conclusion There is notable lack of consensus on chest radiography practice in the Netherlands. This survey suggests that a large number of intensivists may doubt the value of daily-routine chest radiography, but still practice a daily-routine strategy.

  9. Accuracy of chest radiography versus chest computed tomography in hemodynamically stable patients with blunt chest trauma

    Institute of Scientific and Technical Information of China (English)

    Mojtaba Chardoli; Toktam Hasan-Ghaliaee; Hesam Akbari; Vafa Rahimi-Movaghar

    2013-01-01

    Objective:Thoracic injuries are responsible for 25% of deaths of blunt traumas.Chest X-ray (CXR) is the first diagnostic method in patients with blunt trauma.The aim of this study was to detect the accuracy of CXR versus chest computed tomograpgy (CT) in hemodynamically stable patients with blunt chest trauma.Methods:Study was conducted at the emergency department of S ina Hospital from March 2011 to March 2012.Hemodynamically stable patients with at least 16 years of age who had blunt chest trauma were included.All patients underwent the same diagnostic protocol which consisted of physical examination,CXR and CT scan respectively.Results:Two hundreds patients (84% male and 16% female) were included with a mean age of(37.9±13.7) years.Rib fracture was the most common finding of CXR (12.5%) and CT scan (25.5%).The sensitivity of CXR for hemothorax,thoracolumbar vertebra fractures and rib fractures were 20%,49% and 49%,respectively.Pneumothorax,foreign body,emphysema,pulmonary contusion,liver hematoma and sternum fracture were not diagnosed with CXR alone.Conclusion:Applying CT scan as the first-line diagnostic modality in hemodynamically stable patients with blunt chest trauma can detect pathologies which may change management and outcome.

  10. Accuracy of chest radiography versus chest computed tomography in hemodynamically stable patients with blunt chest trauma

    Directory of Open Access Journals (Sweden)

    Chardoli Mojtaba

    2013-12-01

    Full Text Available 【Abstract】 Objective: Thoracic injuries are respon- sible for 25% of deaths of blunt traumas. Chest X-ray (CXR is the first diagnostic method in patients with blunt trauma. The aim of this study was to detect the accuracy of CXR versus chest computed tomograpgy (CT in hemodynami- cally stable patients with blunt chest trauma. Methods: Study was conducted at the emergency department of Sina Hospital from March 2011 to March 2012. Hemodynamically stable patients with at least 16 years of age who had blunt chest trauma were included. All patients underwent the same diagnostic protocol which consisted of physical examination, CXR and CT scan respectively. Results: Two hundreds patients (84% male and 16% female were included with a mean age of (37.9±13.7 years. Chin J Traumatol 2013;16(6:351-354 Rib fracture was the most common finding of CXR (12.5% and CT scan (25.5%. The sensitivity of CXR for hemothorax, thoracolumbar vertebra fractures and rib fractures were 20%, 49% and 49%, respectively. Pneumothorax, foreign body, emphysema, pulmonary contusion, liver hematoma and ster- num fracture were not diagnosed with CXR alone. Conclusion: Applying CT scan as the first-line diag- nostic modality in hemodynamically stable patients with blunt chest trauma can detect pathologies which may change management and outcome. Key words: Radiography; Thoracic injuries; Tomography, X-ray computed

  11. Total elbow arthroplasty: a radiographic outcome study

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Xue Susan [University of Washington, Department of Radiology, Box 357115, Seattle, WA (United States); Petscavage-Thomas, Jonelle M. [Penn State Hershey Medical Center, Department of Radiology, Hershey, PA (United States); Ha, Alice S. [University of Washington, Department of Radiology, Box 354755, Seattle, WA (United States)

    2016-06-15

    Total elbow arthroplasty (TEA) is becoming a popular alternative to arthrodesis for patients with end-stage elbow arthrosis and comminuted distal humeral fractures. Prior outcome studies have primarily focused on surgical findings. Our purpose is to determine the radiographic outcome of TEA and to correlate with clinical symptoms such as pain. This is an IRB-approved retrospective review from 2005 to 2015 of all patients with semiconstrained TEA. All available elbow radiographs and clinical data were reviewed. Data analysis included descriptive statistics and Kaplan-Meier survival curves for radiographic and clinical survival. A total of 104 total elbow arthroplasties in 102 patients were reviewed; 75 % were in women and the mean patient age was 63.1 years. Mean radiographic follow-up was 826 days with average of four radiographs per patient. Seventy TEAs (67 %) developed radiographic complications, including heterotopic ossification (48 %), perihardware lucency (27 %), periprosthetic fracture (23 %), hardware subluxation/dislocation (7 %), polyethylene wear (3 %), and hardware fracture/dislodgement (3 %); 56 patients (55 %) developed symptoms of elbow pain or instability and 30 patients (30 %) underwent at least one reoperation. In patients with radiographic complications, 66 % developed elbow pain, compared to 19 % of patients with no radiologic complications (p = 0.001). Of the patients with radiographic complications, 39 % had at least one additional surgery compared to 0 % of patients without radiographic complications (p = 0.056). Radiographic complications are common in patients after total elbow arthroplasty. There is a strong positive association between post-operative radiographic findings and clinical outcome. Knowledge of common postoperative radiographic findings is important for the practicing radiologist. (orig.)

  12. Reference Neutron Radiographs of Nuclear Reactor Fuel

    DEFF Research Database (Denmark)

    Domanus, Joseph Czeslaw

    1986-01-01

    Reference neutron radiographs of nuclear reactor fuel were produced by the Euraton Neutron Radiography Working Group and published in 1984 by the Reidel Publishing Company. In this collection a classification is given of the various neutron radiographic findings, that can occur in different parts...... of pelletized, annular and vibro-conpacted nuclear fuel pins. Those parts of the pins are shown where changes of appearance differ from those for the parts as fabricated. Also radiographs of those as fabricated parts are included. The collection contains 158 neutron radiographs, reproduced on photographic paper...

  13. Clinical efficacy, radiographic and safety findings through 5 years of subcutaneous golimumab treatment in patients with active psoriatic arthritis: results from a long-term extension of a randomised, placebo-controlled trial (the GO-REVEAL study)

    Science.gov (United States)

    Kavanaugh, Arthur; McInnes, Iain B; Mease, Philip; Krueger, Gerald G; Gladman, Dafna; van der Heijde, Désirée; Zhou, Yiying; Lu, Jiandong; Leu, Jocelyn H; Goldstein, Neil; Beutler, Anna

    2014-01-01

    Objectives Assess golimumab's long-term efficacy/safety in psoriatic arthritis (PsA). Methods Adults with active PsA (≥3 swollen and tender joints, active psoriasis) were randomly assigned to subcutaneous placebo, golimumab 50 mg, or golimumab 100 mg every 4 weeks (q4wks) through wk20. All patients received golimumab 50 mg or 100 mg q4wks from wk24 forward. Methotrexate was allowed and taken by approximately half the patients. Findings through 5 years are reported herein. Efficacy assessments included ≥20% improvement in American College of Rheumatology (ACR20) response, C-reactive-protein-based, 28-joint-count Disease Activity Score (DAS28-CRP) response, ≥75% improvement in Psoriasis Area and Severity Index (PASI75) scores, and PsA-modified Sharp/van der Heijde scores (SHSs). Results 126/405 (31%) randomised patients discontinued treatment through wk252. Golimumab was effective in maintaining clinical improvement through year-5 (ACR20: 62.8–69.9%, DAS28-CRP: 75.2-84.9% for randomised patients; PASI75: 60.8–72.2% among randomised patients with ≥3% body surface area involvement) and inhibiting radiographic progression (mean changes in PsA-modified SHS: 0.1–0.3) among patients with radiographic data. While concomitant methotrexate did not affect ACR20/PASI75, it appeared to reduce radiographic progression. No new safety signals were identified. Antibodies-to-golimumab occurred in 1.8%/10.0% of patients with/without methotrexate). Conclusions Long-term golimumab safety/efficacy in PsA was demonstrated through 5 years. Trial registration number NCT00265096. PMID:24748630

  14. 肉芽肿性乳腺炎的临床表现与X线及MRI诊断特点%The Clinical Radiographic Findings and Magnetic Resonance Imaging Features of 31 Patients with Granulomatous Mastitis

    Institute of Scientific and Technical Information of China (English)

    朱丽萍; 贾文霄; 倪多; 李涌涛; 吴涛; 赵倩

    2011-01-01

    目的 探讨肉芽肿性乳腺炎(granulomatous mastitis,GM)的临床表现与X线及MRI诊断特点.资料与方法 对31例经病理证实的GM患者的临床表现与X线及MRI资料进行回顾性分析.结果 临床表现为乳房肿块短期内迅速增大,边缘不清与皮肤有粘连,部分伴有腋窝淋巴结肿大;钼靶X线表现呈多样性,病灶呈等密度或稍高于腺体密度结节状不规则影多见,部分显示局限性敛密影结构紊乱,边缘不清、毛糙分叶及不规则状;MRT1WI呈等或高信号,T2WI呈高信号,增强扫描病变呈片状强化,高于周围正常腺体,边缘呈渐进性强化.结论 GM临床表现缺乏特异性,与乳腺X线与MRI相结合有助于准确诊断.%Objective To explore the clinical radiographic findings and magnetic resonance imaging features of granulomatous mastitis. Materials and Methods The clinical radiographic findings and magnetic resonance imaging data from 31 patients with granulomatous mastitis proved by pathological results were analyzed retrospectively. Results The clinical findings of GM were quickly augmentation of lump in breast in short time, ill-defined margin and adherence to skin, some lesions often accompanied by intumesce of axillary nodes. The radiographic findings of GM demonstrated diversity. The lesions' density were found as isodense or higher than glands density with irregular tubercle. Some lesions of GM displayed as architeetual distortion of local asymmetric density, ill-defined margin, ruffled, lobulated and irregular. The MR signs of GM lesions included hyper or isointensity signal on T1 WI images, hyperintensity signal on T2 WI images. The granulomatous mastitis lesions appeared pathcy enhancement, which was higher than that of normal glands adjacent to tumor, the border appeared gradually enhancement. Conclusion Granulomatous mastitis has no specific clinical findings, combination molybdenum target radiography and magnetic resonance imaging is helpful for the

  15. Detection and labeling ribs on expiration chest radiographs

    Science.gov (United States)

    Park, Mira; Jin, Jesse S.; Wilson, Laurence S.

    2003-06-01

    Typically, inspiration is preferred when xraying the lungs. The x-ray technologist will ask a patient to be still and to take a deep breath and to hold it. This not only reduces the possibility of a blurred image but also enhances the quality of the image since air-filled lungs are easier to see on x-ray film. However, inspiration causes low density in the inner part of lung field. That means that ribs in the inner part of lung field have lower density than the other parts nearer to the border of the lung field. That is why edge detection algorithms often fail to detect ribs. Therefore to make rib edges clear we try to produce an expiration lung field using a 'hemi-elliptical cavity.' Based on the expiration lung field, we extract the rib edges using canny edge detector and a new connectivity method, called '4 way with 10-neighbors connectivity' to detect clavicle and rib edge candidates. Once the edge candidates are formed, our system selects the best candidates using knowledge-based constraints such as a gradient, length and location. The edges can be paired and labeled as superior rib edge and inferior rib edge. Then the system uses the clavicle, which is obtained in a same method for the rib edge detection, as a landmark to label all detected ribs.

  16. A Clinical Trial of a Computer Diagnosis Program for Chest Pain

    Science.gov (United States)

    1990-12-07

    infection, myocardial infarction, and non-specific chest pain. The category " Angina " included both stable and unstable angina . Chest infection was...is suitable for use by corpsmen at sea. THE FINDINGS 132 patients with confirmed diagnoses of chest pain (myocardial infarction, angina , chest ...sea with chest pain. The diagnostic accuracy of the program for three common and serious causes of chest pain -- myocardial infarction (MI), angina

  17. Radiographic study of severe Influenza-A (H1N1) disease in children

    Energy Technology Data Exchange (ETDEWEB)

    Zhao Cailei, E-mail: zhaocailei197866@163.com [Department of Radiology, Shenzhen Children' s Hospital, No. 7019, Yitian Road, Futian District, Shenzhen 518026 (China); Gan Yungen, E-mail: mickeyym@yahoo.cn [Department of Radiology, Shenzhen Children' s Hospital, No. 7019, Yitian Road, Futian District, Shenzhen 518026 (China); Sun Jie, E-mail: sunxixi@21cn.com [Department of Radiology, Shenzhen Children' s Hospital, No. 7019, Yitian Road, Futian District, Shenzhen 518026 (China)

    2011-09-15

    Objective: To characterize the radiographic findings of pediatric patients with severe Influenza-A (H1N1) disease. Methods: A retrospective study of data from chest X-ray, CT and MRI exam of 29 pediatric patients treated in intensive care unit for severe Influenza-A (H1N1) disease. Results: Disease developed quickly at early stage. Here are four types of radiographic findings. The disease continued to progress for 2-3 days and X-ray showed that all 29 patients had increased solid lesions with the existence of interstitial lesions. Four days later, all lung lesions showed absorption to certain degree. Fifteen days later, X-ray and CT showed complete or significant absorption in 19 cases (85.5%); delayed recovery was identified in 8 cases (27.6%), pulmonary fibrosis was found in 3 cases (10.3%), and 3 patients (10.3%) died. But the latter identified more lesions. Cranial CT and MRI were performed for 8 patients who had neurological symptoms. Of them, 3 cases (10.3%) were abnormal, showed symmetrical long T1 and T2 signal shadow in bilateral thalamus and longer T1 and T2 signals in the between. 3 cases had autopsy completed. Conclusion: The severe Influenza-A (H1N1) among children progression was generally rapid in the first 3 days. The overall radiographic findings are similar to acute respiratory distress syndrome (ARDS). A small portion of the patients occurred acute necrotizing encephalopathy and plastic bronchitis.

  18. A Case of Sarcoidosis with Unusual Radiographic Findings that Developed 5 Years after Silicone Augmentation Mammoplasty Complicated by Miliary Tuberculosis during Corticosteroid Treatment

    Directory of Open Access Journals (Sweden)

    Tomoko Miyashita

    2011-01-01

    Full Text Available A 54-year-old woman with a past history of silicone augmentation mammoplasty was admitted with fever and dyspnea with diffuse interstitial shadows on computed tomography (CT. Although radiological findings were atypical, we diagnosed sarcoidosis by laboratory, microbiological, and bronchoalveolar lavage fluid analysis. Corticosteroids ameliorated the condition, but she had recurrent of fever and CT revealed miliary nodules while interstitial shadows disappeared. Liver biopsy showed that noncaseating granuloma and Ziehl-Neelsen stain was positive. We diagnosed miliary tuberculosis which developed during corticosteroid therapy. Antituberculotic therapy resulted in favorable outcome. Possibility exists that onset of sarcoidosis was induced by mammoplasty, namely, human adjuvant disease.

  19. CT of the chest in suspected child abuse using submillisievert radiation dose

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez, Thomas R.; Seibert, J.A.; Stein-Wexler, Rebecca [Medical Center Children' s Hospital, Division of Pediatric Radiology, University of California-Davis, Sacramento, CA (United States); Lee, Justin S. [University of California-Davis, Department of Radiology, Sacramento, CA (United States); Coulter, Kevin P. [Medical Center Children' s Hospital, Department of Pediatrics, University of California-Davis, Sacramento, CA (United States)

    2015-07-15

    The cornerstone of child abuse imaging is the skeletal survey, but initial imaging with radiographs may not demonstrate acute and non-displaced fractures, especially those involving the ribs. Given the high mortality of undiagnosed non-accidental trauma, timely diagnosis is crucial. CT is more sensitive in assessing rib fractures; however the effective radiation dose of a standard chest CT is high. We retrospectively identified four children (three boys, one girl; age range 1-4 months) admitted between January 2013 and February 2014 with high suspicion for non-accidental trauma from unexplained fractures of the long bones; these children all had CT of the chest when no rib fractures were evident on the skeletal survey. The absorbed radiation dose estimates for organs and tissue from the four-view chest radiographs and subsequent CT were determined using Monte Carlo photon transport software, and the effective dose was calculated using published tissue-weighting factors. In two children, CT showed multiple fractures of the ribs, scapula and vertebral body that were not evident on the initial skeletal survey. The average effective dose for a four-view chest radiograph across the four children was 0.29 mSv and the average effective dose for the chest CT was 0.56 mSv. Therefore the effective dose of a chest CT is on average less than twice that of a four-view chest radiograph. Our protocol thus shows that a reduced-dose chest CT may be useful in the evaluation of high specificity fractures of non-accidental trauma when the four-view chest radiographs are negative. (orig.)

  20. Radiographic constant exposure technique

    DEFF Research Database (Denmark)

    Domanus, Joseph Czeslaw

    1985-01-01

    The constant exposure technique has been applied to assess various industrial radiographic systems. Different X-ray films and radiographic papers of two producers were compared. Special attention was given to fast film and paper used with fluorometallic screens. Radiographic image quality...... was tested by the use of ISO wire IQI's and ASTM penetrameters used on Al and Fe test plates. Relative speed and reduction of kilovoltage obtained with the constant exposure technique were calculated. The advantages of fast radiographic systems are pointed out...

  1. Clinical and radiographic factors do not accurately diagnose smear-negative tuberculosis in HIV-infected inpatients in Uganda: a cross-sectional study.

    Directory of Open Access Journals (Sweden)

    J Lucian Davis

    Full Text Available BACKGROUND: Although World Health Organization guidelines recommend clinical judgment and chest radiography for diagnosing tuberculosis in HIV-infected adults with unexplained cough and negative sputum smears for acid-fast bacilli, the diagnostic performance of this approach is unknown. Therefore, we sought to assess the accuracy of symptoms, physical signs, and radiographic findings for diagnosing tuberculosis in this population in a low-income country with a high incidence of tuberculosis. METHODOLOGY: We performed a cross-sectional study enrolling consecutive HIV-infected inpatients with unexplained cough and negative sputum smears for acid-fast bacilli at Mulago Hospital in Kampala, Uganda. Trained medical officers prospectively collected data on standard symptoms and signs of systemic respiratory illness, and two radiologists interpreted chest radiographs in a standardized fashion. We calculated positive- and negative-likelihood ratios of these factors for diagnosing pulmonary tuberculosis (defined when mycobacterial cultures of sputum or bronchoalveolar lavage fluid were positive. We used both conventional and novel regression techniques to develop multivariable prediction models for pulmonary tuberculosis. PRINCIPAL FINDINGS: Among 202 enrolled HIV-infected adults with negative sputum smears for acid-fast bacilli, 72 (36% had culture-positive pulmonary tuberculosis. No single factor, including respiratory symptoms, physical findings, CD4+ T-cell count, or chest radiographic abnormalities, substantially increased or decreased the likelihood of pulmonary tuberculosis. After exhaustive testing, we were also unable to identify any combination of factors which reliably predicted bacteriologically confirmed tuberculosis. CONCLUSIONS AND SIGNIFICANCE: Clinical and radiographic criteria did not help diagnose smear-negative pulmonary tuberculosis among HIV-infected patients with unexplained cough in a low-income setting. Enhanced diagnostic

  2. Chest computed tomography

    DEFF Research Database (Denmark)

    Loeve, Martine; Krestin, Gabriel P.; Rosenfeld, Margaret

    2013-01-01

    Clinical trials for the treatment of cystic fibrosis (CF) lung disease are important to test and optimize new therapeutic interventions. To evaluate the effect of these interventions, sensitive and accurate outcome measures are needed. The most commonly used endpoints are spirometric variables...... are not suitable to study CF lung disease in young children. Chest computed tomography (CT) holds great promise for use as a sensitive surrogate endpoint in CF. A large body of evidence has been produced to validate the use of chest CT as primary endpoint to study CF lung disease. However, before chest CT can...

  3. Relationship of lung function to radiographic reading (ILO) in patients with asbestos related lung disease.

    Science.gov (United States)

    Cotes, J E; King, B

    1988-10-01

    The 1980 International Labour Office (ILO) classification of posteroanterior chest radiographs was used to obtain the scores for profusion of small opacities and pleural abnormalities of 172 men with confirmed or suspected disease of the lungs due to asbestos. After allowance had been made for age, stature, and smoking habit the quantitative score for area of diffuse pleural thickening seen in profile on both lateral chest walls contributed to reductions in inspiratory capacity, expiratory reserve volume, and forced expiratory flow rates. Occlusion of one or both costophrenic angles in the presence of diffuse thickening was associated with further reduction in inspiratory capacity. Profusion of small opacities was associated with a reduction in transfer factor. Diffuse pleural thickening and occlusion of costophrenic angles were associated with relatively low values for the forced expiratory flow rates (MEF50FVC) and FEV1/FVC, whereas small opacities were associated with relatively high values. Thus overall increased, normal, or reduced values of MEF50FVC and FEV1/FVC might occur, depending on the distribution of the radiographic abnormalities. The findings contribute to the validation of the ILO pleural scores; those for diffuse pleural thickening and occlusion of costophrenic angles should be used jointly with the scores for profusion of parenchymal small opacities in interpreting the lung function of persons exposed to asbestos.

  4. Chest tube insertion - slideshow

    Science.gov (United States)

    ... presentations/100008.htm Chest tube insertion - series—Normal anatomy To use the sharing features ... pleural space is the space between the inner and outer lining of the lung. It is normally very thin, and lined only ...

  5. MRI of the Chest

    Medline Plus

    Full Text Available ... of the chest uses a powerful magnetic field, radio waves and a computer to produce detailed pictures ... medical conditions. MRI uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed ...

  6. MRI of the Chest

    Medline Plus

    Full Text Available ... primarily used to assess abnormal masses such as cancer and determine the size, extent and degree of ... chest is performed to: assess abnormal masses, including cancer of the lungs or other tissues, which either ...

  7. MRI of the Chest

    Medline Plus

    Full Text Available ... detailed pictures of the structures within the chest. It is primarily used to assess abnormal masses such ... and determine the size, extent and degree of its spread to adjacent structures. It’s also used to ...

  8. Neonatal Chest Wall Rhabdomyosarcoma.

    Science.gov (United States)

    Feldman, Michael; Steiner, Zvi; Groisman, Gabriel; Nadir, Erez

    2015-06-01

    An infant was born at term with a huge chest mass diagnosed as rhabdomyosarcoma. Treatment consisted of surgical resection and chemotherapy. We describe this very rare congenital mass and the problematic therapeutic management of such a tumor in a newborn.

  9. Neonatal Chest Wall Rhabdomyosarcoma

    OpenAIRE

    Feldman, Michael; Steiner, Zvi; Groisman, Gabriel; Nadir, Erez

    2015-01-01

    An infant was born at term with a huge chest mass diagnosed as rhabdomyosarcoma. Treatment consisted of surgical resection and chemotherapy. We describe this very rare congenital mass and the problematic therapeutic management of such a tumor in a newborn.

  10. A method to optimize the processing algorithm of a computed radiography system for chest radiography.

    Science.gov (United States)

    Moore, C S; Liney, G P; Beavis, A W; Saunderson, J R

    2007-09-01

    A test methodology using an anthropomorphic-equivalent chest phantom is described for the optimization of the Agfa computed radiography "MUSICA" processing algorithm for chest radiography. The contrast-to-noise ratio (CNR) in the lung, heart and diaphragm regions of the phantom, and the "system modulation transfer function" (sMTF) in the lung region, were measured using test tools embedded in the phantom. Using these parameters the MUSICA processing algorithm was optimized with respect to low-contrast detectability and spatial resolution. Two optimum "MUSICA parameter sets" were derived respectively for maximizing the CNR and sMTF in each region of the phantom. Further work is required to find the relative importance of low-contrast detectability and spatial resolution in chest images, from which the definitive optimum MUSICA parameter set can then be derived. Prior to this further work, a compromised optimum MUSICA parameter set was applied to a range of clinical images. A group of experienced image evaluators scored these images alongside images produced from the same radiographs using the MUSICA parameter set in clinical use at the time. The compromised optimum MUSICA parameter set was shown to produce measurably better images.

  11. Persistent candidemia in major burn patients: radiologic findings of the thorax

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eil Seong; Lee, Kwan Seop; Kang, Ik Won [Hallym Univ. College of Medicine, Seoul (Korea, Republic of)

    1997-04-01

    To describe radiologic findings of burn-associated persistent candidemia of the thorax. This study included 42 patients with major burns in whom blood culture had shown the presence for more than 24 hours of persistent candidemia. The duration of positive culture for candidiasis ranged from two to 67 days(mean, 15 days). Radiographic(n=42) and thin-section CT findings(n=13) were retrospectively analyzed. The onset, pattern, size, distribution and persistence of parenchymal abnormalities as well as the presence or absence of pleural effusions, mediastinal lymphadenopathy and cardiomegaly were assessed. On chest radiographs, positive findings were noticed in 61.9%(26/42) and on thin-section CT, in 76.9%(10/13). The most frequent radiographic finding was pulmonary nodule(s), observed in 14 patients(33.3%); in 13, these were bilateral. Bronchovascular bundle thickening(n=6, 14.3%), consolidation(n=4, 9.5%), cardiomegaly(n=6, 14.3%) and pleural effusion(n=4, 9.5%) were also observed. Those lesions appeared eight to 129 days(mean, 33 days) after the burn. Radiographic abnormalities persisted for seven to 115(mean, 35) days, regardless of the treatment. Thin-section CT showed parenchymal abnormalities in 10/13 patients(76.9%) and subpleural nodules of less than 1cm in diameter and without halo in all patients. Cardiomegaly, pleural effusion and mediastinal adenopathy were observed on CT in 5(38.5%), 4(30.8%) and 2(15.4%) of the 13 patients, respectively. In a high proportion of patients with burn-associated candidemia, chest radiograph and thin-section CT findings were positive. The most frequent radiographic parenchymal abnormality was multiple bilateral nodules.

  12. Os odontoideum: a significant radiographic finding

    Energy Technology Data Exchange (ETDEWEB)

    Choit, Rachel L.; Reilly, Christopher W. [BC Children' s Hospital, Department of Orthopaedics, Vancouver, BC (Canada); Jamieson, Douglas H. [BC Children' s Hospital, Department of Radiology, Vancouver (Canada)

    2005-08-01

    Os odontoideum can lead to instability of the atlantoaxial joint and places the spinal cord at significant risk for acute catastrophic events after minor trauma or chronic neurological change. We present two cases of os odontoideum in pediatric patients that were not appreciated at earlier remote imaging but were, in retrospect, detectable. One patient presented with an acute spinal cord injury. Incorporating assessment of dens integrity into the evaluation algorithm for all pediatric cervical spine studies should lead to early detection of os odontoideum lesions and allow referral to appropriate clinical spinal services for evaluation, surveillance and possible surgery to prevent future complications. (orig.)

  13. IMPROVED MARKING AND CHARACTERIZING OF PULMONARY NODULES ON DIGITAL RADIOGRAPHS USING A COMPUTER-AIDED DIAGNOSIS SYSTEM

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Objective To evaluate and reduce inter-observer variations in the detection and characterization of pulmonary nodules on digital radiograph (DR) chest images.Methods Two hundreds and thirty-two new posterior-anterior DR chest images were collected from out-patient screening patients. Consensus was reached by two experienced radiologists on the marking, rating, and segmentation of small actionable nodules ranged from 5 to 15 mm in diameter using a computer-aided diagnosis (CAD) system. Both their own nodule findings and the computer's automatic nodule detection results were analyzed to make the consensus.Nodules identified together with corresponding likelihood rating and segmentation results were referred as "Gold Standard". Two un-experienced radiologists were asked to first mark and characterize suspicious nodules independently, then were allowed to consult the computer nodule detection results and change their decisions.Results Large inter-observer variations in pulmonary nodule identification and characterization on DR chest images were observed between un-experienced radiologists. Un-experienced radiologists could greatly benefit from the CAD system, including substantial decrease of inter-observer variation and improvement of nodule detection rates. Moreover,radiologists with different levels of skillfulness could achieve similar high level performance after using the CAD system.Conclusion The CAD system shows a high potential for providing a valuable assistance to the examination of DR chest images.

  14. Early characteristic radiographic changes in mucolipidosis II

    Energy Technology Data Exchange (ETDEWEB)

    Lai, Lillian M. [Lucile Packard Children' s Hospital and Stanford University, Pediatric Radiology, Palo Alto, CA (United States); Lachman, Ralph S. [Lucile Packard Children' s Hospital and Stanford University, Pediatric Radiology, Palo Alto, CA (United States); University of California, International Skeletal Dysplasia Registry, Los Angeles, CA (United States)

    2016-11-15

    Although mucolipidosis type II has similar metabolic abnormalities to those found in all the mucopolysaccharidoses and mucolipidoses, there are distinctive diagnostic radiographic changes of mucolipidosis II in the perinatal/newborn/infant period. To describe the early characteristic radiographic changes of mucolipidosis II and to document when these changes manifest and resolve. We retrospectively reviewed radiographs and clinical records of 19 cases of mucolipidosis II from the International Skeletal Dysplasia Registry (1971-present; fetal age to 21/2 years). A radiologist with special expertise in skeletal dysplasias evaluated the radiographs. The most common abnormalities were increased vertebral body height (80%, nonspecific), talocalcaneal stippling (86%), periosteal cloaking (74%) and vertebral body rounding (50%). Unreported findings included sacrococcygeal sclerosis (54%) and vertebral body sclerosis (13%). Rickets and hyperparathyroidism-like (pseudohyperparathyroidism) changes (rarely reported) were found in 33% of cases. These changes invariably started in the newborn period and resolved by 1 year of age. The conversion from these early infantile radiographic features to dysostosis multiplex changes occurred in 41% of cases, and within the first year after birth. Several findings strongly suggest the diagnosis of mucolipidosis II, including cloaking in combination with one or more of the following radiographic criteria: talocalcaneal stippling, sacrococcygeal or generalized vertebral body sclerosis, vertebral body rounding, or rickets/hyperparathyroidism-like changes in the perinatal/newborn/infancy period. These findings are not found in the other two forms of mucolipidosis nor in any of the mucopolysaccharidoses. (orig.)

  15. Radiographic findings of the shoulder in patients with rheumatoid arthritis%类风湿性关节炎肩关节病变的影像学测量

    Institute of Scientific and Technical Information of China (English)

    何勇; 孙松涛; 胡军林; 顾湘杰; 欧阳桂林; 肖涟波; 夏卿; 黄正; 韩大鹏; 朱飞

    2012-01-01

    [Objective] To evaluate the shoulder function and radiographs in patients with rheumatoid arthritis, analyze the risk factors for joint destruction, collect the data of shoulder involvement in these patients, and provide support for clinical practice. [ Methods ] Patients with rheumatoid arthritis were randomly sampled in outpatient department, shoulder function was evaluated with ASES scale ( American Shoulder and Elbow Surgeons Standardized Assessment Form, self - report section ) , shoulder anteroposterior radiographs were taken and the GH joint destruction was graded with Larson method; Medialisation distance (MD) , upward migration index (UI) , medial displacement index (MI) , greater tuberosity - articular surface distance ( GA) were measured on radiographs, and the correlation between Larson grade and the measurements were analyzed. [ Results] From Mar 2010 to Nov 2010, 116 shoulders in 60 patients with rheumatoid arthritis were adopted in our study. The average age of the patients was (51. 34 ± 14. 14) years (54 females and 6 males) . The average ASES score was (72. 69 ±24. 76)points, 89. 66% of the shoulders were found function impairment. On radiographs, 65. 52% shoulders had radiographic changes ( Larson grade 1-4) . In the non - affected joints ( Larson grade 0 ~ 1 ) , the MD was (7. 55 ± 0. 55) cm, UI was 1. 38 ± 0. 10, MI was 1. 04 ±0. 29, and GA was (0. 60 ±0. 22) cm. ASES score had a negative correlation with the GH joint destruction (r = - 0. 028 3 , P = 0. 001) , both MD and MI had a negative correlation with the GH joint destruction ( Larson grade) ( r = - 0. 177 , P = 0. 029 and r = - 0. 438 , P < 0. 001 ) . GA also had a negative correlation with joint destruction ( r = - 0. 369, P < 0. 001) , but we didn't find correlation between UI and joint destruction ( r = - 0. 062, P = 0. 253 ) , both disease duration and age had a positive correlation with joint destruction ( r = 0. 534 and r = 0. 390, P < 0. 001 ) , but onset age of the disease

  16. Reader characteristics linked to detection of pulmonary nodules on radiographs: ROC vs. JAFROC analyses of performance

    Science.gov (United States)

    Kohli, Akshay; Robinson, John W.; Ryan, John; McEntee, Mark F.; Brennan, Patrick C.

    2011-03-01

    The purpose of this study is to explore whether reader characteristics are linked to heightened levels of diagnostic performance in chest radiology using receiver operating characteristic (ROC) and jackknife free response ROC (JAFROC) methodologies. A set of 40 postero-anterior chest radiographs was developed, of which 20 were abnormal containing one or more simulated nodules, of varying subtlety. Images were independently reviewed by 12 boardcertified radiologists including six chest specialists. The observer performance was measured in terms of ROC and JAFROC scores. For the ROC analysis, readers were asked to rate their degree of suspicion for the presence of nodules by using a confidence rating scale (1-6). JAFROC analysis required the readers to locate and rate as many suspicious areas as they wished using the same scale and resultant data were used to generate Az and FOM scores for ROC and JAFROC analyses respectively. Using Pearson methods, scores of performance were correlated with 7 reader characteristics recorded using a questionnaire. JAFROC analysis showed that improved reader performance was significantly (p<=0.05) linked with chest specialty (p<0.03), hours per week reading chest radiographs (p<0.03) and chest readings per year (p<0.04). ROC analyses demonstrated only one significant relationship, hours per week reading chest radiographs (p<0.02).The results of this study have shown that radiologist's performance in the detection of pulmonary nodules on radiographs is significantly linked to chest specialty, hours reading per week and number of radiographs read per year. Also, JAFROC is a more powerful predictor of performance as compared to ROC.

  17. CHEST PHYSIOTHERAPY FOR INFANTS

    Directory of Open Access Journals (Sweden)

    Preeti S. Christian (M.P.T Cardiopulmonary Conditions

    2014-10-01

    Full Text Available In the normal lung, secretions are removed by Mucociliary activity, normal breathing cycles, and cough. In disease, increased secretion viscosity and volume, dyskinesia of the cilia, and ineffective cough combine to reduce the ability to clear secretions, and may increase exacerbations and infections. Many chest physiotherapy techniques like postural drainage, percussion and vibration are used since many years. These techniques are derived from adult studies but these techniques are quite stressful for the infants as the infant respiratory system is different from the adult respiratory system. Advance chest physiotherapy techniques were developed specifically for infants; in accordance with their physiological characteristics. So this review is to introduce some new chest physiotherapy helpful for newborn infants.

  18. Flail chest and pulmonary contusion.

    Science.gov (United States)

    Bastos, Renata; Calhoon, John H; Baisden, Clinton E

    2008-01-01

    Flail chest is most often accompanied by a significant underlying pulmonary parenchymal injury and can be a life-threatening thoracic injury. Its management is often complicated by the other injuries it is frequently associated with. Similarly, mortality and morbidity are dictated most often by the associated injuries and findings. Its treatment is complex and should first be one of pain management, judicious fluid resuscitation, and excellent pulmonary toilet. In those patients requiring mechanical ventilatory support, or who require ipsilateral thoracocotomy, rib stabilization may be considered depending on a host of potentially conflicting indications and contraindications. At the end of this section are listed the current major recommendations and their levels of evidence.

  19. Chest neoplasms with infectious etiologies.

    Science.gov (United States)

    Restrepo, Carlos S; Chen, Melissa M; Martinez-Jimenez, Santiago; Carrillo, Jorge; Restrepo, Catalina

    2011-12-28

    A wide spectrum of thoracic tumors have known or suspected viral etiologies. Oncogenic viruses can be classified by the type of genomic material they contain. Neoplastic conditions found to have viral etiologies include post-transplant lymphoproliferative disease, lymphoid granulomatosis, Kaposi's sarcoma, Castleman's disease, recurrent respiratory papillomatosis, lung cancer, malignant mesothelioma, leukemia and lymphomas. Viruses involved in these conditions include Epstein-Barr virus, human herpes virus 8, human papillomavirus, Simian virus 40, human immunodeficiency virus, and Human T-lymphotropic virus. Imaging findings, epidemiology and mechanism of transmission for these diseases are reviewed in detail to gain a more thorough appreciation of disease pathophysiology for the chest radiologist.

  20. 艾滋病合并播散性隐球菌病的胸腹部CT表现%The Chest and Abdomen CT Findings of the Disseminated Cryptococcosis in Patients with AIDS

    Institute of Scientific and Technical Information of China (English)

    张烈光; 刘晋新; 江松峰; 陈碧华; 黄德扬

    2013-01-01

    Objective To study the chest and abdomen CT findings of the disseminated cryptococcosis in patients with AIDS.Materials and Methods The chest and abdomen CT imaging features of the disseminated cryptococcosis in 28 patients with AIDS were retro spectively analyzed.Results 28 cases underwent chest CT scan.Pulmonary nodules were seen in 27 (96.43%,27/28) cases.Cavitation in nodule was present in 19 (67.86%,19/28) cases.Ground-glass opacities were seen in 14(50%,14/28) cases.Patch opacities were seen in 2(7.14%,2/28) cases.The enlarged mediastinal and hilar lymph nodes were seen in 11 (40.74%,11/28) cases.Pleural effusion was seen in 6(21.43%,6/28)cases,pericardial effusion was seen in 4(14.29%,4/28) cases.11 of 28 cases underwent abdominal CT scan.Hepatosplenomegaly were seen in 8(72.73%,8/11) cases.Lesions in liver and spleen were found in 2(18.18%,2/11) cases which involved mass and diffused micro-nodules in liver in 1 case and low density node in spleen in 1 case.Abdominal lymph adenopathy were seen in 4(36.36%,4/11)cases and sandwich sign in the small bowel mesentery was seen in 3(27.27%,3/11) cases.Nodule in adrenal gland was seen in 1(9.09%,1/11) case.Ascites were seen in 1(9.09%,1/11) case.Conclusion Pulmonary nodules were the most common CT findings of the disseminated cryptococcosis in patients with AIDS.Cavitation in nodule was characteristic CT findings.Multiple organs can be involved in the abdomen.%目的 探讨艾滋病(Acquired immunodeficiency syndrome,AIDS)合并播散性隐球菌病的胸腹部CT表现.方法 回顾性分析28例艾滋病合并播散性隐球菌病的胸腹部CT表现.结果 28例艾滋病合并播散性隐球菌病胸部CT示肺内结节2 7例(96.43%,27/28),其中19例(67.86%,19/28)结节内可见空洞;肺内磨玻璃样改变14例(50%,14/28);肺内片状实变2例(7.14%,2/28);纵隔肺门淋巴结肿大11例(40.74%,11/28);胸腔积液6例(21.43%,6/28);心包积液4例(14.29%,4/28).11

  1. Aspects of chest imaging in the intensive care unit.

    Science.gov (United States)

    Cascade, P N; Kazerooni, E A

    1994-04-01

    Timely performance and accurate interpretation of portable chest radiographs in the ICU setting are fundamental components of quality care. Teamwork between intensive care clinicians and radiologists is necessary to assure that the appropriate studies, of high technical quality, are obtained. By working together to integrate available clinical information with systematic comprehensive analysis of images, accurate diagnoses can be made, optimal treatment instituted, and successful outcomes optimized.

  2. Radiographic Assessment for Back Pain

    Science.gov (United States)

    Radiographic Assessment for Back Pain What are Radiographic Assessments? When Should I get an X-ray for Low Back Pain? Other Reasons for Having an X-ray What ... What are Radiographic Assessments? Radiographic assessments for low back pain involve the use of X-rays to determine ...

  3. MRI of the Chest

    Medline Plus

    Full Text Available ... vertebrae, ribs and sternum) and chest wall soft tissue (muscles and fat). assess for pericardial (thin sac around the heart) disease. characterize mediastinal or pleural lesions seen by other ... chemical changes in the tissues. As the hydrogen atoms return to their usual ...

  4. High-resolution magnetic resonance imaging (HR-MRI) of the pleura and chest wall: Normal findings and pathological changes; Hochaufloesende Magnetresonanztomographie (HR-MRT) von Pleura und Thoraxwand: Normalbefund und pathologische Veraenderungen

    Energy Technology Data Exchange (ETDEWEB)

    Bittner, R.C. [Strahlen- und Poliklinik, Universtaetsklinikum Rudolf Virchow, Freie Univ. Berlin (Germany); Schnoy, N. [Pathologie, UKRV, FU Berlin (Germany); Schoenfeld, N. [Pneumologie 2, Lungenklinik Heckeshorn, Berlin (Germany); Grassot, A. [Radiologie, Lungenklinik Heckeshorn, Berlin (Germany); Loddenkemper, R. [Pneumologie 2, Lungenklinik Heckeshorn, Berlin (Germany); Lode, H. [Pneumologie 1, Lungenklinik Heckeshorn, Berlin (Germany); Kaiser, D. [Thoraxchirurgie, Lungenklinik Heckeshorn, Berlin (Germany); Krumhaar, D. [Abt. fuer Lungenkranke, Lungenklinik Havelhoehe, Berlin (Germany); Felix, R. [Strahlen- und Poliklinik, Universtaetsklinikum Rudolf Virchow, Freie Univ. Berlin (Germany)

    1995-04-01

    To determine the value of high-resolution MRI in pleural and chest wall diseases, the normal and pathologic costal pleura and adjacent chest wall between paravertebral and the axillar region were examined with contrast enhanced high-resolution T{sub 1}-weighted MRI images using a surface coil. Normal anatomy was evaluated in 5 healthy volunteers and a normal specimen of the thoracic wall, and correlation was made with corresponding HR-CT and histologic sections. CT-proved focal and diffuse changes of the pleura and the chest wall in 36 patients underwent HR-MRI, and visual comparison of MRI and CT was done retrospectively. Especially sagittal T{sub 1}-weighted HR-MRI images allowed accurate delineation of the peripleural fat layer (PFL) and the innermost intercostal muscle (IIM), which served as landmarks of the intact inner chest wall. PFL and IIM were well delineated in 3/4 patients with tuberculous pleuritis, and in all 7 patients with non-specific pleuritis, as opposed to impairment of the PFL and/or the IIM, which was detected in 15/18 malignancies as a pattern of malignant chest wall involvement. In one case of tuberculous pleural empyema with edema of the inner chest wall HR-MRI produced false positive diagnosis of malignant disease. HR-MRI images improved non-invasive evaluation of pleural and chest wall diseases, and allowed for differentiation of bengin and malignant changes. (orig./MG) [Deutsch] Um den Stellenwert der hochaufloesenden MRT bei Pleura- und Thoraxwanderkrankungen zu bestimmen, wurden normale und pathologisch veraenderte kostale Pleura (paravertebral bis axillaer) und angrenzende Thoraxwand mit Hilfe einer Oberflaechenspule und kontrastmittelunterstuetzen T{sub 1}-gewichteten HR-MRT-Aufnahmen untersucht. Die normale Anatomie wurde bei 5 gesunden Probanden sowie einem normalen Thoraxwandpraeparat dargestellt und mit korrespondierenden hochaufloesenden CT- sowie histologischen Aufnahmen verglichen. CT-dokumentierte fokale und diffuse Pleura

  5. Aspectos radiográficos e ultra-sonográficos dos pacientes submetidos a alongamento ósseo pelo método de Ilizarov Radiographic and sonographic findings in patients submitted to limb lengthening using the Ilizarov method

    Directory of Open Access Journals (Sweden)

    Patrícia Martins e Souza

    2003-12-01

    Full Text Available Neste trabalho foram monitorados, por meio de radiografias simples e ultra-sonografias, dez pacientes submetidos a alongamento ósseo com o uso do fixador externo de Ilizarov, no período de março de 2001 a março de 2002. Os pacientes submetidos ao método de Ilizarov foram principalmente crianças e adolescentes, para correção de anomalias congênitas (seis casos. A correção do encurtamento se deveu a trauma complicado com osteomielite em três pacientes e a ressecção tumoral em um paciente. O fêmur esteve envolvido em 60% dos casos, a tíbia em 30% e a fíbula em 10%. Os achados radiográficos encontrados na evolução normal do regenerado ósseo foram um centro radiotransparente, ossificação linear, reação periosteal, aumento das partes moles e ossificação completa. Os achados da formação do osso novo na ultra-sonografia foram o regenerado anecóico, ecos esparsos no sítio de distração, ecos lineares alinhados longitudinalmente, ecos grosseiros e amorfos e calcificação completa. Ocorreram 15 complicações em seis pacientes: cisto no regenerado (cinco casos, infecção adjacente aos pinos (quatro casos, coleção em partes moles (três casos, consolidação precoce (dois casos e retardo na consolidação (um caso.Ten patients treated with Ilizarov external fixator for limb lengthening were monitored with radiographs and sonography examinations between March, 2001 and March, 2002. Most of the patients were children and adolescents who were submitted to surgery for correction of congenital deformities (six cases. In three patients shortening was secondary to post-traumatic osteomielitis and in one patient due to tumor resection. The femur was affected in 60%, tibia in 30% and fibula in 10% of the cases. The main radiographic findings of bone regeneration during the normal process of limb lengthening were lucent areas, linear ossification, periosteal reaction, soft tissue abnormalities and complete consolidation

  6. Multidetector Computer Tomography: Evaluation of Blunt Chest Trauma in Adults

    Directory of Open Access Journals (Sweden)

    João Palas

    2014-01-01

    Full Text Available Imaging plays an essential part of chest trauma care. By definition, the employed imaging technique in the emergency setting should reach the correct diagnosis as fast as possible. In severe chest blunt trauma, multidetector computer tomography (MDCT has become part of the initial workup, mainly due to its high sensitivity and diagnostic accuracy of the technique for the detection and characterization of thoracic injuries and also due to its wide availability in tertiary care centers. The aim of this paper is to review and illustrate a spectrum of characteristic MDCT findings of blunt traumatic injuries of the chest including the lungs, mediastinum, pleural space, and chest wall.

  7. Multidetector computer tomography: evaluation of blunt chest trauma in adults.

    Science.gov (United States)

    Palas, João; Matos, António P; Mascarenhas, Vasco; Herédia, Vasco; Ramalho, Miguel

    2014-01-01

    Imaging plays an essential part of chest trauma care. By definition, the employed imaging technique in the emergency setting should reach the correct diagnosis as fast as possible. In severe chest blunt trauma, multidetector computer tomography (MDCT) has become part of the initial workup, mainly due to its high sensitivity and diagnostic accuracy of the technique for the detection and characterization of thoracic injuries and also due to its wide availability in tertiary care centers. The aim of this paper is to review and illustrate a spectrum of characteristic MDCT findings of blunt traumatic injuries of the chest including the lungs, mediastinum, pleural space, and chest wall.

  8. Giant colonic diverticulum: radiographic and MDCT characteristics.

    Science.gov (United States)

    Zeina, Abdel-Rauf; Mahamid, Ahmad; Nachtigal, Alicia; Ashkenazi, Itamar; Shapira-Rootman, Mika

    2015-12-01

    Giant colonic diverticulum (GCD), defined as a diverticulum larger than 4 cm, is a rare entity that is generally a manifestation of colonic diverticular disease. Because of its rarity and its variable and non-specific presentation, the diagnosis of GCD depends mainly on imaging findings. Knowledge of the spectrum of radiographic and CT features of the GCD is important in making the correct diagnosis and potentially preventing complications. This review focuses on imaging findings characteristic of GCD as well as its complications and radiographic mimics. Teaching points • Giant colonic diverticulum is a rare complication of diverticulosis.• The most common symptom is abdominal pain presenting in approximately 70 % of patients.• Diagnosis is based on imaging findings with plain abdominal radiographs and MDCT.• Treatment consists of en bloc resection of the diverticulum and affected adjacent colon.

  9. Radiographic signs of non-venous placement of intended central venous catheters in children

    Energy Technology Data Exchange (ETDEWEB)

    Taylor, Erin C. [Boston Children' s Hospital, Department of Radiology, Boston, MA (United States); Taylor, George A. [Boston Children' s Hospital, Department of Radiology, Boston, MA (United States); Harvard Medical School, Department of Radiology, Boston, MA (United States)

    2016-02-15

    Central venous catheters (CVCs) are commonly used in children, and inadvertent arterial or extravascular cannulation is rare but has potentially serious complications. To identify the radiographic signs of arterial placement of CVCs. We retrospectively reviewed seven cases of arterially malpositioned CVCs on chest radiograph. These cases were identified through departmental quality-assurance mechanisms and external consultation. Comparison of arterial cases was made with 127 age-matched chest radiographs with CVCs in normal, expected venous location. On each anteroposterior (AP) radiograph we measured the distance of the catheter tip from the right lateral border of the thoracic spine, and the angle of the vertical portion of the catheter relative to the midline. On each lateral radiograph we measured the angle of the vertical portion of each catheter relative to the anterior border of the thoracic spine. When bilateral subclavian catheters were present, the catheter tips were described as crossed, overlapping or uncrossed. On AP radiographs, arterially placed CVCs were more curved to the left, with catheter tip positions located farther to the left of midline than normal venous CVCs. When bilateral, properly placed venous catheters were present, all catheters crossed at the level of the superior vena cava (SVC). When one of the bilateral catheters was in arterial position, neither of the catheters crossed or the inter-catheter crossover distance was exaggerated. On lateral radiographs, there was a marked anterior angulation of the vertical portion of the catheter (mean angle 37 ± 15 standard deviation [SD] in arterial catheters versus 5.9 ± 8.3 SD in normally placed venous catheters). Useful radiographic signs suggestive of unintentional arterial misplacement of vascular catheters include leftward curvature of the vertical portion of the catheter, left-side catheter tip position, lack of catheter crossover on the frontal radiograph, as well as exaggerated

  10. Role of Cross Sectional Imaging in Isolated Chest Wall Tuberculosis

    Science.gov (United States)

    Sanyal, Shantiranjan; Sharma, Barun K.; Prakash, Arjun; Dhingani, Dhabal D.; Bora, Karobi

    2017-01-01

    Introduction Isolated chest wall tuberculosis though a rare entity, the incidence of it has been on rise among immunocompromised population making it an important challenging diagnosis for the physicians. Its clinical presentation may resemble pyogenic chest wall abscess or chest wall soft tissue tumour. Sometimes it is difficult to detect clinically or on plain radiograph. Aim The present study was conducted with an aim to evaluate the common sites and varying appearances of isolated chest wall tuberculosis. Materials and Methods A hospital based cross-sectional retrospective study was conducted in Assam Medical College and Hospital, a tertiary care centre in North East India. The study group comprise of 21 patients (n=15 male and n=6 females) with isolated chest wall tuberculosis without associated pulmonary or spinal involvement who were subjected to Computed Tomography/Magnetic Resonance Imaging (CT/MRI) of the thorax following initial Ultrasonogram (USG) evaluation of the local site. Pathological correlation was done from imaging guided sampling of the aspirate or surgery. Results Variable sites of involvement were seen in the chest wall in our patients (n=21), with chest wall abscess formation being the most common presentation and rib being the most common bony site affected in the thoracic cage. Bony sclerosis was noted in 11 patients (52.4%), periosteal reaction in 10 patients (47.6%) and sequestration in five patients (23.8%). CT/MRI not only localized the exact site and extent of the abscesses which facilitated guided aspirations, but also helped in detecting typical bony lesions thereby, differentiating from pyogenic osteomyelitis besides ruling out associated pulmonary or pleural involvement in such patients. Conclusion Cross-sectional imaging plays an important role by giving a wholesome picture of both soft tissue and bony pathology. It is important to have adequate understanding of the radiologic manifestations of the chest wall involvement and

  11. Significant efficiency findings while controlling for the frequent confounders of CAI research in the PlanAlyzer project's computer-based, self-paced, case-based programs in anemia and chest pain diagnosis.

    Science.gov (United States)

    Lyon, H C; Healy, J C; Bell, J R; O'Donnell, J F; Shultz, E K; Wigton, R S; Hirai, F; Beck, J R

    1991-04-01

    Richard E. Clark in his widely published comprehensive studies and meta-analyses of the literature on computer assisted instruction (CAI) has decried the lack of carefully controlled research, challenging almost every study which shows the computer-based intervention to result in significant post-test proficiency gains over a non-computer-based intervention. We report on a randomized study in a medical school setting where the usual confounders found by Clark to plague most research, were carefully controlled. PlanAlyzer is a microcomputer-based, self-paced, case-based, event-driven system for medical education which was developed and used in carefully controlled trials in a second year medical school curriculum to test the hypothesis that students with access to the interactive programs could integrate their didactic knowledge more effectively and/or efficiently than with access only to traditional textual "nonintelligent" materials. PlanAlyzer presents cases, elicits and critiques a student's approach to the diagnosis of two common medical disorders: anemias and chest pain. PlanAlyzer uses text, hypertext, images and critiquing theory. Students were randomized, one half becoming the experimental group who received the interactive PlanAlyzer cases in anemia, the other half becoming the controls who received the exact same content material in a text format. Later in each year there was a crossover, the controls becoming the experimentals for a similar intervention with the cardiology PlanAlyzer cases. Preliminary results at the end of the first two full trials shows that the programs have achieved most of the proposed instructional objectives, plus some significant efficiency and economy gains. 96 faculty hours of classroom time were saved by using PlanAlyzer in their place, while maintaining high student achievement. In terms of student proficiency and efficiency, the 328 students in the trials over two years were able to accomplish the project's instructional

  12. Radiographic study on temporomandibular joint Arthrosis

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Dong Soo [Dept. of Radiology, College of Dentistry, Seoul National University , Seoul (Korea, Republic of)

    1980-11-15

    The author analysed the routine radiographic changes and clinical symptoms of 205 cases of temporomandibular joint arthrosis. The clinical symptoms of the patients were classified and the morphological changes of condylar head, articular eminence, and articular fossa were analyzed and discussed from radiographic view point. The positional change of condylar head and articular fossa relation in TMJ arthrosis were observed. The frequencies of coincidence between the site of complaints and the site of the abnormal images which could be detected were examined. The results were obtained as follows; 1. Bone erosion, deformity, marginal proliferation and sclerosis were selected from many abnormal images as the radiographic diagnostic criteria of TMJ arthritic lesions. 2. Abnormal radiographic findings were revealed in 150 cases (73.9%) of 205 total TMJ arthrosis cases and site with abnormal findings coincided with the site of complaints in 105 cases (70.7%) of 150 cases and coincidence rates were higher above fourth decades than below third decades. 3. Sclerosis of the abnormal radiographic findings could be found more often below third decades than above fourth decades. 4. The positional changes of condylar head were revealed in 176 cases (85.9%) of 205 total cases. 5. Pain complaints were revealed in 170 cases(82.9%) and clicking sounds were revealed in 120 cases (58.6%) of clinical symptoms of TMJ arthrosis. 6. No tendency was found so far the differential diagnosis between pain dysfunction syndrome and osteoarthrosis of TMJ.

  13. CHEST PHYSIOTHERAPY FOR INFANTS

    OpenAIRE

    2014-01-01

    In the normal lung, secretions are removed by Mucociliary activity, normal breathing cycles, and cough. In disease, increased secretion viscosity and volume, dyskinesia of the cilia, and ineffective cough combine to reduce the ability to clear secretions, and may increase exacerbations and infections. Many chest physiotherapy techniques like postural drainage, percussion and vibration are used since many years. These techniques are derived from adult studies but these techniques are quite str...

  14. Primary ciliary dyskinesia in the paediatric population: range and severity of radiological findings in a cohort of patients receiving tertiary care

    Energy Technology Data Exchange (ETDEWEB)

    Jain, K. [Department of Radiology, Royal Brompton and Harefield NHS Trust, London (United Kingdom); Padley, S.P.G. [Department of Radiology, Royal Brompton and Harefield NHS Trust, London (United Kingdom)], E-mail: s.padley@ic.ac.uk; Goldstraw, E.J.; Kidd, S.J. [Department of Radiology, Royal Brompton and Harefield NHS Trust, London (United Kingdom); Hogg, C.; Biggart, E.; Bush, A. [Department of Paediatric Respiratory Medicine, Royal Brompton and Harefield NHS Trust, London (United Kingdom)

    2007-10-15

    Aim: To investigate the clinical range and severity of radiological findings in a cohort of patients with primary ciliary dyskinesia (PCD) receiving tertiary care. Materials and methods: The case notes and clinical test results of 89 children attending the paediatric respiratory disease clinic at our institution were retrospectively analysed. Demographic details including age at diagnosis and common presenting signs and symptoms were studied. Results of chest radiographs, microscopy, and high-resolution computed tomography (HRCT) for quantification of lung damage were analysed. Results: In a cohort of 89 children with PCD, a presentation chest radiograph was available in 62% of patients (n = 55), with all but one demonstrating changes of bronchial wall thickening. HRCT of the lungs, available in 26 patients, were scored using the system described by Brody et al. analysing five specific features of lung disease, including bronchiectasis, mucus plugging, peribronchial thickening, parenchymal changes of consolidation, and ground-glass density, and focal air-trapping in each lobe. Peribronchial thickening was observed using HRCT in 25 patients, while 20 patients had bronchiectasis. Severity scores were highest for the middle and the lingular lobes. Conclusion: The radiographic findings of the largest reported cohort of patients with PCD are presented, with associated clinical findings. Dextrocardia remains the commonest finding on chest radiography. HRCT demonstrates peribronchial thickening and bronchiectasis, which is most marked in the lower zones. Radiological scoring techniques developed for assessment of cystic fibrosis can also be applied for the assessment of disease severity in this patient population.

  15. TU-CD-BRA-11: Application of Bone Suppression Technique to Inspiratory/expiratory Chest Radiography

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, R; Sanada, S [Kanazawa University, Kanazawa, Ishikawa (Japan); Sakuta, K; Kawashima, H [Kanazawa University Hospital, Kanazawa, Ishikawa (Japan); Kishitani, Y [TOYO Corporation, Chuoh-ku, Tokyo (Japan)

    2015-06-15

    Purpose: The bone suppression technique based on advanced image processing can suppress the conspicuity of bones on chest radiographs, creating soft tissue images normally obtained by the dual-energy subtraction technique. This study was performed to investigate the usefulness of bone suppression technique in quantitative analysis of pulmonary function in inspiratory/expiratory chest radiography. Methods: Commercial bone suppression image processing software (ClearRead; Riverain Technologies) was applied to paired inspiratory/expiratory chest radiographs of 107 patients (normal, 33; abnormal, 74) to create corresponding bone suppression images. The abnormal subjects had been diagnosed with pulmonary diseases, such as pneumothorax, pneumonia, emphysema, asthma, and lung cancer. After recognition of the lung area, the vectors of respiratory displacement were measured in all local lung areas using a cross-correlation technique. The measured displacement in each area was visualized as displacement color maps. The distribution pattern of respiratory displacement was assessed by comparison with the findings of lung scintigraphy. Results: Respiratory displacement of pulmonary markings (soft tissues) was able to be quantified separately from the rib movements on bone suppression images. The resulting displacement map showed a left-right symmetric distribution increasing from the lung apex to the bottom region of the lung in many cases. However, patients with ventilatory impairments showed a nonuniform distribution caused by decreased displacement of pulmonary markings, which were confirmed to correspond to area with ventilatory impairments found on the lung scintigrams. Conclusion: The bone suppression technique was useful for quantitative analysis of respiratory displacement of pulmonary markings without any interruption of the rib shadows. Abnormal areas could be detected as decreased displacement of pulmonary markings. Inspiratory/expiratory chest radiography combined

  16. Differentiating Pneumothorax from the Common Radiographic Skinfold Artifact.

    Science.gov (United States)

    Kattea, M Obadah; Lababede, Omar

    2015-06-01

    Pneumothorax can be a critical medical condition. The radiographic curvilinear appearance of pneumothorax can be mimicked by a skinfold artifact. Radiographic differentiation of the two entities is achieved in most cases by careful analysis of the characteristics of the linear shadow and its course. A thin, sharply defined opaque density representing the visceral pleura is the hallmark of pneumothorax. The added density of a skinfold presents as a broad opacity, which is outlined laterally by a sharply defined lucent line as a result of the Mach band effect and adjacent air. Unlike pneumothorax, a skinfold produces a line that does not follow the expected course of visceral pleura. Additional features, such as the absence of increased lucency laterally and the projection of lung markings across the curvilinear shadow, can help in the correct identification of skinfolds. Repeating the chest radiograph or using other imaging modalities can be considered in difficult cases.

  17. Susuk - black magic exposed "white" by dental radiographs.

    Science.gov (United States)

    F, Arishiya Thapasum; Mohammed, Faraz

    2014-07-01

    Susuk or charm needles are a facial cum body art widely practiced among women of Malaysia, Brunei, Singapore, Thailand and Indonesia. These are small, needle-shaped metallic talismans inserted subcutaneously in different parts of the body. The concealed art of susuk was "exposed" by routine radiographic examination in the oral and maxillofacial region. This paper reports two such cases of unusual incidental radiographic finding in dental radiographs which were taken on a routine basis as part of the diagnostic work up. This article will also primarily enlighten the importance of radiographs in detecting such charm needles as the wearer keeps the body art a "hidden secret" thereby avoiding misdiagnosis.

  18. The neonatal chest

    Energy Technology Data Exchange (ETDEWEB)

    Lobo, Luisa [Servico de Imagiologia Geral do Hospital de Santa Maria, Av. Prof. Egas Moniz, 1649-035 Lisbon (Portugal)]. E-mail: mluisalobo@gmail.com

    2006-11-15

    Lung diseases represent one of the most life threatening conditions in the newborn. Important progresses in modern perinatal care has resulted in a significantly improved survival and decreased morbidity, in both term and preterm infants. Most of these improvements are directly related to the better management of neonatal lung conditions, and infants of very low gestational ages are now surviving. This article reviews the common spectrum of diseases of the neonatal lung, including medical and surgical conditions, with emphasis to the radiological contribution in the evaluation and management of these infants. Imaging evaluation of the neonatal chest, including the assessment of catheters, lines and tubes are presented.

  19. Imaging of blunt chest trauma; Bildgebung des stumpfen Thoraxtraumas

    Energy Technology Data Exchange (ETDEWEB)

    Prosch, H. [Medizinische Universitaet Wien, Allgemeines Krankenhaus, Univ.-Klinik fuer Radiologie und Nuklearmedizin, Wien (Austria); Negrin, L. [Medizinische Universitaet Wien, Allgemeines Krankenhaus, Univ.-Klinik fuer Unfallchirurgie, Wien (Austria)

    2014-09-15

    Blunt chest trauma is associated with high morbidity and mortality. Consequently, all patients should be evaluated radiologically after blunt chest trauma to allow timely and appropriate treatment. Conventional chest radiographs and computed tomography (CT) are proven modalities with which to evaluate patients after blunt chest trauma. Over the last several years extended focused assessment with sonography for trauma (eFAST) has gained increasing importance for the initial assessment of seriously injured patients. In the acute phase of severely injured patients eFAST examinations are helpful to exclude pneumothorax, hemothorax and hemopericardium. Chest radiographs may also be used to diagnose a pneumothorax or hemothorax; however, the sensitivity is limited and CT is the diagnostic modality of choice to evaluate severely injured patients. (orig.) [German] Stumpfe Thoraxtraumen gehen mit einer hohen Morbiditaet und Mortalitaet einher. Daher sollten Patienten mit Verdacht auf ein stumpfes Thoraxtrauma rasch radiologisch untersucht werden, damit die entsprechenden therapeutischen Schritte zeitgerecht eingeleitet werden koennen. Zur Abklaerung von Patienten nach einem stumpfen Thoraxtrauma sind seit Jahren das konventionelle Lungenroentgen und die Computertomographie bewaehrte Verfahren. In den letzten Jahren hat die fokussierte Ultraschalluntersuchung (eFAST, Extended Focused Assessment with Sonography for Trauma) von schwerverletzten Patienten vermehrt an Bedeutung gewonnen. Durch eine eFAST-Untersuchung kann in der Akutphase rasch geklaert werden, ob bei dem Patienten ein therapiebeduerftiger Pneumothorax, Haematoperikard oder Haematothorax vorliegen. Auch das Lungenroentgen wird zur Diagnose eines Pneumothorax oder Haematothorax eingesetzt, wenngleich seine Sensitivitaet deutlich eingeschraenkt ist. Die CT ist das diagnostische Verfahren der Wahl, um v. a. Patienten mit einem schweren Thoraxtrauma abzuklaeren. (orig.)

  20. Lymphocytic adenohypophysitis: skull radiographs and MRI

    Energy Technology Data Exchange (ETDEWEB)

    Saiwai, S.; Miyamoto, T. [Department of Radiology, Kobe Central Municipal Hospital, Hyogo (Japan); Inoue, Y.; Nemoto, Y.; Tashiro, T. [Department of Radiology, Osaka City University Medical School (Japan); Ishihara, T. [Department of Endocrinology, Kobe Central Municipal Hospital, Hyogo (Japan); Matsumoto, S. [Department of Neurosurgery, Kobe Central Municipal Hospital, Hyogo (Japan); Hakuba, A. [Department of Neurosurgery, Osaka City University Medical School, 1-5-7 Asahimachi, Abeno, Osaka, 545 (Japan)

    1998-02-01

    We report the skull radiograph, CT and MRI findings in three patients with lymphocytic adenohypophysitis mimicking pituitary adenoma. All cases were associated with pregnancy. CT demonstrated a pituitary mass but did not differentiate lymphocytic adenohypophysitis from pituitary adenoma. The skull radiographs showed either a normal sella turcica or minimal abnormalities; they did not show ballooning or destruction. The MRI appearances were distinctive: relatively low signal on T1-weighted images; preservation of the bright posterior pituitary lobe despite the presence of a relatively large pituitary mass, less common in macroadenomas; marked contrast enhancement compared with pituitary macroadenomas; and dural enhancement adjacent to a pituitary mass. (orig.) With 3 figs., 1 tab., 40 refs.

  1. Chest computed tomography-based scoring of thoracic sarcoidosis: Inter-rater reliability of CT abnormalities

    Energy Technology Data Exchange (ETDEWEB)

    Heuvel, D.A.V. den; Es, H.W. van; Heesewijk, J.P. van; Spee, M. [St. Antonius Hospital Nieuwegein, Department of Radiology, Nieuwegein (Netherlands); Jong, P.A. de [University Medical Center Utrecht, Department of Radiology, Utrecht (Netherlands); Zanen, P.; Grutters, J.C. [University Medical Center Utrecht, Division Heart and Lungs, Utrecht (Netherlands); St. Antonius Hospital Nieuwegein, Center of Interstitial Lung Diseases, Department of Pulmonology, Nieuwegein (Netherlands)

    2015-09-15

    To determine inter-rater reliability of sarcoidosis-related computed tomography (CT) findings that can be used for scoring of thoracic sarcoidosis. CT images of 51 patients with sarcoidosis were scored by five chest radiologists for various abnormal CT findings (22 in total) encountered in thoracic sarcoidosis. Using intra-class correlation coefficient (ICC) analysis, inter-rater reliability was analysed and reported according to the Guidelines for Reporting Reliability and Agreement Studies (GRRAS) criteria. A pre-specified sub-analysis was performed to investigate the effect of training. Scoring was trained in a distinct set of 15 scans in which all abnormal CT findings were represented. Median age of the 51 patients (36 men, 70 %) was 43 years (range 26 - 64 years). All radiographic stages were present in this group. ICC ranged from 0.91 for honeycombing to 0.11 for nodular margin (sharp versus ill-defined). The ICC was above 0.60 in 13 of the 22 abnormal findings. Sub-analysis for the best-trained observers demonstrated an ICC improvement for all abnormal findings and values above 0.60 for 16 of the 22 abnormalities. In our cohort, reliability between raters was acceptable for 16 thoracic sarcoidosis-related abnormal CT findings. (orig.)

  2. Predicting lower third molar eruption on panoramic radiographs after cephalometric comparison of profile and panoramic radiographs.

    Science.gov (United States)

    Begtrup, Anders; Grønastøð, Halldis Á; Christensen, Ib Jarle; Kjær, Inger

    2013-08-01

    Previous studies have suggested methods for predicting third molar tooth eruption radiographically. Still, this prediction is associated with uncertainty. The aim of the present study was to elucidate the association between cephalometric measurements on profile and panoramic radiographs and to find a simple and reliable method for predicting the eruption of the mandibular third molar by measurements on panoramic radiographs. The material consisted of profile and panoramic radiographs, taken before orthodontic treatment, of 30 males and 23 females (median age 22, range 18-48 years), with no known diseases. Cephalometric measurements on panoramic and profile radiographs were performed and compared, i.e. the size of the gonial angle and sagittal distance from the alveolar margin between the mandibular central incisors to the anterior border of the mandibular ramus. Furthermore, the mesiodistal width of the second molar was measured. Statistical methods included analysis of method error. The probability of eruption was modelled using logistic regression analysis. Correlation was observed between all measurements on profile and panoramic radiographs. The skeletal variable expressing the length from the ramus to the incisors (olr-id) showed a statistically significant correlation. By combining this length with the mesiodistal width of the lower second molar, the prediction of eruption of the lower third molar was strengthened. A new formula for calculating the probability of eruption of the mandibular third molar was made and a graph constructed for easy assessment. In conclusion, a simple method for predicting the eruption of the third molar is presented.

  3. Proximal femoral canal shape is more accurately assessed on AP hip radiographs than AP pelvis radiographs in primary hip osteoarthritis.

    Science.gov (United States)

    Merle, Christian; Waldstein, Wenzel; Gregory, Jennifer S; Goodyear, Simon R; Aspden, Richard M; Aldinger, Peter R; Murray, David W; Gill, Harinderjit S

    2013-01-01

    The objectives of the present study were to determine whether differences in the radiographic appearance of the of the proximal femoral canal exist on corresponding AP pelvis and AP hip radiographs, and whether radiographic assessment of canal shape is accurate with reference to computed tomography (CT). In a retrospective study, corresponding radiographs and CT scans of 100 consecutive patients with primary hip OA were evaluated. Active shape modelling (ASM) was performed to assess the variation in proximal femoral canal shape and to identify differences between AP hip and AP pelvis views. Differences in the medial cortical flare between radiographs and CT were quantified using least squares curve fitting. ASM identified significant differences in the assessment of canal shape on corresponding AP hip and AP pelvis views. Curve fitting demonstrated a good agreement between AP hip radiographs and CT. Agreement between AP pelvis radiographs and CT was less good. In contrast to AP pelvis radiographs, AP hip radiographs allow a more accurate and reliable assessment of proximal femoral canal shape in the frontal plane in primary hip OA. Our findings may improve stem fit in total hip arthroplasty without the routine use of CT.

  4. High resolution CT in children with cystic fibrosis: correlation with pulmonary functions and radiographic scores

    Energy Technology Data Exchange (ETDEWEB)

    Demirkazik, Figen Basaran E-mail: demirkaz@dialup.ankara.edu.tr; Ariyuerek, O. Macit; Oezcelik, Ugur; Goecmen, Ayhan; Hassanabad, Hossein K.; Kiper, Nural

    2001-01-01

    Objective: To compare the high resolution CT (HRCT) scores of the Bhalla system with pulmonary function tests and radiographic and clinical points of the Shwachman-Kulczycki clinical scoring system. Methods: HRCT of the chest was obtained in 40 children to assess the role of HRCT in evaluating bronchopulmonary pathology in children with cystic fibrosis (CF). The HRCT severity scores of the Bhalla system were compared with chest radiographic and clinical points of the Shwachman-Kulczycki scoring system and pulmonary function tests. Only 14 of the patients older than 6 years cooperated with spirometry. Results: HRCT scores correlated well with radiographic points (r=0.80, P<0.0001) and clinical points (r=0.67, P<0.0001) of the Shwachman-Kulczycki system, FVC (r=0.71 P=0.004) and FEV{sub 1} (r=0.66, P=0.01). Although radiographic points correlated significantly with FVC (r=0.61, P=0.02) and FEV{sub 1} (r=0.56, P=0.04), HRCT provides a more precise scoring than the chest X-ray. Conclusion: The HRCT scoring system may provide a sensitive method of monitoring pulmonary disease status and may replace the radiographic scoring in the Shwachman-Kulczycki system. It may be helpful especially in follow-up of small children too young to cooperate with spirometry.

  5. Comparison of total-body calcium with radiographic and photon absorptiometry measurement of appendicular bone mineral content. [Comparison of findings in patients with primary osteoporosis and healthy marathon runners

    Energy Technology Data Exchange (ETDEWEB)

    Zanzi, I; Colbert, C; Bachtell, R; Thompson, K; Aloia, J; Cohn, S

    1978-01-01

    Two groups of investigators utilized three techniques for evaluating bone mineral mass. In one institution, total-body calcium by total body neutron activation analysis, and bone mineral content of the radius by photon absorptiometry were measured concomitantly. In the other institution, the mean bone mineral content of the three inner phalanges of the left hand was measured by radiographic absorptiometry. These techniques were applied to two groups of subjects: 16 patients with primary osteoporosis and 14 healthy marathon runners. The higher correlation found in osteoporotic patients may be related to the diffuse nature of this condition and to differences in the distribution of skeletal mass in the marathon runners.

  6. Chest radiography in acute traumatic rupture of the thoracic aorta

    Energy Technology Data Exchange (ETDEWEB)

    Heystraten, F.M.; Rosenbusch, G.; Kingma, L.M.; Lacquet, L.K.; Boo, T. de; Lemmens, W.A.

    Of 123 patients who had suffered blunt trauma to the chest traumatic aortic rupture was eventually confirmed in 61 and absent in 62 patients. The chest radiographs of these patients were examined for 15 signs reported in the literature as being associated with traumatic aortic rupture. Although many individual signs were significantly more frequent in the aortic rupture group they were not useful in differentiating between patients with and those without rupture of the aorta. By using discriminant analysis combining 2 or 3 signs, patients were classified as having aortic rupture or not. The best discrimination between the two groups was obtained using the combined signs of a widened paratracheal stripe, and opacified pulmonary window, a widened right paraspinal interface and a displaced nasogastric tube.

  7. An Atypical Cause of Atypical Chest Pain

    OpenAIRE

    2014-01-01

    The present report describes a case involving a 57-year-old HIV-positive man who presented with acute retrosternal chest pain accompanied by 24 h of fever. Septic arthritis of the manubriosternal joint was diagnosed based on magnetic resonance imaging findings in addition to Staphylococcus aureus bacteremia. To the authors’ knowledge, the present case is only the 12th reported case of manubriosternal septic arthritis, and the first in an HIV-positive patient. Early diagnosis and treatment can...

  8. A pilot study evaluating erect chest imaging in children, using the Lodox Statscan digital X-ray machine

    OpenAIRE

    2009-01-01

    ABSTRACT Background: Chest radiography accounts for a significant proportion of ionising radiation in children. The radiation dose of radiographs performed on the Lodox Statscan system has been shown to be lower than that of a computed radiography (CR) system. The role of the Lodox Statscan (hereafter referred to as the Statscan) in routine erect chest radiography in children has not been evaluated. Objective: To evaluate the image quality and diagnostic accuracy of erect paedi...

  9. Routine chest radiography after permanent pacemaker implantation: Is it necessary?

    Directory of Open Access Journals (Sweden)

    Edwards N

    2005-01-01

    Full Text Available Background and Aims: Chest radiographs (CXRs are performed routinely after permanent pacemaker implantation to identify pacemaker lead position and exclude pneumothorax. We assessed the clinical value and need for this procedure. Design: Retrospective analysis of pacemaker data and CXRs following permanent pacemaker insertion between December 2002 and February 2004. Materials and Methods: Post-procedural CXRs were available in 125/126 consecutive patients after either first endocardial pacemaker implantation or insertion of at least one new lead. Subclavian vein puncture was used for venous access in all cases. CXRs were examined to establish the incidence of pneumothorax and assess pacing lead positions. The clinical records were examined in all patients who had subsequent CXRs or a further pacemaker procedure to identify the indication for these and to establish whether CXR had influenced patient management. Results: In total, 192 post-procedural CXRs were performed, either postero-anterior (PA and/or lateral views. Ventricular and/or atrial pacing lead contour and electrode position was considered radiographically appropriate in 86% CXRs. Fourteen per cent of post-procedural radiographs were considered to have radiologically sub-optimal pacemaker lead positioning. None of the patients with these "abnormal" radiographs experienced subsequent pacemaker complications or had further radiographs recorded at a later date. Later repeat CXRs were performed in 16 patients (13% but only 3 patients (2% had pacing abnormalities as the primary indication. All three had satisfactory pacing lead position on initial post-implantation and later radiographs, but required further procedures for lead re-positioning. Iatrogenic pneumothorax occurred in one patient (incidence 0.8% in our series. CXR confirmed the clinical diagnosis and allowed an assessment of size to guide treatment. Conclusion: Routine CXR after permanent pacemaker insertion is not necessary in

  10. Mesenchymal hamartoma of the chest wall: prenatal sonographic manifestations.

    Science.gov (United States)

    Wie, Jeong ha; Kim, Ju Yeon; Kwon, Ji Young; Ko, Hyun Sun; Shin, Jong Chul; Park, In Yang

    2013-06-01

    Mesenchymal hamartoma of the chest wall is a rare, benign lesion that arises from one or more ribs, almost exclusively found in infants. Some cases that developed in the fetal period have been reported, but accurate diagnosis was usually possible only after birth, except in a few cases in which fetal magnetic resonance imaging or computed tomography were performed. We present a case of a congenital mesenchymal hamartoma of the chest wall. Although the diagnosis was not confirmed until birth, the prenatal sonographic examination showed strongly suggestive findings. We review the published reports on this condition, and suggest the prenatal sonographic features. Prenatal sonography is valuable in the differential diagnosis of chest mass.

  11. Sarcoidosis: radiographic manifestations in the nails and distal phalanges

    Energy Technology Data Exchange (ETDEWEB)

    Albers, Brittany K.; Garner, Hillary W. [Mayo Clinic, Department of Radiology, Jacksonville, FL (United States); Sluzevich, Jason C. [Mayo Clinic, Department of Dermatology, Jacksonville, FL (United States)

    2016-05-15

    Sarcoidosis is a granulomatous disease which can affect multiple organ systems. Clinical and radiologic manifestations depend on the organ system involved and the chronicity of disease. Nail involvement in sarcoidosis is rare, but is clinically relevant as it indicates chronic systemic disease. Nail abnormalities can be identified radiographically, and when seen in patients with known or suspected sarcoidosis, should prompt careful evaluation of the underlying bone for osseous involvement. We describe a case of sarcoidosis with radiographic findings in the nails and distal phalangeal tufts, which were indicative of nail and osseous sarcoid involvement and strongly supported the presence of chronic systemic disease. Although the nail findings resolved clinically and on radiographs after treatment, the osseous findings showed only minimal improvement. To our knowledge, the radiographic findings of nail sarcoidosis have not been previously addressed in the literature. (orig.)

  12. Lung findings on high resolution CT in early ankylosing spondylitis

    Energy Technology Data Exchange (ETDEWEB)

    Kiris, Adem E-mail: ademkiris@hotmail.com; Ozgocmen, Salih; Kocakoc, Ercan; Ardicoglu, Ozge; Ogur, Erkin

    2003-07-01

    Objective: Ankylosing spondylitis (AS) is a chronic inflammatory disease mainly affecting the axial skeleton and pulmonary involvement is a well known feature of the disease. The aim of this study was to investigate the pulmonary high resolution computed tomography (HRCT) findings of patients with early AS. The relationship between pulmonary function tests (PFT) and HRCT findings was also determined. Subjects and methods: Twenty-eight patients with AS (mean age 30.8{+-}7.4 and disease duration 7.0{+-}2.6) were included in the study. Patients with a disease duration of >10 years or had other pulmonary diseases were excluded. All patients underwent plain chest radiography (posteroanterior and lateral views), thoracic HRCT and PFT. Results: All chest radiographs were normal and HRCT revealed abnormalities in 18 patients. The most common abnormalities seen on HRCT were mosaic pattern (ten of 28), subpleural nodule (seven of 28) and parenchymal bands (five of 28). Seven of ten patients with mosaic pattern revealed air trapping areas on end expiratory scans. Twelve patients had abnormal PFT and all had restrictive type of involvement. Ten of these 12 patients had abnormal HRCT and the remaining two patients had normal HRCT. On the other hand, eight patients with normal PFT had abnormalities on HRCT. Conclusion: Patients with early AS frequently have abnormalities on HRCT, even though they have normal PFT and chest X-ray. Small airway involvement was found as frequent as interstitial lung disease in early AS.

  13. Radiology illustrated. Chest radiology

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kyung Soo [Sungkyunkwan Univ. School of Medicine, Seoul (Korea, Republic of). Dept. of Radiology; Han, Joungho [Sungkyunkwan Univ. School of Medicine, Seoul (Korea, Republic of). Dept. of Pathology; Chung, Man Pyo [Sungkyunkwan Univ. School of Medicine, Seoul (Korea, Republic of). Dept. of Medicine; Jeong, Yeon Joo [Pusan National Univ. Hospital, Busan (Korea, Republic of). Dept. of Radiology

    2014-04-01

    Pattern approach to the diagnosis of lung diseases based on CT scan appearances. Guide to quick and reliable differential diagnosis. CT-pathology correlation. Emphasis on state-of-the-art MDCT. The purpose of this atlas is to illustrate how to achieve reliable diagnoses when confronted by the different abnormalities, or ''disease patterns'', that may be visualized on CT scans of the chest. The task of pattern recognition has been greatly facilitated by the advent of multidetector CT (MDCT), and the focus of the book is very much on the role of state-of-the-art MDCT. A wide range of disease patterns and distributions are covered, with emphasis on the typical imaging characteristics of the various focal and diffuse lung diseases. In addition, clinical information relevant to differential diagnosis is provided and the underlying gross and microscopic pathology is depicted, permitting CT-pathology correlation. The entire information relevant to each disease pattern is also tabulated for ease of reference. This book will be an invaluable handy tool that will enable the reader to quickly and easily reach a diagnosis appropriate to the pattern of lung abnormality identified on CT scans.

  14. Identifying murder victims with endodontic radiographs

    Science.gov (United States)

    Silva, Rhonan Ferreira; Franco, Ademir; Mendes, Solon Diego Santos Carvalho; Picoli, Fernando Fortes; Nunes, Fernando Gomes; Estrela, Carlos

    2016-01-01

    Endodontics is a special branch of dentistry constantly guided by imaging examinations. From a forensic scope, endodontics plays a valuable role providing solid antemortem (AM) radiographic evidence for comparison with postmortem findings in human identifications. This study illustrates the interface between endodontics and forensic odontology describing three cases of human identification based on radiographic endodontic records. From 2009 to 2012, three unknown male victims of murder were examined in a local Brazilian medico-legal institute to retrieve identity and potential cause of death. Specifically, when asked for AM data, a relative of the three victims provided periapical radiographs of endodontic treatments. Based on that, forensic dentists reproduced the same imaging acquisition techniques obtaining similar periapical radiographs, enabling a comparative dental identification. All the victims were positively identified based on patterns of dental morphology and treatment intervention. This study draws the attention of general and forensic dentists highlight the importance of properly recording dental treatments and searching for evidence in AM endodontic data, respectively. PMID:28123272

  15. Pulmonary manifestations of wegener granulomatosis: CT findings in 57 patients and a review of the literature

    Energy Technology Data Exchange (ETDEWEB)

    Lohrmann, Christian; Uhl, Markus; Kotter, Elmar; Burger, Dieter; Ghanem, Nadir; Langer, Mathias

    2005-03-01

    Wegener granulomatosis is a multisystem disease of unknown cause characterized by a necrotizing granulomatous vasculitis. In comparison to other vasculitides, the lung is the most common organ involved in wegener granulomatosis presenting with a very aggressive airways pathology and chronic relapsing course. Chest radiographs fail to describe the pattern and distribution of thoracic pathology sufficiently, and CT has shown to be more sensitive for detecting lung involvement. We present the CT findings of 57 patients with wegener granulomatosis and a review of the literature.

  16. Radiographic workload and use factors for orthopedic facilities

    Energy Technology Data Exchange (ETDEWEB)

    Bushong, S.C.; Glaze, S.A.

    1983-01-01

    Observations of technique factors at 9 radiographic installations dedicated to orthopedic radiography have been made. Monthly area radiation measurements with thermoluminescent dosimeters were made at three of these facilities. The results of these observations and measurements suggest that current NCRP recommended assumptions utilized in protective barrier computations result in considerably more shielding than is necessary. We observed an average workload of 224 mA min/wk and a maximum weekly average of 670 mA min/wk. The use factor for the chest wall averaged 5%. That for all other vertical barriers was less than 1%. The average operating potential was 75 kVp. Room radiation measurements confirm the suggestion that at least two of the walls and the control booth barrier in an orthopedic radiographic facility may be considered secondary barriers.

  17. Radiographic features of bisphosphonate therapy in pediatric patients

    Energy Technology Data Exchange (ETDEWEB)

    Grissom, L.E.; Theodore Harcke, H. [Dept. of Medical Imaging, Alfred I. duPont Hospital for Children, Nemours Children' s Clinic, Wilmington, DE (United States)

    2003-04-01

    Background: Pediatric patients are being treated with bisphosphonates for low bone mineral density. Skeletal radiographic findings have been described with bisphosphonates given orally and intravenously. Objective: To determine and describe the radiographic findings of cyclic intravenous bisphosphonate therapy in the growing skeleton. Materials and methods: Retrospective review of radiographs of 32 patients with osteogenesis imperfecta or cerebral palsy treated with intravenous bisphosphonates on a quarterly schedule. Results: Principal observations were metaphyseal bands and increased bone mineral density. The bands varied in spacing according to the age of the patient, rate of growth, and the location of the metaphysis. Fractures continued to be seen in patients with osteogenesis imperfecta. Conclusion: Cyclic bisphosphonate therapy results in distinctive radiographic findings in the growing skeleton. (orig.)

  18. The future for the radiographer

    DEFF Research Database (Denmark)

    Mussmann, Bo Redder

    2007-01-01

    implemented reporting as a part of the radiographers line of work. They report on peripheral skeleton and ultrasoundexaminations which they have done for quite some time now, and the next move will be the pelvis and the vertebral column. The implementation of the reporting radiographers has contributed...

  19. CHEST WALL HAMARTOMA : Case Report

    OpenAIRE

    Gülden DİNİZ; Ortaç, Ragıp; Aktaş, Safiye; TEMİR, Günyüz; HOŞGÖR, Münevver; Karaca, İrfan

    2005-01-01

    A case of four-month – old girl diagnosed as chest wall hamartoma is presented. This entity is an extremely rare but characteristic lesion of the ribs usually presenting in the neonate or infant with a mass or respiratory symptoms. Complete sponraneous regression of the lesion has been reported. Recently conservative management of asymptomatic childiren was recommended. Although rare, this condition ought to be kept in mind while dealing with infantile chest wall masses to avoid an errone...

  20. CHEST WALL HAMARTOMA : Case Report

    OpenAIRE

    Gülden DİNİZ; Ortaç, Ragıp; Aktaş, Safiye; HOŞGÖR, Günyüz TEMİR2Münevver; Karaca, İrfan

    2005-01-01

    A case of four-month – old girl diagnosed as chest wall hamartoma is presented. This entity is an extremely rare but characteristic lesion of the ribs usually presenting in the neonate or infant with a mass or respiratory symptoms. Complete sponraneous regression of the lesion has been reported. Recently conservative management of asymptomatic childiren was recommended. Although rare, this condition ought to be kept in mind while dealing with infantile chest wall masses to avoid...

  1. Pitfalls and variants in pediatric chest imaging.

    Science.gov (United States)

    García Asensio, D; Fernández Martín, M

    2016-05-01

    Most pitfalls in the interpretation of pediatric chest imaging are closely related with the technique used and the characteristics of pediatric patients. To obtain a quality image that will enable the correct diagnosis, it is very important to use an appropriate technique. It is important to know how technical factors influence the image and to be aware of the possible artifacts that can result from poor patient cooperation. Moreover, radiologists need to be familiar with the normal anatomy in children, with the classic radiologic findings, and with the anatomic and developmental variants to avoid misinterpreting normal findings as pathological.

  2. Unilateral chest wall anomaly in a patient with Gardner' s syndrome: A case report

    Energy Technology Data Exchange (ETDEWEB)

    Song, Eun Hee; Lee, So Yeon; Park, Hee Jin; Kwon, Heon Ju; Kim, Mi Sung; Park, Hae Won; Kwang, Hyon Joo [Dept. of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Kim, Hye Jin [Dept. of Radiology, Eulji General Hospital, Eulji University School of Medicine, Seoul (Korea, Republic of)

    2014-05-15

    Gardner syndrome is a familial disease consisting of colonic polyposis, osteomas, and soft tissue tumors. We describe unilateral chest wall anomaly in a 32-year-old man with Gardner syndrome. A chest radiograph showed asymmetric hypertrophy of the right seventh to tenth ribs. CT images showed increased size of the medullary portions of these lesions, but relatively normal thickness of the cortex. Intercostal muscles along the right seventh to tenth ribs were hypertrophied as compared with the contralateral ribs. Both lungs were clear but the volume of right lung showed slightly smaller than left one.

  3. Significance of findings of both emergency chest X-ray and thoracic computed tomography routinely performed at the emergency unit in 102 polytrauma patients. A prospective study; Relevanz der Befunde von Thoraxroentgen und Thorax-CT im routinemaessigen Schockraumeinsatz bei 102 polytraumatisierten Patienten. Eine prospektive Studie

    Energy Technology Data Exchange (ETDEWEB)

    Grieser, T.; Buehne, K.H.; Haeuser, H.; Bohndorf, K. [Zentralklinikum Augsburg (Germany). Klinik fuer Diagnostische Radiologie und Neuroradiologie

    2001-01-01

    Purpose: To evaluate prospectively whether and to what extent both thoracic computed tomography (Tx-CT) and supine X-ray of the chest (Rx-Tx) are able to show additional findings that are therapeutically relevant. Patients and Methods: According to a fixed study protocol, we performed Rx-Tx and Tx-CT in 102 consecutive, haemodynamically stable polytrauma patients (mean age, 41.2 yrs; age range, 12-93 yrs). Findings of therapeutical relevance drawn from both Tx-CT and Rx-Tx, and urgent interventions indicated by an attending trauma team were documented on a standardized evaluation sheet immediately. Any change in the patient's management that is different from routine life-saving procedures, and any therapeutical intervention done in the emergency room or elsewhere (operating theatre, angiographic facility) were considered therapeutically relevant. Results: Of 102 patients, 43 (42.2%) had a total of 51 therapeutically relevant findings. Rx-Tx alone yielded 23 relevant findings (45.1%) in 23 patients (22.5%). Of them, Tx-CT has shown additional important findings in 7 patients (30.4%). When Tx-CT alone is considered, it revealed 22 new findings of therapeutical relevance (43.2%) in 20 patients (46.5%). Altogether, Tx-CT was able to show 30 relevant findings in 27 patients, i.e., there was a therapeutical benefit for 26.5% of all polytrauma patients included. Most frequently, there was a need for chest-tube insertion (n=29). Conclusions: Polytrauma patients if haemodynamically stable may profit from computed tomography of the chest when therapeutically relevant thoracic injuries are looked for or early therapeutical interventions are to be checked. However, chest X-ray should stay as a 'front-line' screening method because of its superbly quick feasibility and availability. (orig.) [German] Ziel: Die prospektive Studie soll klaeren, ob und inwieweit eine Thoraxcomputertomographie (Tx-CT) unter Schockraumbedingungen gegenueber der Roentgen

  4. Oral health of individuals aged 3-80 years in Jönköping, Sweden during 40 years (1973-2013). II. Review of clinical and radiographic findings.

    Science.gov (United States)

    Norderyd, Ola; Koch, Göran; Papias, Apostolos; Köhler, Alkisti Anastassaki; Helkimo, Anna Nydell; Brahm, Carl-Otto; Lindmark, Ulrika; Lindfors, Ninita; Mattsson, Anna; Rolander, Bo; Ullbro, Christer; Gerdin, Elisabeth Wärnberg; Frisk, Fredrik

    2015-01-01

    The aim of this epidemiological study performed in 2013 was to analyze various clinical and radiographic data on oral health and compare the results to those of four cross-sectional studies carried out 1973-2003. In 1973, 1983, 1993, 2003, and 2013 random samples of 1,000; 1,104; 1,078; 987; and 1,010 individuals, respectively, were studied. The individuals were evenly distributed in the age groups 3, 5, 10, 15, 20, 30, 40, 50, 60, 70, and 80o years. Eighty-year-olds were not included in 1973. All subjects were inhabitants of the city of Jönköping, Sweden. The clinical and radiographic examination assessed edentulousness, removable dentures, implants, number of teeth, caries, restorations, oral hygiene, calculus, periodontal status, and endodontic treatment. The frequency of edentulous individuals aged 40-70 years was 16, 12, 8, 1, and 0.3% in 1973, 1983, 1993, 2003, and 2013, respectively. No complete denture weareryounger than 80-years old was found in 2013. During the 40-year period, the mean number of teeth in the age groups 30-80 years increased. In 2013, the 60-year-olds had nearly complete dentitions. Implants were found in all age groups from 30 years of age. The total number of individuals with implants was 36 in 2013. This was higher than earlier surveys, 4 in 1993, and 18 in 2003. The percentage of children and adults without caries and restorations increased during the 40-year period. It was found that the percentage of caries-free 3- and 5-year-olds were 79% and 69%, respectively, of the individuals in 2013. In the age groups 10-20 years, the percentage of caries-free individuals increased between 2003 and 2013. In 2013, 43% of the 15-year-olds were completely free from caries and restorations compared to 20% in 2003. In all age groups 5-60 years, DFS was lower in 2013 compared to the earlier examinations.There was no major change in DFS between 2003 and 2013 in the age groups 70 and 80 years. The most obvious change was the decrease in number of FS

  5. Oral health of individuals aged 3-80 years in Jönköping, Sweden during 30 years (1973-2003). II. Review of clinical and radiographic findings.

    Science.gov (United States)

    Hugoson, Anders; Koch, Göran; Göthberg, Catharina; Helkimo, Anna Nydell; Lundin, Sven-Ake; Norderyd, Ola; Sjödin, Bengt; Sondell, Katarina

    2005-01-01

    The aim of this epidemiological study was to analyze various clinical and radiographic data on oral health and compare the results to those of three cross-sectional studies carried out in 1973 and 1983, and 1993. In 1973, 1983, 1993, and 2003 a random sample of 1,000; 1,104; 1,078; and 987 individuals, respectively, were studied. The individuals were evenly distributed in the age groups 3, 5, 10, 15, 20, 30, 40, 50, 60, 70, and 80 years. In 1973 80-year-olds were not included. All subjects were inhabitants of the City of Jönköping, Sweden. The clinical and radiographic examination assessed edentulousness, removable dentures, implants, number of teeth, caries, restorations and overhangs, oral hygiene, calculus, periodontal status, endodontic treatment, and periapical status. The number of edentulous individuals in the age groups 40-70 years was reduced from 16 per cent in 1973 to 8 per cent in 1993, and to 1 per cent in 2003. The mean number of teeth increased, and up to the age of 60 years, individuals had more or less complete dentitions. During the 30-year period,the number of carious lesions and restorations decreased in general. In the 15-year-olds the decrease in number of restored tooth surfaces was 900 per cent and the corresponding figure for 30-year-olds was 79 per cent. The age groups 60-800 years showed an increase in number of restored tooth surfaces and had as a mean 50 filled tooth surfaces. The oral health among 3-5-year-olds improved markedly between 1973 and 1993. In 2003, however, there was no further improvement in 3- and 5-year-olds compared to 1993. Generally, restorations in 2003 exhibited a high quality and 90-95 per cent had no proximal overhangs. In 1973 this figure was about 60 per cent. In the age groups 20-50 years there were continuously fewer teeth fitted with crowns or bridges during the 30-year period. In 1973 the 50-year-olds had a mean of 24.5 per cent of the teeth crowned and in 2003 6.8 percent. Compared to data from 1973 there

  6. An enlarged sella turcica on cephalometric radiograph.

    Science.gov (United States)

    Chang, H-P; Tseng, Y-C; Chou, T-M

    2005-09-01

    A 28-year-old male presented to the Orthodontic clinic for correction of his anterior crossbite due to mandibular prognathism as a result of pituitary adenoma with acromegaly. A radiographic cephalometric analysis and clinical orthodontic examination were made. This article describes in detail the methods of correcting the magnification of cephalometric linear measurements in sellar dimensions (length, depth and width) from lateral and posteroanterior cephalograms. Cephalometric findings revealed that the sella enlarged in all its dimensions with a deepening of the floor in this acromegalic case. We discuss the radiographic diagnosis of an enlarged sella turcica in intrasellar tumours and also emphasise the dentist's important role in the initial diagnosis of pituitary adenoma cases.

  7. Film holder for radiographing tubing

    Science.gov (United States)

    Davis, Earl V.; Foster, Billy E.

    1976-01-01

    A film cassette is provided which may be easily placed about tubing or piping and readily held in place while radiographic inspection is performed. A pair of precurved light-impervious semi-rigid plastic sheets, hinged at one edge, enclose sheet film together with any metallic foils or screens. Other edges are made light-tight with removable caps, and the entire unit is held securely about the object to be radiographed with a releasable fastener such as a strip of Velcro.

  8. Radiographic study of mandibular asymmetry

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Yeon Hwa; Cho, Bong Hae [Dept. of Oral and Maxillofacial Radiology, College of Dentistry, Pusan National University, Pusan (Korea, Republic of)

    1998-02-15

    The purpose of this study was to perform the radiographic measurements and temporomandibular joint evaluation in mandibular asymmetry. For this study, thirty-two patients who have mandibular asymmetry were selected and submentovertex, panoramic and lateral corrected tomographic radiographs were taken. Horizontal and vertical analysis using various landmarks on these radiographs were performed. Also radiographic and clinical evaluation of temporomandibular joint were obtained. The results were as follows: 1. On the submentovertex radiograph, the mean distance of Pogonion to midline was 5.0 {+-} 3.8 mm. 2. The mean distance of Pogonion to Gonion between the deviated and the contra-lateral side (p<0.001). 3. The distance difference of Pogonion to Gonion between the deviated and the contra-lateral side was significantly related to the degree of asymmetry (p<0.001). 4. On panoramic radiograph,the condylar height of the contral-lateral side was significantly longer than the one of the deviated side (p<0.001). 5. On lateral corrected tomogram, bony of temporomandibular joint was observed in 11 condyles of the deviated side and 9 condyles of the contra-lateral side. Erosion and ostephyte were the most common changes in both the deviated and the contra-lateral sides.

  9. Contemporary management of flail chest.

    Science.gov (United States)

    Vana, P Geoff; Neubauer, Daniel C; Luchette, Fred A

    2014-06-01

    Thoracic injury is currently the second leading cause of trauma-related death and rib fractures are the most common of these injuries. Flail chest, as defined by fracture of three or more ribs in two or more places, continues to be a clinically challenging problem. The underlying pulmonary contusion with subsequent inflammatory reaction and right-to-left shunting leading to hypoxia continues to result in high mortality for these patients. Surgical stabilization of the fractured ribs remains controversial. We review the history of management for flail chest alone and when combined with pulmonary contusion. Finally, we propose an algorithm for nonoperative and surgical management.

  10. Active case finding of tuberculosis in Europe: a Tuberculosis Network European Trials Group (TBNET) survey

    DEFF Research Database (Denmark)

    Bothamley, G.H.; Ditiu, L.; Migliori, G.B.;

    2008-01-01

    countries do not, even if the chest radiograph suggests tuberculosis. Nearly all countries (49 out of 50) use tuberculin skin testing (TST); 27 (54%) out of 50 countries also perform chest radiography irrespective of the TST result. Interpretation of the TST varies widely. All countries use 6-9 months...

  11. The radiographic features of rheumatoid arthritis in HLA-B27-positive patients

    Energy Technology Data Exchange (ETDEWEB)

    Rundback, J.H. (Dept. of Radiology, Beth Israel Medical Center, New York, NY (United States)); Rosenberg, Z.S. (Dept. of Radiology, Hospital for Joint Diseases, Orthopaedic Inst., New York, NY (United States)); Solomon, G. (Dept. of Rheumatology, Hospital for Joint Diseases, Orthopaedic Institute, New York, NY (United States))

    1993-05-01

    Radiographs were reviewed in a group of nine patients with classical seropositive rheumatoid arthritis who on tissue typing were found to express the class I HLA-B27 allele. Radiographs were analyzed with regard to whether or not they demonstrated radiographic features of (1) classical rheumatoid arthritis, (2) seronegative arthritis, or (3) mixed features of rheumatoid and seronegative arthritis. Five patients (55%) displayed radiographic features consistent with a diagnosis of rheumatoid arthritis, two patients (22%) showed radiographic features of seronegative disorder (periostitis and sacroiliitis), and two patients (22%) showed a mixed picture with evidence of both rheumatoid arthritis and a seronegative disorder. Thus, the HLA-B27 allele contributed to the radiographic features in 44% of patients with rheumatoid arthritis and associated HLA-B27. Thus, the wide range of findings in our population indicates that the radiographic attributes are not specific enough to constitute a unique subpopulation of patients with rheumatoid arthritis. (orig.)

  12. Radiographic and scintigraphic evaluation of total knee arthroplasty

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, R.; Soudry, M.

    1986-04-01

    Various radiographic and scintigraphic methods are used to supplement clinical findings in the evaluation of total knee arthroplasty and its complications. Serial roentgenograms offer reliable information for diagnosing mechanical loosening. Wide and extensive radiolucency at the cement-bone interface and shift in position and alignment of prosthetic components can be seen in almost all cases by the time revision is necessary. Radiographic abnormalities are usually not present in acute infection, but are often present in chronic infection. Bone scanning has a high sensitivity for diagnosis of infection or loosening, but is nonspecific because increased uptake is often present around asymptomatic total knee arthroplasties with normal radiographs. Differential bone and Gallium scanning and scanning with Indium 111-labeled leukocytes have a greater specificity for diagnosis of infection than does bone or Gallium scanning alone. Routine radiographic and scintigraphic studies have shown a high incidence of deep vein thrombosis in the calf after total knee arthroplasty. Clinically significant pulmonary embolization is infrequent.

  13. COMBINED EFFECT OF PNF STRETCHING WITH CHEST MOBILITY EXERCISES ON CHEST EXPANSION AND PULMONARY FUNCTIONS FOR ELDERLY

    Directory of Open Access Journals (Sweden)

    Vinod Babu .K

    2015-06-01

    Full Text Available Background: PNF stretching and chest mobility exercises found to be effective in elder patients, however the combined effectiveness of these techniques were unknown. The purpose of this study is to find the effect of Hold-relax PNF stretching technique for pectoralis muscle combined with chest mobility exercises on improvement of chest expansion and pulmonary function for elderly subjects. Method: An Experimental study design, 30 subjects with age group above 60 years were randomized 15 subjects each into Study and Control group. Control group received Supervised Active Assisted Exercise Program while Study group received Hold-relax PNF Stretching for pectoralis muscle, Chest Mobility Exercises Program and supervised Active Assisted Exercise Program for a period of one week. Outcome measures such as chest expansion at axilla and xiphisternum and pulmonary function test such as FEV1, FVC and FEV1/FVC were measured before and after one week of treatment. Results: Analysis using paired ‘t’ test within the group found that there is no statistically significant difference within control group where as there is a statistical significant difference within study group. Comparative analysis of pre-intervention means shown that there is no statistically significant difference between the groups. Comparative analysis of post-intervention means shown that there is a statistically significant difference in means of Chest expansion, FEV1/FVC and there is no statistical significant difference in FEV1 and FVC between study and control groups. Conclusion: It is concluded that one week of combined Hold-relax PNF stretching for pectoralis muscle with chest mobility exercises shown significant improvement in chest expansion and pulmonary function test such as forced expiratory volume and forced vital capacity than only active assisted exercise program for elderly subjects.

  14. A fatal case of middle east respiratory syndrome corona virus infection in South Korea: Cheat radiography and CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Seung Eun; Kim, Hyo Lim; Choi, Su Mi [Dept. of Internal Medicine, Yeouido St. Mary' s Hospital, The Catholic University of Korea College of Medicine, Seoul (Korea, Republic of)

    2016-06-15

    The outbreak of Middle East Respiratory Syndrome Corona Virus (MERS-CoV) infection in South Korea originated from Saudi Arabia. This virus shows high infectivity, and causes outbreaks of severe febrile respiratory infections in health care-associated settings. Herein, we reported a fatal case of MERS-CoV infection with a focus on the pulmonary radiologic findings. The initial chest computed tomography and radiographs of our patient showed ground-glass opacity in patchy distribution, followed by rapid progression of consolidation and pleural effusion in serial studies.

  15. Prevalence Of Lung Involvement Due To Rheumatoid Arthritis Based On Clinical, Radiographic And Pulmonary Functions Test

    Directory of Open Access Journals (Sweden)

    Sedighi N

    2004-07-01

    Full Text Available Background: Pulmonary involvement is a common and serious complication of rheumatoid arthritis. This cross sectional study sought to determine the prevalence of pulmonary disease in patients with rheumatoid arthritis on the basis of history, physical examination, chest X-ray and PFT. Materials and Methods: 103 patients (81 Women, 22 Men fulfilling the ACR (American College of Rheumatology criteria for RA (Rheumatoid arthritis were consecutively included in a cross sectional study. Detailed medical (including respiratory symptoms and the disease activity symptoms and drug and occupational histories and smoking were obtained. All patients underwent a complete pulmonary and rheumatologic examination and conventional chest radiography. All patients underwent PFT that comprised spirometry and body plethysmography. Results for PFTs were expressed as percentage of predicted values for each individual adjusted for age, sex, and height. Results: On the basis of history: Their mean age was 43.3 ± 2.6 years (range: 17-74 and the mean duration of the disease was 69.3 ± 15.6 months. Rheumatoid factor was positive in% 61.2. No patients were 0.5Pack/Year smoker in whole life. Prevalence of pulmonary involvement based on radiographic and pulmonary function test detected in 41 patients (39/7%. The most frequent respiratory clinical finding was dyspnea (33%, (NYHA grade I in 17.5% and NYHA grade II in 15.5%, Cough (with or without sputum in 13.6 %, Crackle was the most sign in pulmonary examination (5.8%. Chest X-ray was abnormal in 13.3 % that the most common finding in this study was reticulonodular pattern in 20 patients (19.4 %, and pleural effusion detected in 7 patients (6.7%. PFT was abnormal in 30 patients (29.1 %. A significant decrease of FEF 25%-75% below 1.64 SD. Small airway involvements was the most abnormal finding of PFT. No relation between rheumatoid arthritis disease activity (ESR>30, Morning stiffness>30', Anemia, thrombocytosis with

  16. Gallstone ileus: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Delabrousse, E.; Bartholomot, B.; Sohm, O.; Kastler, B. [Dept. of Radiology A, CHU Jean Minjoz, University of Besancon (France); Wallerand, H. [Dept. of Surgery, CHU Jean Minjoz, University of Besancon (France)

    2000-06-01

    Gallstone ileus is a rare complication of recurrent gallstone cholecystitis. The classic radiographic triad of small bowel obstruction, pneumobilia and ectopic gallstone on abdominal plain radiograph is described with CT imaging. Because of the better resolution of CT compared with abdominal radiography and its recent accession to emergency use, radiologists should be aware of CT findings of gallstone ileus. We report a case in which gallstone ileus was initially diagnosed by CT. (orig.)

  17. High-resolution computed tomography findings from adult patients with Influenza A (H1N1) virus-associated pneumonia

    Energy Technology Data Exchange (ETDEWEB)

    Marchiori, Edson [Fluminense Federal University, Rio de Janeiro (Brazil); Federal University of Rio de Janeiro, Rio de Janeiro (Brazil)], E-mail: edmarchiori@gmail.com; Zanetti, Glaucia [Federal University of Rio de Janeiro, Rio de Janeiro (Brazil)], E-mail: glauciazanetti@gmail.com; Hochhegger, Bruno [Federal University of Rio de Janeiro, Rio de Janeiro (Brazil)], E-mail: brunohochhegger@gmail.com; Rodrigues, Rosana Souza [Federal University of Rio de Janeiro, Rio de Janeiro (Brazil); D' OR Institute for Research and Education, Rio de Janeiro (Brazil)], E-mail: rosana.souzarodrigues@gmail.com; Fontes, Cristina Asvolinsque Pantaleao [Fluminense Federal University, Rio de Janeiro (Brazil)], E-mail: cristinasvolinsque@gmail.com; Nobre, Luiz Felipe [Santa Catarina Federal University, Florianopolis (Brazil)], E-mail: luizfelipenobresc@gmail.com; Dias Mancano, Alexandre [Anchieta Hospital, Taguatinga, DF (Brazil)], E-mail: alex.manzano1@gmail.com; Meirelles, Gustavo [Sao Paulo Federal University, Sao Paulo (Brazil)], E-mail: gmeirelles@gmail.com; Irion, Klaus Loureiro [Liverpool Heart and Chest Hospital NHS Trust, Liverpool (United Kingdom); Royal Liverpool and Broadgreen University Hospital NHS, Liverpool (United Kingdom)], E-mail: klaus.irion@btinternet.com

    2010-04-15

    Objective: The aim of this study was to assess the high-resolution computed tomography (HRCT) findings at presentation in patients diagnosed with Influenza A (H1N1) virus-associated pneumonia. Materials and methods: We reviewed the HRCT findings from 20 patients diagnosed with Influenza A (H1N1) and compared their HRCT scans with chest radiographs, obtained on the same day. The imaging studies were obtained 4-9 days after the onset of symptoms. The patients included 11 men and 9 women (ages 24-62 years; mean 42.7 years). All patients had a body temperature greater than 100.4 deg. F (>38 deg. C), tachypnea, and cough. Other common symptoms included diarrhea (60%) and sore throat (30%). The radiographs and HRCT scans were reviewed independently by two observers who reached a consensus decision. Results: The predominant HRCT findings consisted of bilateral ground-glass opacities (n = 12), bilateral areas of consolidation (n = 2), or a mixed bilateral pattern of ground-glass opacities and areas of consolidation (n = 6). The abnormalities were bilateral in all of the 20 patients, had a predominantly sub-pleural distribution in 13 patients, and had a random distribution in the remaining 7 patients. The predominant radiographic findings were consolidations. Normal radiographs were found in 4 out of the 20 patients. Conclusion: HRCT may reveal parenchymal abnormalities in patients with Influenza A (H1N1) infection who have normal findings on radiographs. The predominant HRCT findings were bilateral, peripheral, ground-glass opacities and/or bilateral areas of consolidation. The patients who presented consolidations had more severe clinical course.

  18. Catheters, wires, tubes and drains on postoperative radiographs of pediatric cardiac patients: the whys and wherefores

    Energy Technology Data Exchange (ETDEWEB)

    Teele, Sarah A.; Thiagarajan, Ravi R. [Children' s Hospital Boston, Department of Cardiology, Boston, MA (United States); Harvard Medical School, Department of Pediatrics, Boston, MA (United States); Emani, Sitaram M. [Children' s Hospital Boston, Department of Cardiac Surgery, Boston, MA (United States); Harvard Medical School, Department of Surgery, Boston, MA (United States); Teele, Rita L. [Harvard Medical School, Department of Radiology, Boston, MA (United States); Starship Children' s Hospital, Department of Radiology, Grafton (New Zealand)

    2008-10-15

    Surgical treatment of congenital heart disease has advanced dramatically since the first intracardiac repairs in the mid-20th century. Previously inoperable lesions have become the focus of routine surgery and patients are managed successfully in intensive care units around the world. As a result, increasing numbers of postoperative images are processed by departments of radiology in children's hospitals. It is important that the radiologist accurately documents and describes the catheters, wires, tubes and drains that are present on the chest radiograph. This article reviews the reasons for the placement and positioning of perioperative equipment in children who have surgical repair of atrial septal defect, ventricular septal defect or transposition of the great arteries. Also included are a brief synopsis of each cardiac anomaly, the surgical procedure for its correction, and an in-depth discussion of the postoperative chest radiograph including illustrations of catheters, wires, tubes and drains. (orig.)

  19. Radiographically Severe but Clinically Mild Reexpansion Pulmonary Edema following Decompression of a Spontaneous Pneumothorax

    Directory of Open Access Journals (Sweden)

    William E. Harner

    2014-01-01

    Full Text Available The case is a 48-year-old female who presented with mild dyspnea on exertion and cough with unremarkable vital signs and was found to have a large right sided pneumothorax. She underwent small bore chest tube decompression with immediate reexpansion of the collapsed lung. However, she rapidly developed moderate hypoxemia and radiographic evidence of reexpansion pulmonary edema (REPE on both the treated and contralateral sides. Within a week, she had a normal chest X-ray and was asymptomatic. This case describes a rare complication of spontaneous pneumothorax and highlights the lack of correlation between symptoms, sequelae, and radiographic severity of pneumothorax and reexpansion pulmonary edema. Proposed pathophysiologic mechanisms include increased production of reactive oxygen species with subsequent loss of surfactant and increased vascular permeability, and loss of vasoregulatory tone.

  20. Radiographically Severe but Clinically Mild Reexpansion Pulmonary Edema following Decompression of a Spontaneous Pneumothorax

    Science.gov (United States)

    Harner, William E.; Crawley, Eric A.

    2014-01-01

    The case is a 48-year-old female who presented with mild dyspnea on exertion and cough with unremarkable vital signs and was found to have a large right sided pneumothorax. She underwent small bore chest tube decompression with immediate reexpansion of the collapsed lung. However, she rapidly developed moderate hypoxemia and radiographic evidence of reexpansion pulmonary edema (REPE) on both the treated and contralateral sides. Within a week, she had a normal chest X-ray and was asymptomatic. This case describes a rare complication of spontaneous pneumothorax and highlights the lack of correlation between symptoms, sequelae, and radiographic severity of pneumothorax and reexpansion pulmonary edema. Proposed pathophysiologic mechanisms include increased production of reactive oxygen species with subsequent loss of surfactant and increased vascular permeability, and loss of vasoregulatory tone. PMID:25165607

  1. A 34-Year-Old Woman With Recurrent Right-Sided Chest Pain and Dyspnea.

    Science.gov (United States)

    Albores, Jeffrey; Fishbein, Gregory; Bando, Joanne

    2015-11-01

    A 34-year-old woman presented with her third episode of acute-onset right-sided chest pain and dyspnea. She had two prior similar occurrences of right-sided sharp, pleuritic chest pain with radiation to the back and dyspnea. Chest radiographs during these presentations revealed a small apical right-sided pneumothorax that was managed conservatively with high-flow oxygen. All three presentations were associated with vigorous exercise and the first day of her menses. She denied cough, hemoptysis, fever, smoking history, airplane travel, scuba diving, or trauma during these presentations. The patient has been trying to conceive for the past year but has been unsuccessful because of uterine fibroids but no history of endometriosis.

  2. Development of a simple reliable radiographic scoring system to aid the diagnosis of pulmonary tuberculosis.

    Directory of Open Access Journals (Sweden)

    Lancelot M Pinto

    Full Text Available RATIONALE: Chest radiography is sometimes the only method available for investigating patients with possible pulmonary tuberculosis (PTB with negative sputum smears. However, interpretation of chest radiographs in this context lacks specificity for PTB, is subjective and is neither standardized nor reproducible. Efforts to improve the interpretation of chest radiography are warranted. OBJECTIVES: To develop a scoring system to aid the diagnosis of PTB, using features recorded with the Chest Radiograph Reading and Recording System (CRRS. METHODS: Chest radiographs of outpatients with possible PTB, recruited over 3 years at clinics in South Africa were read by two independent readers using the CRRS method. Multivariate analysis was used to identify features significantly associated with culture-positive PTB. These were weighted and used to generate a score. RESULTS: 473 patients were included in the analysis. Large upper lobe opacities, cavities, unilateral pleural effusion and adenopathy were significantly associated with PTB, had high inter-reader reliability, and received 2, 2, 1 and 2 points, respectively in the final score. Using a cut-off of 2, scores below this threshold had a high negative predictive value (91.5%, 95%CI 87.1,94.7, but low positive predictive value (49.4%, 95%CI 42.9,55.9. Among the 382 TB suspects with negative sputum smears, 229 patients had scores <2; the score correctly ruled out active PTB in 214 of these patients (NPV 93.4%; 95%CI 89.4,96.3. The score had a suboptimal negative predictive value in HIV-infected patients (NPV 86.4, 95% CI 75,94. CONCLUSIONS: The proposed scoring system is simple, and reliably ruled out active PTB in smear-negative HIV-uninfected patients, thus potentially reducing the need for further tests in high burden settings. Validation studies are now required.

  3. A prospective comparison of intestinal sonography and abdominal radiographs in a neonatal intensive care unit

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Cicero T. [The University of Toronto, The Hospital for Sick Children, Department of Diagnostic Imaging, Toronto (Canada); Yale University School of Medicine, New Haven, CT (United States); Daneman, Alan; Navarro, Oscar M. [The University of Toronto, The Hospital for Sick Children, Department of Diagnostic Imaging, Toronto (Canada); Moineddin, Rahim [The University of Toronto, The Hospital for Sick Children, Department of Family and Community Medicine, Toronto (Canada); Levine, Daniel [The University of Toronto, The Hospital for Sick Children, Department of Diagnostic Imaging, Toronto (Canada); The Royal Marsden NHS Foundation Trust, London (United Kingdom); Moore, Aideen M. [The University of Toronto, The Hospital for Sick Children, Department of Pediatrics, Toronto (Canada)

    2013-11-15

    No study reported in the literature comprehensively compares findings on neonatal abdominal radiographs with sonography. To compare the findings on abdominal radiographs and sonograms in infants in intensive care, to better understand how the various intestinal gas patterns on radiographs relate to the spectrum of appearances on sonography and, second, to evaluate the ability of sonography to differentiate necrotizing enterocolitis from other intestinal pathology. We prospectively evaluated sonograms and radiographs, blinded to the other modality and to clinical information. Patients' charts were reviewed by a third blinded reader and used as a reference standard for diagnosis. We made associations between sonographic findings, radiographic intestinal gas patterns and clinical diagnoses. We included 75 infants with gestational ages between 23 weeks and 41 weeks. Sonographic abnormalities were present in infants with all radiographic intestinal gas patterns, including normal patterns. We only saw absent intestinal perfusion and fluid collections on sonography (suggesting intestinal necrosis and sealed perforation) in infants with intestinal dilatation with elongation on radiographs. Separation of intestinal loops on radiographs was most commonly caused by reasons other than intestinal wall thickening. Increased intestinal echogenicity or free fluid with echoes on sonography correlated with a diagnosis of necrotizing enterocolitis, whereas anechoic free fluid correlated with absence of necrotizing enterocolitis. Sonography is complementary to radiographs in infants with suspected intestinal pathology, with a spectrum of appearances seen on each modality. Some sonographic findings either strongly suggest necrotizing enterocolitis or supply evidence against this diagnosis. (orig.)

  4. Patient-centered clinical impact of incidentally detected abnormalities on chest CT scans

    Directory of Open Access Journals (Sweden)

    Sherine G. Moftah

    2014-09-01

    Conclusion: The clinically significant different incidental abnormalities on chest CT scans represented 10.4% of all incidental findings, 3.3% were due to malignancies. The clinical impact of incidental abnormalities on chest CT may be of utmost importance on patient care.

  5. Monitoring Radiographic Brain Tumor Progression

    Directory of Open Access Journals (Sweden)

    John H. Sampson

    2011-03-01

    Full Text Available Determining radiographic progression in primary malignant brain tumors has posed a significant challenge to the neuroncology community. Glioblastoma multiforme (GBM, WHO Grade IV through its inherent heterogeneous enhancement, growth patterns, and irregular nature has been difficult to assess for progression. Our ability to detect tumor progression radiographically remains inadequate. Despite the advanced imaging techniques, detecting tumor progression continues to be a clinical challenge. Here we review the different criteria used to detect tumor progression, and highlight the inherent challenges with detection of progression.

  6. Calcifying aponeurotic fibroma: Case report with radiographic and MR features

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ok Hwa; Kim, Yeon Mee [Inje University College of Medicine, Haeundae Paik Hospital, Busan (Korea, Republic of)

    2014-02-15

    Calcifying aponeurotic fibroma is a rare, benign fibroblastic tumor. The lesion has a propensity for local invasion and a high recurrent rate. Therefore, accurate preoperative diagnosis and complete excision are important to prevent the recurrence of the tumor after surgical removal. However, radiographic and magnetic resonance imaging findings of calcifying aponeurotic fibroma have been extremely rarely described in the radiology literature. Thus, we report a rare case of calcifying aponeurotic fibroma affecting the dorsal wrist in a 67-year-old man, describe radiographic and MR findings, and discuss the differential diagnosis of the tumor.

  7. Calcifying aponeurotic fibroma: case report with radiographic and MR features.

    Science.gov (United States)

    Kim, Ok Hwa; Kim, Yeon Mee

    2014-01-01

    Calcifying aponeurotic fibroma is a rare, benign fibroblastic tumor. The lesion has a propensity for local invasion and a high recurrent rate. Therefore, accurate preoperative diagnosis and complete excision are important to prevent the recurrence of the tumor after surgical removal. However, radiographic and magnetic resonance imaging findings of calcifying aponeurotic fibroma have been extremely rarely described in the radiology literature. Thus, we report a rare case of calcifying aponeurotic fibroma affecting the dorsal wrist in a 67-year-old man, describe radiographic and MR findings, and discuss the differential diagnosis of the tumor.

  8. Actinomycosis - Left Post Chest Wall

    Directory of Open Access Journals (Sweden)

    Kafil Akhtar, M. Naim, S. Shamshad Ahmad, Nazoora Khan, Uroos Abedi, A.H. Khan*

    2008-01-01

    Full Text Available A forty year old female of weak body built presented with recurring small hard lumps in let posteriorchest wall for 3 years and discharging ulcers for 3 months duration. Clinically, the provisional diagnosiswas malignancy with secondary infection. FNAC showed features suggestive of dysplasia buthistopathology confirmed the diagnosis as actinomycosis. The present case is reported due to rare incidenceof actinomycosis at post chest wall with muscle involvement.

  9. Demonstration of digital radiographs by means of ink jet-printed paper copies: pilot study.

    Science.gov (United States)

    Kirkhorn, T; Kehler, M; Nilsson, J; Lyttkens, K; Andersson, B; Holmer, N G

    1992-11-01

    Different digital medical images have been printed on paper with a continuous ink jet printer, and the quality has been evaluated. The emphasis has been on digital chest radiographs from a computed radiography system. The ink jet printing technique is described as well as the handling of the image data from image source to printer. Different versions of paper prints and viewing conditions were compared to find the optimum alternative. The evaluation has been performed to maximize the quality of the paper images to make them conform with the corresponding film prints and monitor images as much as possible. The continuous ink jet technique offers high-quality prints on paper at a considerably lower cost per copy compared with the cost of a film print. With a future switch-over from diagnosing of digital images on film to diagnosing them on monitors, hard copies for demonstration purposes will occasionally be needed. This need can be filled by ink jet-printed paper copies.

  10. 新型甲型H1N1流感患者体内病毒载量与胸部CT表现的关系%The relationship between chest CT findings and viral load in patients with novel influenza A( H1N1 )

    Institute of Scientific and Technical Information of China (English)

    陆普选; 叶如馨; 单万水; 周伯平; 邓莹莹; 杨桂林; 刘映霞; 干芸根; 李国保; 刘威龙; 刘艳; 张晶

    2010-01-01

    目的 观察新型甲型H1N1流感(简称甲型流感)患者体内病毒载量与胸部CT表现的动态变化,探讨病毒载量与胸部CT表现对甲型流感的诊断、鉴别诊断及指导治疗的价值.方法 收集2009年5-12月深圳市第三人民医院收治的51例甲型H1N1流感核酸检测阳性的患者,均符合卫生部颁布的"甲型H1N1流感诊断标准",均行胸部X线及CT扫描(含高分辨率CT)并测定体内病毒载量.根据CT影像检查有否肺炎征象将甲型流感患者分为肺炎组31例和非肺炎组20例,观察胸部CT所见与病毒载量变化的关系.结果 (1)甲型流感肺炎组患者胸部CT主要表现为片状实变影,早期和吸收期表现为磨玻璃影,双肺散在小叶性或节段性阴影,以下肺叶多见,左下肺叶明显,可伴有纵隔淋巴结肿大,肺实质、肺间质及胸膜可同时受累;(2)发病甲期患者体内病毒载量高,肺炎组病毒载量的均值为7.7拷贝/ml,非肺炎组为4.2拷贝/ml;抗病毒治疗4 d(病程第6天)病毒核酸开始转阴;(3)3例肺炎患者中2例病毒核酸转阴时间快于胸部CT病灶吸收时间,而1例年幼患者的病毒核酸转阴时间明显延长.结论 甲型流感合并肺炎患者的病毒载量明显高于未合并肺炎的患者;动态观察甲型流感合并感肺炎患者的影像学表现及病毒载量的变化,有利于对甲型流感患者进行及时有效的治疗.%Objective To evaluate the value of chest CT findings and dynamic changes of viral load in patients with novel influenza A (H1N1) infection in clinical diagnosis, differential diagnosis and treatment Methods Fifty-one patients with confirmed novel influenza A (H1N1) according to the diagnostic criteria of the Ministry of Health, received chest X-ray, CT scans (HRCT) and viral load tests in our hospital from May to December of 2009. Based on whether there were signs of pneumonia in CT imaging,the patients were divided into a pneumonia group (n = 31 ) and a non

  11. Comparison of patient specific dose metrics between chest radiography, tomosynthesis, and CT for adult patients of wide ranging body habitus

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Yakun [Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Li, Xiang [Medical Physics Graduate Program, Department of Physics, Cleveland State University, Cleveland, Ohio 44115 (United States); Segars, W. Paul [Medical Physics Graduate Program, Carl E. Ravin Advanced Imaging Laboratories, and Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Samei, Ehsan, E-mail: samei@duke.edu [Medical Physics Graduate Program, Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Departments of Physics, Biomedical Engineering, and Electrical and Computer Engineering, Duke University Medical Center, Durham, North Carolina 27705 (United States)

    2014-02-15

    Purpose: Given the radiation concerns inherent to the x-ray modalities, accurately estimating the radiation doses that patients receive during different imaging modalities is crucial. This study estimated organ doses, effective doses, and risk indices for the three clinical chest x-ray imaging techniques (chest radiography, tomosynthesis, and CT) using 59 anatomically variable voxelized phantoms and Monte Carlo simulation methods. Methods: A total of 59 computational anthropomorphic male and female extended cardiac-torso (XCAT) adult phantoms were used in this study. Organ doses and effective doses were estimated for a clinical radiography system with the capability of conducting chest radiography and tomosynthesis (Definium 8000, VolumeRAD, GE Healthcare) and a clinical CT system (LightSpeed VCT, GE Healthcare). A Monte Carlo dose simulation program (PENELOPE, version 2006, Universitat de Barcelona, Spain) was used to mimic these two clinical systems. The Duke University (Durham, NC) technique charts were used to determine the clinical techniques for the radiographic modalities. An exponential relationship between CTDI{sub vol} and patient diameter was used to determine the absolute dose values for CT. The simulations of the two clinical systems compute organ and tissue doses, which were then used to calculate effective dose and risk index. The calculation of the two dose metrics used the tissue weighting factors from ICRP Publication 103 and BEIR VII report. Results: The average effective dose of the chest posteroanterior examination was found to be 0.04 mSv, which was 1.3% that of the chest CT examination. The average effective dose of the chest tomosynthesis examination was found to be about ten times that of the chest posteroanterior examination and about 12% that of the chest CT examination. With increasing patient average chest diameter, both the effective dose and risk index for CT increased considerably in an exponential fashion, while these two dose

  12. Airbag-related chest wall burn as a marker of underlying injury: a case report

    Directory of Open Access Journals (Sweden)

    Monkhouse Simon J

    2008-03-01

    Full Text Available Abstract Introduction This case of a man who sustained an airbag-induced thoracic injury and burn, highlights the potential harm that can be caused by airbags. It also serves to illustrate that a surface burn which looks small and benign can actually be a surface marker of a more serious injury. Staff working in emergency departments need to be aware of the risk of possible airbag-associated injuries. Case presentation A 65-year-old man was the driver in a frontal collision. He was wearing a seatbelt. The airbag was activated and caused a superficial chest wall burn. Initial chest x-rays were unremarkable but following deterioration in his condition, a computed tomography scan revealed a serious sternal fracture. The location of the fracture was marked on the surface by the burn. Conclusion Airbags can cause significant chest wall injuries and burns. Surface burns at the point of impact should not be dismissed as trivial as the forces involved can cause significant injury. We recommend that all people with chest wall injuries and/or burns due to airbags should have more detailed chest imaging as initial emergency radiographs can be falsely reassuring.

  13. Myeloid sarcoma of the rib: An atypical isolated chest finding

    Directory of Open Access Journals (Sweden)

    Antonio Raucci

    2015-03-01

    Systemic treatment was administered and currently neither systemic nor local relapse has been identified. Our experience suggests surgical resection could be a valid treatment in isolated myeloid sarcoma patients.

  14. CARDIOVASCULAR DISORDERS IN ADOLESCENTS WITH CHEST PAIN

    Directory of Open Access Journals (Sweden)

    Sri Endah Rahayuningsih

    2014-06-01

    Full Text Available Objective: To detect cardiovascular abnormalities in adolescents with chest pain. Methods: In this cross sectional study, the subjects were 25 adolescents with chest pain who came to the Cardiac Center of Dr. Hasan Sadikin General Hospital, Bandung during the period of January 2008 to January 2011. The presence of established cardiovascular disorders were based on history, physical examination, electrocardiography and echocardiography Results: It was found that 13/25 adolescents with chest pain had cardiovascular abnormalities. Of the 25 teens that came with chest pain, most of which showed normal electrocardiographic results, only 9/25 of those with dysrhythmias experienced sinus tachycardia and 8 had a first degree AV block. Echocardiography examination showed only four patients with abnormal cardiac anatomy. No correlation between nutritional status and chest pain, and cardiovascular abnormalities and chest pain (p=0.206 and p=0.632, respectively. There was a positive correlation between sex and cardiovascular abnormalities in adolescents with chest pain (p=0.007. Chest pain is a prevalent problem that is usually benign and that it frequently signals underlying cardiac disease. Conclusions: Cardiovascular abnormalities in adolescents with symptoms of chest pain are found in some cases. There is no correlation between female and male adolescents with chest pain and cardiovascular abnormalities.

  15. Radiological and clinical findings of pulmonary aspergillosis following solid organ transplant

    Energy Technology Data Exchange (ETDEWEB)

    Park, Y.S. [Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center (Korea, Republic of); Seo, J.B. [Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center (Korea, Republic of)], E-mail: seojb@amc.seoul.kr; Lee, Y.K. [Department of Radiology, Bundang CHA Hospital, University of Pocheon Jungmoon College of Medicine (Korea, Republic of); Do, K.H.; Lee, J.S.; Song, J.-W.; Song, K.S. [Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center (Korea, Republic of)

    2008-06-15

    Aim: To evaluate the radiological and clinical findings in patients with pulmonary aspergillosis after solid organ transplantation. Materials and methods: This study included 13 consecutive patients (five liver, four kidney, and four heart transplant; 10 male and three female; median age 54 years; range 13-63 years) with histologically confirmed pulmonary aspergillosis after solid organ transplantation at a tertiary referral hospital. Chest radiographs and computed tomography (CT) examinations performed for diagnosis were available in all patients. Radiological findings, such as lesion characteristics, location, and associated findings, were assessed retrospectively by two radiologists. The changes in radiological findings and clinical response after treatment were also assessed. Clinical findings, such as time of onset, initial symptoms, clinical course, and laboratory findings, were reviewed. Results: The most common radiographic and CT findings were pulmonary nodules or masses (n = 12). The number of nodules or masses was less than 10 in eight patients. Associated findings were surrounding ground-glass opacity (n = 4), central low density (n = 8), central air cavity (n = 5), and air bronchogram (n = 3). Follow-up radiographs and/or CT after treatment showed improvement in eight patients, persistence in two, and deterioration in three. The onset time of pulmonary aspergillosis was a median of 32 days (range 15-165 days). The most common symptom at diagnosis was fever (n = 6). Ten of 13 patients did not have leucopaenia. There were two aspergillosis-associated deaths during the follow-up period. Conclusion: The most common radiological finding of pulmonary aspergillosis after solid organ transplantation is multiple nodules or masses, which commonly appear within 1 month following transplantation.

  16. 21 CFR 892.1840 - Radiographic film.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Radiographic film. 892.1840 Section 892.1840 Food... DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1840 Radiographic film. (a) Identification. Radiographic film is a device that consists of a thin sheet of radiotransparent material coated on one or...

  17. An unusual cause for recurrent chest infections.

    LENUS (Irish Health Repository)

    Lobo, Ronstan

    2012-10-01

    We present a case of an elderly non-smoking gentleman who, since 2005, had been admitted multiple times for recurrent episodes of shortness of breath, wheeze, cough and sputum. The patient was treated as exacerbations of chronic obstructive pulmonary disease (COPD) and\\/or lower respiratory tract infections. Bronchoscopy was done which revealed multiple hard nodules in the trachea and bronchi with posterior tracheal wall sparing. Biopsies confirmed this as tracheopathia osteochondroplastica (TO). He had increasing frequency of admission due to methicillin-resistant Staphylococcus aureus and pseudomonas infections, which failed to clear despite intravenous, prolonged oral and nebulised antibiotics. The patient developed increasing respiratory distress and respiratory failure. The patient died peacefully in 2012. This case report highlights the typical pathological and radiological findings of TO and the pitfalls of misdiagnosing patients with recurrent chest infections as COPD.

  18. An atypical cause of atypical chest pain.

    Science.gov (United States)

    Zaheen, Ahmad; Siemieniuk, Reed A; Gudgeon, Patrick

    2014-09-01

    The present report describes a case involving a 57-year-old HIV-positive man who presented with acute retrosternal chest pain accompanied by 24 h of fever. Septic arthritis of the manubriosternal joint was diagnosed based on magnetic resonance imaging findings in addition to Staphylococcus aureus bacteremia. To the authors' knowledge, the present case is only the 12th reported case of manubriosternal septic arthritis, and the first in an HIV-positive patient. Early diagnosis and treatment can circumvent the need for surgical intervention. Based on the present case report and review of the literature, the authors summarize the epidemiology, appropriate imaging and suggestions for antibiotic therapy for this rare presentation.

  19. An Atypical Cause of Atypical Chest Pain

    Directory of Open Access Journals (Sweden)

    Ahmad Zaheen

    2014-01-01

    Full Text Available The present report describes a case involving a 57-year-old HIV-positive man who presented with acute retrosternal chest pain accompanied by 24 h of fever. Septic arthritis of the manubriosternal joint was diagnosed based on magnetic resonance imaging findings in addition to Staphylococcus aureus bacteremia. To the authors’ knowledge, the present case is only the 12th reported case of manubriosternal septic arthritis, and the first in an HIV-positive patient. Early diagnosis and treatment can circumvent the need for surgical intervention. Based on the present case report and review of the literature, the authors summarize the epidemiology, appropriate imaging and suggestions for antibiotic therapy for this rare presentation.

  20. Radiographic features of tuberculous osteitis in greater trochanter and lschium

    Energy Technology Data Exchange (ETDEWEB)

    Hahm, So Hee; Lee, Ye Ri [Hanil Hospital Affiliated to KEPCO, Seoul (Korea, Republic of); Kim, Dong Jin; Sung, Ki Jun [Yonsei Univ. Wonju College of Medicine, Wonju (Korea, Republic of); Lim, Jong Nam [Konkuk Univ. College of Medicine, Seoul (Korea, Republic of)

    1996-11-01

    To evaluate, if possible, the radiographic features of tuberculous osteitis in the greater trochanter and ischium, and to determine the cause of the lesions. We reterospectively reviewed the plain radiographic findings of 14 ptients with histologically proven tuberculous osteitis involving the greater trochanter and ischium. In each case, the following were analyzed:morphology of bone destruction, including cortical erosion;periosteal reaction;presence or abscence of calcific shadows in adjacent soft tissue. On the basis of an analysis of radiographic features and correlation of the anatomy with adjacent structures we attempted to determine causes. Of the 14 cases evaluated, 12 showed varrious degrees of extrinsic erosion on the outer cortical bone of the greater trochanter and ischium ; in two cases, bone destruction was so severe that the radiographic features of advanced perforated osteomyelitis were simulated. In addition to findings of bone destruction, in these twelve cases, the presence of sequestrum or calcific shadows was seen in adjacent soft tissue. Tuberculous osteitis in the greater trochanter and ischium showed the characteristic findings of chronic extrinsic erosion. On the basis of these findings we can suggest that these lesions result from an extrinsic pathophysiologic cause such as adjacent bursitis.

  1. CT findings of swyer-james-macleod syndrome in adults: are there any different findings with aging

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Mi Jin; Kim, Joung Sook; Kim, Ji Young; Kim, Soung Hee; Jeong, Myeong Ja; Kim, Soo Hyun; Kim, Jae Hyung [Sanggye Paik Hospital, Inje University College of Medicine, Seoul (Korea, Republic of); Bae, Sang Jin [National Police Hospital, Seoul (Korea, Republic of); Woo, Jeong Joo [Eulji Hospital, Eulji University College of Medicine, Daejeon (Korea, Republic of)

    2007-02-15

    We wanted to evaluate whether there is any different finding on CT with aging for the patients suffering with adult Swyer-James-MacLeod Syndrome (SJMS). We included 11 patients (7 males and 4 females) who underwent chest CT scan among 18 patients who were suspected of suffering with SJMS on chest radiographs. The range of age was from 28 to 85 years (mean: 58.5). We evaluated the diameter of both the main pulmonary artery (MPA) with its ratio, and the diameter of the pulmonary trunk (PT) to evaluate the possibility of pulmonary arterial hypertension, and the presence or absence of bronchiectasis. We also evaluated the relationships between these findings and aging. SJMS affected the left lung in 10 of 11 patients. The mean diameter of the main pulmonary artery of the normal lung was 2.5 cm and it was 1.6 cm in the involved site. The mean ratio of the normal MPA diameter to the involved one was 1.6 and this did not correlate with age ({rho} > 0.1). The mean diameter of the pulmonary trunk was 2.8 cm and this increased with age ({rho} < 0.05). There was bronchiectasis in 6 of 11 patients, and the ratio of bronchiectasis did not correlate with age ({rho} > 0.5). SJMS absolutely affected the left lung much more than right lung. All the patients demonstrated about 1.6 times the compensatory hypertrophy of MPA of the normal lung compared with that of the affected lung on chest CT, which was irrespective of age. The presence or absence of bronchiectasis has no correlation with age.

  2. Neural network-based detection of pulmonary nodules on chest radiography; Identificazione mediante reti neurali dei noduli polmonari nel radiogramma del torace

    Energy Technology Data Exchange (ETDEWEB)

    Coppini, G. [Consiglio Nazionale delle Ricerche, Pisa (Italy). Ist. di Fisiologia Patologica; Valli, G. [Florence Univ., Florence (Italy). Dipt. di Ingegneria Elettronica; Falchini, M.; Stecco, A.; Bindi, A.; Carmignani, L. [Florence Univ., Florence (Italy). Dipt. di Fisiopatologia Clinica, Sezione di Radiodiagnostica

    1999-10-01

    In this report are investigated the capabilities of an artificial neural network-based Computer-Aided Diagnosis (CAD) system in improving early detection of pulmonary nodules on chest radiographs. [Italian] Valutazione di un sistema di riconoscimento automatico basato sulla tecnologia delle reti neruali artificiali per migliorare le possibilita' di rivelazione precoce dei noduli polmonari sul radiogramma toracico.

  3. ROLE OF HR C T IN EARLY DETECTION OF EMPHYSEMA IN SMOKERS WITH NORMAL CHEST RADIOGRAPH

    Directory of Open Access Journals (Sweden)

    Nalamala Baskara

    2015-06-01

    Full Text Available INTRODUCTION : Emphysema is defined by the American Thoracic Society thr ough pathological criteria as "A bnormal permanent enlargement of airspaces distal to terminal bronchioles , accompanied by destruction of their walls and without obvious fibrosis." In the present scenario there is no diagnostic tool to detect the susceptible smoker. Hence a noninvasive tool that can detect the pathologic al changes early will be of immense value to guide the physician to alter the risk factors in asymptomatic patients as emphysema has its roots decades before the onset of symptoms. Recently High Resolution Computed Tomography Scan (HRCT has established it self as a sensitive modality for the detection of early emphysema. MATERIALS AND METHODS : The study group consisted of 32 adult current smokers defined as those who have been smoking five or more cigarettes per day regularly for more than five years. The s tudy group was chosen from attendants/healthy volunteers who attended the outpatient department , Government Fever Hospital , Guntur between January 2014 to march 2015. RESULTS : All the 32 subjects included in the study were males. Overall normal spirometer was observed in all the subjects. 17 (53% out of 32 subjects had CT evidence of emphysema. 5 of these 17 subjects with emphysema showed evidence of air trapping on expiratory scans only with normal inspiratory HRCT scan. 15 subjects (47% had no evidence of emphysema on both inspiratory and expiratory HRCT scans. The incidence of emphysema increased with increasing age and pack years . CONCLUSIONS : The present study concludes that HRCT done in both inspiration and expiration is a good noninvasive modality to detect early emphysema in asymptomatic current smokers there by enabling the physician to implement preventive measures in susceptible subjects. The present study also emphasized the advantage of expiratory scan in detecting emphysema when inspiratory s can is normal. The HRCT of lung is also cost effective and minimizes radiation hazard i f it is done with limited cuts.

  4. Scatter radiation from chest radiographs: is there a risk to infants in a typical NICU?

    Energy Technology Data Exchange (ETDEWEB)

    Trinh, Angela M. [Albert Einstein/Yeshiva University, College of Medicine, Bronx, NY (United States); Schoenfeld, Alan H.; Levin, Terry L. [Montefiore Medical Center, Department of Radiology, Bronx, NY (United States)

    2010-05-15

    To evaluate the dose of scatter radiation to infants in a NICU in order to determine the minimal safe distance between isolettes. Dose secondary to scattered radiation from an acrylic phantom exposed to vertical and horizontal beam exposures at 56 kVp was measured at 93 cm and 125 cm from the center of the phantom. This corresponds to 2 and 3 ft between standard isolettes, respectively. For horizontal exposures, the dosimeter was placed directly behind a CR plate and scatter dose at 90-degrees and 135-degrees from the incident beam was also measured. Exposures were obtained at 160 mAs and the results were extrapolated to correspond to 2.5 mAs. Four measurements were taken at each point and averaged. At 125 cm and 93 cm there was minimal scatter compared to daily natural background radiation dose (8.493 {mu}Gy). Greatest scatter dose obtained from a horizontal beam exposure at 135 from the incident beam was still far below background radiation. Scatter radiation dose from a single exposure as well as cumulative scatter dose from numerous exposures is significantly below natural background radiation. Infants in neighboring isolettes are not at added risk from radiation scatter as long as the isolettes are separated by at least 2 ft. (orig.)

  5. 78 FR 35575 - Black Lung Benefits Act: Standards for Chest Radiographs

    Science.gov (United States)

    2013-06-13

    ... direct that classifications be made in accordance with the International Labour Organization's (ILO... within the meaning of Executive Order 12866, the Office of Management and Budget has not reviewed it... approved for Appendix A to part 718, paragraph (d). (2) (d) International Labour Office, CH-1211 Geneva...

  6. 78 FR 35549 - Black Lung Benefits Act: Standards for Chest Radiographs

    Science.gov (United States)

    2013-06-13

    ... direct that classifications be made in accordance with the International Labour Organization's (ILO... Order 12866, the Office of Management and Budget has not reviewed it prior to publication. C. Unfunded... approved for Appendix A to part 718, paragraph (d). (2) (d) International Labour Office, CH-1211 Geneva...

  7. Digital image processing of mandibular trabeculae on radiographs

    Energy Technology Data Exchange (ETDEWEB)

    Ogino, Toshi

    1987-06-01

    The present study was aimed to reveal the texture patterns of the radiographs of the mandibular trabeculae by digital image processing. The 32 cases of normal subjects and the 13 cases of patients with mandibular diseases of ameloblastoma, primordial cysts, squamous cell carcinoma and odontoma were analyzed by their intra-oral radiographs in the right premolar regions. The radiograms were digitized by the use of a drum scanner densitometry method. The input radiographic images were processed by a histogram equalization method. The result are as follows : First, the histogram equalization method enhances the image contrast of the textures. Second, the output images of the textures for normal mandible-trabeculae radiograms are of network pattern in nature. Third, the output images for the patients are characterized by the non-network pattern and replaced by the patterns of the fabric texture, intertwined plants (karakusa-pattern), scattered small masses and amorphous texture. Thus, these results indicates that the present digital image system is expected to be useful for revealing the texture patterns of the radiographs and in the future for the texture analysis of the clinical radiographs to obtain quantitative diagnostic findings.

  8. SURGICAL CROWN LENGTHENING: A 12-MONTH STUDY - RADIOGRAPHIC RESULTS*

    Science.gov (United States)

    Diniz, Daniela Eleutério; Okuda, Kalizia Marcela; Fonseca, Clarissa Ribeiro; Gonzalez, Marly Kimie Sonohara; Greghi, Sebastião Luiz Aguiar; do Valle, Accácio Lins; Lauris, José Roberto Pereira

    2007-01-01

    Objective The purpose of this study was to perform a radiographic follow-up evaluation after a 12-month healing period, following crown lengthening surgery. Material and methods Twenty-three periodontally healthy subjects (mean age 32.5 years) that required crown lengthening surgery in premolars were recruited. In a total of 30 premolars, full thickness flaps, osseous resection, and flap suturing were performed. The restorative margin was defined in the pre-surgical phase and maintained unaltered during the healing period, serving as a reference point. Standardized bitewing radiographs were taken before and after osseous reduction, and at 2, 3, 6, and 12-month healing periods. Results Intact lamina dura was observed at both mesial and distal alveolar crests only from the 3rd month. At 12-months, all alveolar crests presented lamina dura. The overall mean distance from the restorative margin to the alveolar crest achieved after osseous resection was 3.28±0.87 mm at mesial and 2.81±0.51 mm at distal sites. No significant radiographic changes in the bone crest were observed during a 12-month healing period. Conclusion The findings of this study suggest that the radiographic proximal bone level observed on bitewing radiographs following crown lengthening surgery can be used as a reference to predict the future level of the healed alveolar crest. PMID:19089145

  9. Surgical crown lengthening: a 12-month study - radiographic results

    Directory of Open Access Journals (Sweden)

    Daniela Eleutério Diniz

    2007-08-01

    Full Text Available OBJECTIVE: The purpose of this study was to perform a radiographic follow-up evaluation after a 12-month healing period, following crown lengthening surgery. MATERIAL AND METHODS: Twenty-three periodontally healthy subjects (mean age 32.5 years that required crown lengthening surgery in premolars were recruited. In a total of 30 premolars, full thickness flaps, osseous resection, and flap suturing were performed. The restorative margin was defined in the pre-surgical phase and maintained unaltered during the healing period, serving as a reference point. Standardized bitewing radiographs were taken before and after osseous reduction, and at 2, 3, 6, and 12-month healing periods. RESULTS: Intact lamina dura was observed at both mesial and distal alveolar crests only from the 3rd month. At 12-months, all alveolar crests presented lamina dura. The overall mean distance from the restorative margin to the alveolar crest achieved after osseous resection was 3.28±0.87 mm at mesial and 2.81±0.51 mm at distal sites. No significant radiographic changes in the bone crest were observed during a 12-month healing period. CONCLUSION: The findings of this study suggest that the radiographic proximal bone level observed on bitewing radiographs following crown lengthening surgery can be used as a reference to predict the future level of the healed alveolar crest.

  10. HADES, A Radiographic Simulation Code

    Energy Technology Data Exchange (ETDEWEB)

    Aufderheide, M.B.; Slone, D.M.; Schach von Wittenau, A.E.

    2000-08-18

    We describe features of the HADES radiographic simulation code. We begin with a discussion of why it is useful to simulate transmission radiography. The capabilities of HADES are described, followed by an application of HADES to a dynamic experiment recently performed at the Los Alamos Neutron Science Center. We describe quantitative comparisons between experimental data and HADES simulations using a copper step wedge. We conclude with a short discussion of future work planned for HADES.

  11. A Radiographic Study of Odontoma

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kyung Ho; Choi, Karp Shik [Dept. of Dental Radiology, College of Dentistry, Kyungpook National University, Daegu (Korea, Republic of)

    1998-02-15

    The purpose of this study was to obtain information on the clinical and radiographic features of the odontomas in the jaws. For this study, the authors examined and analyzed the clinical records and radiographs of 119 patients who had lesion of odontoma diagnosed by clinical and radiographic examinations. The obtained results were as follows: 1. Odontoma occurred the most frequently in the 2nd decade (45.4%) and occurred more frequently in males (60.5%) than in females (39.5%). 2. The most common clinical symptom was the delayed eruption of the teeth (34.2%). 3. The type of lesions was mainly observed as compound odontoma (80.8%), and internal pattern of the complex odontoma was unevenly radiopaque (73.9%). 4. The compound odontoma frequently occurred in anterior portion of the maxilla (57.7%) and mandible (30.9%), and complex odontoma frequently occurred in anterior portion of maxilla (34.8%) and posterior portion of mandible (30.5%). 5. The effects on adjacent teeth were impaction of teeth (71.7%) and prolonged retention of deciduous teeth (31.7%). 6. The impaction of the teeth occurred in anterior portion of maxilla (44.2%) amd mandible (19.2%), but root resorption of the adjacent teeth were not seen. 7. The boundary to adjacent structure was well-defined , the lesions appear as radiopaque mass with radiolucent rim.

  12. Technique for chest compressions in adult CPR

    Directory of Open Access Journals (Sweden)

    Rajab Taufiek K

    2011-12-01

    Full Text Available Abstract Chest compressions have saved the lives of countless patients in cardiac arrest as they generate a small but critical amount of blood flow to the heart and brain. This is achieved by direct cardiac massage as well as a thoracic pump mechanism. In order to optimize blood flow excellent chest compression technique is critical. Thus, the quality of the delivered chest compressions is a pivotal determinant of successful resuscitation. If a patient is found unresponsive without a definite pulse or normal breathing then the responder should assume that this patient is in cardiac arrest, activate the emergency response system and immediately start chest compressions. Contra-indications to starting chest compressions include a valid Do Not Attempt Resuscitation Order. Optimal technique for adult chest compressions includes positioning the patient supine, and pushing hard and fast over the center of the chest with the outstretched arms perpendicular to the patient's chest. The rate should be at least 100 compressions per minute and any interruptions should be minimized to achieve a minimum of 60 actually delivered compressions per minute. Aggressive rotation of compressors prevents decline of chest compression quality due to fatigue. Chest compressions are terminated following return of spontaneous circulation. Unconscious patients with normal breathing are placed in the recovery position. If there is no return of spontaneous circulation, then the decision to terminate chest compressions is based on the clinical judgment that the patient's cardiac arrest is unresponsive to treatment. Finally, it is important that family and patients' loved ones who witness chest compressions be treated with consideration and sensitivity.

  13. Anterior chest wall examination reviewed

    Directory of Open Access Journals (Sweden)

    F. Trotta

    2011-09-01

    Full Text Available Anterior chest wall involvement is not infrequently observed within inflammatory arthropaties, particularly if one considers seronegative spondiloarthritides and SAPHO syndrome. Physical examination is unreliable and conventional X-rays analysis is an unsatisfactory tool during diagnostic work-up of this region. Scintigraphic techniques yield informations both on the activity and on the anatomical extent of the disease while computerized tomography visualize the elementary lesions, such as erosions, which characterize the process. Moreover, when available, magnetic resonance imaging couple the ability to finely visualize such lesions with the possibility to show early alterations and to characterize the “activity” of the disease, presenting itself as a powerful tool both for diagnosis and follow-up. This review briefly shows the applications of imaging techniques for the evaluation of the anterior chest wall focusing on what has been done in the SAPHO syndrome which can be considered prototypical for this regional involvement since it is the osteo-articular target mainly affected by the disease.

  14. Subperiosteal osteoid osteoma: radiographic and pathologic manifestations

    Energy Technology Data Exchange (ETDEWEB)

    Shankman, S. [Department of Radiology, Hospital for Joint Diseases/OI, 301 East 17th Street, New York, NY 10003 (United States); Desai, P. [Department of Pathology, Hospital for Joint Diseases/OI, 301 East 17th Street, New York, NY 10003 (United States); Beltran, J. [Department of Radiology, Hospital for Joint Diseases/OI, 301 East 17th Street, New York, NY 10003 (United States)

    1997-08-01

    Objective.To demonstrate the radiologic and pathologic manifestations of osteoid osteoma arising beneath the periosteum, on the surface of the bone. Design. One hundred and sixty osteoid osteomas were seen over a 30-year period. The radiologic, pathologic and operative findings of those that were subperiosteal were reviewed. Patients. Eleven patients with subperiosteal osteoid osteoma were reviewed. The patients ranged in age from 13 to 36 years with a mean of 24 years. Eight were male and three were female. Results and conclusion. Eleven subperiosteal lesions were studied. The reactive periostitis of four lesions was atypical and misleading. Four lesions had features similar to the more common intracortical variety. Three lesions occurring within the joint like other intra-articular lesions were barely seen on plain radiographs. Bone scan and CT scan were virtually diagnostic. The histopathology of these lesions was also atypical though not misleading. In conclusion, subperiosteal osteoid osteoma is a rare lesion with atypical radiographic and histopathologic features. The unusual reactive periostitis seen in several extra-articular cases may suggest other diagnoses. (orig.). With 4 figs., 2 tabs.

  15. Potential of ultrasound in the pediatric chest

    Energy Technology Data Exchange (ETDEWEB)

    Trinavarat, Panruethai, E-mail: pantrinavarat@hotmail.com [Department of Radiology, Faculty of Medicine, Chulalongkorn University, Rama IV Road, Pathumwan, Bangkok 10330 (Thailand); Riccabona, Michael, E-mail: michael.riccabona@klinikum-graz.at [Department of Radiology, Division of Pediatric Radiology, University Hospital Graz (Austria)

    2014-09-15

    Ultrasound (US) of chest, even with inherent limitations of the US beam and air, has been useful in many pediatric chest conditions. It has extended its role and is now widely used by many subspecialists in medicine. This review article will cover techniques, indications, and applications of chest US in neonates, infants and children, including also different common as well as some rare and modern aspects and applications, such as pleural effusion, pneumothorax, pulmonary lesions, mediastinum, diaphragm, and chest wall. Other related imaging modalities are also briefly discussed.

  16. Relevant surgical anatomy of the chest wall.

    Science.gov (United States)

    Naidu, Babu V; Rajesh, Pala B

    2010-11-01

    The chest wall, like other regional anatomy, is a remarkable fusion of form and function. Principal functions are the protection of internal viscera and an expandable cylinder facilitating variable gas flow into the lungs. Knowledge of the anatomy of the whole cylinder (ribs, sternum, vertebra, diaphragm, intercostal spaces, and extrathoracic muscles) is therefore not only important in the local environment of a specific chest wall resection but also in its relation to overall function. An understanding of chest wall kinematics might help define the loss of function after resection and the effects of various chest wall substitutes. Therefore, this article is not an exhaustive anatomic description but a focused summary and discussion.

  17. Potential of ultrasound in the pediatric chest.

    Science.gov (United States)

    Trinavarat, Panruethai; Riccabona, Michael

    2014-09-01

    Ultrasound (US) of chest, even with inherent limitations of the US beam and air, has been useful in many pediatric chest conditions. It has extended its role and is now widely used by many subspecialists in medicine. This review article will cover techniques, indications, and applications of chest US in neonates, infants and children, including also different common as well as some rare and modern aspects and applications, such as pleural effusion, pneumothorax, pulmonary lesions, mediastinum, diaphragm, and chest wall. Other related imaging modalities are also briefly discussed.

  18. Radiographic evaluation of cardiac silhouette in healthy Maine Coon cats

    Directory of Open Access Journals (Sweden)

    Caio Sabino de Oliveira

    2014-09-01

    Full Text Available Determining the size of the heart is important for evaluating cardiac patients, because the increase of the cardiac silhouette in the chest radiography can be indicative of heart disease. The vertebral heart size (VHS method is useful because it allows objective assessment of the limits of cardiac silhouette, and can help assess cardiomegaly and document changes in heart size in response to treatment or disease progression. The aim of this study was to compare VHS values of Maine Coon cats (MCC with values cited in the literature (7.5 ± 0.3 vertebrae obtained in non Maine Coon cats (NMCC. Sixty three MCC underwent the physical examination, electrocardiography, echocardiography, laboratory tests (blood count, biochemistry, including liver and kidney function, and total T4, as well as measurement of blood pressure. Faced with normal results, the cats were positioned in right lateral decubitus (right laterallateral projection, to perform chest radiography. The radiographic examinations were performed using the Fuji computed radiography system. The values of VHS found in the animals of this study were 7.61 ± 0.34 vertebrae with a minimum of 6.9 and of maximum 8.5 vertebrae. Statistical analysis performed by Student’s t test identified a significant difference between the values obtained in this study with those in the literature (p = 0.03 for non Maine Coon cats. The highest values of VHS obtained in MCC may be associated with the size of this giant breed.

  19. Radiographic findings in patients with clinical Tietze syndrom

    Energy Technology Data Exchange (ETDEWEB)

    Jurik, A.G.; Justesen, T.; Graudal, H.

    1987-10-01

    Thirteen patients with similar painful tender swelling in the region of the sternocostal joint (SCJ) are reported. X-ray tomography revealed changes which might explain the swelling in 11 patients. Three patients had anatomical variants of the sternum. One of these and a further two patients had marginal osteophytes at the affected SCJ, as signs of osteoarthrosis. Six patients with psoriasis, pustulosis palmoplantaris, or psoriasis in the family had past or present arthritis of the involved SCJ or the manubriosternal joint. Tomography was found to be a useful confirmatory examination in patients with clinical Tietze syndrome.

  20. Fibromatoses of childhood: the spectrum of radiographic findings.

    Science.gov (United States)

    Patrick, L E; O'Shea, P; Simoneaux, S F; Gay, B B; Atkinson, G O

    1996-01-01

    Fibrous tumor of childhood include several disorders with variable biologic behavior. In the review by Coffin and Dehner [1] of 190 soft-tissue neoplasms in 183 children, 27% were fibroblastic or myofibroblastic in origin. Although nearly all fibrous lesions are benign, they may be locally aggressive. The purpose of this essay is to describe clinical characteristics and to illustrate radiologic features of commonly encountered fibrous lesions of childhood. Familiarity with the presentation and variable appearance may aid the radiologist in suggesting the diagnosis of fibromatosis.

  1. Diagnostic modalities x-ray and CT chest differ in the management of thoracic injury

    Directory of Open Access Journals (Sweden)

    D Chapagain

    2015-06-01

    Full Text Available Objective: To observe difference in the management of blunt trauma to the chest on the basis of conventional xray and computerised tomography of the chest. Methods: This prospective study was conducted between December 2011 to October 2012 in COMS in Bharatpur,a tertiary referral centre in central Nepal . Clinically stable thoracic injury patients were first evaluated with chest x-ray and the management on this basis was recorded. The findings of the CT chest were assessed and the type of management on the basis of CT was also recorded. Outcome was assessed in terms of mortality, morbidity, hospital and ICU stay with respect to the management on the basis of chest x-ray and CT scan. Results: Of the 129 patients, 74.4% were male and 25.6% were female with the patients ranging in age from 7 to 87 years (mean = 40.41 years. The most common mechanism of trauma to the chest was as a result of a motor vehicle accident (69.8%, followed by fall injury (20.2%. X-ray chest diagnosed rib fracture in 62%, haemothorax in 37%, pneumothorax in 27%, lung contusion in 10% and haemopneumothorax in 21% patients. Similarly CT chest diagnosed rib fracture in 86%, haemothorax in 54%, pneumothorax in 36%, lung contusion in 30% and haemopneumothorax in 30% patients. Mean hospital stay was 9.5 days in the group of patients having management on the basis of x-ray chest relative to mean stay of 10.2 days in the CT- chest group. In the management on the basis of xray group, there was a mean ICU stay of 2.8days compared to mean stays of 3.2 days in CT chest group. Conclusion: Though CT scan of the chest is more informative and differs the management of the blunt chest trauma, one should not forget to advise the cost effective, easily available and initial guiding agent, xray chest for early management of the chest injury patient. DOI: http://dx.doi.org/10.3126/jcmsn.v10i1.12764 Journal of College of Medical Sciences-Nepal, 2014, Vol.10(1; 22-31

  2. Evaluation of routine postoperative chest roentgenogram for determination of the correct position of permanent central venous catheters tip

    Directory of Open Access Journals (Sweden)

    Fereshteh Salimi

    2015-01-01

    Full Text Available Background: Proper placement of central venous catheter (CVC tip could reduce early and late catheter-related complications. Although the live fluoroscopy is standard of care for placement of the catheter, it is not available in many centers. Therefore, the present study evaluated the sensitivity and specificity of bedside chest X-ray (CXR for proper positioning of the catheter tip. Materials and Methods: A total of 82 adult patients undergoing elective placement of tunneled CVC were enrolled in this study during 2010-2012. The catheter tip position was evaluated by postoperative bedside chest radiographs as well as trans-thoracic echocardiogram as definite diagnostic tool. The catheter position was considered correct if the tip was positioned in the right atrium both in CXR or echocardiography. Finally, CXRs interpreted by expert radiologist. Thus findings were compared by echocardiography. Sensitivity, specificity, accuracy, positive, and negative predictive values were calculated. Data were analyzed using SPSS version 16 (SPSS Inc., Chicago, IL, and P < 0.05 considered as significant. Results: The patients were 57.37 ± 18.91 years of age, weighed 65.79 ± 15.58 kg and were 166.36 ± 9.91 cm tall. Sensitivity and specificity of CXR for proper catheter tip position were 74.3% and 58.3%, respectively. Positive and negative predictive values were 91.2% and 28%. In addition accuracy, positive likelihood ratio, and negative likelihood ratio were 71.9%, 1.78, and 2.27 respectively. Conclusion: Bedside CXR alone does not reliably predict malpositioning after CVC placement.

  3. Remote interpretation of chest roentgenograms.

    Science.gov (United States)

    Andrus, W S; Hunter, C H; Bird, K T

    1975-04-01

    A series of 98 chest films was interpreted by two physicians on the basis of monitor display of the transmitted television signal representing the roentgenographic image. The transmission path was 14 miles long, and included one active repeater station. Receiver operating characteristic curves were drawn to compare interpretations rendered on television view of the image with classic, direct view interpretations of the same films. Performance in these two viewing modes was found to be quite similar. When films containing only hazy densities lacking internal structure or sharp margins, were removed from the sample, interpretation of the remaining films was essentially identical via the two modes. Since hazy densities are visible on retrospective examination, interpretation of roentgenograms at a distance via television appears to be a feasible route for delivery of radiologic services.

  4. Examination of musculoskeletal chest pain

    DEFF Research Database (Denmark)

    Brunse, Mads Hostrup; Stochkendahl, Mette Jensen; Vach, Werner

    2010-01-01

    using a standardized examination protocol, (2) to determine inter-observer reliability of single components of the protocol, and (3) to determine the effect of observer experience. Eighty patients were recruited from an emergency cardiology department. Patients were eligible if an obvious cardiac or non......-cardiac diagnosis could not be established at the cardiology department. Four observers (two chiropractors and two chiropractic students) performed general health and manual examination of the spine and chest wall. Percentage agreement, Cohen's Kappa and ICC were calculated for observer pairs (chiropractors.......01 to 0.59. Provided adequate training of observers, the examination protocol can be used in carefully selected patients in clinical settings and should be included in pre- and post-graduate clinical training....

  5. Chest pain and exacerbations of bronchiectasis

    Directory of Open Access Journals (Sweden)

    King PT

    2012-12-01

    Full Text Available Paul T King,1,2 Stephen R Holdsworth,2 Michael Farmer,1 Nicholas J Freezer,1 Peter W Holmes11Department of Respiratory and Sleep Medicine, 2Monash University Department of Medicine, Monash Medical Centre, Melbourne, Victoria, AustraliaBackground: Bronchiectasis is a common disease and a major cause of respiratory morbidity. Chest pain has been described as occurring in the context of bronchiectasis but has not been well characterized. This study was performed to describe the characteristics of chest pain in adult bronchiectasis and to define the relationship of this pain to exacerbations.Subjects and methods: We performed a prospective study of 178 patients who were followed-up for 8 years. Subjects were reviewed on a yearly basis and assessed for the presence of chest pain. Subjects who had chest pain at the time of clinical review by the investigators were included in this study. Forty-four patients (25% described respiratory chest pain at the time of assessment; in the majority of cases 39/44 (89%, this occurred with an exacerbation and two distinct types of chest pain could be described: pleuritic (n = 4 and non-pleuritic (n = 37, with two subjects describing both forms. The non-pleuritic chest pain occurred most commonly over both lower lobes and was mild to moderate in severity. The pain subsided as patients recovered. Conclusion: Non-pleuritic chest pain occurs in subjects with bronchiectasis generally in association with exacerbations.Keywords: sputum, collapse, bronchitis, airway obstruction

  6. Assessment of Radiographic Image Quality by Visual Examination of Neutron Radiographs of the Calibration Fuel Pin

    DEFF Research Database (Denmark)

    Domanus, Joseph Czeslaw

    1986-01-01

    Up till now no reliable radiographic image quality standards exist for neutron radiography of nuclear reactor fuel. Under the Euratoro Neutron Radiography Working Group (NRWG) Test Program neutron radiographs were produced at different neutron radiography facilities within the European Community...... of a calibration fuel pin. The radiographs were made by the direct, transfer and tracketch methods using different film recording materials. These neutron radiographs of the calibration fuel pin were used for the assessement of radiographic image quality. This was done by visual examination of the radiographs...

  7. 新生儿床旁X线胸片的临床应用%Clinical application of bedside chest radiography in neonates

    Institute of Scientific and Technical Information of China (English)

    田治海; 高超; 焦振华; 王联营; 张力维; 师勇

    2012-01-01

    complications in MAS, NRDS, ARDS and congenital heart disease were common seen (69 cases,78%). Combined with clinical data, the accurate diagnostic rate of bedside chest radiographs for pneumonia, wet lung, NRDS Ⅰ-Ⅱ , ARDS, MAS, atclcctasis, pulmonary edema, moderate to large pneumothorax and plcural effusion was 80%. 7 cases were misdiagnoscd (5%). The differential diagnosis between pulmonary edema and ARDS, ARDS and MAS combined with NRDS was difficult, which required X-ray findings in combination with clinical follow-up studies. Conclusion Bedside chest X-ray film can meet the need for neonatal critical illness.

  8. Radiographic characterization of the os penis in the cat.

    Science.gov (United States)

    Piola, Valentina; Posch, Barbara; Aghte, Petra; Caine, Abby; Herrtage, Michael E

    2011-01-01

    The os penis in the cat has not been described radiographically, as compared with the dog. However, a small linear bony radiopacity is sometimes detected in the perineal area of male cats. We hypothesized that the feline os penis might be visible on survey radiographs of the pelvis, and we aimed to investigate the frequency of its visualization using analog and computed radiography (CR) system. One hundred radiographs of the pelvis of 99 male cats were reviewed retrospectively (50 were obtained with a CR system and 50 with an analog system). Age, breed, neutering status, and reason for presentation were recorded, as well as the visualization of the os penis. An os penis was detected in 19/50 (38%) cats with CR and in eight of 50 (16%) cats with analog radiography; this difference was statistically significant. With CR, the median age of cats with a visible os penis was significantly higher than in cats where the os penis was not seen. In one cat with a visible os penis examined with CR and analog radiography, the os penis was only visible on CR images. The penile tissues were examined histopathologically in one cat and well-differentiated bone was found but there were no pathologic findings detected in surrounding tissues. Thus, the os penis can be detected on radiographs of cats and this should not be mistaken for a pathologic finding such as urolithiasis or dystrophic mineralization.

  9. Solitary Plasmacytoma of the Chest Wall

    Directory of Open Access Journals (Sweden)

    Servet Kayhan

    2014-03-01

    Full Text Available A previously healthy 55-year-old man with right sided lateral chest pain admitted to clinic. It was found a solid and painful mass at the right 4th rib in physical examination. Chest X-ray and thoracic computarized tomography showed an opacity measured 60x33 mm within the right chest wall destructing the 4th rib. Needle aspiration was performed from tumor and cytologic examination showed atypic plasma cell infiltration. The patient was scheduled for a chest wall resection and reconstructive surgery. Examination of a permanent section showed that the chest wall tumor was solitary plasmacytoma. There was no evidence of multiple myeloma recurrence after two years from the operation.

  10. Computerized Classification of Pneumoconiosis on Digital Chest Radiography Artificial Neural Network with Three Stages.

    Science.gov (United States)

    Okumura, Eiichiro; Kawashita, Ikuo; Ishida, Takayuki

    2017-01-20

    It is difficult for radiologists to classify pneumoconiosis from category 0 to category 3 on chest radiographs. Therefore, we have developed a computer-aided diagnosis (CAD) system based on a three-stage artificial neural network (ANN) method for classification based on four texture features. The image database consists of 36 chest radiographs classified as category 0 to category 3. Regions of interest (ROIs) with a matrix size of 32 × 32 were selected from chest radiographs. We obtained a gray-level histogram, histogram of gray-level difference, gray-level run-length matrix (GLRLM) feature image, and gray-level co-occurrence matrix (GLCOM) feature image in each ROI. For ROI-based classification, the first ANN was trained with each texture feature. Next, the second ANN was trained with output patterns obtained from the first ANN. Finally, we obtained a case-based classification for distinguishing among four categories with the third ANN method. We determined the performance of the third ANN by receiver operating characteristic (ROC) analysis. The areas under the ROC curve (AUC) of the highest category (severe pneumoconiosis) case and the lowest category (early pneumoconiosis) case were 0.89 ± 0.09 and 0.84 ± 0.12, respectively. The three-stage ANN with four texture features showed the highest performance for classification among the four categories. Our CAD system would be useful for assisting radiologists in classification of pneumoconiosis from category 0 to category 3.

  11. A radiographic analysis of implant component misfit.

    LENUS (Irish Health Repository)

    Sharkey, Seamus

    2011-07-01

    Radiographs are commonly used to assess the fit of implant components, but there is no clear agreement on the amount of misfit that can be detected by this method. This study investigated the effect of gap size and the relative angle at which a radiograph was taken on the detection of component misfit. Different types of implant connections (internal or external) and radiographic modalities (film or digital) were assessed.

  12. Prognostic radiographic aspects of spondylolisthesis

    Energy Technology Data Exchange (ETDEWEB)

    Saraste, H.; Brostroem, L.A.; Aparisi, T.

    1984-01-01

    A series of 202 patients (133 men, 69 women) with lumbar spondylolysis were examined radiographically on two occasions, first at the time of diagnosis and later at a follow-up, after an observation period of 20 years or more. The films from patients in groups without and with moderate and severe olisthesis were evaluated with respect to variables describing lumbosacral lordosis, wedging of the spondylolytic vertebra, lengths of the transverse processes and iliolumbar ligaments, disk height, progression of slipping, and influence on measured olisthesis of lumbar spine flexion and extension at the radiographic examination. The evaluation was made with special attention to possible signs which could be predictive for the prognosis of vertebral slipping. Progression of slipping did not differ between patients diagnosed as adults or adolescents. Reduction of disk height was correlated to the degree of slipping present at the initial examination and to the progression of olisthesis. Flexion and extension of the lumbar spine did not modify the degree of olisthesis. Data concerning the lengths of the transverse processes and the iliolumbar ligaments, and lumbar lordosis, cannot be used for prognostic purposes. The lumbar index reflecting the degree of wedge deformity of the spondylolytic vertebra was shown to be the only variable of prognostic value for the development of vertebral slipping.

  13. Multidetector computed tomography-spectrum of blunt chest wall and lung injuries in polytraumatized patients

    Energy Technology Data Exchange (ETDEWEB)

    Peters, S., E-mail: soeren.peters@rub.d [Department of Radiology and Nuclear Medicine, BG Universitaetsklinikum Bergmannsheil, Buerkle-de-la-Camp-Platz 1, 44789 Bochum (Germany); Nicolas, V.; Heyer, C.M. [Department of Radiology and Nuclear Medicine, BG Universitaetsklinikum Bergmannsheil, Buerkle-de-la-Camp-Platz 1, 44789 Bochum (Germany)

    2010-04-15

    Accidental injuries are the leading cause of death in the 15 to 44-year-old age group. Blunt chest trauma is often encountered in these patients and is associated with a mortality of up to 25%. Although conventional radiography still plays an important role in the initial emergency room setting, for follow-up in the intensive care unit, multidetector computed tomography has established itself as the standard imaging method for the evaluation of chest trauma patients. The following review presents salient radiological findings of the chest wall and shoulder girdle, thoracic spine, pleural space, and lung in polytraumatized patients.

  14. Differential points of mediastinal cystic lesion in chest computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Seung Jin; Baek, Jang Mi; Song, Jang Hyeon; Seon, Hyun Ju [Dept. of Radiology, Chonnam National University Hospital, Gwangju (Korea, Republic of); Kim, Yun Hyeon [Dept. of Radiology, Chonnam National University Hwasun Hospital, Hwasun (Korea, Republic of)

    2013-10-15

    To find differential diagnostic imaging findings of mediastinal cystic lesions in chest computed tomography. We retrospectively reviewed imaging findings of 70 patients with histopathologically proven mediastinal cystic lesions. They were 33 male and 37 female patients. Among 70 cases, 49 cases were in the anterior mediastinum, 12 cases were in the middle mediastinum, and 9 cases were in the posterior mediastinum. 19 patients had symptoms. Chest discomfort was the most common symptom. When the cystic lesion was located in the anterior mediastinum, and unilocular, the possibility of thymic cyst was the most likely (p < 0.0027). When the cystic lesion was located in the anterior mediastinum and was multilocular with a relatively thick wall, the possibility of a mature cystic teratoma was the most likely (p < 0.001). When the lesion was a high attenuation cystic lesion located around the air-way, the possibility of a bronchogenic cyst was the most likely (p < 0.001). Chest CT gives information about the location, loculation, wall thickness and internal attenuation of mediastinal cystic lesions. And certain details seen on CT imaging can help with the correct diagnosis, especially in the cases of thymic cyst, mature cystic teratoma and bronchogenic cyst.

  15. Bronchiolitis obliterans following exposure to sulfur mustard: chest high resolution computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Ghanei, Mostafa E-mail: m.ghanei@bmsu.ac.ir; Mokhtari, Majid; Mohammad, Mehdi Mir; Aslani, Jafar

    2004-11-01

    Background: Pulmonary complications are known to occur in over half of the patients exposed to sulfur mustard (SM). Chemical weapons of mass destruction (WMD) including SM were used by Iraq during Iran-Iraq war between 1983 and 1989. We undertook this study to evaluate the chest high resolution computerized tomography (HRCT) as a diagnostic tool in patients with documented exposure to SM and chronic respiratory symptoms. Method: The medical records of 155 patients exposed to SM during Iran-Iraq war and suffered respiratory complications were reviewed. Chest HRCTs of these patients were examined. Ten healthy controls with no history of exposure to HD were matched for age, gender, and chest HRCT protocol applied. Results: Fifty chest HRCTs of these patients were randomly selected for this study. The most frequent findings were; air trapping 38 (76%), bronchiectasis 37 (74%), mosaic parenchymal attenuation (MPA) 36 (72%), irregular and dilated major airways 33 (66%) bronchial wall thickening (BWT) 45 (90%), and interlobular septal wall thickening (SWT) 13 (26%), respectively. Air trapping in one patient (10%) was the only positive finding in the control group. Conclusions: Chest HRCT findings of bronchiectasis, air trapping, MPA, SWT, and BWT were seen in our patients 15 years after exposure to HD. These findings suggest the diagnosis of bronchiolitis obliterans (BO). We did not encounter chest HRCT features consistent with pulmonary fibrosis.

  16. June 2015 imaging case of the month

    Directory of Open Access Journals (Sweden)

    Gotway MB

    2015-06-01

    Full Text Available No abstract available. Article truncated after the first page. Clinical History: A 58-year-old man presented for a pre-operative evaluation for surgery planned for resection of localized prostate malignancy. A frontal chest radiograph (Figure 1 was performed. Which of the following statements regarding the chest radiograph is most accurate? 1. The frontal chest radiograph shows an abnormal mediastinal contour; 2. The frontal chest radiograph shows basal predominant fibrotic abnormalities; 3. The frontal chest radiograph shows large lung volumes with a cystic appearance; 4. The frontal chest radiograph shows multifocal small pulmonary nodules; 5. The frontal chest radiograph shows no abnormal findings ...

  17. [Chest pains in the dental environment].

    Science.gov (United States)

    Garfunkel, A; Galili, D; Findler, M; Zusman, S P; Malamed, S F; Elad, S; Kaufman, E

    2002-01-01

    Chest pain does not necessarily indicate cardiac disease. The most common causes of acute chest pain encountered in dental situations include hyperventilation, pulmonary embolism, angina pectoris and myocardial infarction. Stress and fear often cause rapid breathing or hyperventilation. This usually occurs in young adults and although the hyperventilating patient often complains of chest pain, this is rarely a manifestation of cardiac disease. Pulmonary embolism usually indicates the occlusion of a pulmonary artery causing severe chest pain. The primary clinical manifestation of angina pectoris is chest pain. Although most instances of anginal pain are easily terminated, the dentist must always consider the possibility that the supposed anginal attack is actually a sign of acute myocardial infarction (AMI). AMI is a clinical syndrome caused by a deficient coronary arterial blood supply to a region of myocardium that results in cellular death. There is a high incidence of mortality among AMI with death often occurring within 2 hours of the onset of signs and symptoms. The initial clinical manifestations of all types of chest pain can be similar. Therefore the dentist must develop proficiency in constituting a differential diagnosis and an efficient management protocol. As in most medical situations prevention is the most powerful tool. However, if chest pains do occur, measures such as airway management, oxygen supplementation, coronary artery dilation, analgesis and in extreme cases, cardiopulmonary resuscitation and evacuation to the emergency room, may be necessary.

  18. Chest CT in children: anesthesia and atelectasis

    Energy Technology Data Exchange (ETDEWEB)

    Newman, Beverley; Gawande, Rakhee [Lucile Packard Children' s Hospital, Department of Radiology, Stanford, CA (United States); Krane, Elliot J. [Stanford University School of Medicine, Lucile Packard Children' s Hospital, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford, CA (United States); Holmes, Tyson H. [Stanford University School of Medicine, Lucile Packard Children' s Hospital, Department of Psychiatry and Behavioral Sciences, Stanford, CA (United States); Robinson, Terry E. [Stanford University School of Medicine, Lucile Packard Children' s Hospital, Department of Pulmonary Medicine and Cystic Fibrosis Center for Excellence in Pulmonary Biology, Stanford, CA (United States)

    2014-02-15

    There has been an increasing tendency for anesthesiologists to be responsible for providing sedation or anesthesia during chest CT imaging in young children. Anesthesia-related atelectasis noted on chest CT imaging has proven to be a common and troublesome problem, affecting image quality and diagnostic sensitivity. To evaluate the safety and effectiveness of a standardized anesthesia, lung recruitment, controlled-ventilation technique developed at our institution to prevent atelectasis for chest CT imaging in young children. Fifty-six chest CT scans were obtained in 42 children using a research-based intubation, lung recruitment and controlled-ventilation CT scanning protocol. These studies were compared with 70 non-protocolized chest CT scans under anesthesia taken from 18 of the same children, who were tested at different times, without the specific lung recruitment and controlled-ventilation technique. Two radiology readers scored all inspiratory chest CT scans for overall CT quality and atelectasis. Detailed cardiorespiratory parameters were evaluated at baseline, and during recruitment and inspiratory imaging on 21 controlled-ventilation cases and 8 control cases. Significant differences were noted between groups for both quality and atelectasis scores with optimal scoring demonstrated in the controlled-ventilation cases where 70% were rated very good to excellent quality scans compared with only 24% of non-protocol cases. There was no or minimal atelectasis in 48% of the controlled ventilation cases compared to 51% of non-protocol cases with segmental, multisegmental or lobar atelectasis present. No significant difference in cardiorespiratory parameters was found between controlled ventilation and other chest CT cases and no procedure-related adverse events occurred. Controlled-ventilation infant CT scanning under general anesthesia, utilizing intubation and recruitment maneuvers followed by chest CT scans, appears to be a safe and effective method to obtain

  19. Retrospective evaluation of exposure index (EI) values from plain radiographs reveals important considerations for quality improvement

    Energy Technology Data Exchange (ETDEWEB)

    Mothiram, Ursula; Brennan, Patrick C; Robinson, John; Lewis, Sarah J [Medical Imaging Optimisation and Perception Group (MIOPeG), Discipline of Medical Radiation Sciences, Faculty of Health Science, University of Sydney, Sydney (Australia); Moran, Bernadette [Department of Clinical Medicine, Trinity College Dublin, Dublin (Ireland); Medical Imaging Optimisation and Perception Group (MIOPeG), Discipline of Medical Radiation Sciences, Faculty of Health Science, University of Sydney, Sydney (Australia)

    2013-12-15

    Following X-ray exposure, radiographers receive immediate feedback on detector exposure in the form of the exposure index (EI). To identify whether radiographers are meeting manufacturer-recommended EI (MREI) ranges for routine chest, abdomen and pelvis X-ray examinations under a variety of conditions and to examine factors affecting the EI. Data on 5000 adult X-ray examinations including the following variables were collected: examination parameters, EI values, patient gender, date of birth, date and time of examination, grid usage and the presence of implant or prosthesis. Descriptive statistics were used to summarize each data set and the Mann–Whitney U test was used to determine significant differences, with P < 0.05 indicating significance for all tests. Most examinations demonstrated EI values that were outside the MREI ranges, with significantly higher median EI values recorded for female patient radiographs than those for male patients for all manufacturers, indicating higher detector exposures for all units except for Philips digital radiography (DR), where increased EI values indicate lower exposure (P = 0.01). Median EI values for out of hours radiography were also significantly higher compared with normal working hours for all technologies (P ≤ 0.02). Significantly higher median EI values were demonstrated for Philips DR chest X-rays without as compared to those with the employment of a grid (P = 0.03), while significantly lower median EI values were recorded for Carestream Health computed radiography (CR) chest X-rays when an implant or prosthesis was present (P = 0.02). Non-adherence to MREIs has been demonstrated with EI value discrepancies being dependent on patient gender, time/day of exposure, grid usage and the presence of an implant or prosthesis. Retrospective evaluation of EI databases is a valuable tool to assess the need of quality improvement in routine DR.

  20. Factors Associated with Complications in Older Adults with Isolated Blunt Chest Trauma

    Directory of Open Access Journals (Sweden)

    Lotfipour, Shahram

    2009-05-01

    Full Text Available OBJECTIVE: To determine the prevalence of adverse events in elderly trauma patients with isolated blunt thoracic trauma, and to identify variables associated with these adverse events.METHODS: We performed a chart review of 160 trauma patients age 65 and older with significant blunt thoracic trauma, drawn from an American College of Surgeons Level I Trauma Center registry. Patients with serious injury to other body areas were excluded to prevent confounding the cause of adverse events. Adverse events were defined as acute respiratory distress syndrome or pneumonia, unanticipated intubation, transfer to the intensive care unit for hypoxemia, or death. Data collected included history, physical examination, radiographic findings, length of hospital stay, and clinical outcomes.RESULTS: Ninety-nine patients had isolated chest injury, while 61 others had other organ systems injured and were excluded. Sixteen patients developed adverse events [16.2% 95% confidence interval (CI 9.5-24.9%], including two deaths. Adverse events were experienced by 19.2%, 6.1%, and 28.6% of those patients 65-74, 75-84, and >/=85 years old, respectively. The mean length of stay was 14.6 days in patients with an adverse event and 5.8 days in patients without. Post hoc analysis revealed that all 16 patients with an adverse event had one or more of the following: age >/=85, initial systolic blood pressure <90 mmHg, hemothorax, pneumothorax, three or more unilateral rib fractures, or pulmonary contusion (sensitivity 100%, CI 79.4-100%; specificity 38.6%, CI 28.1-49.9%.CONCLUSION: Adverse events from isolated thoracic trauma in elderly patients complicate 16% of our sample. These criteria were 100% sensitive and 38.5% specific for these adverse events. This study is a first step to identifying variables that might aid in identifying patients at high risk for serious adverse events.

  1. Chest pain: a time for concern?

    Science.gov (United States)

    King, Joan E; Magdic, Kathy S

    2014-01-01

    When a patient complains of chest pain, the first priority is to establish whether the situation is life threatening. Life-threatening differential diagnoses that clinicians must consider include acute coronary syndrome, cardiac tamponade, pulmonary embolus, aortic dissection, and tension pneumothorax. Nonthreatening causes of chest pain that should be considered include spontaneous pneumothorax, pleural effusion, pneumonia, valvular diseases, gastric reflux, and costochondritis. The challenge for clinicians is not to be limited by "satisfaction of search" and fail to consider important differential diagnoses. The challenge, however, can be met by developing a systematic method to assess chest pain that will lead to the appropriate diagnosis and appropriate treatment plan.

  2. Chest pain of cardiac and noncardiac origin.

    Science.gov (United States)

    Lenfant, Claude

    2010-10-01

    Chest pain is one of the most common symptoms driving patients to a physician's office or the hospital's emergency department. In approximately half of the cases, chest pain is of cardiac origin, either ischemic cardiac or nonischemic cardiac disease. The other half is due to noncardiac causes, primarily esophageal disorder. Pain from either origin may occur in the same patient. In addition, psychological and psychiatric factors play a significant role in the perception and severity of the chest pain, irrespective of its cause. Chest pain of ischemic cardiac disease is called angina pectoris. Stable angina may be the prelude of ischemic cardiac disease; and for this reason, it is essential to ensure a correct diagnosis. In most cases, further testing, such as exercise testing and angiography, should be considered. The more severe form of chest pain, unstable angina, also requires a firm diagnosis because it indicates severe coronary disease and is the earliest manifestation of acute myocardial infarction. Once a diagnosis of stable or unstable angina is established, and if a decision is made not to use invasive therapy, such as coronary bypass, percutaneous transluminal coronary angioplasty, or stent insertion, effective medical treatment of associated cardiac risk factors is a must. Acute myocardial infarction occurring after a diagnosis of angina greatly increases the risk of subsequent death. Chest pain in women warrants added attention because women underestimate their likelihood to have coronary heart disease. A factor that complicates the clinical assessment of patients with chest pain (both cardiac and noncardiac in origin) is the relatively common presence of psychological and psychiatric conditions such as depression or panic disorder. These factors have been found to cause or worsen chest pain; but unfortunately, they may not be easily detected. Noncardiac chest pain represents the remaining half of all cases of chest pain. Although there are a number of

  3. Tumor odontogénico queratoquístico: Hallazgo radiográfico y resolución quirúrgica de un caso clínico Keratocystic odontogenic tumor: Radiographic findings and surgical management of a clinical case

    Directory of Open Access Journals (Sweden)

    J. Vázquez Diego

    2012-10-01

    Full Text Available Se presenta un caso clínico de queratoquiste odontogénico. El paciente de 26 años de edad es de sexo femenino. Se utilizan las técnicas radiológicas intrabucales y extrabucales para localizar y diagnosticar presuntivamente dicha patología. Posteriormente se realiza la biopsia que corrobora el diagnóstico presuntivo y se realizó intervención quirúrgica en la que se lleva a cabo la enucleación del tumor. Se realizaron los controles periódicos a corto, mediano y largo plazo en el que no se constató ninguna recidiva de la lesión. Basado en lo expuesto se analiza al tumor odontogénico queratoquístico según ubicación, sexo, edad y maxilar; habiendo realizado una revisión de la literatura.We present a clinical case of odontogenic keratocyst in a 26-year-old female patient. Both extraroal and intraoral radiographic techniques were used with the purpose of locating and attempt a presumptive diagnosis of this pathology. A biopsy was performed, confirming our earlier diagnostic presumption and then, surgical intervention was carried out, with the complete enucleation of the tumor. Short-, mid- and long-term controls were also performed, not showing any signs of a possible recurrence of the lesion. Based on our findings, we study the keratocystic odontogenic tumor according to location, gender, age and jaw affected, after reviewing the current literature on this issue.

  4. Radiographic study of the odontoma

    Energy Technology Data Exchange (ETDEWEB)

    Ahn, Hyung Kyu [Department of Oral Radiology, College of Dentistry, Seoul National University, Seoul (Korea, Republic of)

    1983-11-15

    The author studied clinically and radiologically 55 cases which had been diagnosed as odontoma in SNUDH. The obtained results were as follows: 1. In sex distribution, there was no prevalence in both sexes. And the incidence was the highest in the 2nd decade (16 patient, 29%). 2. There were 42 cases of compound odontoma (76%) and 13 cases of complex odontoma (24%). In most cases, compound odontoma was located at the anterior portion (34 cases, 81%) and complex odontoma at the posterior portions (9 cases, 69%). 3. There was no apparent clinical symptom in compound odontoma (83%), but in complex odontoma, 80% of cases show swelling. 4. The adjacent root resorption was not observed in any case. 5. Five cases radiographically diagnosed as cystic odontoma were not confirmed histopathologically.

  5. Thrombophlebitis of the lateral chest wall (Mondor′s disease

    Directory of Open Access Journals (Sweden)

    D Crisan

    2014-01-01

    Full Text Available Mondor′s disease is a rare condition, which involves the thrombophlebitis of the superficial veins of the breast and anterior chest wall. A 37-year-old woman presented with sudden onset of local pain and edema on her right chest wall, accompanied by a longitudinal retraction of the skin during arm abduction in the area. Clinical, histological and ultrasonographic findings confirmed Mondor′s disease and the treatment was symptomatic, using pain relievers and warm compresses. The symptomatology remitted within 2 weeks of therapy. Mondor′s disease is a rare condition where ultrasound complements the clinical evaluation and allows the characterization of certain abnormalities, which correlated with functional biochemical data and other procedures may substitute the need of biopsy.

  6. Radiographic arthrosis after elbow trauma: interobserver reliability.

    NARCIS (Netherlands)

    Lindenhovius, A.; Karanicolas, P.J.; Bhandari, M.; Ring, D.; Kampen, A. van

    2012-01-01

    PURPOSE: This study measured observer variation in radiographic rating of elbow arthrosis. METHODS: Thirty-seven independent orthopedic surgeons graded the extent of elbow arthrosis in 20 consecutive sets of plain radiographs, according to the Broberg and Morrey rating system (grade 0, normal joint;

  7. Automatic cobb angle determination from radiographic images

    NARCIS (Netherlands)

    Sardjono, Tri Arief; Wilkinson, Michael H.F.; Veldhuizen, Albert G.; Ooijen, van Peter M.A.; Purnama, Ketut E.; Verkerke, Gijsbertus J.

    2013-01-01

    Study Design. Automatic measurement of Cobb angle in patients with scoliosis. Objective. To test the accuracy of an automatic Cobb angle determination method from frontal radiographical images. Summary of Background Data. Thirty-six frontal radiographical images of patients with scoliosis. Met

  8. Automatic Cobb Angle Determination From Radiographic Images

    NARCIS (Netherlands)

    Sardjono, Tri Arief; Wilkinson, Michael H. F.; Veldhuizen, Albert G.; van Ooijen, Peter M. A.; Purnama, Ketut E.; Verkerke, Gijsbertus J.

    2013-01-01

    Study Design. Automatic measurement of Cobb angle in patients with scoliosis. Objective. To test the accuracy of an automatic Cobb angle determination method from frontal radiographical images. Summary of Background Data. Thirty-six frontal radiographical images of patients with scoliosis. Methods.

  9. Radiographic simulations and analysis for ASCI

    Energy Technology Data Exchange (ETDEWEB)

    Aufderheide, M.; Stone, D.; VonWittenau, A.

    1998-12-18

    In this paper, the authors describe their work on developing quantitatively accurate radiographic simulation and analysis tools for ASCI hydro codes. they have extended the ability of HADES, the code which simulates radiography through a mesh, to treat the complex meshes used in ASCI calculations. The ultimate goal is to allow direct comparison between experimental radiographs and full physics simulated radiographs of ASCI calculations. They describe the ray-tracing algorithm they have developed for fast, accurate simulation of dynamic radiographs with the meshes used in ALE3D, an LLNL ASCI code. Spectral effects and material compositions are included. In addition to the newness of the mesh types, the distributed nature of domain decomposed problems requires special treatment by the radiographic code. Because of the size of such problems, they have parallelized the radiographic simulation, in order to have quick turnaround time. presently, this is done using the domain decomposition from the hydro code. They demonstrate good parallel scaling as the size of the problem is increased. They show a comparison between an experimental radiograph of a high explosive detonation and a simulated radiograph of an ALE3D calculation. They conclude with a discussion of future work.

  10. Do we really need radiographic assessment for the diagnosis of non-specific heel pain (calcaneal apophysitis) in children?

    Energy Technology Data Exchange (ETDEWEB)

    Kose, Ozkan [Diyarbakir Education and Research Hospital, Orthopaedics and Traumatology Clinic, Diyarbakir (Turkey); Diclekent Bulvari, Ataslar Serhat Evleri, Diyarbakir (Turkey)

    2010-04-15

    Non-specific heel pain (calcaneal apophysitis) is a common disorder, particularly in physically active growing children. Foot radiographs are usually obtained as part of the clinical evaluation in routine orthopaedic practice. However, there is still controversy about the specific findings on radiographs, and it is unclear what information is present on radiographs that may alter the diagnosis and management. The purpose of this study was to review a consecutive series of patients with the diagnosis of calcaneal apophysitis to assess the yield of routine radiographs of the foot. A prospective study was performed on 61 consecutive patients with a diagnosis of calcaneal apophysitis in a single-surgeon practice. Standard anteroposterior and lateral weight-bearing foot radiographs were obtained for each patient. Seventy-one sets of foot radiographs were reviewed to determine whether radiographs had an impact on diagnosis and management. Patients with antecedent trauma, penetrating injury, foot deformity, achilles tendonitis, bursitis and infections were excluded from the study. Seventy foot radiographs were considered to be normal. The radiographs changed the diagnosis in only one patient, in whom a simple bone cyst of the calcaneous was seen. Calcaneal apophysitis is a self-limiting disease, and patients can be treated conservatively. Neither the sclerosis nor the fragmentation of the apophysis could be used to establish the diagnosis of calcaneal apophysitis. Therefore, obtaining radiographs as an initial step in their evaluation does not seem to be justified. (orig.)

  11. Common Acupoints in Chest and Abdomen

    Institute of Scientific and Technical Information of China (English)

    Journal of Acupuncture and Tuina Science Editor; CUI Xue-jun

    2003-01-01

    @@ Tiantu (CV 21) Location: In the center of the suprasternal fossa(Fig. l ). Indications: Cough, dyspnea, chest pain, pharyngolaryngeal swelling and pains, sudden hoarseness of the voice, goiter, globus hystericus, and dysphagia.

  12. Tuberculosis, advanced - chest x-rays (image)

    Science.gov (United States)

    Tuberculosis is an infectious disease that causes inflammation, the formation of tubercules and other growths within tissue, ... death. These chest x-rays show advanced pulmonary tuberculosis. There are multiple light areas (opacities) of varying ...

  13. Image quality for five modern chest radiography techniques: a modified FROC study with an anthropomorphic chest phantom.

    Science.gov (United States)

    Månsson, L G; Kheddache, S; Lanhede, B; Tylén, U

    1999-01-01

    The purpose of the study was to compare the image quality for one conventional and four digital chest radiography techniques. Three storage phosphor systems, one selenium drum system, and one film-screen system were compared using a modified receiver-operating-characteristics method. Simulated pathology was randomly positioned over the parenchymal regions and the mediastinum of an anthropomorphic phantom. Eight observers (four chest radiologists, one specialist in general radiology, one hospital physicist, and two radiographers) evaluated 60 images for each technique. The selenium drum system (Philips, Eindhoven, The Netherlands) rated best for the detection of parenchymal nodules. Together with the storage phosphor system of generation IIIN (Philips/Fuji), the selenium drum system also rated best for detection of thin linear structures. The storage phosphor system of generation V (Fuji) rated best for the detection of mediastinal nodules. The first generation of the storage phosphor system from Agfa (Mortsel, Belgium) rated worst for the detection of parenchymal nodules and thin linear structures. These differences were significant (p drum system and the storage phosphor system of generation V were significantly better than the other systems tested. The film/screen system performed significantly better than the first-generation storage phosphor system from Agfa, equal to the generation IIIN storage phosphor system (Philips/Fuji) and significantly worse than the selenium drum system (Philips) and the generation-V storage phosphor system (Fuji). The conclusion is therefore that the image quality of selenium-based digital technique and of the more recent generations of storage phosphor systems is superior to both conventional technique and storage phosphor systems using image plates of older types.

  14. Diabetic Mastopathy as a Radiographically Occult Palpable Breast Mass

    OpenAIRE

    Uma Thanarajasingam; Beiyun Chen; Tortorelli, Cindy L.; Jakub, James W.; Karthik Ghosh

    2011-01-01

    Diabetic mastopathy is an uncommon, benign disease of the breast that can occur in women with diabetes and clinically mimic breast cancer. We describe a patient with long-standing type 1 diabetes who presented with a palpable breast mass with negative imaging findings on mammography, ultrasonography, and breast MRI. Surgical biopsy and histopathology confirmed diabetic mastopathy. We use this case to highlight the recognition, radiographic features, pathology, and management of this benign br...

  15. CARDIOVASCULAR DISORDERS IN ADOLESCENTS WITH CHEST PAIN

    OpenAIRE

    Sri Endah Rahayuningsih; Rahmat Budi; Herry Garna

    2014-01-01

    Objective: To detect cardiovascular abnormalities in adolescents with chest pain. Methods: In this cross sectional study, the subjects were 25 adolescents with chest pain who came to the Cardiac Center of Dr. Hasan Sadikin General Hospital, Bandung during the period of January 2008 to January 2011. The presence of established cardiovascular disorders were based on history, physical examination, electrocardiography and echocardiography Results: It was found that 13/25 adolesce...

  16. Relevant surgical anatomy of the chest wall

    OpenAIRE

    Rajesh, Pala Babu; Naidu, Babu V.

    2010-01-01

    The chest wall, like other regional anatomy, is a remarkable fusion of form and function. Principal functions are the protection of internal viscera and an expandable cylinder facilitating variable gas flow into the lungs. Knowledge of the anatomy of the whole cylinder (ribs, sternum, vertebra, diaphragm, intercostal spaces, and extrathoracic muscles) is therefore not only important in the local environment of a specific chest wall resection but also in its relation to overall function. An un...

  17. Tuberculous spondylitis presenting as severe chest pain

    Directory of Open Access Journals (Sweden)

    Martha A. Kaeser

    2012-04-01

    Full Text Available This case report describes a 32-year-old male who presented to an emergency department with severe chest pain and a history of cough, fever, night sweats, loss of appetite and weight. Chest radiography revealed a left upper lobe consolidation and multiple compression deformities in the thoracic spine. Magnetic resonance imaging demonstrated significant kyphosis and vertebral plana at two thoracic levels. Anterior compression of the spinal cord and adjacent soft tissue masses were also noted.

  18. Relationship between chest pain severity and physiological indexes in patients with coronary artery disease

    Directory of Open Access Journals (Sweden)

    Ali Fakhr-Movahedi

    2016-05-01

    Full Text Available Background: Coronary artery disease is considered as main factor for patients’ hospitalization. Chest pain is the most common symptoms of patients and its assessment is an important factor in coronary artery disease. So, this study aimed to determine the relationship between the severity of chest pain with physiological indexes in patients with coronary artery disease. Methods: This study was a descriptive-analytical design that performed on 80 patients with that were hospitalized in coronary care unit of Shahid Mofatteh Hospital in Varamin city, Iran, from March to September, 2014. In this study, the relationship between the chest pain severity and blood pressure, pulse rate, respiratory rate, O2 saturation and ST segment alterations were assessed. Finally, the gathered data were analyzed by descriptive and inferential statistics. Results: The mean of chest pain severity was 6.51±2.14 in patients. Patients’ age was between 26 to 85 years old and the mean of age was 60.79±13.79 and there was no significant correlation between age and chest pain severity (P=0.985. Also male and female patients were equal. There was no significant difference between chest pain severity of men and women (P=0.471. The findings of study showed no correlation between chest pain severity and heart rate (r=-0.174 and P=0.122, respiratory rate (r=-0.013 and P=0.909, O2 saturation (r=0.051 and P=0.651, ST segment alterations (r=0.07 and P=0.539. Also, there was no significant difference between chest pain severity and systolic pressure (P=0.353, diastolic blood pressure (P=0.312 and body mass index (P=0.256 among patients. Conclusion: In this study, there were not enough evidences for relation between chest pain and physiological indexes in patients with coronary artery disease. So performing more studies in another settings and conditions recommended.

  19. Imaging findings of sternal abnormalities

    Energy Technology Data Exchange (ETDEWEB)

    Franquet, T. [Dept. of Radiology, Hospital de Sant Pau, Universidad Autonoma de Barcelona (Spain); Gimenez, A. [Dept. of Radiology, Hospital de Sant Pau, Universidad Autonoma de Barcelona (Spain); Alegret, X. [Dept. of Radiology, Hospital de Sant Pau, Universidad Autonoma de Barcelona (Spain); Sanchis, E. [Dept. of Radiology, Hospital de Sant Pau, Universidad Autonoma de Barcelona (Spain); Rivas, A. [Dept. of Radiology, Hospital Vall d`Hebron, Universidad Autonoma de Barcelona (Spain)

    1997-05-01

    Radiographic findings in the sternal abnormalities are often nonspecific, showing appearances from a localized benign lesion to an aggressive lesion as seen with infections and malignant neoplasms. A specific diagnosis of sternal abnormalities can be suggested on the basis of CT and MR characteristics. Familiarity with the presentation and variable appearance of sternal abnormalities may aid the radiologist is suggesting a specific diagnosis. We present among others characteristic radiographic findings of hemangioma, chondrosarcoma, hydatid disease, and SAPHO syndrome. In those cases in which findings are not specific, cross-sectional imaging modalities may help the clinician in their management. (orig.)

  20. Estimated Probabililty of Chest Injury During an International Space Station Mission

    Science.gov (United States)

    Lewandowski, Beth E.; Milo, Eric A.; Brooker, John E.; Weaver, Aaron S.; Myers, Jerry G., Jr.

    2013-01-01

    The Integrated Medical Model (IMM) is a decision support tool that is useful to spaceflight mission planners and medical system designers when assessing risks and optimizing medical systems. The IMM project maintains a database of medical conditions that could occur during a spaceflight. The IMM project is in the process of assigning an incidence rate, the associated functional impairment, and a best and a worst case end state for each condition. The purpose of this work was to develop the IMM Chest Injury Module (CIM). The CIM calculates the incidence rate of chest injury per person-year of spaceflight on the International Space Station (ISS). The CIM was built so that the probability of chest injury during one year on ISS could be predicted. These results will be incorporated into the IMM Chest Injury Clinical Finding Form and used within the parent IMM model.

  1. Psychiatric syndromes associated with atypical chest pain

    Directory of Open Access Journals (Sweden)

    Nikolić Gordana

    2010-01-01

    Full Text Available Background/Aim. Chest pain often indicates coronary disease, but in 25% of patients there is no evidence of ischemic heart disease using standard diagnostic tests. Beside that, cardiologic examinations are repeated several times for months. If other medical causes could not be found, there is a possibility that chest pain is a symptom of psychiatric disorder. The aim of this study was to determine the presence of psychiatric syndromes, increased somatization, anxiety, stress life events exposure and characteristic of chest pain expression in persons with atypical chest pain and coronary patients, as well as to define predictive parameters for atypical chest pain. Method. We compared 30 patients with atypical chest pain (E group to 30 coronary patients (K group, after cardiological and psychiatric evaluation. We have applied: Mini International Neuropsychiatric Interview (MINI, The Symptom Checklist 90-R (SCL-90 R, Beck Anxiety Inventory (BAI, Holms-Rahe Scale of stress life events (H-R, Questionnaire for pain expression Pain-O-Meter (POM. Significant differences between groups and predictive value of the parameters for atypical chest pain were determined. Results. The E group participants compared to the group K were younger (33.4 ± 5.4 : 48.3 ± 6,4 years, p < 0.001, had a moderate anxiety level (20.4 ± 11.9 : 9.6 ± 3.8, p < 0.001, panic and somatiform disorders were present in the half of the E group, as well as eleveted somatization score (SOM ≥ 63 -50% : 10%, p < 0.01 and a higher H-R score level (102.0 ± 52.2 : 46.5 ± 55.0, p < 0.001. Pain was mild, accompanied with panic. The half of the E group subjects had somatoform and panic disorders. Conclusion. Somatoform and panic disorders are associated with atypical chest pain. Pain expression is mild, accompained with panic. Predictive factors for atypical chest pain are: age under 40, anxiety level > 20, somatization ≥ 63, presence of panic and somatoform disorders, H-R score > 102

  2. An artificial neural network for estimating scatter exposures in portable chest radiography.

    Science.gov (United States)

    Lo, J Y; Floyd, C E; Baker, J A; Ravin, C E

    1993-01-01

    An adaptive linear element (Adaline) was developed to estimate the two-dimensional scatter exposure distribution in digital portable chest radiographs (DPCXR). DPCXRs and quantitative scatter exposure measurements at 64 locations throughout the chest were acquired for ten radiographically normal patients. The Adaline is an artificial neural network which has only a single node and linear thresholding. The Adaline was trained using DPCXR-scatter measurement pairs from five patients. The spatially invariant network would take a portion of the image as its input and estimate the scatter content as output. The trained network was applied to the other five images, and errors were evaluated between estimated and measured scatter values. Performance was compared against a convolution scatter estimation algorithm. The network was evaluated as a function of network size, initial values, and duration of training. Network performance was evaluated qualitatively by the correlation of network weights to physical models, and quantitatively by training and evaluation errors. Using DPCXRs as input, the network learned to describe known scatter exposures accurately (7% error) and estimate scatter in new images (< 8% error) slightly better than convolution methods. Regardless of size and initial shape, all networks adapted into radial exponentials with magnitude of 0.75, perhaps implying an ideal point spread function and average scatter fraction, respectively. To implement scatter compensation, the two-dimensional scatter distribution estimated by the neural network is subtracted from the original DPCXR.

  3. Radiographic markers - A reservoir for bacteria?

    Energy Technology Data Exchange (ETDEWEB)

    Tugwell, Jenna, E-mail: jenna.tugwell@googlemail.co [Department of Radiology, Ysbyty Gwynedd Hospital, Bangor, North Wales (United Kingdom); Maddison, Adele [Nuffield Health, Shrewsbury Hospital (United Kingdom)

    2011-05-15

    Introduction: Amongst the most frequently handled objects in the radiology department are radiographic markers. They are personal accessories used with every patient, and are kept in the radiographers pockets when not utilised. Upon enquiry it was discovered that many radiographers disregarded the potential of these accessories to become a vector for cross-contamination thus never or rarely clean them. The aims of this study were therefore to identify if radiographic markers are a reservoir for bacteria and to establish an effective cleaning method for decontaminating them. Methodology: 25 radiographers/student radiographers were selected for this study. Swabbing of their markers prior and post cleaning took place. The microbiology laboratory subsequently analyzed the results by quantifying and identifying the bacteria present. The participants also completed a closed questionnaire regarding their markers (e.g. frequency of cleaning and type of marker) to help specify the results gained from the swabbing procedure. Results: From the sample swabbed, 92% were contaminated with various organisms including Staphylococcus and Bacillus species, the amount of bacteria present ranged from 0 to >50 CFU. There were no significant differences between disinfectant wipes and alcohol gel in decontaminating the markers. Both successfully reduced their bacterial load, with 80% of the markers post cleaning having 0 CFU. Conclusion: The results indicated that radiographic markers can become highly contaminated with various organisms thus serve as a reservoir for bacteria. In addition, the markers need to be cleaned on a regular basis, with either disinfectant wipes or alcohol gel to reduce their bacterial load.

  4. Agreement between radiographic and photographic trabecular patterns

    Energy Technology Data Exchange (ETDEWEB)

    Korstjens, C.M.; Geraets, W.G.M.; Stelt, P.F. van der [Dept. of Oral Radiology, Academic Centre for Dentistry, Amsterdam (Netherlands); Spruijt, R.J. [Div. of Psychosocial Research and Epidemiology, Netherlands Cancer Inst., Amsterdam (Netherlands); Mosekilde, L. [Dept. of Cell Biology, Univ. of Aarhus (Denmark)

    1998-11-01

    Purpose: It has been hypothesized that photographs can facilitate the interpretation of the radiographic characteristics of trabecular bone. The reliability of these photographic and radiographic approaches has been determined, as have various agreements between the two approaches and their correlations with biomechanical characteristics. Material and Methods: Fourteen vertebral bodies were obtained at autopsy from 6 women and 8 men aged 22-76 years. Photographs (n=28) and radiographs (n=28) were taken of midsagittal slices from the third lumbar vertebra. The radiographs and photographs were digitized and the geometric properties of the trabecular architecture were then determined with a digital images analysis technique. Information on the compressive strength and ash density of the vertebral body was also available. Results: The geometric properties of both radiographs and photographs could be measured with a high degree of reliability (Cronbach`s {alpha}>0.85). Agreement between the radiographic and photographic approaches was mediocre as only the radiographic measurements showed insignificant correlations (p<0.05) with the biomechanical characteristics. We suggest that optical phenomena may result in the significant correlations between the photographs and the biomechanical characteristics. Conclusion: For digital image processing, radiography offers a superior description of the architecture of trabecular bone to that offered by photography. (orig.)

  5. Zebrafish Caudal Haematopoietic Embryonic Stromal Tissue (CHEST) Cells Support Haematopoiesis

    Science.gov (United States)

    Wolf, Anja; Aggio, Julian; Campbell, Clyde; Wright, Francis; Marquez, Gabriel; Traver, David; Stachura, David L.

    2017-01-01

    Haematopoiesis is an essential process in early vertebrate development that occurs in different distinct spatial locations in the embryo that shift over time. These different sites have distinct functions: in some anatomical locations specific hematopoietic stem and progenitor cells (HSPCs) are generated de novo. In others, HSPCs expand. HSPCs differentiate and renew in other locations, ensuring homeostatic maintenance. These niches primarily control haematopoiesis through a combination of cell-to-cell signalling and cytokine secretion that elicit unique biological effects in progenitors. To understand the molecular signals generated by these niches, we report the generation of caudal hematopoietic embryonic stromal tissue (CHEST) cells from 72-hours post fertilization (hpf) caudal hematopoietic tissue (CHT), the site of embryonic HSPC expansion in fish. CHEST cells are a primary cell line with perivascular endothelial properties that expand hematopoietic cells in vitro. Morphological and transcript analysis of these cultures indicates lymphoid, myeloid, and erythroid differentiation, indicating that CHEST cells are a useful tool for identifying molecular signals critical for HSPC proliferation and differentiation in the zebrafish. These findings permit comparison with other temporally and spatially distinct haematopoietic-supportive zebrafish niches, as well as with mammalian haematopoietic-supportive cells to further the understanding of the evolution of the vertebrate hematopoietic system. PMID:28300168

  6. Evaluation of entrance surface air kerma in pediatric chest radiography

    Science.gov (United States)

    Porto, L.; Lunelli, N.; Paschuk, S.; Oliveira, A.; Ferreira, J. L.; Schelin, H.; Miguel, C.; Denyak, V.; Kmiecik, C.; Tilly, J.; Khoury, H.

    2014-11-01

    The objective of this study was to evaluate the entrance surface air kerma in pediatric chest radiography. An evaluation of 301 radiographical examinations in anterior-posterior (AP) and posterior-anterior (PA) (166 examinations) and lateral (LAT) (135 examinations) projections was performed. The analyses were performed on patients grouped by age; the groups included ages 0-1 y, 1-5 y, 5-10 y, and 10-15 y. The entrance surface air kerma was determined with DoseCal software (Radiological Protection Center of Saint George's Hospital, London) and thermoluminescent dosimeters. Two different exposure techniques were compared. The doses received by patients who had undergone LAT examinations were 40% higher, on average, those in AP/PA examinations because of the difference in tube voltage. A large high-dose “tail” was observed for children up to 5 y old. An increase in tube potential and corresponding decrease in current lead to a significant dose reduction. The difference between the average dose values for different age ranges was not practically observed, implying that the exposure techniques are still not optimal. Exposure doses received using the higher tube voltage and lower current-time product correspond to the international diagnostic reference levels.

  7. Coincidence of calcified carotid atheromatous plaque, osteoporosis, and periodontal bone loss in dental panoramic radiographs

    OpenAIRE

    Ramesh, Aruna; Soroushian, Sheila; Ganguly, Rumpa

    2013-01-01

    Purpose This study was performed to assess the correlation of calcified carotid atheromatous plaque (CCAP), the mandibular cortical index, and periodontal bone loss in panoramic radiographs. Materials and Methods One hundred eighty-five panoramic radiographs with CCAP and 234 without this finding were evaluated by 3 observers for the presence of osseous changes related to osteoporosis and periodontal bone loss. Chi-squared and Mann-Whitney U tests were used to compare the two groups for an as...

  8. MRI findings of miliary tuberculosis of the brain

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Chang Lak; Song, Chang June; Ahn, Young Jun; Youn, Wan Gyu; Jung, Youn Sin; Cho, June Sik [Chungnam National Univ. College of Medicine, Taejon (Korea, Republic of)

    1996-07-01

    To evaluate MRI(Magnetic Resonance Imaging) findings of miliary tuberculosis of the brain Six patients with miliary tuberculosis of the brain diagnosed by characteristic clinical or laboratory findings were studied with spin echo MRI before and after contrast enhancement. We retrospectively evaluated MRI findings according to the appearance, distribution, location, and enhancement pattern of the granulomas as well as associated other abnormalities. In six patients, contrast-enhanced MRI of the brain showed numerous punctate, contrast enhancing lesions scattered throughout the brain. Unenhanced MRI failed to demonstrate small granulomas except a few small foci of high signal intensity on T2-weighted images. The shapes of enhancing granulomas were homogeneous nodular enhancement in 86% of cases and small ring enhancement in 14%. 98% of granulomas were smaller than 3-mm and 2% were larger. Although several lesions were located in the basal ganglia, thalamus, and brain stem, the majority were located in the subpial and subarachnoid space. There was no significant difference in distribution of granulomas between the supratentorial and the infratentorial areas. Other associated abnormalities were focal meningitis in five cases and focal cerebritis in one. On chest radiograph, all patients had miliary tuberculosis in the lungs. Contrast-enhanced T1-weighted MR imaging showed numerous round, very small enhancing lesions scattered throughout the brain. The majority of lesions were located in the subpial and subarachnoid space. Contrast-enhanced T1-weighted images are helpful in the detection and diagnosis of miliary disseminated tuberculous granulomas and meningitis.

  9. Clinical results and radiographic appearance of the Rashkind double umbrella device in patients with occlusion of the ductus arteriosus

    Energy Technology Data Exchange (ETDEWEB)

    Galal, O. [King Faisal Specialist Hospital and Research Centre, Riyadh (Saudi Arabia)]|[Department of Cardiovascular Diseases, MBC 16, King Faisal Specialist Hospital and Research Centre, PO Box 3354, Riyadh 11211 (Saudi Arabia); Sinner, W. von; Azhari, N.; Al-Fadley, F.; De Moor, M.; Boecker, J.; Fawzy, M.E..; Al-Halees, Z. [King Faisal Specialist Hospital and Research Centre, Riyadh (Saudi Arabia)

    1997-12-01

    Background. The Rashkind double umbrella device for patent arterial duct occlusion has been used in many patients. Its radiographic appearance has not been sufficiently described. Objective. To present the varying radiographic appearances of the Rashkind double umbrella device on the chest X-ray. Materials and methods. The chest radiographs of 69 patients (median age 60 months; median weight 17 kg), who underwent closure of their patent arterial duct between March 1990 and August 1994, were reviewed. The following parameters were evaluated: (1) the size of the heart (cardio-thoracic ratio) and pulmonary vessels, (2) the position of the device in AP/PA and lateral projections. The results of occlusion of the patent arterial duct were also reviewed. Results. Sixty-two of 69 (90 %) pa- tients had complete occlusion after a follow-up between 2 months and 3{sup 1}/{sub 2} years. The cardio-thoracic ratio showed significant reduction at follow-up (P < 0.001). The two different size devices could be well differentiated in the AP and the lateral projection. In 14 patients (20 %) the device was in an asymmetrical position. There was no significant correlation between position of the device and success of occlusion in our material. Conclusion. Complete occlusion of the arterial duct using Rashkind double umbrella devices can be achieved in 90 % of our population. In 20 % the device will have an asymmetrical position. There is no correlation between asymmetrical position of the device in the chest radiograph and residual shunting. (orig.) With 7 figs., 12 refs.

  10. Radiographic image quality and dose at thorax, abdomen and skull of patients at HC-FMB-UNESP

    Energy Technology Data Exchange (ETDEWEB)

    Alvarez, Matheus; Giacomini, Guilherme; Bacchim Neto, Fernando A.; Alves, Allan F.F.; Velo, Alexandre F.; Miranda, Jose R.A., E-mail: matheus@ibb.unesp.br [Universidade Estadual Paulista Julio de Mesquita Filho (IBB/UNESP), Botucatu, SP (Brazil). Inst. de Biociencias. Dept. de Fisica e Biofisica; Pina, Diana R. de, E-mail: drpina@fmb.unesp.br [Universidade Estadual Paulista Julio de Mesquita Filho (FMB/UNESP), Botucatu, SP (Brazil). Inst. de Biociencias. Dept. de Doencas Tropicais e Diagnostico por Imagem

    2013-11-01

    ICRP 103 specifies reference dose levels to be used during radiographic exams. Usually, the radiographer qualitative determines the best radiographic technique (kV and mAs) in order to obtain better image quality with the lowest dose. The objective of this study was to evaluate the doses used in examination of the chest, abdomen and skull in patients of different physical sizes, and infer about the amount of dose required to maintain acceptable radiological contrast in patients of different physical sizes. Techniques used by experienced radiographers of HC-FMB-UNESP for examinations of the chest (PA), abdomen (AP) and skull (AP) for patients of different thickness (small, medium and thick body) were obtained. Dose measurements were performed referring to all kV/mAs combinations. PMMA phantoms were placed below the ionization chamber. The Signal Difference Noise Ratio (SDNR) of the images of the phantoms were calculated from an area of contrast and a region of normal tissue. The Figure of Merit (FoM) was calculated for each of the exam modality. Measured FoM decreased according to the thickness of the chest and abdomen, indicating the need to increase the dose level to maintain the same level of image contrast. Patients thicker usually end up getting more than twice the dose of lean patients. Required image quality levels for correct diagnosis should be obtained using dose levels as low as reasonably practicable examination. These factors highlight the need for a program of quality assurance and effective dose studies in actual service. (author)

  11. Screening panoramic radiographs in a group of patient visiting a health promotion center

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jae Seo; Kang, Byung Cheol [Chonnam National University College of Medicine, Gwangju (Korea, Republic of)

    2005-12-15

    To report the incidence of radiological findings from screening panoramic radiograph and verify the validity of the panoramic radiography for screening purposes. Six thousand one hundred and sixty panoramic radiographs taken from the patients visiting the Health Promotion Center of CNUH were selected for this retrospective study. Panoramic radiographs were examined into the following pathologic conditions : the presence of periodontal bone loss, dental caries, peri apical radiolucencies, retained roots, impacted supernumerary teeth, impacted third molars, odontoma, cystic lesions other than radicular cyst, sialoliths, and mixed radiolucent-radiopaque lesions. Number of pathologic conditions and Prevalence values were recorded. The prevalence of pathologic conditions were 72.9% of periodontal bone loss, 32.2% of dental caries, 11.9% of peri apical radiolucencies, 10.8% of retained roots, 0.4% of root fracture, 1.0% of impacted supernumerary teeth, 1.0% of impacted third molars, 0.06% of odontoma, 0.08% of cystic lesion other than radicular cyst, 0.2% of prolonged retention of deciduous tooth, 0.1% of sialolith, and 0.04% of mixed radiopaque and radiolucent lesion. Although the panoramic radiograph should not be used to replace intraoral radiographic and clinical examinations, this study showed that many dental pathologic conditions could be detected on panoramic radiographs. The panoramic radiograph might serve as a diagnostic aid in dental health evaluation programs.

  12. Herniation pits in the femoral neck: a radiographic indicator of femoroacetabular impingement?

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jin Ah; Park, Ji Seon; Ryu, Kyungnam [Kyung Hee University, Department of Radiology, Kyung Hee University Medical Center, Seoul (Korea, Republic of); Jin, Wook [Kyung Hee University, Department of Radiology, East-West Neo Medical Center, Seoul (Korea, Republic of)

    2011-02-15

    The purpose was to assess the significance of herniation pits in the femoral neck for radiographic diagnosis of femoroacetabular impingement (FAI). Eighty hips in 62 patients (bilateral in 18) with neutral pelvic orientation were enrolled. Herniation pits were diagnosed when they were located at the anterosuperior femoral neck, close to the physis, and with a diameter of >3 mm. The five radiographic signs of FAI were used: lateral center edge angle (LCE) >39 , acetabular index (AI) {<=}0, extrusion index (EI) <25%, acetabular retroversion, and pistol-grip deformity. Patients with radiographs suggesting FAI were retrospectively correlated with their clinical symptoms. Positive radiographic signs were observed in 7 hips with LCE, 7 with AI, and 80 with EI criteria. Only 3 hips out of 80 (3.8%) showed all of the signs. The acetabular retroversion and pistol-grip deformity were seen in 12/80 and 3/80 hips, respectively. The total number of hips that met radiographic criteria for FAI, including pincer type and cam type, was 18 (23%). However, none of these hips were clinically diagnosed with FAI. All symptomatic hips (11/80) presented only with nonspecific pain, and 2 hips out of 11 showed radiographic signs of FAI. The low frequency of positive radiographic signs suggesting FAI with related symptoms among patients with herniation pits suggests that herniation pits have limited significance in the diagnosis of FAI. Therefore it can be concluded that an incidental finding of herniation pits does not necessarily imply a correlation with FAI. (orig.)

  13. Radiographically Occult and Subtle Fractures: A Pictorial Review

    Directory of Open Access Journals (Sweden)

    Mohamed Jarraya

    2013-01-01

    Full Text Available Radiographically occult and subtle fractures are a diagnostic challenge. They may be divided into (1 “high energy trauma fracture,” (2 “fatigue fracture” from cyclical and sustained mechanical stress, and (3 “insufficiency fracture” occurring in weakened bone (e.g., in osteoporosis and postradiotherapy. Independently of the cause, the initial radiographic examination can be negative either because the findings seem normal or are too subtle. Early detection of these fractures is crucial to explain the patient’s symptoms and prevent further complications. Advanced imaging tools such as computed tomography, magnetic resonance imaging, and scintigraphy are highly valuable in this context. Our aim is to raise the awareness of radiologists and clinicians in these cases by presenting illustrative cases and a discussion of the relevant literature.

  14. Computer assisted measurement of femoral cortex thickening on radiographs

    Science.gov (United States)

    Yao, Jianhua; Liu, Yixun; Chen, Foster; Summers, Ronald M.; Bhattacharyya, Timothy

    2013-03-01

    Radiographic features such as femoral cortex thickening have been frequently observed with atypical subtrochanteric fractures. These features may be a valuable finding to help prevent fractures before they happen. The current practice of manual measurement is often subjective and inconsistent. We developed a semi-automatic tool to consistently measure and monitor the progress of femoral cortex thickening on radiographs. By placing two seed points on each side of the femur, the program automatically extracts the periosteal and endosteal layers of the cortical shell by active contour models and B-spline fitting. Several measurements are taken along the femur shaft, including shaft diameter, cortical thickness, and integral area for medial and lateral cortex. The experiment was conducted on 52 patient datasets. The semi-automatic measurements were validated against manual measurements on 52 patients and demonstrated great improvement in consistency and accuracy (p<0.001).

  15. [Conventional radiology, digital radiology with photostimulable phosphor, laser digitalization of thoracic radiographic films at the bedside. A comparative study].

    Science.gov (United States)

    Miceli, M; Stamati, R; Burci, P; Guidarelli, G; Sartoni Galloni, S

    1992-10-01

    The bedside chest images obtained with conventional radiology and with "on line" and "off line" digital modalities were compared to evaluate the respective capabilities in visualizing chest anatomical structures. Seventy patients were submitted to bedside chest examinations with a portable unit; both a conventional film and a digital system (PCR Graphics 1, Philips) with photostimulable phosphor imaging plate were fitted in the radiographic cassette. The former was digitized using an "off line" laser beam unit (FD 2000, Dupont); the latter was subsequently postprocessed by modifying contrast, optical density and spatial frequencies. Thus, 4 different viewing modalities were obtained for each examination: a) conventional radiography; b) standard digital radiography; c) postprocessed digital radiography; d) digitized conventional radiography. Detectability rates of chest anatomical structures were analyzed by 4 independent radiologists on the different images and expressed by a score 1-4. The values were always higher with digital modalities than with the conventional one and the differences were statistically significant (Student's t-test modified by Bonferroni). In particular, the greatest difference was found between c) and a) in retrocardiac lung parenchyma and in skeletal structures, in favour of c). Concerning the comparative adequacy of the various digital modalities, higher detectability rates of chest anatomical structures were obtained with c), but also with b), than with d).

  16. Radiation induced osteosarcoma of the chest wall

    Energy Technology Data Exchange (ETDEWEB)

    Sugimoto, Tsutomu; Yuki, Yoshihiro; Oizumi, Hiroyuki; Iijima, Yoshiyuki; Fujishima, Tsukasa; Shimazaki, Yasuhisa [Yamagata Univ. (Japan). School of Medicine

    1996-11-01

    We report a successful resection of an osteosarcoma in the chest wall developed 25 years after irradiation. A 74-year-old woman was admitted to our hospital for her swelling in the left chest wall at August 24, 1995. At 49-year-old, she had undergone an operation and postoperative irradiation for left breast cancer. A computed tomography demonstrated a mass in the left chest wall that destructed the first rib, extending into the pleural space and invaded into the left common carotid and subclavian arteries. We planned a radical resection of the mass after repeated CT scannings, since it was histopathologically diagnosed as a chondrosarcoma and showed a rapid growth. The tumor was completely removed with radical transmediastinal forequarter amputation of the partial chest wall and total left upper extremity. The left common carotid artery was partially replaced with 6 mm EPTFE vascular prosthesis. The chest wall was reconstructed with Marlex-mesh prosthesis and a myocutaneous flap. She was discharged uneventfully and has not shown any evidence of recurrence. (author)

  17. Bone images from dual-energy subtraction chest radiography in the detection of rib fractures

    Energy Technology Data Exchange (ETDEWEB)

    Szucs-Farkas, Zsolt, E-mail: zsolt.szuecs@insel.ch [Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Lautenschlager, Katrin, E-mail: katrin@students.unibe.ch [Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Flach, Patricia M., E-mail: patricia.flach@irm.unibe.ch [Institute of Forensic Medicine, University of Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Ott, Daniel, E-mail: daniel.ott@insel.ch [Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Strautz, Tamara, E-mail: tamara.strautz@insel.ch [Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Vock, Peter, E-mail: peter.vock@insel.ch [Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland); Ruder, Thomas D., E-mail: thomas.ruder@irm.unibe.ch [Institute of Forensic Medicine, University of Bern, Freiburgstrasse 4, Bern CH-3010 (Switzerland)

    2011-08-15

    Objective: To assess the sensitivity and image quality of chest radiography (CXR) with or without dual-energy subtracted (ES) bone images in the detection of rib fractures. Materials and methods: In this retrospective study, 39 patients with 204 rib fractures and 24 subjects with no fractures were examined with a single exposure dual-energy subtraction digital radiography system. Three blinded readers first evaluated the non-subtracted posteroanterior and lateral chest radiographs alone, and 3 months later they evaluated the non-subtracted images together with the subtracted posteroanterior bone images. The locations of rib fractures were registered with confidence levels on a 3-grade scale. Image quality was rated on a 5-point scale. Marks by readers were compared with fracture localizations in CT as a standard of reference. Results: The sensivity for fracture detection using both methods was very similar (34.3% with standard CXR and 33.5% with ES-CXR, p = 0.92). At the patient level, both sensitivity (71.8%) and specificity (92.9%) with or without ES were identical. Diagnostic confidence was not significantly different (2.61 with CXR and 2.75 with ES-CXR, p = 0.063). Image quality with ES was rated higher than that on standard CXR (4.08 vs. 3.74, p < 0.001). Conclusions: Despite a better image quality, adding ES bone images to standard radiographs of the chest does not provide better sensitivity or improved diagnostic confidence in the detection of rib fractures.

  18. Are routine pelvic radiographs in major pediatric blunt trauma necessary?

    Energy Technology Data Exchange (ETDEWEB)

    Lagisetty, Jyothi [Memorial Hermann Medical Center, Emergency Medicine Department, Houston, TX (United States); Slovis, Thomas [Wayne State University School of Medicine, Department of Radiology, Pediatric Imaging, Children' s Hospital of Michigan, Detroit, MI (United States); Thomas, Ronald [Children' s Hospital of Michigan, Wayne State University of Medicine, Department of Pediatrics, Detroit, MI (United States); Knazik, Stephen; Stankovic, Curt [Wayne State University of Medicine, Division of Emergency Medicine, Children' s Hospital of Michigan, Detroit, MI (United States)

    2012-07-15

    Screening pelvic radiographs to rule out pelvic fractures are routinely used for the initial evaluation of pediatric blunt trauma. Recently, the utility of routine pelvic radiographs in certain subsets of patients with blunt trauma has been questioned. There is a growing amount of evidence that shows the clinical exam is reliable enough to obviate the need for routine screening pelvic radiographs in children. To identify variables that help predict the presence or absence of pelvic fractures in pediatric blunt trauma. We conducted a retrospective study from January 2005 to January 2010 using the trauma registry at a level 1 pediatric trauma center. We analyzed all level 1 and level 2 trauma victims, evaluating history, exam and mechanism of injury for association with the presence or absence of a pelvic fracture. Of 553 level 1 and 2 trauma patients who presented during the study period, 504 were included in the study. Most of these children, 486/504 (96.4%), showed no evidence of a pelvic fracture while 18/504 (3.6%) had a pelvic fracture. No factors were found to be predictive of a pelvic fracture. However, we developed a pelvic fracture screening tool that accurately rules out the presence of a pelvic fracture P = 0.008, NPV 99, sensitivity 96, 8.98 (1.52-52.8). This screening tool combines eight high-risk clinical findings (pelvic tenderness, laceration, ecchymosis, abrasion, GCS <14, positive urinalysis, abdominal pain/tenderness, femur fracture) and five high-risk mechanisms of injury (unrestrained motor vehicle collision [MVC], MVC with ejection, MVC rollover, auto vs. pedestrian, auto vs. bicycle). Pelvic fractures in pediatric major blunt trauma can reliably be ruled out by using our pelvic trauma screening tool. Although no findings accurately identified the presence of a pelvic fracture, the screening tool accurately identified the absence of a fracture, suggesting that pelvic radiographs are not warranted in this subset of patients. (orig.)

  19. Radiographic Evaluation of Valvular Heart Disease With Computed Tomography and Magnetic Resonance Correlation.

    Science.gov (United States)

    Lempel, Jason K; Bolen, Michael A; Renapurkar, Rahul D; Azok, Joseph T; White, Charles S

    2016-09-01

    Valvular heart disease is a group of complex entities with varying etiologies and clinical presentations. There are a number of imaging tools available to supplement clinical evaluation of suspected valvular heart disease, with echocardiography being the most common and clinically established, and more recent emergence of computed tomography and magnetic resonance imaging as additional supportive techniques. Yet even with these newer and more sophisticated modalities, chest radiography remains one of the earliest and most common diagnostic examinations performed during the triage of patients with suspected cardiac dysfunction. Recognizing the anatomic and pathologic features of cardiac radiography including the heart's adaptation to varying hemodynamic changes can provide clues to the radiologist regarding the underlying etiology. In this article, we will elucidate several principles relating to chamber modifications in response to pressure and volume overload as well as radiographic appearances associated with pulmonary fluid status and cardiac dysfunction. We will also present a pattern approach to optimize analysis of the chest radiograph for valvular heart disease, which will help guide the radiologist down a differential diagnostic pathway and create a more meaningful clinical report.

  20. A radiographic study of solitary bone cysts

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Kyung Rak; Hwang, Eui Hwan; Lee, Sang Rae [Dept. of Oral and Maxillofacial Radiology, Division of Dentistry, Kyung Hee University, Seoul (Korea, Republic of)

    1994-02-15

    The aim of this study was to evaluate the clinical, radiographic and histopathologic features of 23 cases of solitary bone cyst by means of the analysis of radiographs and biopsy specimens in 23 persons visited the Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University and Chunbuk National University. The obtained results were as follows; 1. The incidence of solitary bone cyst was almost equal in males (52.2%) and in females(42.8%) and the prevalent age of the solitary bone cyst were the second decade (47.8%) and the third decade (21.7%). 2. In the signs and symptoms of solitary bone cyst, pain or tenderness revealed in 17.4%, swelling revealed in 13.0%, pain and swelling revealed in 21.7%, paresthesia revealed in 4.4% and 43.5% were a symptom and the tooth vitality involved in the solitary bone cyst, 76.5% were posterior and 23.5% were either positive or negative. 3. In the location of the solitary bone cyst, 47.8% present posterior region, 21.7% present anterior region, 21.6% present anterior and posterior region, 4.4% present condylar process area. 4. In the hyperostotic border of the solitary bone cyst, 47.8% were seen entirely, 21.8% were seen partially, and 30.4% were not seen. 5. In the change of tooth, 59.1% were loss of the alveolar lamina dura, 13.6% were root resorption 4.55% were tooth displacement, 4.55% were root resorption and tooth displacement. 6. In the change of cortical bone of the solitary bone cyst, 39.1% were intact and 60.9% were thinning and expansion of cortical bone. 7. In the histopathologic findings of 9 cases, 33.3% were thin connective tissue wall, 11.1% were thickened myxo-fibromatous wall, 55.6% were thickened myxofibromatous wall with dysplastic bone formation.

  1. Construction of a homogeneous phantom for radiographic image standardization; Construcao de um fantoma homogeneo para padronizacao de imagens radiograficas

    Energy Technology Data Exchange (ETDEWEB)

    Pina, Diana Rodrigues de

    1996-12-31

    The principle of radiodiagnosis consists in the fact the X-ray beam is attenuated at different degrees by distinct tissues. For this reason, the anatomical structures have distinct radiological opacities, that produce the radiographic image. The progresses in radiology are related to the development if new radiographic image formation systems that enable an amplification in the quality, with low dose and/or risk to the patient. The objective of this work is the sensitometric valuation of a screen-film combination, that is still the most used, for the standardization, of radiographic images. Thinking about this, were constructed homogeneous phantoms of the chest, skull and pelvis, for the calibration of X-ray beams, with the purpose of obtaining radiographic images of good quality, basing in the routine of a radiodiagnosis service and in the scientific knowledge. Questions were approached about the choice of the suitable equipment, that allow the obtention of k Vp and m As combinations, to produce radiographic images of good quality, and the reproduction of these combinations to any conventional equipment of diagnostic X-rays. Also presented are the comparison of the doses imparted by these combinations and those used in routine of the Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto`s radiodiagnosis service. (author) 24 refs., 27 figs., 12 tabs.

  2. European Guidelines for AP/PA chest X-rays: routinely satisfiable in a paediatric radiology division?

    Energy Technology Data Exchange (ETDEWEB)

    Tschauner, Sebastian; Marterer, Robert; Guebitz, Michael; Weissensteiner, Sabine; Sorantin, Erich [Medical University of Graz, Division of Paediatric Radiology, Department of Radiology, Graz (Austria); Kalmar, Peter I. [Medical University of Graz, Division of Vascular and Interventional Radiology, Department of Radiology, Graz (Austria); Talakic, Emina [Medical University of Graz, Division of General Radiological Diagnostics, Department of Radiology, Graz (Austria)

    2016-02-15

    Accurate collimation helps to reduce unnecessary irradiation and improves radiographic image quality, which is especially important in the radiosensitive paediatric population. For AP/PA chest radiographs in children, a minimal field size (MinFS) from ''just above the lung apices'' to ''T12/L1'' with age-dependent tolerance is suggested by the 1996 European Commission (EC) guidelines, which were examined qualitatively and quantitatively at a paediatric radiology division. Five hundred ninety-eight unprocessed chest X-rays (45 % boys, 55 % girls; mean age 3.9 years, range 0-18 years) were analysed with a self-developed tool. Qualitative standards were assessed based on the EC guidelines, as well as the overexposed field size and needlessly irradiated tissue compared to the MinFS. While qualitative guideline recommendations were satisfied, mean overexposure of +45.1 ± 18.9 % (range +10.2 % to +107.9 %) and tissue overexposure of +33.3 ± 13.3 % were found. Only 4 % (26/598) of the examined X-rays completely fulfilled the EC guidelines. This study presents a new chest radiography quality control tool which allows assessment of field sizes, distances, overexposures and quality parameters based on the EC guidelines. Utilising this tool, we detected inadequate field sizes, inspiration depths, and patient positioning. Furthermore, some debatable EC guideline aspects were revealed. (orig.)

  3. Prephonatory chest wall posturing in stutterers.

    Science.gov (United States)

    Baken, R J; McManus, D A; Cavallo, S A

    1983-09-01

    The possibility that prephonatory chest wall posturing is abnormal in stutterers was explored by observing rib cage and abdominal hemicircumference changes during the interval between the presentation of a stimulus and the production of/alpha/by a group of stutterers (N = 5). It was found that the patterns of chest wall adjustment for phonation were qualitatively identical in the stutterers and in a comparable group of normal men studied previously. There was, however, a significant difference in the way in which lung volume changed during the execution of the chest wall adjustment. This was considered to be indicative of delayed glottal closure among the stutterers rather than representative of a primary ventilatory disturbance.

  4. Imaging of Chest Wall Lesions in Children

    Directory of Open Access Journals (Sweden)

    A. Hekmatnia

    2008-01-01

    Full Text Available Chest wall lesions in childhood include a wide range of pathologies; Benign lesions include lipoma, neurofibroma, lymphangioma, hemangioma, and mesenchymal hamartoma."nMalignant lesions include Neuroblastoma, Rhabdo-myosarcoma, Ewing sarcoma, and Askin tumor."nSystemic diseases such as leukemia, lymphoma, Langerhans cell histiocytosis, and also infections such as tuberculosis, and actinomycosis may also cause chest wall lesions."nThe imaging characteristics of these lesions are re-viewed, but only a minority of the lesions shows diagnostic imaging features, and most of lesions re-quire biopsy and histopathological examination for "ndefinitive diagnosis."nThe role of different modalities is discussed with an emphasis on magnetic resonance imaging for demonstrating lesion morphology and local spread. Computed tomography and neuclear medicine being used mainly to assess remote disease."nIn this lecture, we discuss about imaging of chest wall lesions in children.

  5. Cardiogenic shock following blunt chest trauma

    Directory of Open Access Journals (Sweden)

    Rodríguez-González Fayna

    2010-01-01

    Full Text Available Cardiac contusion, usually caused by blunt chest trauma, has been recognized with increased frequency over the past decades. Traffic accidents are the most frequent cause of cardiac contusions resulting from a direct blow to the chest. Other causes of blunt cardiac injury are numerous and include violent fall impacts, interpersonal aggression, explosions, and various types of high-risk sports. Myocardial contusion is difficult to diagnose; clinical presentation varies greatly, ranging from lack of symptoms to cardiogenic shock and arrhythmia. Although death is rare, cardiac contusion can be fatal. We present a case of cardiac contusion due to blunt chest trauma secondary to a fall impact, which manifested as cardiogenic shock.

  6. [Chest wall mesenchymal hamartoma: a case report].

    Science.gov (United States)

    Morales, Olga Lucía; Valencia, María de la Luz; Gómez, Carolina; Pérez, María del Pilar; Sanín, Emilio; Vásquez, Luz Marina

    2010-01-01

    Chest wall mesenchymal hamartoma is an extremely rare benign tumor. Approximately 80 cases have been reported in the literature. Most tumors are manifested at birth with a painless palpable mass of the chest wall, usually unilateral. Respiratory symptoms result from extrinsic compression of the pulmonary parenchyma, and the severity of the symptoms will depend on the size and location of the lesion. Imaging features are characteristic, but definitive diagnosis is histological. Herein, a case is described of a four month old infant with diagnosis of chest wall mesenchymal hamartoma, manifested at birth. Different treatment options are described, including expectations from tumor management, the possibility of spontaneous regression, and the morbidity associated with the surgical option.

  7. Radiographic signs and diagnosis of dental disease.

    Science.gov (United States)

    Bellows, J

    1993-08-01

    Dental radiographs are critical for the complete assessment and treatment of dental diseases. Dental radiography is commonly used to evaluate congenital dental defects, periodontal disease, orthodontic manipulations, oral tumors, endodontic treatments, oral trauma, and any situation where an abnormality is suspected. Although standard radiographic equipment and film can be used to produce dental radiographs, dental X-ray equipment and film provide superior quality images and greater convenience of animal patient positioning. An understanding of normal dental radiographic anatomy is important when interpreting dental radiographs. Stage III periodontitis is the earliest stage of periodontal disease at which radiographic abnormalities become apparent. Bone loss associated with periodontal disease can be classified as either horizontal or vertical. Periapical radiolucencies can represent granulomas, cysts, or abscesses, whereas periapical radiodensities may represent sclerotic bone or condensing osteitis. Lytic lesions of the bone of the jaw often represent oral neoplasms. Neoplasms also can displace or disrupt teeth in the dental arch. Resorptive lesions can be external or internal and appear as radiolucent areas involving the external surface of the root or the pulp cavity, respectively. Feline dental resorptive lesions, also known as odontoclastic resorptions, are a specific form of dental resorptive lesions unique to cats.

  8. MRI of radiographically occult ischial apophyseal avulsions

    Energy Technology Data Exchange (ETDEWEB)

    Meyers, Arthur B. [Cincinnati Children' s Hospital Medical Center, Department of Radiology, MLC 5031, Cincinnati, OH (United States); Children' s Hospital of Wisconsin, Milwaukee, WI (United States); Laor, Tal; Zbojniewicz, Andrew M.; Anton, Christopher G. [Cincinnati Children' s Hospital Medical Center, Department of Radiology, MLC 5031, Cincinnati, OH (United States)

    2012-11-15

    Acute avulsions of unossified ischial apophyses in children may go undetected on radiography. Therapy includes rest and rehabilitation; however, substantial displacement may require surgery. Our purpose is to illustrate the utility of MRI in the detection of these radiographically occult injuries in skeletally immature children. This retrospective study of more than 5 years included children with ischial avulsions who were evaluated with both radiography and MRI within 3 weeks of acute injury. Initially, radiographs were reviewed to identify those children with unossified ischial apophyses. Subsequently, their MRI examinations were assessed for physeal disruption, bone/soft tissue edema, periosteal/perichondrial elevation and disruption. Initial and follow-up radiographs (if available) were reviewed. Patient age, symptoms and offending activity were determined from clinical records. Five children met inclusion criteria. All initial radiographs were normal. MRI showed: edema (n = 5), periosteal elevation (n = 4), periosteal/perichondrial disruption (n = 4), >5.5 mm displacement (n = 0). Follow-up radiographs in two children (2 and 2.5 months from MRI) showed osseous ischial irregularity. The apophyses remained unossified. Acute unossified ischial apophyseal avulsions in children may be radiographically undetected. In the setting of correlative clinical symptoms, MRI can be used to identify these injuries and to help direct appropriate therapy. (orig.)

  9. Evaluation of cancer detection efficiency by means of hybrid and inverse filter in chest radiography

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Youn Young; Kim, Tae Young; Kim, Hyun Ji; Kim, Jung Min [Dept. of Radiological Science, Korea university, Seoul (Korea, Republic of); Park, Min Seock [Radiation Safety and Section, Korea Institute of Radiological and Medical Sciences, Seoul (Korea, Republic of)

    2013-12-15

    The purpose of this study is to evaluate usefulness of Hybrid image and Inverse image about detection of tumor shadow in chest radiography using ROC analysis. Original images of 60 cases are selected from Standards digital image date base issued by the Japanese Society of Radiological Technology. Through computer language of C, Inverse images of 60 cases and Hybrid image of 30 cases are made. The continues reading experiment was conducted. In the case of inverse image were observed by 5 radiographer and 2 radiologist. In the case of In case of Hybrid image were observed by 3 student radiographer and 2 e