WorldWideScience

Sample records for ct personal authors

  1. 32 CFR 887.3 - Persons authorized CILs.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Persons authorized CILs. 887.3 Section 887.3 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE MILITARY PERSONNEL ISSUING... CILs. CILs may be issued only to: (a) A service member whose character of service was honorable or...

  2. Personalized low dose CT via variable kVp

    Science.gov (United States)

    Wang, Hui; Jin, Yannan; Yao, Yangyang; Wu, Mingye; Yan, Ming; Tao, Kun; Yin, Zhye; De Man, Bruno

    2015-03-01

    Computerized Tomography (CT) is a powerful radiographic imaging technology but the health risk due to the exposure of x-ray radiation has drawn wide concern. In this study, we propose to use kVp modulation to reduce the radiation dose and achieve the personalized low dose CT. Two sets of simulation are performed to demonstrate the effectiveness of kVp modulation and the corresponding calibration. The first simulation used the helical body phantom (HBP) that is an elliptical water cylinder with high density bone inserts. The second simulation uses the NCAT phantom to emulate the practical use of kVp modulation approach with region of interest (ROI) selected in the cardiac region. The kVp modulation profile could be optimized view by view based on the knowledge of patient attenuation. A second order correction is applied to eliminate the beam hardening artifacts. To simplify the calibration process, we first generate the calibration vectors for a few representative spectra and then acquire other calibration vectors with interpolation. The simulation results demonstrate the beam hardening artifacts in the images with kVp modulation can be eliminated with proper beam hardening correction. The results also show that the simplification of calibration did not impair the image quality: the calibration with the simplified and the complete vectors both eliminate the artifacts effectively and the results are comparable. In summary, this study demonstrates the feasibility of kVp modulation and gives a practical way to calibrate the high order beam hardening artifacts.

  3. The communication of the radiation risk from CT in relation to its clinical benefit in the era of personalized medicine. Pt. 1. The radiation risk from CT

    Energy Technology Data Exchange (ETDEWEB)

    Westra, Sjirk J. [Massachusetts General Hospital, Division of Pediatric Radiology, Boston, MA (United States)

    2014-10-15

    The theory of radiation carcinogenesis has been debated for decades. Most estimates of the radiation risks from CT have been based on extrapolations from the lifespan follow-up study of atomic bomb survivors and on follow-up studies after therapeutic radiation, using the linear no-threshold theory. Based on this, many population-based projections of induction of future cancers by CT have been published that should not be used to estimate the risk to an individual because of their large margin of error. This has changed recently with the publication of three large international cohort follow-up studies, which link observed cancers to CT scans received in childhood. A fourth ongoing multi-country study in Europe is expected to have enough statistical power to address the limitations of the prior studies. The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) report released in 2013 specifically addresses variability in response of the pediatric population exposed to ionizing radiation. Most authorities now conclude that there is enough evidence to link future cancers to the radiation exposure from a single CT scan in childhood but that cancer risk estimates for individuals must be based on the specifics of exposure, age at exposure and absorbed dose to certain tissues. Generalizations are not appropriate, and the communication of the CT risk to individuals should be conducted within the framework of personalized medicine. (orig.)

  4. Personal computer aided cerebral perfusion imaging with dynamic CT

    Institute of Scientific and Technical Information of China (English)

    林燕; 高培毅

    2004-01-01

    @@Reports on the clinical implementation of dynamic computerised tomography (CT) perfusion imaging and quantitative measurement have increased dramatically of late.1-8 The advantages of dynamic CT perfusion imaging and quantitative measurement for the diagnosis of acute cerebral infarction have been acknowledged. However, most overseas CT vendors set perfusion imaging software package as an option for graphic workstation at a too high price for domestic practitioners. To foster the domestic implementation and development of this new technology, we have extended the earlier work.1,2 Applying the theory of central volume principle to DICOM 3.0 standard forms of prime CT images, we developed dynamic CT perfusion imaging and quantitative measure-ment programmes for PCs using Visual C+ + in Windows 98 system.

  5. 32 CFR 552.122 - Personnel not authorized to possess or retain personal weapons.

    Science.gov (United States)

    2010-07-01

    ... personal weapons. 552.122 Section 552.122 National Defense Department of Defense (Continued) DEPARTMENT OF... authorized to possess or retain personal weapons. (a) Possession, retention or storage of personal weapons or... enforcement officer authorized to carry the weapon under state or federal law, while on Fort Lewis or a sub...

  6. Adolescents' and Parents' Conceptions of Parental Authority and Personal Autonomy.

    Science.gov (United States)

    Smetana, Judith G.; Asquith, Pamela

    1994-01-01

    Conceptions of parental authority and ratings of adolescent-parent conflict were assessed in 6th-, 8th-, and 10th-graders and their parents. Participants judged the legitimacy of parental authority and rated the frequency and intensity of conflict regarding 24 hypothetical issues. Adolescents and parents agreed that parents should retain authority…

  7. Adolescents' and Parents' Conceptions of Parental Authority and Personal Autonomy.

    Science.gov (United States)

    Smetana, Judith G.; Asquith, Pamela

    1994-01-01

    Conceptions of parental authority and ratings of adolescent-parent conflict were assessed in 6th-, 8th-, and 10th-graders and their parents. Participants judged the legitimacy of parental authority and rated the frequency and intensity of conflict regarding 24 hypothetical issues. Adolescents and parents agreed that parents should retain authority…

  8. CT dose minimization using personalized protocol optimization and aggressive bowtie

    Science.gov (United States)

    Wang, Hui; Yin, Zhye; Jin, Yannan; Wu, Mingye; Yao, Yangyang; Tao, Kun; Kalra, Mannudeep K.; De Man, Bruno

    2016-03-01

    In this study, we propose to use patient-specific x-ray fluence control to reduce the radiation dose to sensitive organs while still achieving the desired image quality (IQ) in the region of interest (ROI). The mA modulation profile is optimized view by view, based on the sensitive organs and the ROI, which are obtained from an ultra-low-dose volumetric CT scout scan [1]. We use a clinical chest CT scan to demonstrate the feasibility of the proposed concept: the breast region is selected as the sensitive organ region while the cardiac region is selected as IQ ROI. Two groups of simulations are performed based on the clinical CT dataset: (1) a constant mA scan adjusted based on the patient attenuation (120 kVp, 300 mA), which serves as baseline; (2) an optimized scan with aggressive bowtie and ROI centering combined with patient-specific mA modulation. The results shows that the combination of the aggressive bowtie and the optimized mA modulation can result in 40% dose reduction in the breast region, while the IQ in the cardiac region is maintained. More generally, this paper demonstrates the general concept of using a 3D scout scan for optimal scan planning.

  9. [Speech behavior and neurotic personality structure (author's transl)].

    Science.gov (United States)

    Goeppert, S

    1976-02-27

    Speech behavior of the patient and the analyst is considered with regard to the psychoanalytic situation and its regulating factors such as transference and countertransference. If the psychoanalytic situation is regarded as a means to investigate the patient and his symptoms, his verbal behavior seems to depend on the unconscious motives forming his neurotic personality structure. On the other hand, if the psychoanalytic situation is regarded as a communicative situation, the verbal behavior of the patient as well as of the analyst depends rather on their "here-and-now" transference relationship in certain phase of the psychoanalytic process.

  10. 31 CFR 545.510 - Importation of household and personal effects authorized.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Importation of household and personal... Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TALIBAN (AFGHANISTAN... household and personal effects authorized. The importation of household and personal effects originating...

  11. The similarity of attitudes towards personal and impersonal types of authority among adolescent schoolchildren.

    Science.gov (United States)

    Rigby, K; Schofield, P; Slee, P T

    1987-09-01

    This paper examines the extent to which the attitudes of young adolescents towards personal and impersonal types of authority are differentiated. Reliable measures of attitudes towards personal authorities (parents and teachers) and impersonal authorities (the police and the law) were developed with a preliminary sample of 155 secondary school students. These measures were employed with further samples of (a) third year High School students (n = 77) who also completed the Keeves (1974) Attitudes to School and School Learning Scale, and (b) first year High School students (n = 250) who also completed the Ray and Jones (1983) self-report measures of authority-salient behaviours in relation to their parents and teachers. The attitudes of the students were relatively pro-authority and did not differ according to gender. In general, the younger group of students were the more pro-authority, significantly so on the measures of attitude towards personal authorities. For each sample the pro-authority attitude measures loaded substantially (greater than 0.6) on the first factor of a principal components analysis. Correlations between these measures and (a) attitudes to school and school learning and (b) reported authority-salient behaviours were positive and, in general, significant for each sex. Overall, the results provided little support for the view that attitudes towards personal and impersonal type of authority are dissimilar.

  12. 75 FR 15413 - Approval for Processing Authority, Foreign-Trade Zone 196, ATC Logistics & Electronics (Personal...

    Science.gov (United States)

    2010-03-29

    ... & Electronics (Personal Navigation Devices), Fort Worth, Texas Pursuant to its authority under the Foreign-Trade...) adopts the following Order: Whereas, ATC Logistics & Electronics, an operator of Foreign-Trade Zone...

  13. Influence of Close Friends on the Boundaries of Adolescent Personal Authority

    Science.gov (United States)

    Daddis, Christopher

    2008-01-01

    Perceptions of close friends' influence on the construction of boundaries between legitimate parental and personal authority were assessed using a semistructured interview with 183 early (M = 11.82 years) and middle (M = 15.72 years) adolescents. Participants described sources relevant to the construction of authority beliefs, processes of friend…

  14. Influence of Close Friends on the Boundaries of Adolescent Personal Authority

    Science.gov (United States)

    Daddis, Christopher

    2008-01-01

    Perceptions of close friends' influence on the construction of boundaries between legitimate parental and personal authority were assessed using a semistructured interview with 183 early (M = 11.82 years) and middle (M = 15.72 years) adolescents. Participants described sources relevant to the construction of authority beliefs, processes of friend…

  15. The relationship of personal qualities and efficiency of professional activity of employees of tax authorities

    Directory of Open Access Journals (Sweden)

    Kvashnina N.N.

    2015-11-01

    Full Text Available The article is devoted to the relationship of personal qualities and efficiency of professional activity of employees of tax authorities. In work the analysis of professional activity of the employee of the tax authority, attempt to consider a set of actions included in the notion "efficiency of professional activity", and considers personal qualities necessary, from our point of view, for the tax officials of official duties. The article presents the results of empirical research on the relationship of personal qualities and efficiency of professional activity of employees of tax authorities. The study was conducted on the basis of Inspection of Federal tax service of Russia № 26 in Moscow. In research took part the employees of the following departments: in-house departments, field departments, division of work with taxpayers, the division of debt. The relationship between identified qualities as well as differences in manifestation of studied qualities in the employees of tax bodies with different lifetime.

  16. Pediatric personalized CT-dosimetry Monte Carlo simulations, using computational phantoms

    Science.gov (United States)

    Papadimitroulas, P.; Kagadis, G. C.; Ploussi, A.; Kordolaimi, S.; Papamichail, D.; Karavasilis, E.; Syrgiamiotis, V.; Loudos, G.

    2015-09-01

    The last 40 years Monte Carlo (MC) simulations serve as a “gold standard” tool for a wide range of applications in the field of medical physics and tend to be essential in daily clinical practice. Regarding diagnostic imaging applications, such as computed tomography (CT), the assessment of deposited energy is of high interest, so as to better analyze the risks and the benefits of the procedure. The last few years a big effort is done towards personalized dosimetry, especially in pediatric applications. In the present study the GATE toolkit was used and computational pediatric phantoms have been modeled for the assessment of CT examinations dosimetry. The pediatric models used come from the XCAT and IT'IS series. The X-ray spectrum of a Brightspeed CT scanner was simulated and validated with experimental data. Specifically, a DCT-10 ionization chamber was irradiated twice using 120 kVp with 100 mAs and 200 mAs, for 1 sec in 1 central axial slice (thickness = 10mm). The absorbed dose was measured in air resulting in differences lower than 4% between the experimental and simulated data. The simulations were acquired using ∼1010 number of primaries in order to achieve low statistical uncertainties. Dose maps were also saved for quantification of the absorbed dose in several children critical organs during CT acquisition.

  17. 19 CFR 24.2 - Persons authorized to receive Customs collections.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Persons authorized to receive Customs collections. 24.2 Section 24.2 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... Customs collections. Port directors, Customs cashiers, Customs inspectors, Customs dock tellers, and...

  18. 14 CFR 43.3 - Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations. 43.3 Section 43.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING,...

  19. 14 CFR 43.7 - Persons authorized to approve aircraft, airframes, aircraft engines, propellers, appliances, or...

    Science.gov (United States)

    2010-01-01

    ... FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE... holder of a repairman certificate (light-sport aircraft) with a maintenance rating may approve an... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Persons authorized to approve aircraft...

  20. Achievements of the first wave personal medical services (PMS) pilots in England. A health authority perspective.

    Science.gov (United States)

    Leese, Brenda; Petchey, Roland

    2003-01-01

    Personal medical services pilots were introduced in England in 1998 to provide increased flexibility to general practitioners practising in deprived areas, to improve service provision and reduce inequalities. The aim of this study was to identify health authority perspectives of the achievements of their pilots. Less than half of the health authorities agreed that their pilots' original objectives had been completely achieved. Support, commitment and enthusiasm from within and outside the pilots, and the ability to be flexible, were helpful in promoting change management. Obstacles were financial difficulties and a lack of understanding of personal medical services. The opinion was that personal medical services had made a highly regarded contribution to the local health economy, especially in the provision of new services and the promotion of new staff roles. The results provide lessons for primary care organisations in England and elsewhere in terms of the factors required to successfully implement change.

  1. Structure of personality psychology based on cocitation analysis of prominent authors

    Directory of Open Access Journals (Sweden)

    Jevremov Tanja

    2007-01-01

    Full Text Available Traditional Author Cocitation Analysis was applied in order to map the personality psychology as a research field. A group of 25 authors were selected from the Haggbloom (1999, 2002 lists of the most cited and prominent psychologists, judged to be the main contributors to the field. All of their cocitations identified in the three year volumes of SSCI were downloaded to be analyzed by cluster analysis and MDS. The analysis resulted in four clusters comprising (1 theorists of individual differences amalgamated with authors of biological orientation with R. Cattell positioned centrally, (2 behaviorists joined by socio-cognitive theorists led by M.E.P. Seligman and A. Bandura, and (3 the group of psychoanalytic (dynamic theorists with A. Adler in the middle. In fourth cluster G. Allport, H. Murray, K. Lewin, W. Mischel, and D. Buss were found mixed together to make a rather heterogeneous group. In two-axes representation one of the dimensions was understood as reflecting methodological and the other one content-specific differences among the authors, although this interpretation is not univocal. The same procedure was repeated on citations given to the same authors in SocioFakt - the Serbian Citation Index for Social Sciences, revealing a reduced picture of the domain. At this portrait, some important authors are missing as a result of their low citation rate, suggesting that in the Serbian personality psychology entire research fields don’t exist. .

  2. Reporducibilities of cephalometric measurements of three-dimensional CT images reconstructed in the personal computer

    Energy Technology Data Exchange (ETDEWEB)

    Jeon, Kug Jin; Park, Hyok; Lee, Hee Cheol; Kim, Kee Deog; Park, Chang Seo [Yonsei University College of Medicine, Seoul (Korea, Republic of)

    2003-09-15

    The purpose of this study was to report the reproducibility of intra-observer and inter-observer consistency of cephalometric measurements using three-dimensional (3D) computed tomography (CT), and the degree of difference of the cephalometric measurements. CT images of 16 adult patients with normal class I occlusion were sent to personal computer and reconstructed into 3D images using V-Works 3.5{sup TM} (Cybermed Inc., Seoul, Korea). With the internal program of V-Works 3.5{sup TM}, 12 landmarks on regular cephalograms were transformed into 21 analytic categories and measured by 2 observers and in addition, one of the observers repeated their measurements. Intra-observer difference was calculated using paired t-test, and inter-observer by two sample test. There were significant differences in the intra-observer measurements (p<0.05) in four of the categories which included ANS-Me, ANS-PNS, Cdl-GO (Lt), GoL-GoR, but with the exception of Cdl-Go (Lt), ZmL-ZmR, Zyo-Zyo, the average differences were within 2 mm of each other. The inter-observer observations also showed significant differences in the measurements of the ZmL-ZmR and Zyo-Zyo categories (p<0.05). With the exception of the Cdl-Me (Rt), ZmL-ZmR, Zyo-Zyo categories, the average differences between the two observers were within 2mm, but the ZmL-ZmR and Zyo-Zyo values differed greatly with values of 8.10 and 19.8 mm respectively. In general, 3D CT images showed greater accuracy and reproducibility, with the exception of suture areas such as Zm and Zyo, than regular cephalograms in orthodontic measurement, showing differences of less than 2 mm, therefore 3D CT images can be useful in cephalometric measurements and treatment planning.

  3. An Empirical Investigation of the Construct of Personality Authority in Late Adolescent Women and Their Level of College Adjustment.

    Science.gov (United States)

    Protinsky, Howard; Gilkey, Joyce Katherine

    1996-01-01

    Assessed a random sample of 102 female students from a small private college concerning levels of individuation, intimacy, intimidation, parental triangulation, and personal authority. These concepts formed the construct of Personal Authority and were tested regarding their relationship to self-esteem, physical health, and college adjustment.…

  4. The communication of the radiation risk from CT in relation to its clinical benefit in the era of personalized medicine. Pt. 2. Benefits versus risk of CT

    Energy Technology Data Exchange (ETDEWEB)

    Westra, Sjirk J. [Massachusetts General Hospital, Division of Pediatric Radiology, Boston, MA (United States)

    2014-10-15

    In order to personalize the communication of the CT risk, we need to describe the risk in the context of the clinical benefit of CT, which will generally be much higher, provided a CT scan has a well-established clinical indication. However as pediatric radiologists we should be careful not to overstate the benefit of CT, being aware that medico-legal pressures and the realities of health care economics have led to overutilization of the technology. And even though we should not use previously accumulated radiation dose to a child as an argument against conducting a clinically indicated scan (the ''sunk-cost'' bias), we should consider patients' radiation history in the diagnostic decision process. As a contribution to future public health, it makes more sense to look for non-radiating alternatives to CT in the much larger group of basically healthy children who are receiving occasional scans for widely prevalent conditions such as appendicitis and trauma than to attempt lowering CT use in the smaller group of patients with chronic conditions with a limited life expectancy. When communicating the CT risk with individual patients and their parents, we should acknowledge and address their concerns within the framework of informed decision-making. When appropriate, we may express the individual radiation risk, based on estimates of summated absorbed organ dose, as an order of magnitude rather than as an absolute number, and compare this with the much larger natural cancer incidence over a child's lifetime, and with other risks in medicine and daily life. We should anticipate that many patients cannot make informed decisions on their own in this complex matter, and we should offer our guidance while maintaining respect for patient autonomy. Proper documentation of the informed decision process is important for future reference. In concert with our referring physicians, pediatric radiologists are well-equipped to tackle the complexities

  5. The communication of the radiation risk from CT in relation to its clinical benefit in the era of personalized medicine: part 2: benefits versus risk of CT.

    Science.gov (United States)

    Westra, Sjirk J

    2014-10-01

    In order to personalize the communication of the CT risk, we need to describe the risk in the context of the clinical benefit of CT, which will generally be much higher, provided a CT scan has a well-established clinical indication. However as pediatric radiologists we should be careful not to overstate the benefit of CT, being aware that medico-legal pressures and the realities of health care economics have led to overutilization of the technology. And even though we should not use previously accumulated radiation dose to a child as an argument against conducting a clinically indicated scan (the "sunk-cost" bias), we should consider patients' radiation history in the diagnostic decision process. As a contribution to future public health, it makes more sense to look for non-radiating alternatives to CT in the much larger group of basically healthy children who are receiving occasional scans for widely prevalent conditions such as appendicitis and trauma than to attempt lowering CT use in the smaller group of patients with chronic conditions with a limited life expectancy. When communicating the CT risk with individual patients and their parents, we should acknowledge and address their concerns within the framework of informed decision-making. When appropriate, we may express the individual radiation risk, based on estimates of summated absorbed organ dose, as an order of magnitude rather than as an absolute number, and compare this with the much larger natural cancer incidence over a child's lifetime, and with other risks in medicine and daily life. We should anticipate that many patients cannot make informed decisions on their own in this complex matter, and we should offer our guidance while maintaining respect for patient autonomy. Proper documentation of the informed decision process is important for future reference. In concert with our referring physicians, pediatric radiologists are well-equipped to tackle the complexities associated with the communication

  6. 著作人身权性质辨析%Analysis on the Personal Right of Author and the Personal Right of Civil Law

    Institute of Scientific and Technical Information of China (English)

    宋贻珍

    2014-01-01

    There are two wrong opinions on personal right of an author :one insists on that personal right of an author is the right of identity ,the other considers it as property right .The former view only sees the phenomenon of personal right of an author but ignores its essence ,and the latter view misunder-stands its essential characteristic .It is arguable that personal right of an author is a special social personal right w hich shouldn't be merged into the personal right of civil law ,and that personal right of an author should adhere to its primary meaning and be improved in details .%认为著作人身权是身份权的观点,只看到现象而忽视了著作人身权本质;认为著作人身权是财产权的观点,是对人格权的本质属性存在误解,没有看到社会人格权能够转让的属性。著作人身权是特殊的人格权,取缔或者合并到民法中的人格权中都是不可取的,而应该在现有基础上对著作人身权的内容加以完善。

  7. Occupational dosimetry commissioning of a PET-CT: learning curve and staff participation; Dosimetria ocupacional en la puesta en funcionamiento de un PET-TC curva de aprendizaje y participacion del personal

    Energy Technology Data Exchange (ETDEWEB)

    Sierra Diaz, F.; Hurtado Sanchez, A.; Gomez Cortes, M. S.; Gonzalez Ruiz, C.; Gago Gomez, P.; Ruiz Galan, G.; Lopez Bote, M. A.

    2011-07-01

    The Nuclear Medicine Department, Hospital General Universitario Gregorio Maranon has been in clinical use PET-CT equipment at the end of 2009. The Dosimetry and Radiation Protection Service has been conducting surveillance at the facility and individual environmental dosimetry. Following the obligations contained in the performance specifications of the authorization granted by the Nuclear Safety Council (CSN), during the first year of the PET-CT has been tracking personal dosimetry of the professionals involved. As a novelty, had to take the ring dosimetry to control the dose equivalent in the hands instead of the normal wrist.

  8. American and Chinese children's evaluations of personal domain events and resistance to parental authority.

    Science.gov (United States)

    Smetana, Judith G; Wong, Mun; Ball, Courtney; Yau, Jenny

    2014-01-01

    A total of 267 five-, seven-, and ten-year-olds (M = 7.62), 147 in Hong Kong and 120 in the United States, evaluated hypothetical personal (and moral) events described as either essential or peripheral to actors' identity. Except for young Chinese in the peripheral condition, straightforward personal events were overwhelmingly evaluated as acceptable based on personal justifications. Children primarily endorsed compliance, but attributed negative emotions to actors when mothers forbade personal choices, especially when described as essential to identity. Conventional justifications declined among Chinese children and pragmatic justifications for these judgments increased with age for all children, as did judgments that personal events were up to the child. Rules were seen as more legitimate and events were seen as more up to mothers to decide for moral than personal events.

  9. Advantage of CT scan in muscular pathology. Personal cases and review of the literature

    Energy Technology Data Exchange (ETDEWEB)

    Laroche, M.; Rousseau, H.; Mazieres, B.; Bonafe, A.; Joffre, F.; Arlet, J.

    1989-05-01

    The advantage of CT scans in muscular pathology is studied. The scan, in addition to the diagnosis of tumors and muscular abscesses, permits to differentiate primary myopathies from neurogenic atrophies: in the course of myopathies, the muscle volume is preserved and they appear as a hypodensity; in neurogenic atrophies, the muscle volume is reduced with preserved density. The CT scan permits to determine the extension of these lesions. In the course of polymyositis, certain forms of rheumatid arthritis, the scan discloses a trabecular and 'worm-eaten' aspect of the muscles. This is also observed after long-term steroid therapy and other endocrine diseases (hyperthyroidism, osteomalacia) indicating an infra-clinical myopathy. In vertebral osteoporosis with fractures and patients with chronic lumbalgia, very ofter, an atrophy of the spinal muscle is observed. Finally, in the course of acquired kyphosis of the adult patient (camptocormia), the CT scan suggest an isolated myopathy, with late manifestations, of the paravertebral muscles.

  10. American and Chinese Children's Evaluations of Personal Domain Events and Resistance to Parental Authority

    Science.gov (United States)

    Smetana, Judith G.; Wong, Mun; Ball, Courtney; Yau, Jenny

    2014-01-01

    A total of 267 five-, seven-, and ten-year-olds (M = 7.62), 147 in Hong Kong and 120 in the United States, evaluated hypothetical personal (and moral) events described as either essential or peripheral to actors' identity. Except for young Chinese in the peripheral condition, straightforward personal events were overwhelmingly evaluated as…

  11. American and Chinese Children's Evaluations of Personal Domain Events and Resistance to Parental Authority

    Science.gov (United States)

    Smetana, Judith G.; Wong, Mun; Ball, Courtney; Yau, Jenny

    2014-01-01

    A total of 267 five-, seven-, and ten-year-olds (M = 7.62), 147 in Hong Kong and 120 in the United States, evaluated hypothetical personal (and moral) events described as either essential or peripheral to actors' identity. Except for young Chinese in the peripheral condition, straightforward personal events were overwhelmingly evaluated as…

  12. Skeletal idiopathic osteosclerosis helps to perform personal identification of unknown decedents: A novel contribution from anatomical variants through CT scan.

    Science.gov (United States)

    De Angelis, D; Gibelli, D; Palazzo, E; Sconfienza, L; Obertova, Z; Cattaneo, C

    2016-07-01

    Personal identification consists of the comparison of ante-mortem information from a missing person with post-mortem data obtained from an unidentified corpse. Such procedure is based on the assessment of individualizing features which may help in providing a conclusive identification between ante-mortem and post-mortem material. Anatomical variants may provide important clues to correctly identify human remains. Areas of idiopathic osteosclerosis (IO), or dense bone islands (DBIs) characterized by radiopaque areas of dense, trabeculated, non-inflamed vital bone represent one of these, potentially individualizing, anatomical features. This study presents a case where the finding of DBI was crucial for a positive identification through CT-scan. A decomposed body was found in an apartment in June 2014 in advanced decomposition and no dental records were available to perform a comparison for positive identification. Genetic tests were not applicable because of the lack of relatives in a direct line. The analysis of the only ante-mortem documentation, a CT-scan to the deceased dating back to August 2009, showed the presence of three DBIs within the trabecular bone of the proximal portion of the right femur. The same bony district was removed from the corpse during the autopsy and analysed by CT-scan, which verified the presence of the same features. Forensic practitioners should therefore be aware of the great importance of anatomical bone variants, such as dense bone islands for identification purposes, and the importance of advanced radiological technique for addressing the individualizing potential of such variants. We propose that anatomical variants of the human skeleton should be considered as being "primary identification characteristics" similar to dental status, fingerprints and DNA.

  13. Personal attributes of authors and reviewers, social bias and the outcomes of peer review: a case study.

    Science.gov (United States)

    Walker, Richard; Barros, Beatriz; Conejo, Ricardo; Neumann, Konrad; Telefont, Martin

    2015-01-01

    Peer review is the "gold standard" for evaluating journal and conference papers, research proposals, on-going projects and university departments. However, it is widely believed that current systems are expensive, conservative and prone to various forms of bias. One form of bias identified in the literature is "social bias" linked to the personal attributes of authors and reviewers. To quantify the importance of this form of bias in modern peer review, we analyze three datasets providing information on the attributes of authors and reviewers and review outcomes: one from Frontiers - an open access publishing house with a novel interactive review process, and two from Spanish and international computer science conferences, which use traditional peer review. We use a random intercept model in which review outcome is the dependent variable, author and reviewer attributes are the independent variables and bias is defined by the interaction between author and reviewer attributes. We find no evidence of bias in terms of gender, or the language or prestige of author and reviewer institutions in any of the three datasets, but some weak evidence of regional bias in all three. Reviewer gender and the language and prestige of reviewer institutions appear to have little effect on review outcomes, but author gender, and the characteristics of author institutions have moderate to large effects. The methodology used cannot determine whether these are due to objective differences in scientific merit or entrenched biases shared by all reviewers.

  14. Beliefs about Parental Authority Legitimacy among Refugee Youth in Jordan: Between- and Within-Person Variations

    Science.gov (United States)

    Smetana, Judith G.; Ahmad, Ikhlas; Wray-Lake, Laura

    2016-01-01

    We examined within- and between-person variations in parental legitimacy beliefs in a sample of 883 Arab refugee youth (M[subscript age] = 15.01 years, SD = 1.60), 277 Iraqis, 275 Syrians, and 331 Palestinians, in Amman, Jordan. Latent profile analyses of 22 belief items yielded 4 profiles of youth. The "normative" profile (67% of the…

  15. Beliefs about Parental Authority Legitimacy among Refugee Youth in Jordan: Between- and Within-Person Variations

    Science.gov (United States)

    Smetana, Judith G.; Ahmad, Ikhlas; Wray-Lake, Laura

    2016-01-01

    We examined within- and between-person variations in parental legitimacy beliefs in a sample of 883 Arab refugee youth (M[subscript age] = 15.01 years, SD = 1.60), 277 Iraqis, 275 Syrians, and 331 Palestinians, in Amman, Jordan. Latent profile analyses of 22 belief items yielded 4 profiles of youth. The "normative" profile (67% of the…

  16. Inference of personality projected onto fictional characters having an author's first name.

    Science.gov (United States)

    Barry, H

    2001-12-01

    Jane Austen projected some of her personality characteristics onto her fictional namesakes Jane Bennet in the novel Pride and Prejudice and Jane Fairfax in the novel Emma. Wishful fantasy seems satisfied by two attributes of both Janes. They are very beautiful, and they marry rich men they love. A feeling of inferiority was expressed by two attributes of both Janes, depicted as deficient in social communication and subordinate to the heroine of the novel.

  17. 78 FR 40351 - Procedural Rule To Establish Supervisory Authority Over Certain Nonbank Covered Persons Based on...

    Science.gov (United States)

    2013-07-03

    ... consumers regarding the offering or provision of consumer financial products or services. \\12\\ Regulation Z... financial products or services. The Bureau is authorized to, among other things, require reports from, and... provision of consumer financial products or services.'' The Bureau must base such reasonable-cause...

  18. Social Class and Income Inequality in the United States: Ownership, Authority, and Personal Income Distribution from 1980 to 2010.

    Science.gov (United States)

    Wodtke, Geoffrey T

    2016-03-01

    This study outlines a theory of social class based on workplace ownership and authority relations, and it investigates the link between social class and growth in personal income inequality since the 1980s. Inequality trends are governed by changes in between-class income differences, changes in the relative size of different classes, and changes in within-class income dispersion. Data from the General Social Survey are used to investigate each of these changes in turn and to evaluate their impact on growth in inequality at the population level. Results indicate that between-class income differences grew by about 60% since the 1980s and that the relative size of different classes remained fairly stable. A formal decomposition analysis indicates that changes in the relative size of different social classes had a small dampening effect and that growth in between-class income differences had a large inflationary effect on trends in personal income inequality.

  19. The Influence of the Language Personality of the Secondary Text’s Author on the Literary Text: Gender Aspect

    Directory of Open Access Journals (Sweden)

    Marina V. Laskova

    2016-12-01

    Full Text Available The purpose of this research is to show the influence of the translator on the literary text during the process of interpreting the original text into the target language. The article briefly summarizes the latest theory in the linguistic area: performative theory of gender. Through analyzing the men and women’s speech classification the article gives an account of the language personalities of the translators, who interpreted the literary works of the Russian author Anton Chekhov. This research provides valuable information about different gender models, which translators can perform due to the leading tendencies, altering in modern culture and society.

  20. Personalized Medicine: how to Switch from the Concept to the Integration into the Clinical Development Plan to Obtain Marketing Authorization.

    Science.gov (United States)

    Becquemont, Laurent; Bordet, Régis; Cellier, Dominic

    2012-01-01

    One of the challenges of the coming years is to personalize medicine in order to provide each patient with an individualized treatment plan. The three objectives of personalized medicine are to refine diagnosis, rationalize treatment and engage patients in a preventive approach. Personalization can be characterized by various descriptors whether related to the field, biology, imaging, type of lesion of the entity to be treated, comorbidity factors, coprescriptions or the environment As part of personalized medicine focused on biological markers including genetics or genomics, the integration of the clinical development plan to obtain marketing authorization may be segmented in 3 stages with a known descriptor identified before clinical development, a known descriptor discovered during clinical development or a known descriptor known after clinical development. For each stage, it is important to clearly define the technical optimization elements, to specify the expectations and objectives, to examine the methodological aspects of each clinical development phase and finally to consider the fast changing regulatory requirements in view of the few registered therapeutics complying with the definition of personalized medicine as well as the significant technological breakthroughs according to the screened and selected biomarkers. These considerations should be integrated in view of the time required for clinical development from early phase to MA, i.e. more than 10 years. Moreover, business models related to the economic environment should be taken into account when deciding whether or not to retain a biomarker allowing the selection of target populations in a general population. © 2012 Société Française de Pharmacologie et de Thérapeutique.

  1. (18)F-FDG PET/CT in Lymphoma: Has Imaging-Directed Personalized Medicine Become a Reality?

    Science.gov (United States)

    Barrington, Sally F; Johnson, Peter W M

    2017-10-01

    PET/CT using (18)F-FDG is an essential part of the management of patients with lymphoma. Efforts to standardize PET acquisition and reporting, including the 5-point Deauville scale, have enabled PET to become a surrogate for treatment success or failure in common lymphoma subtypes. This review summarizes the key clinical-trial evidence that supports PET-directed personalized approaches in lymphoma. PET-guided therapy has improved outcomes in Hodgkin lymphoma, using less chemotherapy and more selective radiotherapy. Attempts to intensify chemotherapy in aggressive non-Hodgkin lymphomas have, however, proved ineffective in patients treated with rituximab and chemotherapy. Trials are under way to determine whether PET can obviate consolidation radiotherapy in patients with diffuse large B-cell lymphoma and primary mediastinal B-cell lymphoma. More recently, PET has been reported to be a reliable predictor of outcome in follicular lymphoma requiring treatment, and prospective trials to test PET-guided therapy in this disease are anticipated. © 2017 by the Society of Nuclear Medicine and Molecular Imaging.

  2. Impact of design of installations and in the personal staff formation of the hybrid equipment: PET-CT; Impacto en el diseno de instalaciones y en la formacion del personal de los equipos hibridos: PET-CT

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, R.; Soler, K.; Alonso, I., E-mail: ramon@orasen.co.cu, E-mail: karen@orasen.co.cu, E-mail: azul@orasen.con.cu [Centro Nacional de Seguridad Nuclear, La Habana (Cuba)

    2013-11-01

    In this article the general principles to be considered in the design of a Nuclear Medicine department with PET-CT, and address the existing problems regarding training needs and staff training, to take on this new technology.

  3. Beliefs in the legitimacy of decision authority among Chinese adolescents and parents: a person-centered approach.

    Science.gov (United States)

    Wang, Yudan Chen; Faldowski, Richard A

    2014-10-01

    The present study examined Chinese parents' and adolescents' beliefs in the legitimacy of decision authority with reference to specific issues from the prudential, conventional, multifaceted, and personal domains. The sample included 698 adolescents aged 12-15 and their parents from southern China. Parents and adolescents reported on their own beliefs respectively. Subgroups of parent and adolescent participants characterized by distinct patterns of beliefs across issues were identified with latent class analyses (LCA). Further, configural frequency analyses (CFA) were conducted to examine the match between parent subgroups and adolescent subgroups. In addition, the LCA-derived subgroups varied across residency status, sibling status, and child gender, and were linked to adolescent depressive symptoms and school misconduct. These associations with external variables provided evidence for the distinctiveness of the latent classes. Results were discussed in light of social domain theory and the socio-historical context where the participants were situated. Copyright © 2014 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

  4. Impact in the facilities design and the personnel formation of the hybrid equipment s: PET-CT; Impacto en el diseno de instalaciones y en la formacion del personal de los equipos hibridos: PET-CT

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez, R.; Soler, K.; Alonso, I., E-mail: ramon@orasen.co.cu [Centro Nacional de Seguridad Nuclear, Calle 28 No. 504, Miramar, La Habana (Cuba)

    2014-08-15

    The Positron Emission Tomography-Computed Tomography (PET-CT), in the last years has demonstrated to be an image technique very effective for the diagnosis and the treatments continuation in different medical applications, because provides a valuable clinical information for the patient handling. The PET-CT is a technology used in the nuclear medicine for diagnostic, because integrates two different image techniques in an only device and in a single exam or study combine the results of both techniques. Also, is a hybrid tomograph that provides in a single image the biochemical information of a technique and the anatomical information of the other, what means that unifies the spatial resolution of a technique and the contrast resolution of the other, allowing this way to obtain a more precise and detailed diagnostic information, opening new opportunities in diagnostic, Radiotherapy planning and treatments continuation to the patients, being generated new links among the different radiological medical specialties. In nuclear medicine facilities with PET-CT, the radiological protection presents particular characteristics, due to the photons coexistence of 511 keV (generated by the annihilation of the emitted positrons from the different exposure sources) together to the X-rays emitted by the CT, what impacts in a direct way in those design requirements of the areas. On the other hand, this combination of the two image techniques imposes additional requirements to the learning and training of personnel, not considered until the present time. In this article are exposed the general principles that should be considered in the design of a Nuclear Medicine Area with PET-CT, and the existent problems related to the learning and training of personnel to assume this new technology are also approached. (Author)

  5. Targeting personalized medicine in a non-Hodgkin lymphoma patient with {sup 18F}-FDG and {sup 18F}-choline PET/CT

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Thalles H.; Filho, Raul S.; Castro, Ana Carolina G.; Paulino Junior, Eduardo; Mamede, Marcelo, E-mail: mamede.mm@gmail.com [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil)

    2017-02-15

    Early diagnosis and staging of non-Hodgkin lymphoma (NHL) is essential for therapeutic strategy decision. Positron emission tomography/computed tomography (PET/CT) with fluorodeoxyglucose (FDG), a glucose analogue, labeled with fluor-18 ({sup 18F}-FDG) has been used to evaluate staging, therapy response and prognosis in NHL patients. However, in some cases, {sup 18F}-FDG has shown false- -positive uptake due to inflammatory reaction after chemo and/or radiation therapy. In this case report, we present a NHL patient evaluated with {sup 18F}-FDG and {sup 18F}-choline PET/CT scan imaging pre- and post-therapy. {sup 18F}-FDG and {sup 18F}-choline PET/CT were performed for the purpose of tumor staging and have shown intense uptake in infiltrative tissue as well as in the lymph node, but with some mismatching in the tumor. Post-treatment {sup 18F}-FDG and {sup 18F}-choline PET/ CT scans revealed no signs of radiotracer uptake, suggesting complete remission of the tumor. {sup 18F}-choline may be a complimentary tool for staging and assessment of therapeutic response in non-Hodgkin lymphoma, while non-{sup 18F}-FDG tracer can be used for targeted therapy and patient management. (author)

  6. American and Chinese Children's Evaluations of Personal Domain Events and Resistance to Parental Authority

    Science.gov (United States)

    Smetana, Judith G.; Wong, Mun; Ball, Courtney; Yau, Jenny

    2014-01-01

    A total of 267 five-, seven-, and ten-year-olds (M = 7.62), 147 in Hong Kong and 120 in the United States, evaluated hypothetical personal (and moral) events described as either essential or peripheral to actors' identity. Except for young Chinese in the peripheral condition, straightforward personal events were overwhelmingly evaluated as…

  7. Use of CT in stapedial otosclerosis

    Energy Technology Data Exchange (ETDEWEB)

    Mafee, M.F.; Henrikson, G.C.; Deitch, R.L.; Norouzi, P.; Kumar, A.; Kriz, R.; Valvassori, G.E.

    1985-09-01

    Otosclerosis (otospongiosis) is a primary focal disease of the labyrinthine capsule. The stapes footplate is fixed when the spongiotic focus expands and invades the oval window. Persons with stapedial otosclerosis experience a progressive conductive hearing loss. In many cases, cochlear degeneration is observed, in which a mixed hearing loss occurs. Using computed tomography (CT), the authors studied the ears of 45 selected patients with conductive or mixed hearing loss. CT proved valuable in determining otosclerotic changes of the oval window and otic capsule. Spongiotic changes of the otic capsule are better appreciated by CT than complex motion tomography. The usefulness of CT in diagnosing other causes of conductive or mixed hearing loss is also described.

  8. Personality.

    Science.gov (United States)

    Funder, D C

    2001-01-01

    Personality psychology is as active today as at any point in its history. The classic psychoanalytic and trait paradigms are active areas of research, the behaviorist paradigm has evolved into a new social-cognitive paradigm, and the humanistic paradigm is a basis of current work on cross-cultural psychology. Biology and evolutionary theory have also attained the status of new paradigms for personality. Three challenges for the next generation of research are to integrate these disparate approaches to personality (particularly the trait and social-cognitive paradigms), to remedy the imbalance in the person-situation-behavior triad by conceptualizing the basic properties of situations and behaviors, and to add to personality psychology's thin inventory of basic facts concerning the relations between personality and behavior.

  9. 21 CFR 1301.11 - Persons required to register; requirement of modification of registration authorizing activity as...

    Science.gov (United States)

    2010-04-01

    ... chapter) to deliver, distribute, or dispense a controlled substance by means of the Internet if such... online pharmacy and proposes to dispense controlled substances by means of the Internet must obtain a... Act (21 U.S.C. 823(f) and 841(h)), it is unlawful for any person who falls within the definition...

  10. [Acoustic evoked driving reactions in the EEG and their conditioning related to the personality factor extraversion-introversion (author's transl)].

    Science.gov (United States)

    Haidmayer, I; Schulter, G

    1980-12-01

    Clicks were delivered in trains of 2,5 s duration at click repetition rates of 5 or 8/s to provoke rhythmical activity in the vertex-EEG ('driving response') and to condition the driving response to neutral stimuli in a discrimination paradigm. The Eysenck Personality Inventory was administered to define an independent personality variable, i.e. extraversion-introversion; the interaction of background activity, driving and conditioned driving response with the personality dimension was analyzed. In the background EEG there was a significant difference in the absolute power of the fast alpha-band between introverts and extraverts. Driving was only observed in the fundamental frequency of acoustic stimulation, not in the first harmonic. There was no interaction between driving response and extraversion-introversion or resting EEG activity. Classical conditioning of the driving response was successful with introverts only. Results were interpreted within the framework of Eysenck's personality theory. The possibility to study neurophysiological correlates of memory processes in humans by means of conditioned driving responses is discussed.

  11. Determination of the dose in eyes lens by TLD, in PET/CT by technicians in PET/CT service; Determinacion de la dosis en cristalino por medio de TLD, en personal tecnico de servicio PET/CT

    Energy Technology Data Exchange (ETDEWEB)

    Marino, Emiliano A., E-mail: eam.marino@gmail.com [Universidad Nacional de Cuyo (UNC), Rio Negro (Argentina). Instituto Balseiro; Arenas, German M. [Fundacion Escuela de Medicina Nuclear (FUESMEN), Mendoza (Argentina)

    2013-11-01

    This work was supported, on the one hand, in a part of the project ORAMED which consisted of a design of a TLD dosimeter for measurements of Hp (3) in areas close to the lens, for interventional radiology physicians. On the other hand, Berhens work proposes using calibrated TLDs Hp (0.07) and Hp (10) to estimate Hp (3) crystal. This resulted in dosimeters calibrated using Hp (10) slab, and mount them on glasses, to estimate the dose to the lens of the technical staff of the Service PET / CT. The value obtained 29mSv/year of Lens Dose Equivalent exceeds the recommended limit. We also demonstrate that, under the current working conditions, the values of Hp (3) reported from whole body dosimeter does not represent faithfully the lens dose.

  12. [The treatment of iatrogenic pneumothorax with small-gauge catheters. The author's personal experience in 30 cases].

    Science.gov (United States)

    Pancione, L

    2000-01-01

    Pneumothorax (PNX) is the most frequent complication in patients who have undergone lung biopsy. If PNX is asymptomatic and 30% and the patient is symptomatic treatment is needed. As a rule surgery is required and patients are hospitalized and undergo intrathoracic drainage with positioning of a large gauge catheter--i.e. over 15 French (F). In the last 10 years radiologists have begun treating PNX with much smaller catheters (7-10 F). We report the execution technique using 6.3 F catheters and the results obtained in 30 patients with symptomatic iatrogenic PNX and/or iatrogenic PNX > 30%. All the patients underwent CT-guided lung biopsy. Immediately after the procedure some follow-up scans were performed and a further expiratory radiograph with the patient in upright position was carried out after at least 2 hours. If an asymptomatic PNX 30% an intrathoracic drainage catheter was positioned. Under fluoroscopic or CT guidance we positioned a 5.7 F intrathoracic pig-tail catheter at a point corresponding to the 3rd or 4th intercostal space on the midclavear line. After manual suction of intrathoracic air we connected the catheter to a Hemlick valve and repeated the chest radiograph 4 hours later. If the PNX had not reformed the patient was discharged and submitted to radiographic follow-up every 24 hours for 3-5 days. On the contrary if the PNX had reformed, or if pain and/or dyspnea symptoms or signs persisted, the catheter was connected to a continuous-suction system and the patient rehospitalized for about 6 days. Oximetry was performed in all patients before biopsy, on PNX diagnosis, and after pulmonary re-expansion. All the cases were resolved and 9 patients were followed-up in the outpatients department. Drainage had to be repeated in 2 patients only and the 5.7 F catheters replaced with an 8 F and a 10 F catheters. Oximetric data were always correlated with the presence/absence of PNX. In particular, in PNX > 30% we found over 10% reduction relative to

  13. When Fairness Clashes with Personal Autonomy and Parental Authority: A Comparison of Daughters' and Mothers' Reasoning in Two Cultural Contexts in Turkey.

    Science.gov (United States)

    Acar, Melike

    2017-01-01

    The author examined religious and secular daughters' and mothers' reasoning about personal autonomy, maternal authority, and moral concepts in family decision-making situations in urban Turkey. Sixty-eight daughters and 34 mothers were individually interviewed about decision-making autonomy in general issues and hypothetical daughter-mother conflicts. Results indicated participants regardless of their family status and religious background assigned more decision-making autonomy to mothers when evaluating general issues. Analysis of controversial issues as hypothetical conflicts indicated that daughters and mothers do not hold unitary social judgments about the social world that were always consistent with the norms of their community and family status. There were some religious background differences in evaluations of some conflict stories as a function of whether they evaluated the choices as moral, conventional, personal, and prudential matters. Although secular and religious participants conceptualized daughters and mothers in relational terms rather than characterizing the relations and social issues by harmony, obedience to authority, and acceptance of norms findings suggested that secular women evaluated the hypothetical adolescent-mother conflicts more consistently when the issue entails violation of a moral principle such as justice, fairness, and well-being of the other.

  14. Liver trauma from penetrating injuries. Miscellanea, personal series, clinical and CT findings; Traumi epatici da lesioni penetranti. Miscellanea, casistica personale, aspetti clinici e con Tomografia Computerizzata

    Energy Technology Data Exchange (ETDEWEB)

    Salzano, A.; Nocera, V. [Ospedale San Giovanni di Dio di Frattamaggiore, Servizio di Radiologia, Frattamaggiore, NA (Italy); De Rosa, A.; Vigliotti, A. [Azienda Sanitaria Locale NA1, Radiologia, Naples (Italy); Rossi, E.; Carbone, M.; Gatta, G. [Naples Univ. Federico 2., Naples (Italy). Ist. di Scienze Radiologiche; Vitale, L. [Ospedale di Sorrento, Servizio di Radiologia, Sorrento, NA (Italy)

    2000-12-01

    Penetrating liver wounds are related to many causes and rank second after blunt abdominal and liver trauma. In this report are examined the clinical and radiological findings of personal series of patients with penetrating trauma, especially by firearms and stab and cut wounds. It will also tried to define the diagnostic workup of these traumas, which is especially based on CT signs of liver damage and associated changes and which is of basic importance for following treatment, both surgical or conservative. In the last seven years it was retrospectively reviewed 31 cases of penetrating liver trauma. The patients were 19 men and 12 women, ranging in age 18 to 73 (mean 42), with penetrating liver injuries from firearms (16 patients) and stab (9 cases) wounds; 6 patients had injuries from different cases. Abdominal CT was carried out in emergency with the CT Angiography (CTA) technique in all patients. In the patients with suspected chest and abdomen involvement CT was performed from the mid-chest for accurate assessment of diaphragm and lung bases and to exclude associated pleuropulmonary damage. Penetrating liver wounds were caused by firearms in 70% of cases, by stabbing in 12% and, in the extant 18%, by other cases such as home accidents, road and work traumas, and liver biopsy. In this series, the liver was most frequently involved, especially by firearms wounds; in the 16 cases the most frequent injuries were hemorrhagic tears. It was found bullets in the liver in 6 cases. In one case of home accident the patient wounded himself while slicing bread with a long knife, which cut into the anterior abdominal wall and tore the anterior liver capsule, as seen at CTA. Penetrating wounds to liver and abdomen are less frequent than those to the chest. In the past decade the use of CT has changed the diagnostic and therapeutic approach to such injuries completely, decreasing the resort to explorative laparotomy and hepatorrhaphy. Indeed, CT provides a clear picture of

  15. Thoracic CT

    Science.gov (United States)

    ... lungs; CT scan - chest Images CT scan Thyroid cancer - CT scan Pulmonary nodule, solitary - CT scan Lung mass, right upper ... Chest Injuries and Disorders CT Scans Emphysema Lung Cancer Lung Diseases Pleural Disorders Pneumonia Pulmonary Embolism Tuberculosis Browse the Encyclopedia A.D.A. ...

  16. CT of pituitary abscess

    Energy Technology Data Exchange (ETDEWEB)

    Fong, T.C.; Johns, R.D.; Long, M.; Myles, S.T.

    1985-06-01

    Pituitary abscess is a rare condition, with only 50 cases reported in the literature. Of those, 29 cases were well documented for analysis. Preoperative diagnosis of pituitary abscess is difficult. The computed tomographic (CT) appearance of pituitary abscess was first described in 1983; the abscess was depicted by axial images with coronal reconstruction. The authors recently encountered a case of pituitary abscess documented by direct coronal CT of the sella turcica.

  17. Fusion of 3D cardiac SPECT and 64-channel-CT angiography using personal computer in functionally relevant coronary artery stenosis

    Energy Technology Data Exchange (ETDEWEB)

    Bahk, Yong Whee [Sung-Ae General Hospital, Seoul (Korea, Republic of)

    2007-06-15

    Image fusion is fast catching attention as Wagner pointed out in this 2006 version of the recent progress and development presented at the annual meeting of Society of Nuclear Medicine. Prototypical fusion of bone scan and radiograph was already attempted at in 1961 when Fleming et al. published an article on strontium-85 bone scan. They simply superimposed dot scan on radiograph enabling simultaneous assessment of altered bone metabolism and local bone anatomy. Indeed the parallel reading of images of bone scan and radiography, CT, MRI or ultrasonography has been practiced in nuclear medicine long since. It is fortunate that recent development of computer science and technology along with the availability of refined CT and SPECT machines has permitted us to open a new avenue to digitally produce precise fusion image so that they can readily be read, exchanged and disseminated using internet. Ten years ago fusion was performed using Bresstrahlung SPECT/CT and it is now achievable by PET/CT and SPECT/CT software and SPECT/CT hardware. The merit of image fusion is its feasibility of reliable assessment of morphological and metabolic change. It is now applicable not only to stationary organs such as brain and skeleton but also to moving organs such as the heart, lung and stomach. Recently, we could create useful fusion image of cardiac SPECT and 64-channel CT angiograph. The former provided myocardial metabolic profile and the latter vascular narrowing in two patients with coronary artery stenosis and myocardial ischemia.

  18. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... A person who is very large may not fit into the opening of a conventional CT scanner ... radiologist will decide which type of examination is best for your child. top of page Additional Information ...

  19. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and accurate. ... the extent of soft tissue of the tumor, magnetic resonance imaging (MRI) may be helpful. A person who is ...

  20. Exemption from registration for persons authorized under U.S. Nuclear Regulatory Commission or agreement state medical use licenses or permits and administering the drug product DaTscan(TM). Interim final rule with request for comment.

    Science.gov (United States)

    2014-11-25

    The Drug Enforcement Administration (DEA) is amending its regulations to waive the requirement of registration for persons who are authorized under United States Nuclear Regulatory Commission or Agreement State medical use licenses or permits and administer the drug product DaTscan(TM).

  1. Helical CT for lumbosacral spinal

    Energy Technology Data Exchange (ETDEWEB)

    Tatsuno, Satoshi; Fukuda, Kunihiko [Jikei Univ., Tokyo (Japan). School of Medicine

    1996-10-01

    The aim of this study was to investigate the efficacy of helical CT for lumbosacral pathology. We performed helical CT with multiplanar reconstruction, including the formation of oblique transaxial and coronal images, in 62 patients with various lumboscral disorders, including 32 non-enhanced CT and 36 CT after myelography. We correlated the appearance of the stenotic spinal canal and neoplastic disease with the findings on MRI obtained at nearly the same time. We obtained helical CT images in all cases in about 30 seconds. The diagnostic ability of helical CT was roughly equal to that of MRI in patients with spondylosis deformans, spondylolisthesis and herniated nucleus pulposus. There was no significant difference in diagnostic value for degenerative lumbosacral disease with canal and foraminal stenosis between non-enhanced and post-myelography helical CT. However, non-enhanced helical CT could not clearly demonstrate neoplastic disease because of the poor contrast resolution. Helical CT was useful in evaluating degenerative disorder and its diagnostic value was nearly equal to that of MRI. We considered that helical CT may be suitable for the assessment of patients with severe lumbago owing to the markedly shortened examination time. However, if helical CT is used as a screening method for lumbosacral disease, one must be careful of its limitations, for example, poor detectability of neoplastic disease, vascular anomalies and so on. (author)

  2. Head CT scan

    Science.gov (United States)

    Brain CT; Cranial CT; CT scan - skull; CT scan - head; CT scan - orbits; CT scan - sinuses; Computed tomography - cranial; CAT scan - brain ... hold your breath for short periods. A complete scan usually take only 30 seconds to a few ...

  3. CT protocol review and optimization.

    Science.gov (United States)

    Kofler, James M; Cody, Dianna D; Morin, Richard L

    2014-03-01

    To reduce the radiation dose associated with CT scans, much attention is focused on CT protocol review and improvement. In fact, annual protocol reviews will soon be required for ACR CT accreditation. A major challenge in the protocol review process is determining whether a current protocol is optimal and deciding what steps to take to improve it. In this paper, the authors describe methods for pinpointing deficiencies in CT protocols and provide a systematic approach for optimizing them. Emphasis is placed on a team approach, with a team consisting of at least one radiologist, one physicist, and one technologist. This core team completes a critical review of all aspects of a CT protocol and carefully evaluates proposed improvements. Changes to protocols are implemented only with consensus of the core team, with consideration of all aspects of the CT examination, including image quality, radiation dose, patient care and safety, and workflow.

  4. CT paging arteriography with a multidetector-row CT. Advantages in splanchnic arterial imaging

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, Seiji [Keio Univ., Tokyo (Japan). School of Medicine

    1999-11-01

    The purpose of this study is to assess the utility of CT paging arteriography with a multidetector-row CT as a replacement for conventional angiography in the evaluation of splanchnic arterial anomalies. Sixty-three patients underwent CT paging arteriography with a multidetector-row CT. In the 56 patients with conventional angiographic correlation, there was only one minor disagreement with CT paging arteriography. In the 7 patients who underwent IVDSA (intra venous digital subtraction angiography), CT paging arteriography defined four hepatic arterial anomalies which could not be depicted by IVDSA. In conclusion, CT paging arteriography provides noninvasive means to identify splanchnic arterial anomalies. (author)

  5. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Chief Editor

    2016-06-01

    , and explore the implications of your findings for future research and for clinical practice or policy. Do not repeat in detail data or other information given in other parts of the manuscript, such as in the Introduction or the Results section.Link the conclusions with the goals of the study but avoid unqualified statements and conclusions not adequately supported by the data. In particular, distinguish between clinical and statistical significance, and avoid making statements on economic benefits and costs unless the manuscript includes the appropriate economic data and analyses. Avoid claiming priority or alluding to work that has not been completed. State new hypotheses when warranted, but label them clearly. g. References i. General Considerations Related to ReferencesAuthors should provide direct references to original research sources whenever possible. References should not be used by authors, editors, or peer reviewers to promote self-interests. Although references to review articles can be an efficient way to guide readers to a body of literature, review articles do not always reflect original work accurately. On the other hand, extensive lists of references to original work on a topic can use excessive space. Fewer references to key original papers often serve as well as more exhaustive lists, particularly since references can now be added to the electronic version of published papers, and since electronic literature searching allows readers to retrieve published literature efficiently.Do not use conference abstracts as references: they can be cited in the text, in parentheses, but not as page footnotes. References to papers accepted but not yet published should be designated as “in press” or “forthcoming.” Information from manuscripts submitted but not accepted should be cited in the text as “unpublished observations” with written permission from the source.Avoid citing a “personal communication” unless it provides essential information

  6. CT findings of fibromatoses

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hak Nam; Choi, Yeon Hwa; Shin, Hyun Jun [Lee Rha Hospital, Chung Ju (Korea, Republic of)

    1991-03-15

    Fibromatoses constitute a group of benign fibroblastic soft tissue tumors with a tendency for local invasion and recurrence. CT provides excellent anatomic detail of soft tissue tumors and precise location, size, and extent of the tumors. The authors evaluated 7 CT scans of 6 pathologically proven aggressive fibromatoses during the last 4 years. Five lesions arose in the lower extremities: 4 in the buttocks and 1 in the thigh. One lesion arose in the upper back. The tumors were lobulated in contour and varied in size from 3.7 cm to 10.7 cm. Fibromatosis tumors were usually hypodense with muscle when no contrast medium was used and hyperdense with better delineation during infusion of the contrast medium. Three patients had recurrent disease after surgical removal. Fibromatosis may infiltrate the surrounding tissue beyond the margins, indicated on CT scans and by palpation at operation. Therefore the surgeon should plan a wide resection around the apparent limits of the fibromatosis.

  7. The Practice of Zhu Xi's Literary Criticism Manifests the Authors'Personality%朱熹文艺批评实践对主体人格的彰显

    Institute of Scientific and Technical Information of China (English)

    杨万里

    2014-01-01

    In the process of literary criticism , personality determines artistic character , which constitutes Zhu Xi's consistent principle .This principle could be applicable not only to his poetry assessment , but also to his calli-graphy and painting criticism .His calligraphy criticism to some extent relates to the workstation and the skill levels . But the personality was the deciding factor .Too good personality or too bad personality would not be good for the as-sessment of the workstation and skills .Usually Zhu Xi analyzed the relation between calligraphy and subjects from two aspects, namely, commenting on calligraphy according to the personality and observing the character of the writer according to his calligraphy .The unity of the calligraphy and personality influenced Zhu Xi's discussion of the main cultivation and creation mentality .%朱熹在品评文艺的过程中秉承的一贯宗旨即是以人格定艺格。他评诗文如此,评字画亦毫无例外。他论书法虽在一定程度上也涉及工拙、技法层面的问题,但起决定作用的还是主体之人格。人格过人则不复论其工拙,人格不佳则文艺作品再精工其格亦属低下。朱熹在论及书法与主体关系时大抵涉及两个向度,即以人论书和以书观人。而书格与人格的统一性又影响着朱熹对主体修养与创作心态的论述。

  8. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Chief Editor

    2015-12-01

    statements on economic benefits and costs unless the manuscript includes the appropriate economic data and analyses. Avoid claiming priority or alluding to work that has not been completed. State new hypotheses when war¬ranted, but label them clearly.g. Referencesi. General Considerations Related to References Authors should provide direct references to original research sources whenever possible. References should not be used by authors, editors, or peer reviewers to promote self-interests. Although references to review articles can be an efficient way to guide readers to a body of literature, review articles do not always reflect original work accurately. On the other hand, extensive lists of references to original work on a topic can use excessive space. Fewer references to key original papers often serve as well as more exhaustive lists, particularly since references can now be added to the electronic version of published papers, and since electronic literature searching allows readers to retrieve published literature efficiently.Do not use conference abstracts as references: they can be cited in the text, in parentheses, but not as page footnotes. References to papers accepted but not yet published should be designated as “in press” or “forthcoming.” Information from manuscripts submitted but not accepted should be cited in the text as “unpublished observations” with written permission from the source.Avoid citing a “personal communication” unless it provides essential information not available from a public source, in which case the name of the person and date of communication should be cited in parentheses in the text. For scientific articles, obtain written permission and confirmation of accuracy from the source of a personal communication.Some but not all journals check the accuracy of all reference citations; thus, citation errors sometimes appear in the published version of articles. To minimize such errors, references should be verified using

  9. Personal attributes of authors and reviewers, social bias and the outcomes of peer review: a case study [v2; ref status: indexed, http://f1000r.es/5gj

    Directory of Open Access Journals (Sweden)

    Richard Walker

    2015-06-01

    Full Text Available Peer review is the "gold standard" for evaluating journal and conference papers, research proposals, on-going projects and university departments. However, it is widely believed that current systems are expensive, conservative and prone to various forms of bias. One form of bias identified in the literature is “social bias” linked to the personal attributes of authors and reviewers. To quantify the importance of this form of bias in modern peer review, we analyze three datasets providing information on the attributes of authors and reviewers and review outcomes: one from Frontiers - an open access publishing house with a novel interactive review process, and two from Spanish and international computer science conferences, which use traditional peer review. We use a random intercept model in which review outcome is the dependent variable, author and reviewer attributes are the independent variables and bias is defined by the interaction between author and reviewer attributes. We find no evidence of bias in terms of gender, or the language or prestige of author and reviewer institutions in any of the three datasets, but some weak evidence of regional bias in all three. Reviewer gender and the language and prestige of reviewer institutions appear to have little effect on review outcomes, but author gender, and the characteristics of author institutions have moderate to large effects. The methodology used cannot determine whether these are due to objective differences in scientific merit or entrenched biases shared by all reviewers.

  10. CT assessment of thoracic gunshot wounds. Our personal experience; Ruolo della Tomografia Computerizzata nelle lesioni da arma da fuoco del torace. Esperienza personale

    Energy Technology Data Exchange (ETDEWEB)

    Salzano, A.; De Rosa, A. [Ospedale Loreto Mare, Neaples (Italy). Servizio di Radiologia; Carbone, M.; Rossi, E.; Burnese, L. [Neaples Univ., Neaples (Italy). Ist. di Scienze Radiologiche; Muto, M.; Tuccillo, M. [Azienda Ospedaliera di Rilievo Nazionale A. Cardarelli, Neaples (Italy). Servizio di Neuroradiologia, 2 Servizio di Radiologia; Nunziata, A. [Pronto Soccorso Est, ASL NA1, Neaples (Italy). Area di Diagnostica per Immagini

    1999-11-01

    CT is a valuable tool in assessing thoracic gunshot wounds. CT is also the method of choice in emergency, because it permits rapid depiction of bullet damage to the chest and to other body districts. This in turn permits correct assessment of the main thoracic injuries, plus adequate and prompt planning of surgical treatment or support intensive care. It is reported on the role of CT in diagnosing the complex pleuropulmonary, cardiovascular and thoracic wall injuries caused by gunshot wounds, with their specific and acute signs which differ greatly fro those of other types of chest trauma. In the last 4 years, it was observed an amount of 76 cases of gunshot injury, twenty-six of them involved the chest. The patients, 25 men and 1 woman (mean age: 32 years, range: 17-48), were all submitted to emergency CT with iv contrast agent injection and the CT-angiography technique. The reanimator was always presented to monitor the patients' vital functions and shock state. CT of the chest was integrated with CT of the abdomen and pelvis in 4 cases and with CT of the skull in 3 cases, to detect associated bullet wounds if any. Chest radiography shows major gunshot wound damage to the chest and lungs, except for heart injuries and minimal pneumothorax. When abdominal and skull injuries are associated, CT should be the method of choice because it permits prompt and panoramic assessment of the severity of pulmonary and extra thoracic damage. This results in prompt and targeted treatment, avoiding unnecessary delays which may damage the patient further. [Italian] L'impiego della TC nella valutazione del paziente con lesioni da arma da fuoco del torace risulta essenziale e prioritario rispetto ad altre metodiche di diagnostica per immagini, poiche' consente di avere la rapida visione d'insieme dei danni provocati dal proiettile nel suo impatto con le strutture toraciche e con altri distretti corporei coinvolti. Cio' permette il corretto inquadramento

  11. CT images of gossypiboma

    Energy Technology Data Exchange (ETDEWEB)

    Jeon, Hae Jeong; Lim, Jong Nam; Choi, Young Chil; Park, Jeong Hee [College of Medicine, Kon-Kuk University, Seoul (Korea, Republic of)

    1994-04-15

    Surgical sponges retained after laparotomy can cause serious problem if they were not be identified in early state. In these circumstances abdominal CT yields the accurate diagnostic images. The purpose of this report is to present highly indicative findings permitting correct preoperative diagnosis of the gossypiboma. We experienced three cases in which CT showed the images sufficiently characteristic to suggest the correct preoperative diagnosis. We evaluated retrospectively the radiological images of gossypiboma confirmed by operation. Three patients were admitted due to palpable masses. Two female patients had medical histories of cesarean sections and a male patient had been operated due to malignant fibrous histiocytoma, previously. Abdominal CT scan of one case revealed huge ovoid hypodense mass with enhanced peripheral rim. Calcific spots and whirl-like stripes were noted within the lesion. Towel was found in pathologic specimen. CT images of two patients showed well-encapsulated, mixed fluid and soft tissue density mass with several gas bubbles. Surgical sponges were found within abscesses. The authors conclude that these characteristic CT findings and careful histories of surgery are very useful for correct pre-operative diagnosis and permit the guideline for the optimal plan of the surgical treatment.

  12. Young Chinese Children's Authority Concepts

    Science.gov (United States)

    Yau, Jenny; Smetana, Judith G.; Metzger, Aaron

    2009-01-01

    Using multilevel analyses, we examined the influence of domain (moral, conventional, and personal) and the familiarity of different authority figures (mother, teacher, person in charge, and stranger) in public, school, or home settings in 123 four to seven-year-old Chinese children (M = 5.6 years) in Hong Kong. Children affirmed authority more for…

  13. [The different genotypes of MTHFR 1298A>C and PON1 -108C>T polymorphisms confer the increased risk of the abdominal aortic aneurysm in the smoking and nonsmoking persons].

    Science.gov (United States)

    Strauss, Ewa; Waliszewski, Krzysztof; Pawlak, Andrzej L

    2005-01-01

    In abdominal aortic aneurysm (AAA) both the etiology and the pathogenesis are of the multifactorial character. The genetic component in the determination of this disease is proven by its familial occurrence. Smoking represents the best recognized risk factor of the AAA development. Increased concentrations of homocysteine (Hcy) in plasma are the common finding in these patients. It is assumed that the Hcy thiolactone, the most reactive metabolite of Hcy, may participate in the aortic wall destruction in AAA. The polymorphic variants of the methylenetetrahydrofolate reductase (MTHFR 677C>T and 1298A>C) influence tissue concentrations of the Hcy. Paraoxonase (PON1), the enzyme associated in plasma with the HDL fraction, as lactonase detoxicates the Hcy thiolactone. The promotor polymorphism of PON1 - 108C>T gene may determine the lower activity of this enzyme. In the case-control study of 106 patients with AAA and 97 healthy persons, the effects of selected genetic and nongenetic risk factors on development of AAA were assessed, considering the possibilities of interaction between them. It was found, that the arterial hypertension, cigarette smoking and the lower HDL fraction are independent risk factors of AAA. The arterial hypertension was a risk factor both in the smoking and the nonsmoking males, whereas the lower HDL fraction has been the risk factor only for the smoking men. By the multivariate analysis in the nonsmoking males the MTHFR 1298 AC and CC genotypes increased the risk of AAA development 4,8-fold in relation to the MTHFR 1298 AA nonsmoking males. In reference to the genotypes of the expected high impact on the metabolism of Hcy and of Hcy thiolactone, the genotypes of MTHFR 677TT and PON1 -108CT and TT were more frequent in smoking ones, but the difference was not significant. This observation fits with the assumption that the influence of smoking on the occurrence of AAA prevails over that of genetic variability. When the patients age was considered

  14. CT findings of colonic diverticulitis

    Energy Technology Data Exchange (ETDEWEB)

    Sasaki, Shigeru; Ohba, Satoru [Nagoya City Univ. (Japan). Medical School; Mizutani, Masaru [and others

    1998-11-01

    Although colonic diverticulitis has no indication for operation, but in some mistaken cases were operated with a diagnosis of acute appendicitis. We evaluated the CT findings of colonic diverticulitis about 19 cases and of asymptomatic colonic diverticula about 15 cases retrospectively. Diagnosis was confirmed of barium enema and operation. CT are complementary methods of examination that can delineated the range of thickening of the colon and the extension of inflammatory changes around the colon. We also believe that CT findings of colonic diverticulitis are useful for differentiating from a diagnosis of appendicitis. (author)

  15. Mystery Person

    Science.gov (United States)

    O'Brien, Tom

    2011-01-01

    This article features a mathematical game called "Mystery Person." The author describes how the Mystery Person game was tried with first-graders [age 6]. The Mystery games involve the generation of key questions, the coordination of information--often very complex information--and the formulation of consequences based on this…

  16. Mystery Person

    Science.gov (United States)

    O'Brien, Tom

    2011-01-01

    This article features a mathematical game called "Mystery Person." The author describes how the Mystery Person game was tried with first-graders [age 6]. The Mystery games involve the generation of key questions, the coordination of information--often very complex information--and the formulation of consequences based on this…

  17. CT Enterography

    Science.gov (United States)

    ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... kind, unlike MRI. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  18. Author Details

    African Journals Online (AJOL)

    Self-Esteem, Perceived Control and Communal Relationship Strength as Predictors of ... Relationship between parenting style, family type, personality dispositions and ... Assessment of Social Anxiety among Adolescents in Lagos Metropolis

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... a stroke, especially with a new technique called Perfusion CT. brain tumors. enlarged brain cavities (ventricles) in ... X-Ray and CT Exams Blood Clots CT Perfusion of the Head CT Angiography (CTA) Stroke Brain ...

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Professions Site Index A-Z Computed Tomography (CT) - Head Computed tomography (CT) of the head uses special ... the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a CT ...

  1. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... E-mail: Area code: Phone no: Thank you! Images × Image Gallery A child being prepared for a CT ... address): From (your name): Your e-mail address: Personal message (optional): Bees: Wax: Notice: RadiologyInfo respects your ...

  2. Usefulness and limit of CT diagnosis on appendicitis

    Energy Technology Data Exchange (ETDEWEB)

    Kuchiki, Megumi; Takanashi, Toshiyasu [Sakata Municipal Hospital, Yamagata (Japan); Yamaguchi, Koichi

    1997-08-01

    CT was performed in 104 patients with abdominal pain suspected appendicitis. CT showed positive finding (abnormal appendix, appendicolith, pericecal inflammatory change, fluid collection, LN swelling, abscess) and complication of appendicitis clearly. CT diagnosis showed high accuracy than clinical diagnosis. CT proved its usefulness especially only CT imaging showed the correct diagnosis. On the other hand, diverticulitis and terminal ileitis common diagnostic disease of appendicitis showed similar clinical appearance and CT image, caused to be difficult to diagnose correctly. In the cases showing similar image to appendicitis or atypical image, CT also proved its limit of the diagnosis on appendicitis. (author)

  3. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details ... Intra‑Operative Airway Management in Patients with Maxillofacial Trauma having Reduction and ... Clinical Parameters and Challenges of Managing Cervicofacial Necrotizing Fasciitis in a ...

  4. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details. Log in or ... Difficult airway management in a patient with giant malignant goitre scheduled for thyroidectomy - case report ... Airway Management Dilemma in a Patient with Maxillofacial Injury

  5. Author Details

    African Journals Online (AJOL)

    Journal Home > Advanced Search > Author Details ... Sequencing for Batch Production in a Group Flowline Machine Shop ... Sampling Plans for Monitoring Quality Control Process at a Plastic Manufacturing Firm in Nigeria: A Case Study

  6. Stereographic processing of CT figures in the hip joints

    Energy Technology Data Exchange (ETDEWEB)

    Tomihara, Mitsuo (Kinki Univ., Osakasayama, Osaka (Japan). School of Medicine)

    1990-12-01

    CT scan is widely used in orthopedic examinations. By three-dimentional display of the form of bone and joint, the change of form can be identified and the lesion can be located. CT figures were stereographically processed using a personal computer to display the images of the hip joints. The outlines of the bone seen on the CT film were directly traced with a digitizer, then the A/D converted coordinate data were obtained. The data for each slice were input to the personal computer. After conversion to normal coordinate and magnification, the data were filed on the floppy disc. These data were regained from the disk and made affin transformation to display the stereographic images of the hip joints. In a case of solitary bone cyst of the coxal bone, this method helped us to decide the appropriated surgical approach. For the congenital dysplasia of the hip, acetabular coverage was examined three-dimensionally and postoperative changes were assessed in the cases of shelf operation and intertrochanteric extension osteotomy. In the cases of aseptic necrosis of the femoral head, location and size of the necrotic area were clearly visualized and the appropriate surgical procedure could be decided. Moreover, it was useful to decide the degree of rotation of the femoral head in rotational osteotomy. (author) 61 refs.

  7. CT of pancreatitis

    Energy Technology Data Exchange (ETDEWEB)

    Fukuda, Toshio (Nagasaki Univ. (Japan). School of Medicine)

    1990-09-01

    One hundred and two cases of acute and chronic pancreatitis were studied by computed tomography. Fluid collection was detected by CT in 45 cases, and the common extrapancreatic sites of involvement included the lesser sac (13 cases), anterior pararenal space (9 cases), transverse mesocolon (7 cases) and posterior pararenal space (5 cases). Ten cases of spontaneous resolution of pancreatic pseudocysts were encountered. Cystojejunostomy was done on 6 patients. A 4-to-6-weeks time interval has been currently accepted as necessary for pseudocyst wall maturation. However, the surgery was not possible in two patients in this series since the cyst wall was too thin. It is considered that the time over 3 months is required for surgical anastomosis of the cyst to the gastrointestinal tract. Pancreatic abscess has become the most common cause of death from pancreatitis. In this series pancreatic abscess occurred in 8 patients. Gas collection in the pancreas was observed in only one patient. In the other patients, pseudocysts had become infected and converted to abscesses. The CT number of 4 infected pseudocysts was less than 15 HU. Thus, it was not possible to distinguish infected from noninfected pseudocysts by CT. The author studied 9 patients with focal inflammatory mass of the pancreas with histologically proved severe fibrosis. All masses were small. Angiography showed occlusion or marked stenosis of the splenic vein in 3 cases. The postcontract CT (after intravenous bolus injection) in 7 cases of focal inflammatory mass demonstrated almost equal enhanced effect of the mass as compared with the adjacent normal pancreatic parenchyma. This finding is considered to be useful in distinguishing inflammatory mass from pancreatic carcinoma. (author).

  8. HIV-positive status and preservation of privacy: a recent decision from the Italian Data Protection Authority on the procedure of gathering personal patient data in the dental office.

    Science.gov (United States)

    Conti, Adelaide; Delbon, Paola; Laffranchi, Laura; Paganelli, Corrado; De Ferrari, Francesco

    2012-06-01

    The processing of sensitive information in the health field is subject to rigorous standards that guarantee the protection of information confidentiality. Recently, the Italian Data Protection Authority (Garante per la Protezione dei Dati Personali) stated their formal opinion on a standard procedure in dental offices involving the submission of a questionnaire that includes the patient's health status. HIV infection status is included on the form. The Authority has stated that all health data collection must be in accordance with the current Italian normative framework for personal data protection and respect the patient's freedom. This freedom allows the patient to decide, in a conscious and responsible way, whether to share health information with health personnel without experiencing any prejudice in the provision of healthcare requested. Moreover, data collection must be relevant and cannot exceed the principles of treatment goals with reference to the specific care of the concerned person. However, the need for recording information regarding HIV infection at the first appointment, regardless of the clinical intervention or therapeutic plan that needs to be conducted, should not alter the standard protection measures of the healthcare staff. In fact, these measures are adopted for every patient.

  9. CT of schistosomal calcification of the intestine

    Energy Technology Data Exchange (ETDEWEB)

    Fataar, S.; Bassiony, H.; Satyanath, S.; Rudwan, M.; Hebbar, G.; Khalifa, A.; Cherian, M.J.

    1985-01-01

    The spectrum of schistosomal colonic calcification on abdominal radiographs has been described. The appearance on computed tomography (CT) is equally distinctive and occurs with varying degrees of genitourinary calcification. The authors have experience in three cases with the appearance on CT of intestinal calcification due to schistosomiasis.

  10. CT metrizamide myelography in intrathoracic meningocele

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Ki Man; Woo, Seong Ku; Kim, Ok Bae; Suh, Soo Jhi [Keimyung University Medical College, Daegu (Korea, Republic of)

    1985-06-15

    Intrathoracic meningocele is a protrusion of the spinal meninges through an intervertebral foramen into the thoracic cavity. The majority occur in association with neurofibromatosis. The authors experienced a case of intrathoracic meningocele in 26 years old male patient associated with neurofibromatosis, and present conventional CT and CT metrizamide myelographic findings.

  11. Cervical diplomyelia revealed by computed tomography (CT)

    Energy Technology Data Exchange (ETDEWEB)

    Giordano, G.B.; Davidovits, P.; Cerisoli, M.; Giulioni, M.

    1982-05-01

    An unusual case of cervical diplomyelia diagnosed by Computed Tomography (CT) is reported. The usefulness of CT examination in the evaluation of spinal dysraphic defects is emphasized, though performed without CSF enhancement. Visualisation of spinal cord splitting in the absence of bony spicula allows the authors to differentiate between diplomyelia and diastematomyelia which have been often described by using both terms interchangeably.

  12. Author Guidelines

    OpenAIRE

    Istadi Istadi

    2011-01-01

    AUTHOR GUIDELINES Indian Journal of Community Health (IJCH) accepts only online submission of manuscript(s) by using Open Journal software (OJS) at http://www.iapsmupuk.org/journal/index.php/IJCH/login Online SubmissionsAlready have a Username/Password for Indian Journal of Community Health (IJCH)? GO TO LOGINNeed a Username/Password?GO TO REGISTRATIONNote: Registration and login are required to submit items online and to track the status of current submissions.Author GuidelinesIJCH strictly ...

  13. Utility of CT in branemark implant treatment

    Energy Technology Data Exchange (ETDEWEB)

    Yosue, Takashi; Takamori, Hitoshi; Nomura, Atsushi; Watanabe, Kaichi; Kamezawa, Hiroshi; Ohtani, Kazuo; Hiraga, Yasushi; Nakaya, Hiroshi (Nippon Dental Univ., Tokyo (Japan))

    1992-12-01

    Since the implant prognosis depends on the diagnosis, we use CT or tomography in addition to ordinary radiographic procedures to diagnose the propriety. Here we would like to present the diagnostic value of CT. We have performed CT examinations for 55 patients (66 jaws) up to the end of May 1992. In addition to the one-dimensional observation of CT images, we routinely used reconstructed CT images for the valuation of bone quality and quantity. The reconstructed CT images provided precise information regarding the width and height of the alveolar creat. The axial CT view provides more precise information on jawbone structure than panoramic radiographs. The CT number gives a quick estimate of jawbone quality. Because the image reconstruction requires only axial CT radiographs, metal restorations on the opposite jaw do not affect radiographic images. We have to take into account the partial volume effect, though. The disadvantages of CT use in diagnosis are an increase of time and of patient irradiation. The clarity of lower jaw CTs are especially sensitive to the patient movement. In conclusion, the CT radiographs are valuable in implant diagnosis. (author).

  14. Normal pediatric postmortem CT appearances

    Energy Technology Data Exchange (ETDEWEB)

    Klein, Willemijn M.; Bosboom, Dennis G.H.; Koopmanschap, Desiree H.J.L.M. [Radboud University Medical Center, Department of Radiology and Nuclear Medicine, Nijmegen (Netherlands); Nievelstein, Rutger A.J. [University Medical Center Utrecht, Department of Radiology, Utrecht (Netherlands); Nikkels, Peter G.J. [University Medical Center Utrecht, Department of Pathology, Utrecht (Netherlands); Rijn, Rick R. van [Academic Medical Center, Department of Radiology, Amsterdam (Netherlands)

    2015-04-01

    Postmortem radiology is a rapidly developing specialty that is increasingly used as an adjunct to or substitute for conventional autopsy. The goal is to find patterns of disease and possibly the cause of death. Postmortem CT images bring to light processes of decomposition most radiologists are unfamiliar with. These postmortem changes, such as the formation of gas and edema, should not be mistaken for pathological processes that occur in living persons. In this review we discuss the normal postmortem thoraco-abdominal changes and how these appear on CT images, as well as how to differentiate these findings from those of pathological processes. (orig.)

  15. Primitive neuroectodermal tumor: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Chang Soo; Eun, Tchoong Kie; Cha, Seong Sook; Han, Sang Suk; Chung, Duck Hwan [Inje College, Paik Hospital, Busan (Korea, Republic of)

    1987-04-15

    Primitive neuroectodermal tumor is a neoplasm of young individuals that occurs predominantly in the supratentorial compartment. Authors experienced three cases of primitive neuroectodermal tumor. On the brain CT scans, all three cases reveal the large, irregular, hyperdense mass lesions with calcifications and cystic or necrotic areas, and show dense heterogeneous contrast enhancement.

  16. CT of retrorenal fluid collections

    Energy Technology Data Exchange (ETDEWEB)

    Love, L.; Demos, T.C.; Posniak, H.

    1985-07-01

    Fluid collections dorsal to one or both kidneys are often observed on CT. Most of these collections are located in the posterior pararenal space, but occasionally fluid collections that do not originate in this space also occur. The authors review retrorenal fluid collections with explanations for their occurrence.

  17. Value of contrast-enhanced CT in detecting arterial injury with pelvic fracture

    Energy Technology Data Exchange (ETDEWEB)

    Ito, Keigo; Iwase, Toshiki; Ohshima, Takeshi; Tsuboi, Masaki; Sugiura, Sakae; Hara, Suguru [Okazaki City Hospital, Aichi (Japan)

    2000-04-01

    Computed tomography (CT) was used for detecting ongoing pelvic hemorrhage in patients with pelvic fracture, and for deciding an indication or transcatheter arterial embolization. The authors compared plane CT with contrast-enhanced CT to examine the value of contrast-enhanced CT in detecting arterial injury with pelvic fracture. The diagnosis of arterial injury was made by angiography. CT-determined hematoma was detected in 10 parts according to bleeding sites. Each hematoma was counted and compared with angiographic arterial injury. Contrast-enhanced CT was more useful than plane CT, but the hemorrhage sites determined by contrast-enhanced CT were not identical with those of angiographic arterial injuries. (author)

  18. CT urography

    Energy Technology Data Exchange (ETDEWEB)

    Korobkin, M. [Dept. of Radiology, Univ. of Michigan, Ann Arbor, MI (United States)

    2005-11-15

    With the advent of multidetector row CT scanners, evaluation of the urothelium of the entire urinary tract with high-resolution thin sections during a single breath-hold has become a reality. Multidetector CT urography (MDCTU) is a single examination that allows evaluation of potential urinary tract calculi, renal parenchymal masses, and both benign and malignant urothelial lesions. Initial results with this new technique are encouraging. Current investigations of MDCTU focus on methods to improve opacification and distension of the upper urinary tract - the collecting systems, pelvis, and ureters. The role of abdominal compression, infusion of saline and/or furosemide, and optimal time delay of excretory phase imaging is being explored. Upper tract urothelial malignancies, including small lesions less the 5 mmin diameter, can be detected with high sensitivity. Methods to reduce radiation exposure are being explored, including split-bolus contrast injection techniques that combine nephrographic and excretory phases into a single phase. It is likely that in the near future, radiological evaluation of significant unexplained hematuria or of known or prior urothelial malignancy will consist of a single examination - MDCTU. (orig.)

  19. CT findings of chronic eosinophilic pneumonia

    Energy Technology Data Exchange (ETDEWEB)

    Kigami, Yusuke; Nishizawa, Sadahiko; Kuroda, Yasumasa (Tenri Hospital, Nara (Japan)) (and others)

    1992-01-01

    CT scans in 11 cases of chronic eosinophilic pneumonia (CEP) were reviewed. Peripheral dense opacities suggesting air-space consolidation were the most peculiar findings seen in 9 patients on CT, but 7 on chest radiographs. Five patients showed broad plate-like opacities parallel to the pleura, which were the results of resolution from the periphery of the consolidation. Diffuse interstitial opacities suggesting alveolitis were the predominant finding in 3 patients, one of which also had peripheral air-space consolidation. Follow-up CT showed no residual abnormality except one who had DIP concomitant with CEP. CT scans are useful tool for both diagnosis and follow-up of CEP. (author).

  20. Some keys to reread authority.

    Directory of Open Access Journals (Sweden)

    Edgar Straehle

    2015-12-01

    Full Text Available This article vindicates a rereading of the concept of authority and tries to dissociate this concept from the concept of power in order to undo their identification and thereby the oblivion of the specific nature (or the history of authority. Besides, this rereading must not be confused with an apology of authority but with an exploration about this complicated and ambivalent category. The key point of this distinction lies in that authority, unlike power, depends not on itself but on the other person, the person who acknowledges another one as authority. Therefore, authority can be compatible with freedom and can appear as an exteriority of power, which undermines it or even becomes a counterpower. Hence the logical endeavours of power to monopolize and instrumentalize authority.

  1. AUTHOR GUIDELINES

    Directory of Open Access Journals (Sweden)

    Chief Editor

    2014-12-01

    Full Text Available AUTHOR GUIDELINESIndian Journal of Community Health (IJCH accepts only online submission of manuscript(s by using Open Journal software (OJS at http://www.iapsmupuk.org/journal/index.php/IJCH/loginOnline SubmissionsAlready have a Username/Password for Indian Journal of Community Health (IJCH? GO TO LOGINNeed a Username/Password?GO TO REGISTRATIONNote: Registration and login are required to submit items online and to track the status of current submissions.Author GuidelinesIJCH strictly adheres on the recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals as per the standard universal guidelines given by International Committee of Medical Journal Editors (ICMJE - Recommendations for Uniform Requirements for Manuscripts. Authors are requested to visit http://www.icmje.org/index.html before making online submission of their manuscript(s.SectionsEditorial:On issues of current public health needAbout 1000 – 1200 wordsReferences: 5 – 10 (PubMed - Citation preferredInvited Commentary:Brief, provocative, opinionated communicationsOn issues of current public health needMain Text: 750-1000 words excluding referencesReferences: 5 – 10 (PubMed - Citation preferredOriginal Article:Articles from Original ResearchStructured abstract: 250 wordsMain Text: 2500 - 3000 words, IMRD formatKey Words: 5 - 8References: 20 – 25 (PubMed - Citation preferredTables / Figures: 3 – 4*Certificate of clearance from respective Institutional Ethical Committee (IECReview Article:On subject of public health relevanceAbstract: 250 wordsMain Text: 2500 - 3000 wordsKey Words: 3 - 4References: 20 – 25 (PubMed - Citation preferredTables / Figures: 3 – 4Short Communication / Article:Short report of a research project / outbreakMain Text : 1000 – 1200 wordsReferences: 10 – 15 (PubMed - Citation preferredTable / Figure: 01*Certificate of clearance from respective Institutional Ethical Committee (IECReport from the field

  2. CT portography by multidetector helical CT. Comparison of three rendering models

    Energy Technology Data Exchange (ETDEWEB)

    Nakayama, Yoshiharu; Imuta, Masanori; Funama, Yoshinori; Kadota, Masataka; Utsunomiya, Daisuke; Shiraishi, Shinya; Hayashida, Yoshiko; Yamashita, Yasuyuki [Kumamoto Univ. (Japan). School of Medicine

    2002-12-01

    The purpose of this study was to assess the value of multidetector CT portography in visualizing varices and portosystemic collaterals in comparison with conventional portography, and to compare the visualizations obtained by three rendering models (volume rendering, VR; minimum intensity projection, MIP; and shaded surface display, SSD). A total of 46 patients with portal hypertension were examined by CT and conventional portography for evaluation of portosystemic collaterals. CT portography was performed by multidetector CT (MD-CT) scanner with a slice thickness of 2.5 mm and table feed of 7.5 mm. Three types of CT portographic models were generated and compared with transarterial portography. Among 46 patients, 48 collaterals were identified on CT transverse images, while 38 collaterals were detected on transarterial portography. Forty-four of 48 collaterals identified on CT transverse images were visualized with the MIP model, while 34 and 29 collaterals were visualized by the VR and SSD methods, respectively. The average CT value for the portal vein and varices was 198 HU with data acquisition of 50 sec after contrast material injection. CT portography by multidetector CT provides excellent images in the visualization of portosystemic collaterals. The images of collaterals produced by MD-CT are superior to those of transarterial portography. Among the three rendering techniques, MIP provides the best visualization of portosystemic collaterals. (author)

  3. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... a relatively short time, especially when compared to magnetic resonance imaging (MRI). CT scanning is painless, noninvasive and accurate. A ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

  4. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an implanted medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate ...

  5. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT Scanning of the Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, ... the body being studied. top of page How is the CT scan performed? The technologist begins by ...

  6. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... additional view capabilities. Modern CT scanners are so fast that they can scan through large sections of ... after the procedure? CT exams are generally painless, fast and easy. With multidetector CT, the amount of ...

  7. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... Professions Site Index A-Z Computed Tomography (CT) - Abdomen and Pelvis Computed tomography (CT) of the abdomen ... and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as a ...

  8. Abdominal and Pelvic CT

    Science.gov (United States)

    ... Professions Site Index A-Z Computed Tomography (CT) - Abdomen and Pelvis Computed tomography (CT) of the abdomen ... and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as a ...

  9. [Gallstone ileus. Abdominal CT usefulness].

    Science.gov (United States)

    Sukkarieh, F; Brasseur, P; Bissen, L

    2004-06-01

    The authors report the case of a 93-year old woman referred to the emergency department and presenting with an intestinal obstruction. Abdominal CT reveals a biliary ileus caused by the migration and the impaction of a 3 cm gallstone in the small bowel. Surgical treatment by enterolithotomy was successful. In over 90% of cases, gallstone ileus is a complication of cholelithiasis and accounts for 25% of intestinal obstruction in patients over 65 years. To reduce morbidity and mortality, early diagnosis and prompt treatment are essential. Abdominal CT-scan is the gold standard technique.

  10. Creativity, Personality and Intelligence.

    Science.gov (United States)

    Wakefield, James A., Jr.; Goad, Nancy A.

    1981-01-01

    Creativity is discussed in terms of H. Eysenck's personality theory. Creative persons are characterized by introversion, neuroticism, psychoticism, and moderate to high intelligence. The literature is reviewed on similarities and differences between creativity and pathology. (Author/DB)

  11. Creativity, Personality and Intelligence.

    Science.gov (United States)

    Wakefield, James A., Jr.; Goad, Nancy A.

    1981-01-01

    Creativity is discussed in terms of H. Eysenck's personality theory. Creative persons are characterized by introversion, neuroticism, psychoticism, and moderate to high intelligence. The literature is reviewed on similarities and differences between creativity and pathology. (Author/DB)

  12. CT finding of cryptococcal meningitis

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, Y.; Sato, H.; Ueda, M.; Ito, K.; Matsuoka, T. (Ohkawara Neurosurgical Hospital, Muroran (Japan))

    1981-08-01

    We have experienced 14 cases of cryptococcal meningitis in the last 6 years. Their neurological signs, CT findings, and prognoses were studied. They fall into three types: the brain-stem-encephalitis type, the cortical-encephalitis type, and the meningitis type, according to the clinical course. The first type (6 cases) revealed mainly cerebellar signs, eye-movement damage, and so forth. The second type (5 cases) demonstrated ''Personality'' changes, chiefly aphasia. The third type (5 cases) did not show any focal signs. Prognosis of the brain-stem-encephalitis type was very poor, with a 50% mortality rate. In the survivors, also, clinical signs did not disappear for a long time. Repeated CT was performed in 13 among the 14 cases; abnormal CT findings were revealed in 5 cases because of cryptococcal infection. Granuloma shadow and ventriculitis shadow were observed in 3 cases each. These abnormal findings disappeared upon treatment except in one case. The clinical signs are not completely related with the CT finding, but it is useful that the site which has been infiltrated by the cryptococcus can be observed. Abnormal CT findings were observed in the 4 cases of the brain-stem-encephalitis type among the 5 abnormal cases. It is very useful to know the severity of the condition.

  13. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Yunisrina Qismullah Yusuf

    2015-10-01

    Full Text Available Guidelines for Article Submission SiELE journal accepts articles on research and development in the field of teaching and learning of English, linguistics, educational development, policy and cultural studies in education.To be considered for publication, the article should be presented in the following system:First page: include a title page with the full title of the paper (must not exceed 16 words, the author(s’ name(s, affiliation(s, phone number(s and e-mail address of the corresponding author. A brief bio-data of the author(s (maximum of 100 words is provided in this page.Second page and subsequent page: Submissions should be between 4000-6000 (including abstract, table(s, figure(s and references in A4 size paper with margins as the following: top 3 cm, bottom 3 cm, right 2.5 cm and left 4 cm. The font is Times New Roman, size 12 and single spaced. The article should generally consist of the following sections: introduction, review of literature, method, findings, discussion and conclusion.Headings and subheadings should be presented as follows (provide a space between the headings and sub-headings. 1         INTRODUCTION1.1      Subheading of the Content 1.1.1   Subheading of the Content  For Tables, the title size is 12 and the content size is 10. Please number the tables subsequently throughout your article and the title is written above the table.For Figures, the title size is 12 and the content size (if any is 10. Please number the figures subsequently throughout your article and the title is written below the figure.The reference list should be arranged alphabetically following the guidelines of the Publication Manual of the American Psychological Association (5th ed.. See the following examples: Book: Ellis, R. (2003. Task-based language learning and teaching. Oxford: Oxford University Press.Internet source: Andrewes, S. (2003. Group work v. whole-class activities. Retrieved October 1, 2012 from http://www

  14. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Yunisrina Qismullah Yusuf

    2014-03-01

    Full Text Available Guidelines for Article Submission SiELE journal accepts articles on research and development in the field of teaching and learning of English, linguistics, educational development, policy and cultural studies in education.To be considered for publication, the article should be presented in the following system:First page: include a title page with the full title of the paper (must not exceed 16 words, the author(s’ name(s, affiliation(s, phone number(s and e-mail address of the corresponding author. A brief bio-data of the author(s (maximum of 100 words is provided in this page.Second page and subsequent page: Submissions should be between 4000-6000 (including abstract, table(s, figure(s and references in A4 size paper with margins as the following: top 3 cm, bottom 3 cm, right 2.5 cm and left 4 cm. The font is Times New Roman, size 12 and single spaced. The article should generally consist of the following sections: introduction, review of literature, method, findings, discussion and conclusion.Headings and subheadings should be presented as follows (provide a space between the headings and sub-headings. 1         INTRODUCTION1.1      Subheading of the content 1.1.1   Subheading of the content  For Tables, the title size is 12 and the content size is 10. Please number the tables subsequently throughout your article and the title is written above the table.For Figures, the title size is 12 and the content size (if any is 10. Please number the figures subsequently throughout your article and the title is written below the figure.The reference list should be arranged alphabetically following the guidelines of the Publication Manual of the American Psychological Association (5th ed.. See the following examples: Book: Ellis, R. (2003. Task-based language learning and teaching. Oxford: Oxford University Press.Internet source: Andrewes, S. (2003. Group work v. whole-class activities. Retrieved October 1, 2012 from http://www

  15. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Yunisrina Qismullah Yusuf

    2014-09-01

    Full Text Available Guidelines for Article Submission SiELE journal accepts articles on research and development in the field of teaching and learning of English, linguistics, educational development, policy and cultural studies in education.To be considered for publication, the article should be presented in the following system:First page: include a title page with the full title of the paper (must not exceed 16 words, the author(s’ name(s, affiliation(s, phone number(s and e-mail address of the corresponding author. A brief bio-data of the author(s (maximum of 100 words is provided in this page.Second page and subsequent page: Submissions should be between 4000-6000 (including abstract, table(s, figure(s and references in A4 size paper with margins as the following: top 3 cm, bottom 3 cm, right 2.5 cm and left 4 cm. The font is Times New Roman, size 12 and single spaced. The article should generally consist of the following sections: introduction, review of literature, method, findings, discussion and conclusion.Headings and subheadings should be presented as follows (provide a space between the headings and sub-headings. 1         INTRODUCTION1.1      Subheading of the content 1.1.1   Subheading of the content  For Tables, the title size is 12 and the content size is 10. Please number the tables subsequently throughout your article and the title is written above the table.For Figures, the title size is 12 and the content size (if any is 10. Please number the figures subsequently throughout your article and the title is written below the figure.The reference list should be arranged alphabetically following the guidelines of the Publication Manual of the American Psychological Association (5th ed.. See the following examples: Book: Ellis, R. (2003. Task-based language learning and teaching. Oxford: Oxford University Press.Internet source: Andrewes, S. (2003. Group work v. whole-class activities. Retrieved October 1, 2012 from http://www

  16. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Yunisrina Qismullah Yusuf

    2016-03-01

    Full Text Available Guidelines for Article Submission SiELE journal accepts articles on research and development in the field of teaching and learning of English, linguistics, educational development, policy and cultural studies in education. To be considered for publication, the article should be presented in the following system: First page: include a title page with the full title of the paper (must not exceed 16 words, the author(s’ name(s, affiliation(s, phone number(s and e-mail address of the corresponding author. A brief bio-data of the author(s (maximum of 100 words is provided in this page. Second p age and subsequent page: Submissions should be between 4000-6000 (including abstract, table(s, figure(s and references in A4 size paper with margins as the following: top 3 cm, bottom 3 cm, right 2.5 cm and left 4 cm. The font is Times New Roman, size 12 and single spaced. The article should generally consist of the following sections: introduction, review of literature, method, findings, discussion and conclusion. Headings and subheadings should be presented as follows (provide a space between the headings and sub-headings. 1 INTRODUCTION 1.1 Subheading of the Content 1.1.1 Subheading of the Content For Tables, the title size is 12 and the content size is 10. Please number the tables subsequently throughout your article and the title is written above the table. For Figures, the title size is 12 and the content size (if any is 10. Please number the figures subsequently throughout your article and the title is written below the figure. The reference list should be arranged alphabetically following the guidelines of the Publication Manual of the American Psychological Association (5th ed.. See the following examples:   Book: Ellis, R. (2003. Task-based language learning and teaching. Oxford: Oxford University Press. Internet source: Andrewes, S. (2003. Group work v. whole-class activities. Retrieved October 1, 2012 from http://www.teachingenglish.org

  17. Author Guidelines

    Directory of Open Access Journals (Sweden)

    Yunisrina Qismullah Yusuf

    2015-03-01

    Full Text Available Guidelines for Article Submission SiELE journal accepts articles on research and development in the field of teaching and learning of English, linguistics, educational development, policy and cultural studies in education. To be considered for publication, the article should be presented in the following system: First page: include a title page with the full title of the paper (must not exceed 16 words, the author(s’ name(s, affiliation(s, phone number(s and e-mail address of the corresponding author. A brief bio-data of the author(s (maximum of 100 words is provided in this page. Second page and subsequent page: Submissions should be between 4000-6000 (including abstract, table(s, figure(s and references in A4 size paper with margins as the following: top 3 cm, bottom 3 cm, right 2.5 cm and left 4 cm. The font is Times New Roman, size 12 and single spaced. The article should generally consist of the following sections: introduction, review of literature, method, findings, discussion and conclusion. Headings and subheadings should be presented as follows (provide a space between the headings and sub-headings. 1 INTRODUCTION 1.1 Subheading of the content 1.1.1 Subheading of the content For Tables, the title size is 12 and the content size is 10. Please number the tables subsequently throughout your article and the title is written above the table. For Figures, the title size is 12 and the content size (if any is 10. Please number the figures subsequently throughout your article and the title is written below the figure. The reference list should be arranged alphabetically following the guidelines of the Publication Manual of the American Psychological Association (5th ed.. See the following examples: Back Matter| 79 80 | STUDIES IN ENGLISH LANGUAGE AND EDUCATION, Volume 1, Number 1, March 2014 Book: Ellis, R. (2003. Task-based language learning and teaching. Oxford: Oxford University Press. Internet source: Andrewes, S. (2003. Group work v

  18. CT evaluation of thymus in myasthenia gravis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Guk Hee [Insung Hospital, Chuncheon (Korea, Republic of); Kang, Eun Young; Lee, Nam Joon; Suh, Won Hyuck [Korea University College of Medicine, Seoul (Korea, Republic of)

    1989-12-15

    The relationship between myasthenia gravis and the thymus was well establish and myasthenia gravis occurs in the presence of thymic hyperplasia or thymoma or occasionally in histologically normal thymus. Since not every patients with myasthenia gravis is a candidate for thymectomy, unless a thymoma is present, the differentiation of normal and hyperplastic thymus from thymoma becomes important. Authors reviewed retrospectively clinical records and chest CT scans of 18 patients with myasthenia gravis who underwent thymectomy during recent 5 years, to evaluate the role of CT scan. The results were as follows. 1 Of total 18 cases, 5 cases had normal thymus, 6 cases had thymic hyperplasia, 4 cases had benign thymoma and 3 cases had malignant thymoma. 2. Of 5 cases of normal thymus, no false positive cases were noted in CT scan. 3. Of 6 cases of thymic hyperplasia, CT findings were normal except 1 cases of thickened left thymic lobe. 4. Of 7 cases of thymoma, no false negative cases were noted in CT scan. 5. CT findings of benign thymoma were round or oval shaped, discrete, slightly enhancing soft tissue mass in anterior mediastinum. 6. CT findings of malignant thymoma were lobulated contoured, infiltrative, soft tissue mass lesion in anterior mediastinum with calcifications, pleural tumor implants, and SVC compression. CT yielded valuable information on differential diagnosis of thymoma, thymic hyperplasia and normal thymus. Also CT was a highly sensitive method in the detection of thymoma and determining the extent and invasiveness.

  19. Skills of Cognitive Therapy (SoCT): A New Measure of Patients' Comprehension and Use

    Science.gov (United States)

    Jarrett, Robin B.; Vittengl, Jeffrey R.; Clark, Lee Anna; Thase, Michael E.

    2011-01-01

    The authors describe the development and psychometric properties of a new measure called the Skills of Cognitive Therapy (SoCT) in depressed adults and their cognitive therapists. The 8-item SoCT assesses patients' understanding and use of basic cognitive therapy (CT) skills rated from the perspectives of both observers (SoCT-O; therapists in this…

  20. Skills of Cognitive Therapy (SoCT): A New Measure of Patients' Comprehension and Use

    Science.gov (United States)

    Jarrett, Robin B.; Vittengl, Jeffrey R.; Clark, Lee Anna; Thase, Michael E.

    2011-01-01

    The authors describe the development and psychometric properties of a new measure called the Skills of Cognitive Therapy (SoCT) in depressed adults and their cognitive therapists. The 8-item SoCT assesses patients' understanding and use of basic cognitive therapy (CT) skills rated from the perspectives of both observers (SoCT-O; therapists in this…

  1. Strategies for CT tissue segmentation for Monte Carlo calculations in nuclear medicine dosimetry

    DEFF Research Database (Denmark)

    Braad, Poul-Erik; Andersen, Thomas; Hansen, Søren Baarsgaard;

    2016-01-01

    Purpose: CT images are used for patient specific Monte Carlo treatment planning in radionuclide therapy. The authors investigated the impact of tissue classification, CT image segmentation, and CT errors on Monte Carlo calculated absorbed dose estimates in nuclear medicine. Methods: CT errors...... patient specific dosimetry in nuclear medicine. Accurate dosimetry was obtained with a 13-tissue ramp that included five different bone types....

  2. CT findings of osteogenesis imperfecta

    Energy Technology Data Exchange (ETDEWEB)

    Kojo, Nobuto; Otsuru, Katsuyasu; Lee, Soichi; Takagi, Shigeyuki; Shigemori, Minoru.

    1987-08-01

    Two cases of osteogenesis imperfecta found in one family (father and daughter) are reported, and the CT findings are described. Case 1 is a 58-year-old man who fell and struck his head at home on November 10, 1984. He was transferred to Omuta City Hospital when he became semicomatose and decerebrate posturing was noted. His family history revealed 8 persons with osteogenesis imperfecta. A skull X-ray film showed a large skull vault, many wormian bones at the lambdoid suture, platybasia, and a basilar impression. A CT scan demonstrated a right acute subdural hematoma, while the bone image showed well-developed mastoid air cells and a skull deformity characteristic of osteogenesis imperfecta. He had an emergency operation, and a 170-gr clot was successfully evacuated. A postoperative CT scan demonstrated brain atrophy, possibly present before head trauma. Case 2 is the daughter of Case 1 (a 27-year-old woman). She also showed characteristic neuroradiological manifestations on a plain skull film and on a CT scan. A basilar impression and platybasia were also demonstrated. In this report, the possible mechanism of the production of a traumatic acute subdural hematoma is also discussed.

  3. Cine CT technique for dynamic airway studies

    Energy Technology Data Exchange (ETDEWEB)

    Ell, S.R.; Jolles, H.; Keyes, W.D.; Galvin, J.R.

    1985-07-01

    The advent of cine CT scanning with its 50-msec data acquisition time promises a much wider range of dynamic CT studies. The authors describe a method for dynamic evaluation of the extrathoracic airway, which they believe has considerable potential application in nonfixed upper-airway disease, such as sleep apnea and stridor of unknown cause. Conventional CT is limited in such studies by long data acquisition time and can be used to study only prolonged maneuvers such as phonation. Fluoroscopy and digital subtraction studies are limited by relatively high radiation dose and inability to image all wall motions simultaneously.

  4. Compartment Syndrome After Varicose Vein Surgery Evidenced by CT Images.

    Science.gov (United States)

    Wang, Sheng-Min; Kim, Maru

    2016-03-01

    A 21-year-old man developed compartment syndrome after a varicose vein surgery. Because of a lack of appropriate diagnostic apparatus, it was not possible to measure calf pressure. The only diagnostic tool available was computed tomography (CT). With the aid of CT, faster diagnosis of the compartment syndrome was possible, leading to appropriate management. By providing unique CT images of a patient before and after having compartment syndrome and after a fasciotomy, this study could add valuable references for diagnosis of compartment syndrome using CT. © The Author(s) 2014.

  5. Clinical values of CT and dynamic CT in brain infarction

    Energy Technology Data Exchange (ETDEWEB)

    Lim, Soo Il; Jang, Do; Seo, Eun Joo; Sohn, Myung Hee; Choi, Ki Chul [Chonbuk National University College of Medicine, Jeonju (Korea, Republic of)

    1985-04-15

    With the advent of faster scan time and new computer program, a scanning technique called 'dynamic computed tomography' has become possible. Dynamic computed tomography consisted of performing multiple rapid sequence scans after injection of contrast material. The authors have evaluated the clinical usefulness of computed tomography and dynamic computed tomography of 93 patients with brain infarction and/or ischemia during the period of 17 months from April 1983 to August 1984 in Department of Radiology, Chonbuk National University Hospital. The results were as follows; 1. The age distribution ranged from 18 years to 78 years. Among them the most common age group was between 50 years and 59 years (40.9%). 2. The sites of brain infarction were cerebral lobes (63 cases,68), basal ganglia (15 cases, 16.1%) and multiple sites (6 cases, 6.4%). The common affected site was middle cerebral artery territories. 3. The contrast enhancement of acute infarction was noted in 14 cases (17.5%) which occurred commonly between 3 days and 2 weeks from ictus. 4. The patterns of time-density curve in brain infarction and/or ischemia were as follow: a. Depression of slow wash-in phase was 20 cases (59%). b. Lower peak concentration was 17 cases (50%). c. Lower and delayed peak concentration was 7 cases (21%). d. No definite peak concentration was 6 cases (18%). First three patterns of time-density curve were thought as relatively characteristic curve of brain infarction and/or ischemia. 5. Two cases that showed negative findings on precontrast CT scan appeared to be positive findings as hypodensity on postcontrast CT scan and were confirmed as brain infarction by dynamic CT. 6. The diagnostic entity of dynamic CT scan were as follows; a. large artery thrombotic infarction were 23 cases (58%). b. lacnar infarction were 6 cases (15%). c. ischemia were 5 cases (13%). d. normal were 5 cases (13%). In six cases of lacunar infarction which was double hypodensity on pre

  6. Enhancing interoperability in the GFZ ISDC ontology by embedding SKOS transformed NASA's GCMD keywords for describing and connecting entities and VIAF authority data for referencing personal and corporate names

    Science.gov (United States)

    Ritschel, B.; Neher, G.

    2011-12-01

    ISDC ontology integrated GCMD's controlled science and services keywords. In order to benefit from the hierarchical structure of GCDM's keywords, NASA's original files have been transformed into appropriate multi-language capable SKOS ontologies and afterwards integrated into the ISDC ontology. Now, existing information retrieval use cases can be extended using the SKOS vocabulary, such as e.g. broader, narrower or prefLabel. The problem of the global identification of persons and institutions within the ISDC ontology could be solved by the integration of authority data. From viaf.org provided URIs for personal and corporate names have been integrated as steady pillars into the ISDC ontology. Now persons and institutions can be unambiguously identified and further relations to publications or other information in the Web can be established. The successful educational and research activities combining geoscientists and information scientists will be extended into the areas of Open linked data and re-use of existing ontologies and controlled vocabularies.

  7. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... the scanner at one time such as with MRI. If an intravenous contrast material is used, you ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an ...

  8. Computed Tomography (CT) -- Head

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    Full Text Available ... of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT scanning of the head is typically ...

  9. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT of the sinuses is primarily used ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... limitations of CT Scanning of the Head? What is CT Scanning of the Head? Computed tomography, more ... the body being studied. top of page How is the procedure performed? The technologist begins by positioning ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... the limitations of CT of the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, ... the body being studied. top of page How is the procedure performed? The technologist begins by positioning ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... the cause of unexplained pain. CT scanning is fast, painless, noninvasive and accurate. In emergency cases, it ... additional view capabilities. Modern CT scanners are so fast that they can scan through large sections of ...

  16. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  17. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to Computed Tomography (CT) - ...

  18. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  20. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  1. CT Grading of Otosclerosis

    National Research Council Canada - National Science Library

    Lee, T.C; Aviv, R.I; Chen, J.M; Nedzelski, J.M; Fox, A.J; Symons, S.P

    2009-01-01

    ...: The CT grading system for otosclerosis was proposed by Symons and Fanning in 2005. The purpose of this study was to determine if this CT grading system has high interobserver and intraobserver agreement...

  2. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... Patient undergoing computed tomography (CT) scan View full size with caption Pediatric Content Some imaging tests and ...

  3. Computed Tomography (CT) -- Head

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    Full Text Available ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and ...

  4. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... CT scanner technique will be adjusted to their size and the area of interest to reduce the ... Patient undergoing computed tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and ...

  5. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... page How should I prepare for the CT scan? You should wear comfortable, loose-fitting clothing to ... studied. top of page How is the CT scan performed? The technologist begins by positioning you on ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  7. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT ... distinguished from one another on an x-ray film or CT electronic image. In a conventional x- ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits CT scanning is painless, noninvasive and accurate. ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits Viewing a CT scan, an experienced radiologist ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... top of page What are the benefits vs. risks? Benefits A CT scan is one of the ... CT scans should have no immediate side effects. Risks There is always a slight chance of cancer ...

  12. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Magnetic Resonance Imaging ( ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in ...

  14. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ... special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Ultrasound - Abdomen X- ...

  15. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... CT scanning is fast, painless, noninvasive and accurate. In emergency cases, it can reveal internal injuries and ... generated during a CT scan can be reformatted in multiple planes, and can even generate three-dimensional ...

  16. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide ... clicking and whirring sounds as the CT scanner's internal parts, not usually visible to you, revolve around ...

  17. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... the cause of unexplained pain. CT scanning is fast, painless, noninvasive and accurate. In emergency cases, it ... additional view capabilities. Modern CT scanners are so fast that they can scan through large sections of ...

  18. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... which may be causing hearing problems. determine whether inflammation or other changes are present in the paranasal ... CT scans . CT is not sensitive in detecting inflammation of the meninges —the membranes covering the brain. ...

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... a stroke. a stroke, especially with a new technique called Perfusion CT. brain tumors. enlarged brain cavities ( ... brain. assess aneurysms or arteriovenous malformations through a technique called CT angiography. For more information, see the ...

  20. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... to urinate; however, this is actually a contrast effect and subsides quickly. When you enter the CT ...

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... to urinate; however, this is actually a contrast effect and subsides quickly. When you enter the CT ...

  2. Cardiac CT Scan

    Science.gov (United States)

    ... combine these pictures to create a three-dimensional (3D) model of the whole heart. This imaging test ... findings from earlier chest x rays. Different CT scanners are used for different purposes. A multidetector CT ...

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... of the Head? What is CT Scanning of the Head? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT scanning of the head is typically ...

  4. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... the Sinuses? What is CT (Computed Tomography) of the Sinuses? Computed tomography, more commonly known as a ... of page What are some common uses of the procedure? CT of the sinuses is primarily used ...

  5. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  6. CT findings of thymic tumors

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Ho Son; Lee, Sang Jin; Hwang, Mi Soo; Cho, Kil Ho; Chang, Jae Chun; Park, Bok Hwan [College of Medicine, Yeungnam University, Daegu (Korea, Republic of)

    1991-05-15

    A CT scan can make accurate diagnoses of most thymic masses by assessing their size, shape, and internal architecture and is especially effective in detecting pleural implants, mediastinal involvement, and pulmonary parenchymal invasion in malignant thymoma. The authors analyzed the CT findings of 10 histologically-proven thymic masses from 1983 to 1990 in Yeungnam University Hospital. There were 10 cases of thymic masses in the anterior mediastinum consisting of 6 benign, 3 invasive thymomas, and one thymolipoma, while myasthenia gravis was associated with 2 cases of benign thymomas and with one case of invasive thymomas. The CT findings of the benign thymomas (6 cases) were well-defined, bordered, round-or oval-shaped masses with a well-preserved fat plane between the thymic mass and mediastinal great vessels, with no evidence of pleural implants and lung parenchymal invasion. The CT findings of the invasive thymomas (3 cases) were irregular, marginated lobular masses with obliteration of the fat plane between the thymic mass and surrounding great vessels, with evidence of local invasion such as extension to A-P window and mass effect to bronchus. Irregular pleural thickening due to pleural metastasis, multiple metastatic lung parenchymal nodules, and multiple mediastinal lymph node enlargement were also seen in the invasive thymomas. One case of thymolipoma showed an approximately 20cm-size, well-defined fat density mass containing internal septations.

  7. Utility of bolus dynamic CT for the detection of hypervascular malignant hepatic tumors. Mainly referring to the comparison with delayed phase contrast-enhanced CT

    Energy Technology Data Exchange (ETDEWEB)

    Matsuda, Hiromichi; Abe, Kimihiko [Tokyo Medical Coll. (Japan); Freeny, P.C.

    1996-03-01

    In order to analyze the usefulness of dynamic contrast-enhanced CT, 84 patients who had hepatocellular carcinoma or suspected hypervascular metastases were studied with conventional incremental dynamic CT (CID-CT) or double helical CT (DH-CT). Delayed phase contrast-enhanced CT studies were consecutively performed in all patients. Thirty-six of 84 patients had malignant hepatic neoplasms; six had hepatocellular carcinoma and 30 had metastatic tumors. At first, the detectability of hepatic lesions was evaluated with bolus dynamic CT and delayed phase CT. Dynamic CT has detected more lesions than delayed CT. Some hepatic lesions described as isodensity were missed on CID-CT. Therefore, delayed phase CT cannot be eliminated when CID-CT is performed. Secondly, hepatic lesion detectability with CID-CT was compared with that of DH-CT. DH-CT did not miss the hepatic lesions picked up by delayed phase CT and was expected to provide excellent detectability of hypervascular hepatic neoplasms. In addition, first helical CT showed most hepatic lesions as areas of obvious hyperdensity, while CID-CT did not show their correct vascularities. So-called hypervascular hepatic tumors, however, were not always hypervascular and were demonstrated as areas of iso-hypodensity even on initial helical scanning. Second helical CT was useful to detect these so-called hypervascular, but actually hypovascular lesions. In conclusion, dynamic CT was helpful in detecting hypervascular hepatic malignant neoplasms, and DH-CT was more accurate than-CID-CT for the detection of hepatic lesions and the evaluation of vascular lesion. (author).

  8. 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.)

  9. Usage of CT data in biomechanical research

    Science.gov (United States)

    Safonov, Roman A.; Golyadkina, Anastasiya A.; Kirillova, Irina V.; Kossovich, Leonid Y.

    2017-02-01

    Object of study: The investigation is focused on development of personalized medicine. The determination of mechanical properties of bone tissues based on in vivo data was considered. Methods: CT, MRI, natural experiments on versatile test machine Instron 5944, numerical experiments using Python programs. Results: The medical diagnostics methods, which allows determination of mechanical properties of bone tissues based on in vivo data. The series of experiments to define the values of mechanical parameters of bone tissues. For one and the same sample, computed tomography (CT), magnetic resonance imaging (MRI), ultrasonic investigations and mechanical experiments on single-column test machine Instron 5944 were carried out. The computer program for comparison of CT and MRI images was created. The grayscale values in the same points of the samples were determined on both CT and MRI images. The Haunsfield grayscale values were used to determine rigidity (Young module) and tensile strength of the samples. The obtained data was compared to natural experiments results for verification.

  10. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  11. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  12. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much like other x-ray examinations. Different ... scanners to obtain multiple slices in a single rotation. These scanners, called multislice CT or multidetector CT, ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... a sudden severe headache. a blood clot or bleeding within the brain shortly after a patient exhibits symptoms of a stroke. a ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body after a CT examination. X-rays used in CT ...

  14. CT angiography and CT perfusion in acute ischemic stroke

    NARCIS (Netherlands)

    Seeters, T. van

    2016-01-01

    CT angiography and CT perfusion are used in patients with acute ischemic stroke for diagnostic purposes and to select patients for treatment. In this thesis, the reproducibility of CT angiography and CT perfusion is examined, the additional value of CT angiography and CT perfusion for stroke outcome

  15. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... News Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) ... are the limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as a ...

  16. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... CT Angiography Video: Myelography Video: CT of the Heart Video: Radioiodine I-131 Therapy Radiology and You ... CT Angiography Video: Myelography Video: CT of the Heart Video: Radioiodine I-131 Therapy Radiology and You ...

  17. Instructions to Authors

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Cellular & Molecular Immunology (CMI) is the official publication of the Chinese Society of Immunology. The Journal is published bimonthly in English and edited at the University of Science & Technology of China (USTC). Papers in all areas of cellular and molecular immunology are welcome including immunobiology, comparative immunology, immunogenetics, neuroimmunology, immunopathology, immunopharmacology, tumor immunology, infection immunology, clinical immunology, transplantation immunology, veterinary immunology and immunological techniques. All international immunologists and immunologyrelated investigators will find CMI suitable for their publications. CMI publishes articles and brief reports for original investigations. Reviews and minireviews are also accepted from authors on request by the editorial board of the journal. A paper is submitted to CMI with the understanding that it has not been and will not be published elsewhere. The submission must have the approval of all of the authors. The preferred medium of final submission to the accepting editor is on computer disk with the accompanying reviewed and revised manuscript (see'electronic manuscripts' below). Publication in CMI is taken to imply the authors' willingness to comply with reasonable requests to supply reagents such as recombinant clones and monoclonal antibodies, and sequence data in electronic form to persons lacking access to computer databases.

  18. Instructions to Authors

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Cellular & Molecular Immunology (CMI) is the official publication of the Chinese Society of Immunology. The Journal is published bimonthly in English and edited at the University of Science & Technology of China (USTC). Papers in all areas of cellular and molecular immunology are welcome including immunobiology, comparative immunology, immunogenetics, neuroimmunology, immunopathology, immunopharmacology, tumor immunology, infection immunology, clinical immunology, transplantation immunology, veterinary immunology and immunological techniques. All international immunologists and irnmunologyrelated investigators will find CMI suitable for their publications. CMI publishes articles and brief reports for original investigations. Reviews and minireviews are also accepted from authors on request by the editorial board of the journal A paper is submitted to CMI with the understanding that it has not been and will not be published elsewhere. The submission must have the approval of all of the authors. The preferred medium of final submission to the accepting editor is on computer disk with the accompanying reviewed and revised manuscript (see 'electronic manuscripts' below). Publication in CMI is taken to imply the authors' willingness to comply with reasonable requests to supply reagents such as recombinant clones and monoclonal antibodies, and sequence data in electronic form to persons lacking access to computer databases.

  19. Thoracic textilomas: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Dianne Melo; Zanetti, Glaucia; Araujo Neto, Cesar Augusto; Nobre, Luiz Felipe; Meirelles, Gustavo de Souza Portes; Silva, Jorge Luiz Pereira e; Guimaraes, Marcos Duarte; Escuissato, Dante Luiz; Souza Junior, Arthur Soares; Hochhegger, Bruno; Marchiori, Edson, E-mail: edmarchiori@gmail.com [Hospital Universitario Antonio Pedro (HUAP/UFF), Niteroi, RJ (Brazil)

    2014-09-15

    Objective: the aim of this study was to analyze chest CT scans of patients with thoracic textiloma. Methods: this was a retrospective study of 16 patients (11 men and 5 women) with surgically confirmed thoracic textiloma. The chest CT scans of those patients were evaluated by two independent observers, and discordant results were resolved by consensus. Results: the majority (62.5%) of the textilomas were caused by previous heart surgery. The most common symptoms were chest pain (in 68.75%) and cough (in 56.25%). In all cases, the main tomographic finding was a mass with regular contours and borders that were well-defined or partially defined. Half of the textilomas occurred in the right hemithorax and half occurred in the left. The majority (56.25%) were located in the lower third of the lung. The diameter of the mass was ≤ 10 cm in 10 cases (62.5%) and > 10 cm in the remaining 6 cases (37.5%). Most (81.25%) of the textilomas were heterogeneous in density, with signs of calcification, gas, radiopaque marker, or sponge-like material. Peripheral expansion of the mass was observed in 12 (92.3%) of the 13 patients in whom a contrast agent was used. Intraoperatively, pleural involvement was observed in 14 cases (87.5%) and pericardial involvement was observed in 2 (12.5%). Conclusions: it is important to recognize the main tomographic aspects of thoracic textilomas in order to include this possibility in the differential diagnosis of chest pain and cough in patients with a history of heart or thoracic surgery, thus promoting the early identification and treatment of this postoperative complication. (author)

  20. Marketing cardiac CT programs.

    Science.gov (United States)

    Scott, Jason

    2010-01-01

    There are two components of cardiac CT discussed in this article: coronary artery calcium scoring (CACS) and coronary computed tomography angiography (CCTA).The distinctive advantages of each CT examination are outlined. In order to ensure a successful cardiac CT program, it is imperative that imaging facilities market their cardiac CT practices effectively in order to gain a competitive advantage in this valuable market share. If patients receive quality care by competent individuals, they are more likely to recommend the facility's cardiac CT program. Satisfied patients will also be more willing to come back for any further testing.

  1. Perceived Parental Authority: Reasonable and Unreasonable.

    Science.gov (United States)

    Harris, Irving D.; Howard, Kenneth I.

    1981-01-01

    This questionnaire study investigated personality phenomena in adolescents who described their parents along two dimensions: exercise of family authority and reasonableness. The main area of analysis concerned the extent to which male and female adolescents react differently to reasonable or unreasonable paternal and maternal authority. (Author/GK)

  2. Perceived Parental Authority: Reasonable and Unreasonable.

    Science.gov (United States)

    Harris, Irving D.; Howard, Kenneth I.

    1981-01-01

    This questionnaire study investigated personality phenomena in adolescents who described their parents along two dimensions: exercise of family authority and reasonableness. The main area of analysis concerned the extent to which male and female adolescents react differently to reasonable or unreasonable paternal and maternal authority. (Author/GK)

  3. CT diagnosis of hyperdense intracranial neoplasms. Review of the literature

    Energy Technology Data Exchange (ETDEWEB)

    Ishikura, Reiichi; Ando, Kumiko; Tominaga, Satoru; Nakao, Norio [Hyogo College of Medicine, Nishinomiya (Japan); Ikeda, Jouta; Takemura, Yuriko; Morikawa, Tsutomu

    1999-03-01

    In contrast to typical astrocytic tumors that show hypodense areas on computed tomographic images, some intracranial tumors show hyperdense areas on CT images. The major reasons for hyperdensity on CT images are hypercellular lesions, intratumoral calcification, and intratumoral hemorrhage. Malignant lymphomas, germinomas, and medulloblastomas show homogenous hyperdensity on CT images because of their hypercellularity. Tumorous lesions such as subependymal giant cell astrocytomas, oligodendrogliomas, ependymomas, central neurocytomas, craniopharyngiomas, and meningiomas often present with hyperdense calcified lesions on CT images. Intratumoral hemorrhage also causes hyperdensity on CT images, and is often associated with metastatic brain tumors, glioblastomas, pituitary adenomas, and rarely with any of the other intracranial tumors. Although magnetic resonance imaging is now the major diagnostic tool for diseases of the central nervous system, the first imaging studies for patients with neurologic symptoms are still CT scans. Hyperdense areas on CT images are a clue to making an accurate diagnosis of intracranial neoplasms. (author)

  4. Syntax of Emotional Narratives of Persons Diagnosed with Antisocial Personality

    Science.gov (United States)

    Gawda, Barbara

    2010-01-01

    The aim of this study was to show some specificity of syntax of narratives created by persons diagnosed with antisocial personality. The author attempted to verify and supplement information that persons with antisocial personality have an incapacity for emotional language. Scores of 60 prisoners with high antisocial tendencies, 40 prisoners with…

  5. Simple evaluation of CT findings in the paranasal sinuses for chronic sinusitis

    Energy Technology Data Exchange (ETDEWEB)

    Miyazaki, Makoto [Saiseikai Shiga Hospital, Ritto (Japan); Dejima, Kenji; Hama, Takemitsu; Ishizaka, Shigeyasu; Yasuda, Shigenobu; Fukushima, Kazuto; Murakami, Yasushi; Hisa, Yasuo

    2000-02-01

    The CT scores and scoring for improvement based on them, which we proposed previously, is a simple and highly reproducible method of evaluation of sinus units before and after an operation for chronic sinusitis. We compared this evaluation method with the results of quantitative assay and showed its advantages and disadvantages. The subjects were 258 sinuses in patients who underwent endonasal sinus surgery (ESS) in the department of otolaryngology, Kyoto Prefectural University of Medicine Hospital from April 1996 to April 1997. The subjects were evaluated according to the following 4 grades negligible shadow in the paranasal sinus CT scored 0, less than 50% shadow scored 1, more than 50% of shadow scored 2, and mostly filled with shadow scored 3. Furthermore, the preoperative and postoperative CT scores were compared and the rate of improvement was rated in the following 3 grades: score 0 for unchanged or aggravated subjects, score 1 for subjects showing improved CT score by 1 grade, and score 2 for those showing improved CT score by 2 grades or a postoperative CT score of 0. Quantitative image analysis was input into a personal computer and the ratio occupied by the shadow was calculated, as the shadow ratio. While some discrepancies were seen in parts in the comparison of the quantitative image analysis and CT scores as the former captures minute shadows, a positive correlation was obtained overall. Attention is needed to accurately evaluate small paranasal sinuses such as the frontal sinus, and small amounts of shadow, which are areas where errors may occur. A satisfactory correlation was obtained between the score for the improvement rate and the difference in the shadow ratios before and after surgery. The CT scores and the scores for the improvement rate showed no difference from the results of other evaluation methods reported in the past, and evaluation of similar precision was possible. It was thought that this simple evaluation method of CT findings in

  6. Monte Carlo dosimetry in CT; Dosimetria Monte Carlo en CT

    Energy Technology Data Exchange (ETDEWEB)

    Miro Herrero, R.

    2015-07-01

    Computed tomography explorations ITC) contribute a high percentage of the total radiation dose absorbed by the population exposed to medical examination. Since the number of CT scans performed has grown exponentially in recent years, concerns about their long-term effects on the patient's health has also increased. However, in order to establish a relationship between the absorbed dose and its side effects, it is necessary to perform a calculation accurate dosimetry radiation protection international institutions have confirmed that the best indicator of risk is dose to organs. (Author)

  7. A Perspective on "Speaking Personally."

    Science.gov (United States)

    Wilbur, Michael P.

    1994-01-01

    Focuses on decision of "Journal of Counseling and Development" to discontinue "Personally Speaking" section of the journal. Author discusses his own personal/professional history and explains importance of being able to speak personally and honestly about ourselves, supporting others' ability to speak personally and honestly about themselves, and…

  8. Diagnosis and quantitative estimation of pulmonary congestion or edema by pulmonary CT numbers

    Energy Technology Data Exchange (ETDEWEB)

    Kato, Shiro; Nakamoto, Takaaki

    1987-12-01

    Pulmonary computed tomography (CT) was performed in 25 patients with left heart failure and 10 healthy persons to diagnose pulmonary congestion or edema associated with left heart failure. In an analysis of histogram for pulmonary CT numbers obtained from CT scans, CT numbers indicating pulmonary edema were defined as -650 to -750 H.U. This allowed pulmonary edema to be quantitatively estimated early when abnormal findings were not available on chest X-ray film or pulmonary circulation studies. Histograms for CT numbers could be displayed by colors on CT scans. (Namekawa, K.).

  9. CT-arteriography of pancreas

    Energy Technology Data Exchange (ETDEWEB)

    Yoshikawa, Jun; Matsui, Osamu; Kitagawa, Kiyohide; Kamimura, Ryoichi; Kadoya, Masumi; Suzuki, Masayuki; Takashima, Tutomu

    1985-01-01

    To evaluate diagnostic effectiveness of CT-arteriography (CTA) in pancreatic disease, the pictures of pancreatic CTA were analysed in 50 cases without pancreatic disease. In the pancreatic body, irregular spotty stain was seen in 15 out of 50 cases(30%). Especially, in patients who had dorsal pancreatic artery arising from superior mesenteric artery, this stain was seen in 9 out of 13 cases(69%) and its mechanism was considered to be double blood supply both from celiac artery and superior mesenteric artery. As a consequence, we think that CTA of pancreas is unusefull in diagnosis of pancreatic insulinomas or carcinomas. (author).

  10. PET/CT Artifacts

    OpenAIRE

    Blodgett, Todd M.; Mehta, Ajeet S.; Mehta, Amar S.; Laymon, Charles M; Carney, Jonathan; Townsend, David W.

    2011-01-01

    There are several artifacts encountered in PET/CT imaging, including attenuation correction (AC) artifacts associated with using CT for attenuation correction. Several artifacts can mimic a 2-deoxy-2-[18F] fluoro-D-glucose (FDG) avid malignant lesions and therefore recognition of these artifacts is clinically relevant. Our goal was to identify and characterize these artifacts and also discuss some protocol variables that may affect image quality in PET/CT.

  11. Female patients dosimetry in brain exams with PET/CT scan for diagnosis of Mild Cognitive Impairment (MCI)

    Energy Technology Data Exchange (ETDEWEB)

    Santana, P.C.; Mamede, M.; Carvalho, F.M.V., E-mail: pridili@gmail.com [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil); Mourao, A.P., E-mail: apratabhz@gmail.com [Centro Federal de Educacao Tecnologica, Belo Horionte, MG (Brazil). Dept. de Engenharia Eletrica; Oliveira, P.M.C.; Silva, T.A. da, E-mail: pmco@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2013-07-01

    Dementia affects over 35 million people worldwide, with strong personal, social and financial impacts. Alzheimer's disease is the most common form of dementia, accounting for 60-70% of cases, affecting mostly females. Recent technological innovations, using methods of anatomical and functional neuroimaging, with particular emphasis on PET / CT (positron emission tomography with computed tomography associated), have shown excellent prospects for early diagnosis of Alzheimer's disease represented by Mild Cognitive Impairment (MCI). The use of PET / CT helps diagnosis, but the patients effective dose is higher and directly dependent on the radiopharmaceutical activity and the computed tomographic (CT) protocol used. The aim of this study was evaluated the organs absorbed doses and effective doses in 59 female patients undergoing the PET/CT diagnostic technique. For the measurements of radiation levels from the CT was used TLD100 (LiF:Mg, Ti) Rod detectors inserted in Alderson Randon ® anthropomorphic phantom, which simulates a female pattern, of 155 cm and weight 50 kg, subjected to the same clinical protocol of acquiring patients images. The effective dose resulting from the radiopharmaceutical injected activity was estimated by ICRP106 model using the weight of the patients undergoing to the procedure. The average effective dose due was (7.65 ± 2.22) mSv. The effective dose contribution to the brain and the thyroid due to CT were (2.21 ± 0.38) and (0.72 ± 0.14) mSv, respectively. The use of CT optimized protocols can assist in reducing the dose in this type of procedure. (author)

  12. CT findings of orbital blow-out fracture

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Jeong Yeol; Park, Jun Kyun; Lim, Woo Young; Rho, Kwang Suk; Ko, Yong Suk; Kim, Young Chul; Oh, Jae Hee [Chosun Univ., Kwangju (Korea, Republic of). Coll. of Medicine

    1998-02-01

    To evaluate the usefulness and radiologic findings of CT in the diagnosis of orbital blow-out fracture. Forty-four patients with orbital blow-out fractures diagnosed by clinical findings and CT were evaluated retrospectively. On CT images, we evaluated the site and frequency of fracture, herniation of orbital fat, extraocular muscle abnormality, intraorbital hematoma, and intrasinus hemorrhage. CT is a useful diagnostic modality for the evaluation of orbital blow-out fracture and associated soft tissue abnormalities. (author). 16 refs., 1 tab., 2 figs.

  13. Usefulness and problems of three-dimensional CT (3D-CT) in the neurosurgical patients

    Energy Technology Data Exchange (ETDEWEB)

    Terada, Kousaku; Tajitsu, Kenichiro; Ichitsubo, Hidenori [Kaseda Hospital, Kagoshima (Japan); Moriya, Nobuhide; Kadota, Koki; Asakura, Tetsuhiko

    1997-11-01

    Helical CT scanning is a new technique that can uninterruptedly generate a volume of data. The data thus acquired with or without contrast medium is reconstructed for three-dimensional CT (3D-CT) or three-dimensional CT angiography (3D-CTA). The authors have studied 36 aneurysms, 11 aterosclerotic lesions, 16 tumors and 14 traumatic lesions in more than 60 patients with 3D-CT or 3D-CTA. Aneurysm is visualized clearly on 3D-CTA. The ability to rotate images in all planes aids in showing the aneurysm neck and dome, parent artery and surrounding bony structures. 3D-CTA can assist the surgeon in the approach to the aneurysm. Imaging of the infraclinoid portion of the internal carotid artery may be inadequate with 3D-CTA because of contrast enhancement of the cavernous sinus and the anterior portion of the lesser sphenoid wing. Stenosis or occlusion of the circle of Willis and the common carotid artery bifurcation is well identified on 3D-CTA. It is noted that 3D-CTA delineates inaccurately stenosis severity because of partial volume effects, the threshold level and the timing of scanning. Well-enhanced brain tumors such as meningioma are demonstrated clearly. The relationship of the tumor to surrounding major arteries and bony structures is well defined on enhanced 3D-CT. Marked transposition of skull fracture by head trauma is shown distinctly on 3D-CT. In conclusion, although this technique requires further development and clinical evaluation, the authors` experience with 3D-CT and 3D-CTA suggests that this may become a valuable tool in the diagnosis of neurosurgical patients. (author)

  14. Environmental Radiation Monitoring in PET-CT facilities; Vigilancia radiologica ambiental en instalaciones de PET-CT

    Energy Technology Data Exchange (ETDEWEB)

    Casa, M. A. de la; Gilarranz, R.; Adaimi, P.; Martinez, L. C.; Ruiz, M. A.; Rot, M. J.; Clemente, F.; Milanes, A.; Delgado, J. M.; Manzanas, M. J.

    2012-11-01

    We have made radiological surveillance measures in three PET-CT facilities during thirteen months. The results of our measures confirm the validity of the shielding calculation and safety studies performed in each one of the facilities. (Author) 3 refs.

  15. Doses metrics and patient age in CT.

    Science.gov (United States)

    Huda, Walter; Tipnis, Sameer V

    2016-03-01

    The aim of this study was to investigate how effective dose and size-specific dose estimate (SSDE) change with patient age (size) for routine head and abdominal/pelvic CT examinations. Heads and abdomens of patients were modelled as a mass-equivalent cylinder of water corresponding to the patient 'effective diameter'. Head CT scans were performed at CTDIvol(S) of 40 mGy, and abdominal CT scans were performed at CTDIvol(L) of 10 mGy. Values of SSDE were obtained using conversion factors in AAPM Task Group Report 204. Age-specific scan lengths for head and abdominal CT scans obtained from the authors' clinical practice were used to estimate the dose-length product for each CT examination. Effective doses were calculated from previously published age- and sex-specific E/DLP conversion factors, based on ICRP 103 organ-weighting factors. For head CT examinations, the scan length increased from 15 cm in a newborn to 20 cm in adults, and for an abdominal/pelvic CT, the scan length increased from 20 cm in a newborn to 45 cm in adults. For head CT scans, SSDE ranged from 37.2 mGy in adults to 48.8 mGy in a newborn, an increase of 31 %. The corresponding head CT effective doses range from 1.4 mSv in adults to 5.2 mSv in a newborn, an increase of 270 %. For abdomen CT scans, SSDE ranged from 13.7 mGy in adults to 23.0 mGy in a newborn, an increase of 68 %. The corresponding abdominal CT effective doses ranged from 6.3 mSv in adults to 15.4 mSv in a newborn, an increase of 140 %. SSDE increases much less than effective dose in paediatric patients compared with adults because it does not account for scan length or scattered radiation. Size- and age-specific effective doses better quantify the total radiation received by patients in CT by explicitly accounting for all organ doses, as well as their relative radio sensitivity.

  16. CT findings of early acute cerebral infarction

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Tae Hoon; Choi, Woo Suk; Ryu, Kyung Nam [Kyung Hee University Hospital, Seoul (Korea, Republic of)

    1992-11-15

    The CT findings of the acute cerebral infarction are well known. However the CT findings of early stroke within 24 hours of the onset have not been sufficiently reported. The purpose of this study is to evaluate early acute cerebral infarction on CT within 24 hours after ictus. The early and accurate CT diagnosis could lead to the appropriate therapy and improved outcome of the patients. Authors retrospectively analyzed 16 patients with early acute cerebral infarction. Acute cerebral infarction was confirmed by follow-up CT in 11 patients, SPECT in 4 patients, and MRI in 1 patient. The CT findings of early acute cerebral infarction include effacement of cortical sulci or cistern (n = 16, 100%), hyperattenuation of MCA (n = 3), obscuration of lentiform nucleus (n = 6), loss of insular ribbon (n = 6) and subtle low density in hemisphere (n = 5). The most frequent finding was effacement of cortical sulci in our study, and it was thought to be the most important sign of early acute cerebral infarction.

  17. CT screening of vertebrarterial circulatory disorder

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Shigeru; Toyoda, Keiko; Moriyama, Hiroshi [Jikei Univ., Tokyo (Japan). School of Medicine

    2001-09-01

    The frequency of MR angiography (MRA) used to diagnose vertebrobasiliar insufficiency appears high. Findings of abnormality by MRA show cases with maldescription of hemivertebral artery. In such cases, it is unclear whether these are due to anaplasia of the vertebral artery or to the existence of morbid constriction, thus requiring confirmation by a vertebral arteriography (VAG). We observe the vascular morphology of vertebral artery by Computed tomography (CT) scanning for screening circulatory disorders. In photography and CT scan reading, the region was severally photographed between foramen magnum and aortic arch by plain CT and contrast CT at a slice of 5 mm. The constrictive region of the vertebral artery was estimated by comparing plain and contrast CT. Subjects were 34 clinical cases of vascular maldescription in the vertebrobasilar artery, nearly no blood vessel description, or blood vessel winding or inclination. We determined the constrictive morbid state of the vertebral or subclavian artery and cervical vertebra deformity. In findings of maldescription by MRA, it was suggested that discrimination is feasible to a certain degree, whether the vertebral artery has a morbid constrictive region or due to anaplasia. Our results suggest that screening by CT scanning may be more efficient than that by MRA. (author)

  18. CT of Gastric Emergencies.

    Science.gov (United States)

    Guniganti, Preethi; Bradenham, Courtney H; Raptis, Constantine; Menias, Christine O; Mellnick, Vincent M

    2015-01-01

    Abdominal pain, nausea, and vomiting are common presenting symptoms among adult patients seeking care in the emergency department, and, with the increased use of computed tomography (CT) to image patients with these complaints, radiologists will more frequently encounter a variety of emergent gastric pathologic conditions on CT studies. Familiarity with the CT appearance of emergent gastric conditions is important, as the clinical presentation is often nonspecific and the radiologist may be the first to recognize gastric disease as the cause of a patient's symptoms. Although endoscopy and barium fluoroscopy remain important tools for evaluating patients with suspected gastric disease in the outpatient setting, compared with CT these modalities enable less comprehensive evaluation of patients with nonspecific complaints and are less readily available in the acute setting. Endoscopy is also more invasive than CT and has greater potential risks. Although the mucosal detail of CT is relatively poor compared with barium fluoroscopy or endoscopy, CT can be used with the appropriate imaging protocols to identify inflammatory conditions of the stomach ranging from gastritis to peptic ulcer disease. In addition, CT can readily demonstrate the various complications of gastric disease, including perforation, obstruction, and hemorrhage, which may direct further clinical, endoscopic, or surgical management. We will review the normal anatomy of the stomach and discuss emergent gastric disease with a focus on the usual clinical presentation, typical imaging appearance, and differentiating features, as well as potential imaging pitfalls.

  19. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... of data to create two-dimensional cross-sectional images of your body, which are then displayed on a monitor. CT ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... the best way to see if treatment is working or if a finding is stable or changed over time. top of page What are the benefits vs. risks? Benefits A CT scan is one of the safest means of studying the sinuses. CT is the most reliable imaging ...

  3. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... you have a hard time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. If an ...

  4. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... you have a hard time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer you some medication to help you tolerate the CT scanning procedure. If an ...

  5. Computed Tomography (CT) -- Head

    Science.gov (United States)

    ... of a stroke. a stroke, especially with a new technique called Perfusion CT. brain tumors. enlarged brain ... be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... does the equipment look like? The CT scanner is typically a ...

  6. CT of tracheal agenesis

    Energy Technology Data Exchange (ETDEWEB)

    Strouse, Peter J.; Hernandez, Ramiro J. [C.S. Mott Children' s Hospital, Department of Radiology, Ann Arbor, MI (United States); Newman, Beverley [Children' s Hospital of Pittsburgh, PA (United States). Department of Pediatric Radiology; Afshani, Ehsan [Children' s Hospital of Buffalo, NY (United States). Departments of Radiology and Pediatrics; Bommaraju, Mahesh [Women' s and Children' s Hospital of Buffalo, Division of Neonatology, University Pediatrics Associates, Buffalo, NY (United States)

    2006-09-15

    Tracheal agenesis is a rare and usually lethal anomaly. In the past, opaque contrast medium was injected via the esophagus to demonstrate the anatomy. To demonstrate the utility of helical and multidetector CT in delineating the aberrant anatomy in newborns with tracheal agenesis. Four newborns with tracheal agenesis were identified from three institutions. Imaging studies and medical records were reviewed. Each child was imaged with chest radiography. One child was imaged on a single-detector helical CT scanner and the other three on multidetector scanners. Helical and multidetector CT with 2D and 3D reconstructions clearly delineated the aberrant tracheobronchial and esophageal anatomy in each infant. Minimum intensity projection reformatted CT images were particularly helpful. One infant each had type I and type II tracheal agenesis. Two infants had type III tracheal agenesis. All four infants died. CT is a useful tool for delineating the aberrant anatomy of newborns with tracheal agenesis and thus helps in making rational clinical decisions. (orig.)

  7. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... CT is less sensitive to patient movement than MRI. CT can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides real-time imaging, making it ...

  8. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) is ... a CT scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  9. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... of page What are some common uses of the procedure? CT is used to help diagnose a ... the CT examination. top of page What does the equipment look like? The CT scanner is typically ...

  10. Children's (Pediatric) CT (Computed Tomography)

    Science.gov (United States)

    ... Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) is ... a CT scan. View full size with caption Pediatric Content Some imaging tests and treatments have special ...

  11. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ...

  12. Thyroid lymphography-computed tomography (TLG-CT)

    Energy Technology Data Exchange (ETDEWEB)

    Matsuyama, Koukichi (Kansai Medical Univ., Moriguchi, Osaka (Japan))

    1992-10-01

    There are several useful diagnostic examinations for thyroid disease. The diagnostic value of CT in thyroid disease is still controvertial, although CT has become a routine clinical examination, since the plain CT does not always identify tumors accurately. In this paper, we introduce for the first time thyroid lymphography-computed tomography (TLG-CT) which may improve the diagnostic value of CT. The technique combines CT with thyroid lymphography. We performed TLG-CT in 92 patients with various thyroid diseases and 20 normal controls and classified the radiological features into the following 6 types: entire (normal thyroid); moth-eaten (Hashimoto's thyroiditis); defect (follicular adenoma and adenomatous goiter); lobate (papillary carcinoma); localized (various thyroid diseases); and extrathyroid defect (parathyroid tumor). In addition, we examined the relationship between TLG-CT type and the macroscopic appearance of the cut surface of the thyroid and lymph node metastasis in 20 patients with papillary carcinoma. The results suggest that papillary TLG-CT type carcinomas have a high incidence of lymph node metastasis. Our preliminary results suggest that TLG-CT is a potentially valuable diagnostic tool in the detection of thyroid disease and the assessment of the pathologic diagnosis as well as lymph node metastasis. (author).

  13. Usefulness of CT in diffuse pleural disease

    Energy Technology Data Exchange (ETDEWEB)

    Ashizawa, Kazuto; Uetani, Masataka; Mori, Masaichi; Matsunaga, Naofumi; Hayashi, Kuniaki; Kawahara, Katsunobu; Ayabe, Kimiji; Tsuda, Nobuo (Nagasaki Univ. (Japan). School of Medicine)

    1993-01-01

    Alterations of the pleura and extrapleural fat were assessed by CT in 114 patients with diffuse pleural disease. The diseases included malignant pleural mesothelioma, pleuritis carcinomatosa, acute and chronic empyema, asbestosis and transudatory effusion. The pleural changes were classified into five types according to the degree, extent and contour of pleural thickening. Each type was relatively specific for the diagnosis of diffuse pleural diseases. Increased thickness of the extrapleural fat was seen in malignant pleural disease and empyema, and homogenous increased attenuation of extrapleural was a relatively characteristic finding in acute empyema. CT was useful in evaluating diffuse pleural disease. (author).

  14. [CT-expo--a novel program for dose evaluation in CT].

    Science.gov (United States)

    Stamm, G; Nagel, H D

    2002-12-01

    CT-Expo is a novel MS Excel application for assessing the radiation doses delivered to patients undergoing CT examinations, based on computational methods that were used to analyze the data collected in the German survey on CT practice in 1999. The program enables the calculation of all dose quantities of practical value, such as axial dose free-in-air, weighted CTDI, dose-length product, effective dose and uterine dose. In contrast to existing programs for CT dose assessment, CT-Expo offers a number of unique features, such as gender-specific dose calculation for all age groups (adults, children, newborns), applicability to all existing scanner models including correction of scanner-specific influences, and the possibility of comparison with the results from the German CT survey on CT practice. Three different application modules offer free and standardized dose calculations as well as a comprehensive benchmarking section including guidance on dose optimization. The program is available as shareware in both German and English version. Additional information and a demo version free of charge can be requested via e-mail from the author's address stamm.georg@mh-hannover. de) or from the web page http://www.mh-hannover.de/kliniken/radiologie/str_04.html.

  15. Spiral CT venography in central venous obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Jin Wook; Park, Jae Hyung; Im, Jung Gi; Han, Moon Hee; Kim, In One; Chang, Kee Hyun; Yeon, Kyung Mo [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of); Song, Chi Sung [Boramae Hospital, Seoul (Korea, Republic of)

    1998-11-01

    To determine the clinical usefulness of spiral computed tomographic (CT) venography for the evaluation of central venous obstruction. The authors prospectively performed a total of 29 spiral CT venography procedures in 25 consecutive patients with suspected central venous obstrucion. Diluted contrast media were directly injected into the peripheral veins of the hand or the foot. Scan parameters were 3mm X-ray beam collimation, table speed of 4-6cm/sec, scan time of 32-40sec, and injection delay of 20 sec. Axial images were reconstructed at 2-mm intervals, and using shaded surface display(SSD), maximum intensity projection(MIP), and multiplanar reformation(MPR), 3-D reconstruction was performed. In all cases, ascending venograp-hy(n=3D13) and/or direct catheter venography (n=3D21) was performed within 2 days of CT venography. With regard to site, extent, extent, severity, and cause of obstruction and collateral circulation, we compared the results of CT and contrast venography. In 24 patients, a total of 56 sites of central venous obstruction or stenosis (>50%) were demonstrated. The causes of obstruction were venous thrombosis(n=3D6), malignant tumors(n=3D4), arteriovenous fistula for hemodialysis(n=3D5), extrinsic compression(n=3D2), coincidence of extrinsic compression and arteriovenous fistula(n=3D1), pacemaker(n=3D1), mediastinal inflammatory pseudotumor(n=3D1), spinal tuberculosis(n=3D1), membranous obstruction of the hepatic inferior vena cava(n=3D1), Behcet's disease(n=3D1), or unknown cause(n=3D1). When compared with ascending venography(n=3D13), CT venography was superior for evaluation of the extent and cause of obstruction and collateral circulation in two, four and one case(s), respectively. For the evaluation of site and severity of obstruction, CT venography was equal to ascending venography. In two cases, direct catheter venography (n=3D21) was superior to CT venography for evaluating the obstruction site, but in three, five and one case

  16. Strategies for CT tissue segmentation for Monte Carlo calculations in nuclear medicine dosimetry

    DEFF Research Database (Denmark)

    Braad, Poul-Erik; Andersen, Thomas; Hansen, Søren Baarsgaard;

    2016-01-01

    Purpose: CT images are used for patient specific Monte Carlo treatment planning in radionuclide therapy. The authors investigated the impact of tissue classification, CT image segmentation, and CT errors on Monte Carlo calculated absorbed dose estimates in nuclear medicine. Methods: CT errors...... as a function of patient size, CT reconstruction, and tube current modulation methods were assessed in a phantom experiment on a clinical CT system. The impact of tissue segmentation methods and CT number variations on EGSnrc Monte Carlo calculated absorbed dose distributions was assessed for 99mTc and 131I...... in the ICRP/ICRU male phantom and in a patient PET/CT-scanned with 124I prior to radioiodine therapy. Results: CT number variations types and accurate...

  17. CT scan of choristoma

    Energy Technology Data Exchange (ETDEWEB)

    Moriki, A.; Morimoto, M.; Sada, Y.; Kurisaka, M.; Mori, K.

    1987-02-01

    Choristoma is a rare tumor that occurs in the pituitary gland. The case presented here is a 44-year-old male. A plain CT scan demonstrated a slight high-density mass near the posterior clinoid of the sella turcica, while a moderate and homogeneous enhancing effect and a clear borderline were shown by an enhanced CT scan. A cornal CT scan study showed that the tumor extended from the intrasellar to the suprasellar region. The diagnosis of choristoma was made by means of histology.

  18. Balancing personalized medicine and personalized care.

    Science.gov (United States)

    Cornetta, Kenneth; Brown, Candy Gunther

    2013-03-01

    The current description of personalized medicine by the National Institutes of Health is "the science of individualized prevention and therapy." Although physicians are beginning to see the promise of genetic medicine coming to fruition, the rapid pace of sequencing technology, informatics, and computer science predict a revolution in the ability to care for patients in the near future. The enthusiasm expressed by researchers is well founded, but the expectations voiced by the public do not center on advancing technology. Rather, patients are asking for personalized care: a holistic approach that considers physical, mental, and spiritual well-being. This perspective considers psychological, religious, and ethical challenges that may arise as the precision of preventive medicine improves. Psychological studies already highlight the barriers to single gene testing and suggest significant barriers to the predictive testing envisioned by personalized medicine. Certain religious groups will likely mount opposition if they believe personalized medicine encourages embryo selection. If the technology prompts cost-containment discussions, those concerned about the sanctity of life may raise ethical objections. Consequently, the availability of new scientific developments does not guarantee advances in treatment because patients may prove unwilling to receive and act on personalized genetic information. This perspective highlights current efforts to incorporate personalized medicine and personalized care into the medical curriculum, genetic counseling, and other aspects of clinical practice. Because these efforts are generally independent, the authors offer recommendations for physicians and educators so that personalized medicine can be implemented in a manner that meets patient expectations for personalized care.

  19. CT diagnosis of retinoblastoma with histopathologic correlations

    Energy Technology Data Exchange (ETDEWEB)

    Olivecrona, H. [Dept. of Radiology, King Khaled Eye Specialist Hospital, Riyadh (Saudi Arabia); Agerberg, P.A. [Dept. of Radiology, King Khaled Eye Specialist Hospital, Riyadh (Saudi Arabia); Huaman, A. [Dept. of Pathology, King Khaled Eye Specialist Hospital, Riyadh (Saudi Arabia)

    1994-08-01

    The authors correlated the radiologic and histopathologic characteristics of 108 retinoblastomas in 98 patients. Calcifications were demonstrable by CT scans in 92.6% of the cases, whereas only 82% were evident upon routine histologic study. Cases of severe invasion of the optic nerve beyond the lamina cribrosa and up to the surgical margin of the nerve were detected by CT scans. Lesser degrees of invasion could not be determined by the same method. Orbital extension was also demonstrable, whereas invasion limited to the sclera was rarely accessible to CT diagnosis. Choroidal invasion was not detectable. Computerized tomography detected enlargement of the ipsilateral lacrimal gland in 17.5% of patients. This phenomenon correlates with invasion of the choroid and the optic nerve. (orig.)

  20. Building Blocks for Personal Brands

    Science.gov (United States)

    Thomas, Lisa Carlucci

    2011-01-01

    In this article, the author discusses the four essential building blocks for personal brands: (1) name; (2) message; (3) channels; and (4) bridges. However, outstanding building materials can only take a person so far. The author emphasizes that vision, determination, faith, a sense of humor, and humility are also required.

  1. CT dose optimisation and reduction in osteoarticular disease.

    Science.gov (United States)

    Gervaise, A; Teixeira, P; Villani, N; Lecocq, S; Louis, M; Blum, A

    2013-04-01

    With an improvement in the temporal and spatial resolution, computed tomography (CT) is indicated in the evaluation of a great many osteoarticular diseases. New exploration techniques such as the dynamic CT and CT bone perfusion also provide new indications. However, CT is still an irradiating imaging technique and dose optimisation and reduction remains primordial. In this paper, the authors first present the typical doses delivered during CT in osteoarticular disease. They then discuss the different ways to optimise and reduce these doses by distinguishing the behavioural factors from the technical factors. Among the latter, the optimisation of the milliamps and kilovoltage is indispensable and should be adapted to the type of exploration and the morphotype of each individual. These technical factors also benefit from recent technological evolutions with the distribution of iterative reconstructions. In this way, the dose may be divided by two and provide an image of equal quality. With these dose optimisation and reduction techniques, it is now possible, while maintaining an excellent quality of the image, to obtain low-dose or even very low-dose acquisitions with a dose sometimes similar that of a standard X-ray assessment. Nevertheless, although these technical factors provide a major reduction in the dose delivered, behavioural factors, such as compliance with the indications, remain fundamental. Finally, the authors describe how to optimise and reduce the dose with specific applications in musculoskeletal imaging such as the dynamic CT, CT bone perfusion and dual energy CT.

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... is done because a potential abnormality needs further evaluation with additional views or a special imaging technique. ... need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body after a CT ...

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... is done because a potential abnormality needs further evaluation with additional views or a special imaging technique. ... need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body after a CT ...

  4. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... for guiding minimally invasive procedures such as needle biopsies and needle aspirations of many areas of the ...

  5. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body after ...

  6. Abdominal and Pelvic CT

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... for guiding minimally invasive procedures such as needle biopsies and needle aspirations of many areas of the ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... CT scanning procedure. For exams (excluding head and neck) your head will remain outside the hole in ... type your comment or suggestion into the following text box: Comment: E-mail: Area code: Phone no: ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... injected into a vein) to help evaluate blood vessels and organs such as the liver, kidneys and ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... ability to image bone, soft tissue and blood vessels all at the same time. Unlike conventional x- ...

  10. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... is painless, noninvasive and accurate. It’s also the most reliable imaging technique for determining if the sinuses ... CT scan of the sinuses, the patient is most commonly positioned lying flat on the back. The ...

  11. CT Angiography (CTA)

    Science.gov (United States)

    ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and ... of the procedure, you may be asked to complete a questionnaire to ensure your safety during this ...

  12. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... visibility of certain tissues or blood vessels. A nurse or technologist will insert an intravenous (IV) line ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ... to you, revolve around you during the imaging process. You will be alone in the exam room ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ... to you, revolve around you during the imaging process. You will be alone in the exam room ...

  15. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... The teddy bear denotes child-specific content. Related Articles and Media Magnetic Resonance Imaging (MRI) - Head Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT ...

  16. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  17. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be stressful. The technologist or nurse, under the direction of a physician, may offer ...

  18. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... Magnetic Resonance Imaging (MRI) - Head Head and Neck Cancer Treatment Radiation Dose in X-Ray and CT Exams Contrast Materials Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... hours prior to your exam. Leave jewelry at home and wear loose, comfortable clothing. You may be ... the CT images and should be left at home or removed prior to your exam. You may ...

  2. Abdominal and Pelvic CT

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... cause blurring of the images and degrade the quality of the examination the same way that it ...

  3. Computed Tomography (CT) -- Head

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    Full Text Available ... liver, shows up in shades of gray, and air appears black. With CT scanning, numerous x-ray ... cause blurring of the images and degrade the quality of the examination the same way that it ...

  4. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... tomography (CT) scan View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

  6. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... tomography (CT) scan. View full size with caption Pediatric Content Some imaging tests and treatments have special pediatric considerations. The teddy bear denotes child-specific content. ...

  7. Abdominal and Pelvic CT

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    Full Text Available ... Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as ... of page What are some common uses of the procedure? This procedure is typically used to help ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... your exam. You should inform your physician of all medications you are taking and if you have ... body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a ...

  9. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... your exam. You should inform your physician of all medications you are taking and if you have ... body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... your exam. You should inform your physician of all medications you are taking and if you have ... body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple slices in a ...

  11. CT- and MR colonography

    DEFF Research Database (Denmark)

    Achiam, Michael Patrick; Bülow, Steffen; Rosenberg, J

    2002-01-01

    . Lately, CT- and MR colonography have emerged as non-invasive methods for colon imaging. METHODS: At present, CTC and MRC require bowel preparation. However, preliminary studies have been carried out without colon preparation. After the colon has been filled with air or contrast, the patient is scanned....... CONCLUSIONS: With the exponential development in computer processing power, CT- and MR colonography holds the promise for future colon examination with the advantages of non-invasiveness, no need for sedation, and probably no bowel preparation. A major disadvantage, however, is the radiation dose during CT...... colonography. Future developments with the use of "intelligent" computers, better resolution and faster examinations will make CT and/or MR colonography realistic options to replace conventional diagnostic colonoscopy....

  12. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... or thyroid problems. Any of these conditions may increase the risk of an unusual adverse effect. Women ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  13. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... or thyroid problems. Any of these conditions may increase the risk of an unusual adverse effect. The ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  14. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... or thyroid problems. Any of these conditions may increase the risk of an unusual adverse effect. Women ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  15. Computed Tomography (CT) -- Head

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    Full Text Available ... additional view capabilities. Modern CT scanners are so fast that they can scan through large sections of ... remain still during the exam. Many scanners are fast enough that children can be scanned without sedation. ...

  16. Pediatric CT Scans

    Science.gov (United States)

    The Radiation Epidemiology Branch and collaborators have initiated a retrospective cohort study to evaluate the relationship between radiation exposure from CT scans conducted during childhood and adolescence and the subsequent development of cancer.

  17. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... or liver cirrhosis. cancers of the liver, kidneys, pancreas, ovaries and bladder as well as lymphoma. kidney ... and organs such as the liver, kidneys and pancreas. When you enter the CT scanner, special light ...

  18. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... an image on a special electronic image recording plate. Bones appear white on the x-ray; soft ... which are then displayed on a monitor. CT imaging is sometimes compared to looking into a loaf ...

  19. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... an image on a special electronic image recording plate. Bones appear white on the x-ray; soft ... which are then displayed on a monitor. CT imaging is sometimes compared to looking into a loaf ...

  20. Computed Tomography (CT) -- Head

    Science.gov (United States)

    ... an image on a special electronic image recording plate. Bones appear white on the x-ray; soft ... which are then displayed on a monitor. CT imaging is sometimes compared to looking into a loaf ...

  1. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... an image on a special electronic image recording plate. Bones appear white on the x-ray; soft ... which are then displayed on a monitor. CT imaging is sometimes compared to looking into a loaf ...

  2. Abdominal and Pelvic CT

    Science.gov (United States)

    ... an image on a special electronic image recording plate. Bones appear white on the x-ray; soft ... which are then displayed on a monitor. CT imaging is sometimes compared to looking into a loaf ...

  3. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... many types of tissue as well as the lungs, bones, and blood vessels. CT examinations are fast ... of many areas of the body, particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... many types of tissue as well as the lungs, bones, and blood vessels. CT examinations are fast ... of many areas of the body, particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... to arriving. top of page What will I experience during and after the procedure? CT exams are ... at most a minute or two. You may experience a sensation like you have to urinate; however, ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... 10 minutes. top of page What will I experience during and after the procedure? CT exams are ... at most a minute or two. You may experience a sensation like you have to urinate; however, ...

  7. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... 10 minutes. top of page What will I experience during and after the procedure? CT exams are ... at most a minute or two. You may experience a sensation like you have to urinate; however, ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... cavity. CT scanning is painless, noninvasive and accurate. It’s also the most reliable imaging technique for determining ... parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. top of page What does ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. top of page What does ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, ...

  11. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... See the Safety page for more information about pregnancy and x-rays. top of page What does ... See the Safety page for more information about pregnancy and x-rays. CT scanning is, in general, ...

  12. Abdominal and Pelvic CT

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    Full Text Available ... Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal Cancer top of page This page was reviewed on ... GI Tract X-ray (Radiography) - Upper GI Tract Colorectal Cancer Images related to Computed Tomography (CT) - Abdomen and ...

  13. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... rays used in CT scans should have no immediate side effects. Risks There is always a slight ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... rays used in CT scans should have no immediate side effects. Risks There is always a slight ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... rays used in CT scans should have no immediate side effects. Risks There is always a slight ... possible charges you will incur. Web page review process: This Web page is reviewed regularly by a ...

  16. Computed Tomography (CT) -- Head

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    Full Text Available ... traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head injuries, stroke , brain tumors and other brain diseases than ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... tissue as well as the lungs, bones, and blood vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. ...

  18. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... tissue as well as the lungs, bones, and blood vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. ...

  19. Abdominal and Pelvic CT

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    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and ... may increase the risk of an unusual adverse effect. Women should always inform their physician and the ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and ... may increase the risk of an unusual adverse effect. The radiologist also should know if you have ...

  1. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... during the procedure. Metal objects, including jewelry, eyeglasses, dentures and hairpins, may affect the CT images and ... may increase the risk of an unusual adverse effect. Women should always inform their physician and the ...

  2. Computed Tomography (CT) -- Head

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    Full Text Available ... is reduced. Though the scanning itself causes no pain, there may be some discomfort from having to ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be ...

  3. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... is reduced. Though the scanning itself causes no pain, there may be some discomfort from having to ... time staying still, are claustrophobic or have chronic pain, you may find a CT exam to be ...

  4. Abdominal and Pelvic CT

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    Full Text Available ... often used to determine the cause of unexplained pain. CT scanning is fast, painless, noninvasive and accurate. ... help diagnose the cause of abdominal or pelvic pain and diseases of the internal organs, small bowel ...

  5. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... generated during a CT scan can be reformatted in multiple planes, and can even generate three-dimensional ... hours beforehand, as contrast material will be used in your exam. You should inform your physician of ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... or to plan radiation therapy for brain cancer. In emergency cases, it can reveal internal injuries and ... generated during a CT scan can be reformatted in multiple planes, and can even generate three-dimensional ...

  7. Computed Tomography (CT) -- Head

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    Full Text Available ... tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ...

  9. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test that, like ... contrast materials and a metallic taste in your mouth that lasts for at most a minute or ...

  10. Abdominal and Pelvic CT

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    Full Text Available ... have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may ... particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need ...

  11. Computed Tomography (CT) -- Head

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    Full Text Available ... have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may ... medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need ...

  12. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may ... particularly the lungs, abdomen, pelvis and bones. A diagnosis determined by CT scanning may eliminate the need ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder ... Send us your feedback Did you find the information you were looking for? Yes No Please type ...

  14. Computed Tomography (CT) -- Head

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    Full Text Available ... brain cancer. In emergency cases, it can reveal internal injuries and bleeding quickly enough to help save ... to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels provide ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  17. Computed Tomography (CT) -- Head

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    Full Text Available ... When the image slices are reassembled by computer software, the result is a very detailed multidimensional view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ...

  18. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... quickly. When you enter the CT scanner, special light lines may be seen projected onto your body, ... and its references. The risk of serious allergic reaction to contrast materials that contain iodine is extremely ...

  19. Abdominal and Pelvic CT

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    Full Text Available ... pancreas. When you enter the CT scanner, special light lines may be seen projected onto your body, ... in the womb. The risk of serious allergic reaction to contrast materials that contain iodine is extremely ...

  20. Computed Tomography (CT) -- Head

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    Full Text Available ... quickly. When you enter the CT scanner, special light lines may be seen projected onto your body, ... and its references. The risk of serious allergic reaction to contrast materials that contain iodine is extremely ...

  1. CT head in children

    Energy Technology Data Exchange (ETDEWEB)

    Rao, Padma, E-mail: padma.rao@rch.org.au [Royal Children' s Hospital and the University of Melbourne, Medical Imaging Department, Flemington Road, Parkville, Melbourne, Victoria 3052 (Australia); Bekhit, Elhamy, E-mail: elhamy.bekhit@rch.org.au [Royal Children' s Hospital and the University of Melbourne, Medical Imaging Department, Flemington Road, Parkville, Melbourne, Victoria 3052 (Australia); Ramanauskas, Fiona, E-mail: fiona.ramanauskas@rch.org.au [Royal Children' s Hospital and the University of Melbourne, Medical Imaging Department, Flemington Road, Parkville, Melbourne, Victoria 3052 (Australia); Kumbla, Surekha, E-mail: surekha.kumbla@rch.org.au [Royal Children' s Hospital and the University of Melbourne, Medical Imaging Department, Flemington Road, Parkville, Melbourne, Victoria 3052 (Australia)

    2013-07-15

    The advances in computerized technology (CT) technique over the last few decades have greatly modified imaging protocols in children. The range of pathologies that can now be demonstrated has broadened with the advent of newer techniques such as CT perfusion and the ability to perform complex reconstructions. Increasing speed of scanning and reduction in scan time have influenced the need for sedation and general anaesthetic as well as impacting on motion artefact. Additionally, concerns about radiation safety and avoidance of unnecessary radiation have further impacted on the inclusion of CT in the imaging armamentarium. Justification and image optimisation are essential. It is important to familiarize oneself with the appearances of normal variants or age related developmental changes. CT does however remain an appropriate investigation in a number of conditions.

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... modality for sinusitis. CT of the sinuses is now widely available and is performed in a relatively short time, especially when compared to magnetic resonance imaging (MRI). ...

  3. Lumbosacral spine CT

    Science.gov (United States)

    ... More Broken bone CT scan Cyst Herniated disk Osteoarthritis Osteomalacia Tumor Review Date 9/8/2014 Updated by: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, ...

  4. Computed Tomography (CT) -- Head

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... data suggest that it is safe to continue breastfeeding after receiving intravenous contrast. For further information please ...

  5. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... cavity and sinuses. plan for surgery by defining anatomy. top of page How should I prepare? You ... pregnancy and x-rays. CT scanning is, in general, not recommended for pregnant women unless medically necessary ...

  6. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... and accurate. It’s also the most reliable imaging technique for determining if the sinuses are obstructed and ... to obtain images. For children, the CT scanner technique will be adjusted to their size and the ...

  7. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... to obtain images. For children, the CT scanner technique will be adjusted to their size and the ... evaluation with additional views or a special imaging technique. A follow-up examination may also be necessary ...

  8. Abdominal and Pelvic CT

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    Full Text Available ... of electronic x-ray detectors rotate around you, measuring the amount of radiation being absorbed throughout your ... pancreas. When you enter the CT scanner, special light lines may be seen projected onto your body, ...

  9. Computed Tomography (CT) -- Head

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    Full Text Available ... of electronic x-ray detectors rotate around you, measuring the amount of radiation being absorbed throughout your ... quickly. When you enter the CT scanner, special light lines may be seen projected onto your body, ...

  10. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ... accredited facilities database . This website does not provide cost information. The costs for specific medical imaging tests, ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ... accredited facilities database . This website does not provide cost information. The costs for specific medical imaging tests, ...

  12. Computed Tomography (CT) -- Head

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    Full Text Available ... lives. CT has been shown to be a cost-effective imaging tool for a wide range of ... accredited facilities database . This website does not provide cost information. The costs for specific medical imaging tests, ...

  13. Abdominal and Pelvic CT

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    Full Text Available ... emergency cases, it can reveal internal injuries and bleeding quickly enough to help save lives. Tell your ... emergency cases, they can reveal internal injuries and bleeding quickly enough to help save lives. CT has ...

  14. Abdominal and Pelvic CT

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... increase the risk of an unusual adverse effect. Women should always inform their physician and the CT ...

  15. Computed Tomography (CT) -- Head

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... have diabetes —particularly if you are taking Glucophage . Women should always inform their physician and the CT ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... to remove hearing aids and removable dental work. Women will be asked to remove bras containing metal ... increase the risk of an unusual adverse effect. Women should always inform their physician and the CT ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... Leave jewelry at home and wear loose, comfortable clothing. You may be asked to wear a gown. ... CT scan? You should wear comfortable, loose-fitting clothing to your exam. You may be given a ...

  18. Computed Tomography (CT) -- Head

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    Full Text Available ... to wear a lead apron to minimize radiation exposure. After a CT exam, the intravenous line used ... always a slight chance of cancer from excessive exposure to radiation. However, the benefit of an accurate ...

  19. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... to wear a lead apron to minimize radiation exposure. After a CT exam, the intravenous line used ... always a slight chance of cancer from excessive exposure to radiation. However, the benefit of an accurate ...

  20. Abdominal and Pelvic CT

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    Full Text Available ... to wear a lead apron to minimize radiation exposure. After a CT exam, the intravenous line used ... always a slight chance of cancer from excessive exposure to radiation. However, the benefit of an accurate ...

  1. Abdominal and Pelvic CT

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    Full Text Available ... view of the body's interior. Refinements in detector technology allow nearly all CT scanners to obtain multiple ... to urinate; however, this is actually a contrast effect and subsides quickly. If the contrast material is ...

  2. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... these links. About Us | Contact Us | FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2017 Radiological ...

  3. Computed Tomography (CT) -- Head

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... these links. About Us | Contact Us | FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2017 Radiological ...

  4. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... microphone. top of page How does the procedure work? In many ways CT scanning works very much ... these links. About Us | Contact Us | FAQ | Privacy | Terms of Use | Links | Site Map Copyright © 2017 Radiological ...

  5. Abdominal and Pelvic CT

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    Full Text Available ... painless, noninvasive and accurate. In emergency cases, it can reveal internal injuries and bleeding quickly enough to ... cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even ...

  6. Computed Tomography (CT) -- Head

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    Full Text Available ... therapy for brain cancer. In emergency cases, it can reveal internal injuries and bleeding quickly enough to ... cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even ...

  7. Chest CT Scan

    Science.gov (United States)

    ... can combine these pictures to create three-dimensional (3D) models to help show the size, shape, and ... a medical imaging facility or hospital. The CT scanner is a large, tunnel-like machine that has ...

  8. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... you are pregnant and discuss any recent illnesses, medical conditions, medications you’re taking, and allergies. You ... a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple ...

  9. Abdominal and Pelvic CT

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    Full Text Available ... you are pregnant and discuss any recent illnesses, medical conditions, medications you’re taking, and allergies. You ... a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple ...

  10. Computed Tomography (CT) -- Head

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    Full Text Available ... you are pregnant and discuss any recent illnesses, medical conditions, medications you’re taking, and allergies. You ... a CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple ...

  11. Abdominal and Pelvic CT

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    Full Text Available ... scanning is fast, painless, noninvasive and accurate. In emergency cases, it can reveal internal injuries and bleeding ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding ...

  12. Computed Tomography (CT) -- Head

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    Full Text Available ... to plan radiation therapy for brain cancer. In emergency cases, it can reveal internal injuries and bleeding ... vessels. CT examinations are fast and simple; in emergency cases, they can reveal internal injuries and bleeding ...

  13. Computed Tomography (CT) -- Head

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. CT scanning provides more detailed information on head ...

  14. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... images of internal organs, bones, soft tissue and blood vessels provide greater detail than traditional x-rays, particularly of soft tissues and blood vessels. A CT scan of the face produces images ...

  15. Abdominal and Pelvic CT

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    Full Text Available ... CT) of the abdomen and pelvis is a diagnostic imaging test used to help detect diseases of the ... a radiologist or other physician. To locate a medical imaging or radiation oncology provider in your community, you ...

  16. Computed Tomography (CT) -- Sinuses

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    Full Text Available ... of the nasal cavity and sinuses. plan for surgery by defining anatomy. top of page How should ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a ...

  17. Abdominal and Pelvic CT

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    Full Text Available ... treatments. plan for and assess the results of surgery, such as organ transplants. stage, plan and properly ... CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a ...

  18. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... as: infections such as appendicitis , pyelonephritis or infected fluid collections, also known as abscesses. inflammatory bowel disease ... caused by a burst appendix or an infected fluid collection and the subsequent spread of infection. CT ...

  19. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... cavity. CT scanning is painless, noninvasive and accurate. It’s also the most reliable imaging technique for determining ... parts absorb the x-rays in varying degrees. It is this crucial difference in absorption that allows ...

  20. Lumbar spine CT scan

    Science.gov (United States)

    CAT scan - lumbar spine; Computed axial tomography scan - lumbar spine; Computed tomography scan - lumbar spine; CT - lower back ... your breath for short periods of time. The scan should take only 10 to 15 minutes.

  1. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... Abdomen and Pelvis? What is CT Scanning of the Abdomen/Pelvis? Computed tomography, more commonly known as ... of page What are some common uses of the procedure? This procedure is typically used to help ...

  2. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... entire body will be "inside" the scanner at one time such as with MRI. If an intravenous ... CT scanning provides very detailed images of many types of tissue as well as the lungs, bones, ...

  3. Cervical spine CT scan

    Science.gov (United States)

    ... defects of the cervical spine Bone problems Fracture Osteoarthritis Disc herniation Risks Risks of CT scans include: ... Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, ...

  4. PET and PET/CT in malignant melanoma; PET y PET/CT en melanoma maligno

    Energy Technology Data Exchange (ETDEWEB)

    Garcia O, J.R. [Nuclear Medicine and Molecular Imaging PET/CT, Centro Medico ABC, Mexico D.F. (Mexico)

    2007-07-01

    The advantages that it has the PET/CT are: 1. It diminishes mainly positive false lesions. It identifies physiologic accumulate places. 2. It diminishes in smaller grade false negative. Small injuries. Injuries with low grade concentration. Injure on intense activity areas. 3. Precise anatomical localization of accumulate places. 4. Reduction of the acquisition time. (Author)

  5. CT- and MR colonography

    DEFF Research Database (Denmark)

    Achiam, Michael Patrick; Bülow, Steffen; Rosenberg, J

    2002-01-01

    . Lately, CT- and MR colonography have emerged as non-invasive methods for colon imaging. METHODS: At present, CTC and MRC require bowel preparation. However, preliminary studies have been carried out without colon preparation. After the colon has been filled with air or contrast, the patient is scanned...... colonography. Future developments with the use of "intelligent" computers, better resolution and faster examinations will make CT and/or MR colonography realistic options to replace conventional diagnostic colonoscopy....

  6. 31 CFR 538.512 - Transactions related to telecommunications authorized.

    Science.gov (United States)

    2010-07-01

    ... telecommunications authorized. 538.512 Section 538.512 Money and Finance: Treasury Regulations Relating to Money and... telecommunications authorized. All transactions with respect to the receipt and transmission of telecommunications... a person in Sudan of telecommunications equipment or technology....

  7. Phase-contrast X-ray CT

    Energy Technology Data Exchange (ETDEWEB)

    Momose, Atsushi [Hitachi Ltd., Saitama (Japan). Advanced Research Laboratory; Takeda, Tohoru; Itai, Yuji

    1995-12-01

    Phase-contrast X-ray computed tomography (CT) enabling the observation of biological soft tissues without contrast enhancement has been developed. The X-ray phase shift caused by an object is measured and input to a standard CT reconstruction algorithm. A thousand times increase in the image sensitivity to soft tissues is achieved compared with the conventional CT using absorption contrast. This is because the X-ray phase shift cross section of light elements is about a thousand times larger than the absorption cross section. The phase shift is detected using an X-ray interferometer and computer analyses of interference patterns. Experiments were performed using a synchrotron X-ray source. Excellent image sensitivity is demonstrated in the observation of cancerous rabbit liver. The CT images distinguish cancer lesion from normal liver tissue and, moreover, visualize the pathological condition in the lesion. Although the X-ray energy employed and the present observation area size are not suitable for medical applications as they are, phase-contrast X-ray CT is promising for investigating the internal structure of soft tissue which is almost transparent for X-rays. The high sensitivity also provides the advantage of reducing X-ray doses. (author).

  8. CT findings of orbital langerhans cell histiocytosis

    Energy Technology Data Exchange (ETDEWEB)

    Yi, Gina; Yoon, Hye Kyung; Han, Bokyung Kim; Kim, Kyeong Ah; Choo, In Wook [Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul (Korea, Republic of)

    2000-05-01

    To evaluate the CT findings in patients with Langerhans cell histiocytosis (LCH) involving the orbit. Orbital CT scans of six children with pathologically proven LCH were retrospectively analyzed. Follow-up CT (n=3D5) and MR (n=3D1) imaging findings were also reviewed. Initial CT scans revealed varying degree of bone destruction with soft-tissue masses, and on nonenhanced images the mean attenuation value was 44 Hounsfield units (HU). All masses showed mild to moderate enhancement with a mean attenuation value of 74 HU. The bony margins abutting onto soft tissue masses were irregular but clearly demarcated. No evidence of calcification or periosteal reaction was noted. Suprasellar mass and rib involvement was noted in one patient and hepatosplenomegaly in two. Follow-up CT and MR images showed that the soft tissue masses were almost completely resolved, with bone remodeling and reossification. A soft tissue mass with irregular but clearly demarcated bone destruction is thought to be a characteristic finding of LCH involving the orbit. Follow-up images after treatment showed bone remodeling and reossification. (author)

  9. Virtual CT laparoscopic imaging using intravenous cholangiography with helical CT

    Energy Technology Data Exchange (ETDEWEB)

    Uchida, Masafumi; Ishibashi, Masatoshi; Nishimura, Hiroshi; Hayabuchi, Naofumi [Kurume Univ., Fukuoka (Japan). School of Medicine

    2000-08-01

    Laparoscopic cholecystectomy is a reatively new technology that allows for minimally invasive treatment of cholelithiasis. The purpose of this paper is to demonstrate the feasibility of virtual laparoscopic imaging using helical CT cholangiography with volume rendering technique. We used the technique with ten patients with suspected gallbladder abnormalities. Our imaging sets produced high quality 3D images with excellent visualization in 70% (7/10) of all cases. Virtual laparoscopic imaging was also compared with other imaging techniques and imaging using helical scans can proved useful in preoperative imaging. Furthermore, virtual laparoscopic imaging using helical scans can in surgical planning and serve as a visual aid in discussions between radiologists, surgeons, and patients. (author)

  10. CT features of renal infarction

    Energy Technology Data Exchange (ETDEWEB)

    Suzer, Okan; Shirkhoda, Ali; Jafri, S. Zafar; Madrazo, Beatrice L.; Bis, Kostaki G.; Mastromatteo, James F

    2002-10-01

    Purpose: To demonstrate the different patterns of renal infarction to avoid pitfalls. To present 'flip-flop enhancement' pattern in renal infarction. Materials and methods: Retrospective review of a total of 41 renal infarction in 37 patients were done. These patients underwent initial CT and the diagnosis of renal infarction was confirmed with either follow up CT or at surgery. Results: Twenty-three patients had wedge-shaped focal infarcts, nine patients had global and five patients had multifocal infarcts of the kidneys. Cortical rim sign was seen predominantly with global infarcts. In five patients, a 'flip-flop enhancement' pattern was observed. In two patients, planned renal biopsies due to tumefactive renal lesions were cancelled because of 'flip-flop enhancement' pattern on follow up CTs. Conclusion: Although most of our cases were straightforward for the diagnosis of renal infarction, cases with tumefactive lesions and global infarctions without the well-known cortical rim sign were particularly challenging. We describe a new sign, flip-flop enhancement pattern, which we believe solidified the diagnosis of renal infarction in five of our cases. The authors recommend further investigations for association of flip-flop enhancement and renal infarction.

  11. Colorectal carcinoma evaluated by incremental dynamic CT; Comparison of CT density, histology, and tumor size

    Energy Technology Data Exchange (ETDEWEB)

    Furukawa, Hiroyoshi; Hara, Tsuyoshi; Taniguchi, Tetsushi (Shimizu Kosei Hospital, Shizuoka (Japan))

    1992-06-01

    Evaluation of incremental dynamic CT scan and histologic findings were compared in order to clarify the cause of the differences in colorectal carcinoma as observed on CT after administration of contrast medium. In 48 cases demonstrated on postcontrast dynamic CT scan, the CT density of the tumor was homogeneous (Type 1) in 26 (54.2%) cases and heterogeneous (Type 2) in 22 (45.8%) cases. Well differentiated adenocarcinoma was seen as Type 1 in 11 of 13 (84.6%) cases while moderately differentiated adenocarcinoma was of Type 1 in 15 of 29 (51.7%) cases. Poorly differentiated and mucinous adenocarcinoma were detected as Type 2 in all cases. A comparison of CT types and tumor size showed that as tumor size increased, the number of Type 1 cases decreased while Type 2 cases increased. Histologically, high density areas consisted mainly of well-developed tubular, branching glands of adenocarcinoma, while low density areas were composed of fibrous or mucinous stroma or necrosis. Dynamic CT scans for colorectal cancer are useful not only for preoperative staging but also for tissue characterization. (author).

  12. 8 CFR 310.1 - Administrative naturalization authority.

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Administrative naturalization authority... NATURALIZATION AUTHORITY § 310.1 Administrative naturalization authority. (a) Attorney General. Commencing October 1, 1991, section 310 of the Act confers the sole authority to naturalize persons as citizens...

  13. [PET/CT in breast cancer: an update].

    Science.gov (United States)

    Groheux, D; Moretti, J-L; Giacchetti, S; Hindié, E; Teyton, P; Cuvier, C; Bousquet, G; Misset, J-L; Boin, C; Espié, M

    2009-11-01

    The authors discuss the various roles of 18F-FDG PET/CT in the management of breast cancer. Roles of new tracers such as F-18 fluoro-L-thymidine (a marker of cell proliferation), 18-fluoro-17-B-estradiol (marker of estrogen receptor) and sodium fluoride (marker of bone matrix) are also mentioned. There is little justification for the use of FDG-PET/CT in patient with clinically T1 (occult distant metastases, notably, early osteomedullary infiltration. Thus, for these tumors, initial PET/CT can enable better intramodality treatment planning or a change in treatment. PET/CT as a whole-body examination is also very efficient in case of suspicion of recurrence. On the other hand, many studies show that this functional imaging could be used to assess early response to neoadjuvant chemotherapy or to chemotherapy of metastatic disease. 18FDG-PET/CT could thus become an unavoidable modality to answer various clinical situations.

  14. A Test of Reliability of the Personnel Dosimetry Services Authorized by CSN using Photon Beams; Control de los servicios de dosimetria personal autorizados por el CSN, usando haces de fotones

    Energy Technology Data Exchange (ETDEWEB)

    Brosed, A.; Delgado, A.; Granados, C. E.; Lopez Ortiz, G.

    1987-07-01

    In 1987 the Consejo de Seguridad Nuclear (CSN) had eight Personnel Dosimetry Services (PDS) authorized to asses the equivalent doses to the spanish occupationally exposed workers, by means of the readings from the dosemeters wear by them. An audit was carried on the PDS on behalf of CSN under the control of CIEMAT. Batches of dosemeters from each one of the PDS were irradiated to dose equivalent values which were well established by CIEMAT but kept hidden from the PDS. By comparing the true values with those obtained by the PDS, it was possible to evaluate the Services according to the analysis of the quantity Q= I B I -I- S where B is the average of the individual deviations between the dosemeters belonging to the same group and the true value as established by CIEMAT, whereas S is the standard deviation of the values inside of this same group. The results of the evaluation, which was made using the new ICRU quantities for personnel monitoring, are presented. (Author) 8 refs.

  15. Lumbar spine: pretest predictability of CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Giles, D.J.; Thomas, R.J.; Osborn, A.G.; Clayton, P.D.; Miller, M.H.; Bahr, A.L.; Frederick, P.R.; O' Connor, G.D.; Ostler, D.

    1984-03-01

    Demographic and symptomatic data gathered from 460 patients referred for lumbosacral CT examinations were analyzed to determine if the prescan probability of normal or abnormal findings could be predicted accurately. The authors were unable to predict the presence of herniated disk on the basis of patient-supplied data alone. Age was the single most significant predictor of an abnormality and was sharply related to degenerative disease and spinal stenosis.

  16. PET-CT; PET-CT

    Energy Technology Data Exchange (ETDEWEB)

    Schober, O. [Univeritaetsklinikum Muenster (Germany). Klinik und Poliklinik fuer Nuklearmedizin; Heindel, W. [Univeritaetsklinikum Muenster (Germany). Inst. fuer Klinische Radiologie

    2008-07-01

    Positron emission tomography - computerized tomography (PET-CT) is the fusion of two modern imaging techniques. The book includes the following chapters: 1. fundamentals: radiation protection aspects, radionuclide production, contrast agents, patient preparation, image interpretation; 2. diagnostics of carcinomas: carcinomas in brain, head-throat, thyroid, lungs, intestinal tract, gynecological carcinomas, urinary tract and bladder carcinomas, prostate carcinomas, malignant lymphomas, malignant malinomas, carcinomas in the skeletal system; 3. infections; 4. diagnostics of cardiovascular diseases; 5. diagnostics of neurodegenerative diseases; 6. developments and perspectives, 7. attachments: internet links, glossary, abbreviations.

  17. 75 FR 69734 - Application of Island Airlines, LLC for Commuter Air Carrier Authorization

    Science.gov (United States)

    2010-11-15

    ... Airlines, LLC for Commuter Air Carrier Authorization AGENCY: Department of Transportation. ACTION: Notice... Airlines, LLC, fit, willing, and able, and awarding it Commuter Air Carrier Authorization. DATES: Persons...

  18. CT of thymoma

    Energy Technology Data Exchange (ETDEWEB)

    Sone, S.; Higashihara, T.; Morimoto, S.; Ikezoe, J.; Arisawa, J. (Osaka Univ. (Japan). Faculty of Medicine)

    1982-08-01

    Based on 17 patients with thymoma (8 with myasthenia gravis and 9 free from it); 1. The effectiveness of CT, conventional radiography and pneumomediastinography in the detection of thymomas was determined and the results compared. 2. The CT findings of thymomas were discussed and the CT features which seemed to suggest malignant thymomas were evaluated. The results were as follows: 1. Of the 17 cass with thymomas, 13 were diagnosed from p-a films, 13 from lateral films, and 16 from CT. Of the 16 thymomas, 14 were diagnosed from lateral tomography. Mass densities were shown in all 15 cases in which pneumomediastinography were performed. 2. Benign thymomas showed round or oval smoothly marginated mass. The fatty plane between the mass and the mediastinal structures was nicely preserved. 3. Malignant thymoma frequently showed a plaque-like mass with more or less irregular or lobulated contours with obliteration of the fatty planes of the cardiovascular structures. Tumor calcification was shown in 4 of 10 malignant thymomas. 4. Slight tumor invasion to the mediastinal pleura and lung was difficult to predict from the CT images.

  19. Detection of brain metastases from lung cancer by CT and MRI

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, Tetsu; Ohno, Yoshiharu [Kobe Univ. (Japan). School of Medicine; Endo, Masahiro [and others

    1996-08-01

    To compare the detectability of brain metastases from lung cancer, both CT and MRI were performed on all patients. Thirty-two lung cancer patients with brain metastases admitted from December 1990 to June 1994 were examined by CT and MRI using contrast enhancement. Six radiologists individually evaluated CT and MRI films for brain metastases. In 3 of 32 cases, multiple small metastatic lesions which could not be detected on CT were detected on MRI. In 29 of the 32 cases, 56 metastatic lesions were detected on CT, whereas 103 lesions were detected on MRI. There were no lesions that were detected only by CT and were not detected by MRI. MRI was superior to CT for determining small lesions less than 9 mm and inferior tentorial lesions. As a result, we consider that CT is not sufficiently effective for detecting brain metastases of lung cancer, and that MRI is now indispensable. (author)

  20. Instructions for Authors

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>1. Items of the paper Title, author’s name and working unit,abstract, key words, text andreference.2. Author and working unitEntitled authors should be those involved in the research and wouldbe able to answer

  1. Instructions for Authors

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>1. Items of the paper Title, author’s name and working unit,abstract, key words, text and reference.2. Author and working unit Entitled authors should be those involved in the research and would

  2. MR imaging compared with CT, angiography, and myelography supplemented with CT in the diagnosis of spinal tumors

    Energy Technology Data Exchange (ETDEWEB)

    Hasuo, Kanehiro; Uchino, Akira; Matsumoto, Shunichi; Fujii, Kiyotaka; Fukui, Masashi; Masuda, Kouji (Kyushu Univ., Fukuoka (Japan). Faculty of Medicine)

    To clarify the significance of MR imaging and the present status of CT, angiography, and myelography supplemented by CT (M-CTM), the radiological findings of 50 spinal tumors were reviewed and analyzed. MR imaging was most effective for visualizing morphological features such as the margins and/or inner structures of the tumors. CT was also effective for imaging 'dumbbell' neurinomas and extradural tumors. Angiography was necessary in one hemangioblastoma and in cervical extradural tumors. M-CTM visualized the morphology of intradural extramedullary tumors and extradural tumors, but provided no new information in most of these cases. It was concluded that when using MR the indications for CT, angiography, and M-CTM are limited and that CT or angiography should be performed only in selected cases. M-CTM appeared to be unnecessary. (author).

  3. Taking bioethics personally.

    Science.gov (United States)

    Chambers, Tod; Ahmad, Ayesha; Crow, Sheila; Davis, Dena S; Dresser, Rebecca; Harter, Thomas D; Jordan, Sara R; Kaposy, Chris; Lanoix, Monique; Lee, K Jane; Scully, Jackie Leach; Taylor, Katherine A; Watson, Katie

    2013-01-01

    This narrative symposium examines the relationship of bioethics practice to personal experiences of illness. A call for stories was developed by Tod Chambers, the symposium editor, and editorial staff and was sent to several commonly used bioethics listservs and posted on the Narrative Inquiry in Bioethics website. The call asked authors to relate a personal story of being ill or caring for a person who is ill, and to describe how this affected how they think about bioethical questions and the practice of medicine. Eighteen individuals were invited to submit full stories based on review of their proposals. Twelve stories are published in this symposium, and six supplemental stories are published online only through Project MUSE. Authors explore themes of vulnerability, suffering, communication, voluntariness, cultural barriers, and flaws in local healthcare systems through stories about their own illnesses or about caring for children, partners, parents and grandparents. Commentary articles by Arthur Frank, Bradley Lewis, and Carol Taylor follow the collection of personal narratives.

  4. Ultrasound, CT and MRI of ruptured and disseminated hydatid cysts

    Energy Technology Data Exchange (ETDEWEB)

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

    Three cases of echinococcus granulosus with rupture of hydatid cysts and widespread abdominal, pelvic of pleural dissemination are described. Ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) allowed recognition of ruptured hydatid cysts. This assisted to come to an appropriate therapy and exclusion or confirmation of hydatid cysts elsewhere in the body. Ultrasound, CT and MRI are also important for follow-up, evaluation of therapeutic response and/or early diagnosis of recurrence. (author). 22 refs.; 3 figs.

  5. Communication of authority

    DEFF Research Database (Denmark)

    Holt, Else Kragelund

    2009-01-01

    The Book of Jeremiah emphasises that the prophet has his authority from God, who communicated this authority to the prophet by calling him. Being invested with divine authority, the prophet was disjuncted from the people, but conjuncted with God, in a process where the divine word is closely......, in which form....

  6. Authority in Engineering Education

    Science.gov (United States)

    Stephan, Karl D.

    2012-01-01

    Authority as a philosophical concept is defined both in general and as it applies to engineering education. Authority is shown to be a good and necessary part of social structures, in contrast to some cultural trends that regard it as an unnecessary and outmoded evil. Technical, educational, and organizational authority in their normal functions…

  7. Author! Author! Making Kids Laugh: Jon Scieszka

    Science.gov (United States)

    Brodie, Carolyn S.

    2004-01-01

    This article presents a brief biography of author Jon Scieszka, best known for his first published title, "The True Story of the Three Little Pigs!" which has become a modern classic. The publication of this creative and inventive title led to the numerous fractured fairy tales published since its release in 1989. His books have received numerous…

  8. MRI of extraocular orbital diseases; Comparison with CT

    Energy Technology Data Exchange (ETDEWEB)

    Takeda, Hiroyuki (Nagasaki Univ. (Japan). School of Medicine)

    1990-12-01

    The author investigated the usefulness of MRI in the diagnosis of extraocular orbital diseases, and the diagnostic ability of MRI was compared with that of CT. The materials consisted of 38 cases of diseases in extraocular orbital region (all cases were examined with MRI and 34 of them were also examined with CT). MRI was performed with spin echo or STIR sequences using a 1.5 tesla superconductive unit (GE SIGNA). CT was performed using SOMATOM CR and DR-H. The study showed that MRI was equally or more useful than CT in detecting lesions as well as assessing the internal architecture and extension of the lesions. Differentiation between benign and malignant tumors by MRI is difficult from their signal intensity only and can be made from their extraorbital extension, just as by CT. In Graves' orbitopathy, T{sub 2}-weighted images were more sensitive in reflecting its new or old pathological changes than CT. T{sub 1}-weighted images enhanced with Gd-DTPA were useful in differentiating sphenoid wing meningiomas from other tumors, but not useful in assessing the degree of intraorbital extension. STIR sequences were particularly useful in the diagnosis of optic nerve atrophy and expectd to be applied to the lesions which were not detected or poorly demonstrated with CT and spin echo sequences. (author).

  9. Use of CT in the evaluation of cochlear otosclerosis

    Energy Technology Data Exchange (ETDEWEB)

    Mafee, M.F.; Valvassori, G.E.; Deitch, R.L.; Norouzi, P.; Henrikson, G.C.; Capek, V.; Applebaum, E.L.

    1985-09-01

    Otosclerosis (otospongiosis) occurs when the hard endochondral bone of the otic capsule is replaced by spongy vascular foci of haversian bone. Using computed tomography (CT), the authors studied the ears of 32 selected patients with mixed or sensorineural hearing loss; 24 were suspected of having otosclerosis. CT proved valuable in detecting cochlear otosclerosis, foci of demineralization, and changes in bony texture and enables the easy recognition of subtle radiographic findings. This paper also reports the CT findings of temporal bones in osteogenesis imperfecta and Paget disease.

  10. Reliability of CT in preoperative evaluation of bladder carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Nurmi, M.; Puntala, P. (Univ. of Turku (Finland). Dept. of Surgery); Katevuo, K. (Univ. of Turku (Finland). Dept. of Radiology)

    1988-01-01

    Sixty patients with bladder carcinoma were examined by CT prior to radical cystectomy. CT indicated perivesical tumor growth or extension to neighboring organs correctly in 60 % of the cases. Overstaging was observed in 23% and understaging in 8 % of the cases. Most of the difficulties concerned assessment of tumors in the anterior bladder wall and identification of the plane between the bladder and the seminal vesicle. In most instances CT provided no supplementary information to clinical staging, but was useful when obesity or previous irradiation impeded clinical staging. (authors).

  11. CT findings of respiratory bronchiolitis caused by cigarette smoking

    Energy Technology Data Exchange (ETDEWEB)

    Katagiri, Siro; Osima, K.; Kim, S. [Chiba Tokusyukai Hospital, Funabashi (Japan)

    1998-07-01

    CT scans were performed in 11 cases of respiratory bronchiolitis caused by cigarette smoking. Characteristics of CT findings were as follows: Remarkable visualization of the branching in peripheral bronchi within secondary lobules, multiple ground-glass opacities of centrilobular or lobular size adjacent to the above mentioned bronchial branching, thickening of the bronchial wall without dilatation, and no or minimal centrilobular emphysema. These characteristic CT findings were observed in all of 11 cases, who are current smokers, and never observed in non-smokers, ex-smokers and patients with apparent centrilobular emphysema. (author)

  12. CT findings in isolated ischemic proctosigmoiditis

    Energy Technology Data Exchange (ETDEWEB)

    Wiesner, Walter; Mortele, Koenraad J.; Ji, Hoon; Khurana, Bharti; Ros, Pablo R. [Department of Radiology, Brigham and Women' s Hospital, Harvard Medical School, Boston, MA (United States); Glickman, Jonathan N. [Department of Pathology, Brigham and Women' s Hospital, Harvard Medical School, Boston, MA (United States)

    2002-07-01

    The purpose of our study was to describe the CT features of ischemic proctosigmoiditis in correlation with clinical, laboratory, endoscopic, and histopathologic findings. Our study included seven patients with isolated ischemic proctosigmoiditis. Patients were identified by a retrospective review of all histopathologic records of colonoscopic biopsies performed during a time period of 4 years. All patients presented with left lower abdominal quadrant pain, bloody stools, and leukocytosis, and four patients had fever at the time of presentation. Four of seven patients suffered from diarrhea, one of seven was constipated and two of seven had normal stool consistency. The CT examinations were reviewed by two authors by consensus and compared with clinical and histopathologic results as well as with the initial CT diagnosis. The CT showed a wall thickening confined to the rectum and sigmoid colon in seven of seven patients, stranding of the pararectal fat in four of seven, and stranding of the perisigmoidal fat in one of seven patients. There were no enlarged lymph nodes, but five of seven patients showed coexistent diverticulosis and in three of these patients CT findings were initially misinterpreted as sigmoid diverticulitis. Endoscopies and histopathologic analyses of endoscopic biopsies confirmed non-transmural ischemic proctosigmoiditis in all patients. Isolated ischemic proctosigmoiditis often presents with unspecific CT features and potentially misleading clinical and laboratory findings. In an elderly patient or a patient with known cardiovascular risk factors the diagnosis of ischemic proctosigmoiditis should be considered when wall thickening confined to the rectum and sigmoid colon is seen that is associated with perirectal fat stranding. (orig.)

  13. Role of CT in patients with prostatic disease; Usefulness of depiction of prostatic zonal anatomy

    Energy Technology Data Exchange (ETDEWEB)

    Yoshizako, Takeshi; Sugimura, Kazuro; Kaji, Yasushi; Moriyama, Masahiro; Ishida, Tetsuya (Shimane Medical Univ., Izumo (Japan))

    1994-05-01

    The purpose of this study was to evaluate the role of CT in patients with and without prostatic disease. CT and MR findings were reviewed in 25 patients without known prostatic disease, 11 patients with benign prostatic hyperplasia and 11 patients with prostatic cancer. Differential attenuation allowed for distinction of the peripheral zone and inner gland of the prostate by CT in 72% of normal patients. The distinction rate of prostatic zonal anatomy by CT decreased to 30% in the diseased group. When zonal anatomy of the prostate is not visualized on pelvic enhanced CT, the presence of prostatic disease might be considered. (author).

  14. 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).

  15. Communication of authority

    DEFF Research Database (Denmark)

    Holt, Else Kragelund

    2009-01-01

    The Book of Jeremiah emphasises that the prophet has his authority from God, who communicated this authority to the prophet by calling him. Being invested with divine authority, the prophet was disjuncted from the people, but conjuncted with God, in a process where the divine word is closely...... assimilated with the prophet. Thus, the literary persona, the prophet, and his book, is able to talk with normative authority in a context, post-exilic Judah/Yehud, which calls for normativity to sustain the rebuilding of society. The question remains if this normative authority can be upheld today, and if so...

  16. 42 CFR 32.90 - Notification to health authorities regarding discharged patients.

    Science.gov (United States)

    2010-10-01

    ... SERVICES MEDICAL CARE AND EXAMINATIONS MEDICAL CARE FOR PERSONS WITH HANSEN'S DISEASE AND OTHER PERSONS IN EMERGENCIES Persons with Hansen's Disease § 32.90 Notification to health authorities regarding discharged...

  17. A study on CT diagnosis of pancreatic diseases

    Energy Technology Data Exchange (ETDEWEB)

    Han, Man Chung; Lim, Tae Hwan; Chang, Kee Hyun; Park, Jae Hyung; Yeon, Kyung Mo; Kim, Chung Yong; Yoon, Yong Bum; Song, Sung In [Seoul National University College of Medicine, Seoul (Korea, Republic of)

    1982-06-15

    Authors retrospectively analysed abdominal CT findings of 120 patients, of whom the CT was done under the clinical impression of pancreatic diseases. These include 20 patients of acute pancreatitis, 12 patients of chronic pancreatitis, and 41 patients of pancreatic tumor. Remaining 47 patients were proved to have normal pancreas. CT permitted correct diagnosis in 108 of 120 patients with diagnostic accuracy 91%, sensitivity 95%, and specificity 79%. Predictive value of positive CT diagnosis was 93% and that of negative diagnosis was 82%. Commonly observed CT findings of acute pancreatitis were diffuse pancreatic enlargement (75%), obliteration of peripancreatic fat planes (70%), peripancreatic 'Dirty fat' (50%), and renal fasical thickening (50%). Abscess formation, pseudocyst formation, phlegmon, and fluid collection were the complications of acute pancreatitis in order of frequency. In chronic pancreatitis, pancreatic calcification was the most frequent (58%) and specific CT finding. Pancreas size were normal in 2 patients (16%), atrophic in 5 patients (42%), and enlarged in 5 patients (42%). Of 40 patients with pancreatic cancer, 36 patients showed pancreatic mass on CT, and 18 were with central low density. Other findings of pancreatic cancer were obliteration of peripancreatic fat plane (60%), biliary dilation (30%), and secondary pancreatitis (18%). Liver and lymph nodes metastases were found in 27 patients (68%) at the time of CT scanning.

  18. The accompanying adult: authority to give consent in the UK.

    Science.gov (United States)

    Lal, Seema Madhur Lata; Parekh, Susan; Mason, Carol; Roberts, Graham

    2007-05-01

    Children may be accompanied by various people when attending for dental treatment. Before treatment is started, there is a legal requirement that the operator obtain informed consent for the proposed procedure. In the case of minors, the person authorized to give consent (parental responsibility) is usually a parent. To ascertain if accompanying persons of children attending the Department of Paediatric Dentistry at the Eastman Dental Hospital, London were empowered to give consent for the child's dental treatment. A total of 250 accompanying persons of children attending were selected, over a 6-month period. A questionnaire was used to establish whether the accompanying person(s) were authorized to give consent. The study showed that 12% of accompanying persons had no legal authority to give consent for the child's dental treatment. Clinicians need to be aware of the status of persons accompanying children to ensure valid consent is obtained.

  19. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... liver, kidney, pancreatic, uterine or ovarian abnormalities, the evaluation and diagnosis with MRI may be preferable over CT scanning. top of page Additional Information and Resources RTAnswers.org: Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal ...

  20. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... x-rays, particularly of soft tissues and blood vessels. A CT scan of the face produces images that also show a patient's paranasal sinus cavities. The paranasal sinuses are hollow, air-filled spaces located within the bones of the ...

  1. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  2. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  3. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  4. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... The teddy bear denotes child-specific content. Related Articles and Media Ultrasound - Abdomen X-ray (Radiography) - Lower GI Tract X-ray (Radiography) - Upper GI Tract Colorectal Cancer Images related to Computed Tomography (CT) - Abdomen and ...

  5. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... and Resources RTAnswers.org: Radiation Therapy for Bladder Cancer Radiation Therapy for Colorectal Cancer top of page This page was reviewed on ... with caption Pediatric Content Some imaging tests and treatments have special ... Cancer Images related to Computed Tomography (CT) - Abdomen and ...

  6. Abdominal aspergillosis: CT findings

    Energy Technology Data Exchange (ETDEWEB)

    Yeom, Suk Keu, E-mail: pagoda20@hanmail.net [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Hye Jin, E-mail: kimhyejin@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Byun, Jae Ho, E-mail: jhbyun@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Kim, Ah Young, E-mail: aykim@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Lee, Moon-Gyu, E-mail: mglee@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of); Ha, Hyun Kwon, E-mail: hkha@amc.seoul.kr [Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Poongnap2-dong, Songpa-gu, Seoul, 138-736 (Korea, Republic of)

    2011-03-15

    Objective: In order to retrospectively evaluate the CT findings of abdominal aspergillosis in immunocompromised patients. Materials and methods: CT scans were reviewed with regard to the sites, number, morphologic appearance, attenuation, and the contrast enhancement patterns of the lesions in six patients (5 women, 1 man; mean age, 43.4 years; range, 23-59 years) with pathologically proved abdominal aspergillosis by two gastrointestinal radiologists in consensus. Medical records were also reviewed to determine each patient's clinical status and outcome. Results: All patients were immunocompromised state: 4 patients received immunosuppressive therapy for solid organ transplantation and 2 patients received chemotherapy for acute myeloid leukemia. Aspergillosis involved blood vessels (n = 3), liver (n = 2), spleen (n = 2), gastrointestinal tract (n = 2), native kidney (n = 1), transplanted kidney (n = 1), peritoneum (n = 1), and retroperitoneum (n = 1). CT demonstrated solid organ or bowel infarction or perforation secondary to vascular thrombosis or pseudoaneurysm, multiple low-attenuating lesions of solid organs presenting as abscesses, concentric bowel wall thickening mimicking typhlitis, or diffuse or nodular infiltration of the peritoneum and retroperitoneum. Conclusion: Familiarity with findings commonly presenting as angioinvasive features or abscesses on CT, may facilitate the diagnosis of rare and fatal abdominal aspergillosis.

  7. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  8. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  9. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted ... at and passes through the part of the body being examined, recording an image on a special electronic image recording plate. Bones ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  11. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  12. Computed Tomography (CT) -- Sinuses

    Science.gov (United States)

    ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  13. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  14. Computed Tomography (CT) - Spine

    Science.gov (United States)

    ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is always a slight chance of cancer ...

  15. Body CT (CAT Scan)

    Science.gov (United States)

    ... You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove bras ... and surgical biopsy. No radiation remains in a patient's body after a CT ... side effects. Risks There is no conclusive evidence that radiation at ...

  16. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. A diagnosis determined by CT scanning may eliminate the need for exploratory surgery and surgical biopsy. No radiation remains in a patient's body after ...

  17. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as needle biopsies and needle aspirations of many areas of the ...

  18. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... can be performed if you have an implanted medical device of any kind, unlike MRI. CT imaging provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as needle biopsies and needle aspirations of many areas of the ...

  19. Hepatic angiosarcoma: CT findings

    Institute of Scientific and Technical Information of China (English)

    余日胜; 章士正; 华建明

    2003-01-01

    @@ Hepatic angiosarcoma is a rare malignant vascular tumor. Accurate preoperative diagnosis of this tumor is very difficult if the patient does not have any history of exposure to specific carcinogens including thorotrast, arsenicals and vinyl chloride monomer. We describe CT findings in two cases of hepatic angiosarcoma in combination with a review of the literature.

  20. CT image of thymoma

    Energy Technology Data Exchange (ETDEWEB)

    Morioka, Nobuo; Shudo, Yuji; Jahana, Masanobu; Matsuki, Tsutomu; Kotani, Kazuhiko (Tottori Univ., Yonago (Japan). School of Medicine)

    1983-10-01

    Computor tomographic images of 11 patients who had had thymectomy for myasthenia gravis or thymoma were studied retrospectively. Of those 11 patients, malignant thymoma and benign condition including normal thymus were 6 and 5 respectively. On CT, calcification and lobulation with irregular margin seem to be reliable findings of malignancy. Defect or abscence of fatty plane and non-homogenous density are ancillary.

  1. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  2. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  3. CT urography and hematuria

    DEFF Research Database (Denmark)

    Bretlau, Thomas; Hansen, Rasmus H; Thomsen, Henrik S

    2015-01-01

    (15%) other disease (i.e. infection or anomaly) was found. No abnormalities were found at CT urography in 455 (58%) of the patients with hematuria. Lesions were found more frequently in patients with visible hematuria than in patients with non-visible hematuria (48% vs. 29%). No malignant tumor...

  4. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... circumstances. For example, sometimes a parent wearing a lead shield may stay in the room with their child. However, the technologist will always be able to see, hear and speak with you through ... to wear a lead apron to minimize radiation exposure. After a CT ...

  5. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... circumstances. For example, sometimes a parent wearing a lead shield may stay in the room with their child. However, the technologist will always be able to see, hear and speak with you through ... to wear a lead apron to minimize radiation exposure. After a CT ...

  6. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... circumstances. For example, sometimes a parent wearing a lead shield may stay in the room with their child. However, the technologist will always be able to see, hear and speak with you through ... to wear a lead apron to minimize radiation exposure. After a CT ...

  7. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  8. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... Rotating around you, the x-ray tube and electronic x-ray detectors are located opposite each other ... another on an x-ray film or CT electronic image. In a conventional x-ray exam, a ...

  10. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  11. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available Toggle navigation Test/Treatment Patient Type Screening/Wellness Disease/Condition Safety En Español More Info Images/Videos About Us News Physician ... CT or CAT scan, is a diagnostic medical test that, like traditional x-rays, produces multiple images ...

  12. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... is National Prostate Cancer Awareness Month Recently posted: Medical Imaging Costs Magnetoencephalography (MEG) Video: Coronary CT Angiography Video: ... is National Prostate Cancer Awareness Month Recently posted: Medical Imaging Costs Magnetoencephalography (MEG) Video: Coronary CT Angiography Video: ...

  13. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... also be discussed with the CT technologist or nurse at the time of the CT examination. If ... difficulty breathing, you should notify the technologist or nurse, as it may indicate a more severe allergic ...

  14. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... Site Index A-Z Spotlight Recently posted: Anal Cancer Facet Joint Block Video: CT of the Heart ... Therapy Video: CT of the Sinuses Video: Colorectal Cancer Screening Radiology and You Sponsored by Image/Video ...

  15. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... for a recovery period and will be given instructions on any limitations in activity for the day. ... Images related to Children's (Pediatric) CT (Computed Tomography) Videos related to Children's (Pediatric) CT (Computed Tomography) Sponsored ...

  16. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... What are the limitations of Children's CT? What is Children's CT? Computed tomography, more commonly known as ... the body being studied. top of page How is the procedure performed? The technologist begins by positioning ...

  17. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... Computed Tomography) Pediatric computed tomography (CT) is a fast, painless exam that uses special x-ray equipment ... period of time. Modern CT scanners are so fast that they can scan through large sections of ...

  18. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ... prescribed procedure with your doctor, the medical facility staff and/or your insurance provider to get a ...

  19. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... Us News Physician Resources Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography ( ... more commonly known as a CT or CAT scan, is a diagnostic medical test that, like traditional ...

  20. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... Sometimes ultrasound is substituted for CT as a method of imaging in these procedures in children. A ...

  1. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... such as inflammation of the bronchi (breathing passages) birth defects trauma to blood vessels or lung CT ... used to: diagnose appendicitis detect abdominal tumors or birth defects In the pelvic region, CT scans can ...

  2. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... top of page What are the benefits vs. risks? Benefits Using a multidetector CT unit to examine ... CT scans should have no immediate side effects. Risks The risk of serious allergic reaction to contrast ...

  3. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... scanners to obtain multiple slices in a single rotation. These scanners, called "multislice CT" or "multidetector CT," ... special pediatric considerations. The teddy bear denotes child-specific content. Related Articles and Media Radiation Dose in ...

  4. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... sensitive to radiation, they should have a CT study only if it is essential for making a diagnosis and should not have repeated CT studies unless absolutely necessary. top of page What are ...

  5. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... CT is used to help diagnose a wide range of conditions due to injury or illness. In ... a cost-effective imaging tool for a wide range of clinical problems. CT is less sensitive to ...

  6. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... Computed Tomography) Pediatric computed tomography (CT) is a fast, painless exam that uses special x-ray equipment ... period of time. Modern CT scanners are so fast that they can scan through large sections of ...

  7. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... Professions Site Index A-Z Children's (Pediatric) CT (Computed Tomography) Pediatric computed tomography (CT) is a fast, painless ... table. Other imaging methods such as ultrasound or magnetic resonance (MR) imaging can provide pictures of certain areas ...

  8. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... scanner. top of page How does the procedure work? In many ways, CT scanning is like other ... sensitive to radiation, they should have a CT study only if it is essential for making a ...

  9. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... to wear a lead apron to prevent radiation exposure. The radiation dose directly outside of the CT ... However, CT scans result in a low-level exposure. Whether such levels cause cancer is debatable but ...

  10. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... is National Breast Cancer Awareness Month Recently posted: Medical Imaging Costs Magnetoencephalography (MEG) Video: Coronary CT Angiography ... is National Breast Cancer Awareness Month Recently posted: Medical Imaging Costs Magnetoencephalography (MEG) Video: Coronary CT Angiography ...

  11. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... Recently posted: Medical Imaging Costs Magnetoencephalography (MEG) Video: Coronary CT Angiography Video: Myelography Video: CT of the Heart Video: Radioiodine I-131 Therapy November 8 is ...

  12. Your Radiologist Explains CT Colonography

    Medline Plus

    Full Text Available ... exam, your doctor may restrict you to clear fluids and give you instructions on clearing your colon ... CT Angiography Video: Myelography Video: CT of the Heart Video: Radioiodine I-131 Therapy Radiology and You ...

  13. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... CT scans that are not clearly needed. Another strategy is to consider other tests, such as MRI ... sensitive to radiation, they should have a CT study only if it is essential for making a ...

  14. Children's (Pediatric) CT (Computed Tomography)

    Medline Plus

    Full Text Available ... of page What are some common uses of the procedure? CT is used to help diagnose a ... top of page How should we prepare for the CT scan? Your child should wear comfortable, loose- ...

  15. Developing Adaptive Elearning: An Authoring Tool Design

    Directory of Open Access Journals (Sweden)

    Said Talhi

    2011-09-01

    Full Text Available Adaptive hypermedia is the answer to the lost in hyperspace syndrome, where the user has normally too many links to choose from, and little knowledge about how to proceed and select the most appropriate ones to him/her. Adaptive hypermedia thus offers a selection of links or content most appropriate to the user. Until very recently, little attention has been given to the complex task of authoring materials for Adaptive Educational Hypermedia. An author faces a multitude of problems when creating a personalized, rich learning experience for each user. The purpose of this paper is to present an authoring tool for adaptive hypermedia based courses. Designed to satisfy guidelines of accessibility of the W3C recommendation for authors and learners that present disabilities, the authoring tool allows several authors geographically dispersed to produce such courses together. It consists of a shared workspace gathering all tools necessary to the cooperative development task.

  16. Seventh-generation CT

    Science.gov (United States)

    Besson, G. M.

    2016-03-01

    A new dual-drum CT system architecture has been recently introduced with the potential to achieve significantly higher temporal resolution than is currently possible in medical imaging CT. The concept relies only on known technologies; in particular rotation speeds several times higher than what is possible today could be achieved leveraging typical x-ray tube designs and capabilities. However, the architecture lends itself to the development of a new arrangement of x-ray sources in a toroidal vacuum envelope containing a rotating cathode ring and a (optionally rotating) shared anode ring to potentially obtain increased individual beam power as well as increase total exposure per rotation. The new x-ray source sub-system design builds on previously described concepts and could make the provision of multiple conventional high-power cathodes in a CT system practical by distributing the anode target between the cathodes. In particular, relying on known magnetic-levitation technologies, it is in principle possible to more than double the relative speed of the electron-beam with respect to the target, thus potentially leading to significant individual beam power increases as compared to today's state-of-the-art. In one embodiment, the proposed design can be naturally leveraged by the dual-drum CT concept previously described to alleviate the problem of arranging a number of conventional rotating anode-stem x-ray tubes and power conditioners on the limited space of a CT gantry. In another embodiment, a system with three cathodes is suggested leveraging the architecture previously proposed by Franke.

  17. CT examinations of healing fractures

    Energy Technology Data Exchange (ETDEWEB)

    Nutz, V.; Uexkuell-Gueldenband, V. v.

    1988-10-01

    The CT appearances of healing fractures were studied following tibial osteotomy in a dog. Traditional radiological investigations and CT were carried out until healing was complete; CT showed callus on the ninth day, whereas radiographs only showed it after 19 days. After 32 days, callus filled nearly the entire medullary cavity. Similar observations were made in several human situations. CT demonstrates interposed material in the fracture very clearly, even if there is marked callus formation within the fracture.

  18. Personal Belongings--A Positive Effect?

    Science.gov (United States)

    Millard, Peter H.; Smith, Chris S.

    1981-01-01

    The effect of personal belongings on perceptions of the elderly in institutions was tested through color slides in two groups of medical students. The elderly person surrounded by personal belongings was perceived in a less negative way than the same person in bare surroundings. (Author)

  19. The Lure of Authority

    OpenAIRE

    Fehr, Ernst

    2010-01-01

    The lecture was delivered on 16 June 2010. The lecture rests on the paper by Ernst Fehr, Holger Herz and Tom Wilkening on The Lure of Authority: Motivation and Incentive Effects of Power. Ernst Fehr, University of Zurich Power and authority permeate political, social and economic life but still little is known empirically about the origins and consequences of authority. In this paper we tackle this question experimentally by implementing a simple version of Aghion-Tirole (1997) in the labo...

  20. Authoring tool evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, A.L.; Klenk, K.S.; Coday, A.C.; McGee, J.P.; Rivenburgh, R.R.; Gonzales, D.M.; Mniszewski, S.M.

    1994-09-15

    This paper discusses and evaluates a number of authoring tools currently on the market. The tools evaluated are Visix Galaxy, NeuronData Open Interface Elements, Sybase Gain Momentum, XVT Power++, Aimtech IconAuthor, Liant C++/Views, and Inmark Technology zApp. Also discussed is the LIST project and how this evaluation is being used to fit an authoring tool to the project.

  1. Respect My Authority

    Directory of Open Access Journals (Sweden)

    Jonathan Gorman

    2008-03-01

    Full Text Available Some simple modifications to VuFind, an open source library resource portal, improve the retrieval of both lists of works and information about authors from Wikipedia. These modifications begin to address ways that current "next-generation" catalogs fail to fully harness all of the bibliographic tools available for indexing and presenting author information. Simple methods such as those described in this article, which make use of full headings for authors, can offer marked improvements to these systems.

  2. Technical aspects of CT scanning.

    Science.gov (United States)

    Maravilla, K R; Pastel, M S

    1978-01-01

    The advent of computed tomography (CT) has initiated a technological revolution which continues to the present time. A brief review of basic principles of CT scanning is presented, and the evolution of modern CT scanner systems is traced. Some early indications of future trends are also presented.

  3. Venous thromboembolic disease. CT evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Goodman, L. R. [Medical College of Wisconsin, Pulmonary Medicine and Intensive Care, Dept. of Diagnostic Radiology, Milwaukee, WI (United States)

    2001-12-01

    Helical and multidetector CT has proven to be a valuable imaging modality for both pulmonary embolism and deep venous thrombosis. This paper will review the sensitivity and specificity of CT and discuss diagnostic algorithms utilizing CT and more established imaging technologies.

  4. Instructions for authors

    Directory of Open Access Journals (Sweden)

    Editors Editorial Board

    2012-11-01

    Full Text Available

    INSTRUCTIONS FOR AUTHORS
    Author Guidelines
    Authors must submit their papers via email to brain@edusoft.ro (please! or they can create an account and submit their papers online, at www.brain.edusoft.ro. Submited papers must be written in DOC format (Microsoft Word document, in as clear and as simple as possible English. Preferred maximum paper length for the papers is 20 pages, including figures.
    The template for the paper is at this address:
    http://www.edusoft.ro/Template_for_BRAIN.docRAIN vol. 3, issue 3, Instructions for authors

  5. Parental authority questionnaire.

    Science.gov (United States)

    Buri, J R

    1991-08-01

    A questionnaire was developed for the purpose of measuring Baumrind's (1971) permissive, authoritarian, and authoritative parental authority prototypes. It consists of 30 items per parent and yields permissive, authoritarian, and authoritative scores for both the mother and the father; each of these scores is derived from the phenomenological appraisals of the parents' authority by their son or daughter. The results of several studies have supported the Parental Authority Questionnaire as a psychometrically sound and valid measure of Baumrind's parental authority prototypes, and they have suggested that this questionnaire has considerable potential as a valuable tool in the investigation of correlates of parental permissiveness, authoritarianism, and authoritativeness.

  6. A system for personality and happiness detection

    National Research Council Canada - National Science Library

    Saez, Yago; Navarro, Carlos; Mochon, Asuncion; Isasi, Pedro

    2014-01-01

    This work proposes a platform for estimating personality and happiness. Starting from Eysenck's theory about human's personality, authors seek to provide a platform for collecting text messages from social media (Whatsapp...

  7. The Authors Reply

    Science.gov (United States)

    File, Kieran A.; Adams, Rebecca

    2010-01-01

    This article presents the authors' reply to Beniko Mason and Stephen Krashen's comments on their recent article published in "TESOL Quarterly." Mason and Krashen have provided an interesting reinterpretation of the authors' results and have also brought up several valid points regarding the efficiency of vocabulary learning from instruction,…

  8. The Voice of Authority

    Science.gov (United States)

    Wetterlund, Kris

    2012-01-01

    In the last part of 2011, conversations swirled around the Internet and print about the assault on museum authority. The Marcus Institute for Digital Education in the Arts (MIDEA) summarized some of the discussion in their blog entry "The Participatory Museum and a New Authority." Other sites joined in the discussion, for example, the Museum Geek…

  9. Boerhaave: Author and Editor *

    Science.gov (United States)

    Lindeboom, G. A.

    1974-01-01

    The many facets of Herman Boerhaave's life are presented. He was a renowned teacher, physician, author, and editor. Discussed here are his activities as cataloger of the Vossius Collection, author of books on chemistry, botany, and medicine, and as editor of works by Vesalius and early Greek medical writers. Printing and bookselling in Leiden during Boerhaave's era are described. Images PMID:4596962

  10. Instructions for Authors

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    <正>1.Items of the paper Title,author’s name and working unit,abstract,key words,text and reference. 2.Author and working unit Entitled authors should be those involved in the research and would be able to answer relevant questions.The working units,cities and

  11. On Responsibility and Authority

    NARCIS (Netherlands)

    Ahaus, Kees; van de Water, Henricus

    1994-01-01

    Defining authorities is a topic of current interest in quality management. One of the conditions in the ISO 9000-series deals with this topic. In this paper we will first examine the concepts of authority and responsibility, which are not at all univocally defined in organization literature. We will

  12. Multimedia Authoring and Annotation

    NARCIS (Netherlands)

    Bulterman, D.C.A.; Cesar Garcia, P.S.; Munson, E.; Pimentel, M.G.C.

    2014-01-01

    With the massive amount of captured multimedia, authoring is more relevant than ever. Multimedia content is available in many settings including the web, mobile devices, desktop applications, as well as games and interactive TV. The authoring and production of multimedia documents demands attention

  13. Preoperative CT scanning of 70 cases of rheumatic valvular disease

    Energy Technology Data Exchange (ETDEWEB)

    Take, Akira; Matuzaki, Shigeru; Oki, Shinichi (Jichi Medical School, Minamikawachi, Tochigi (Japan)) (and others)

    1992-05-01

    Seventy patients with rheumatic valvular disease were evaluated with preoperative CT scanning. The correlation of the obtained CT images to the operative findings were examined. Left atrial thrombi were found in 24 cases at the operation. CT scan had detected thrombi in 19 cases (79.2%) and echocardiography in 15 (62.5%). CT failed to find them in 5 cases in which the left atrial thrombi were less than 3 g. Echocardiogram, however, failed to detect thrombi in 9 cases, the largest being 14 g. There were 15 cases with left atrial calcification, in which 10 cases had left atrial thrombi. Nine cases out of these 10 cases had rough left atrial surface after thrombectomy. Early postoperative CT of 10 with left atrial calcification showed recurrent left atrial thrombi in 4 (40%) cases. Mitral valve calcification was found in 42 cases during operation. CT scan was able to detect it in 40 (95.2%), while echocardiogram detected in 34 cases (81.0%) (p<0.05). All mitral valves with calcification required replacement. Out of 30 cases with non calcified mitral valves, 9 underwent OMC, and the other 21 underwent mitral valve replacement. Aortic valve calcification was found in 9 out of 11 cases of aortic stenosis. All has been diagnosed by CT scan. In conclusion, 1. in detecting the left atrial thrombi, CT scan was superior to echo-cardiography, and provided useful information for planning the operative procedure including atrial approach and valvular manipulation, 2. CT scan could detect calcification of left atrial wall which had high incidence of thrombus formation and rough left atrial surface, 3. CT scan could detect calcification of both mitral and aortic valve, and showed the severity of valvular structural changes. (author).

  14. CT classification of acetabular fractures

    Energy Technology Data Exchange (ETDEWEB)

    Marincek, B.; Porcellini, B.; Robotti, G.

    1984-05-01

    The contribution of computed tomography (CT) in classifying acetabular fractures was analysed retrospectively in 33 cases. CT and plain radiography classification agreed in 27 cases (82%). CT revealed more extensive fractures in 6 patients (thereof 5 patients with associated fractures). In 10 patients (thereof 9 patients with associated fractures) CT showed intraarticular fragments; radiographically intraarticular fragments were seen only in 2 patients and suspected in 4. CT is of considerable aid in defining the fracture pattern. It should be used mainly in patients with radiographically difficult interpretable associated fractures in order to assess preoperatively the weight-bearing part of the acetabulum, the degree of displacement and the presence of intraarticular fragments.

  15. Dynamic CT myocardial perfusion imaging.

    Science.gov (United States)

    Caruso, Damiano; Eid, Marwen; Schoepf, U Joseph; Jin, Kwang Nam; Varga-Szemes, Akos; Tesche, Christian; Mangold, Stefanie; Spandorfer, Adam; Laghi, Andrea; De Cecco, Carlo N

    2016-10-01

    Non-invasive cardiac imaging has rapidly evolved during the last decade due to advancements in CT based technologies. Coronary CT angiography has been shown to reliably assess coronary anatomy and detect high risk coronary artery disease. However, this technique is limited to anatomical assessment, thus non-invasive techniques for functional assessment of the heart are necessary. CT myocardial perfusion is a new CT based technique that provides functional assessment of the myocardium and allows for a comprehensive assessment of coronary artery disease with a single modality when combined with CTA. This review aims to discuss dynamic CT myocardial perfusion as a new technique in the assessment of CAD.

  16. The efficacy of (18)F-FDG PET/CT and (67)Ga SPECT/CT in diagnosing fever of unknown origin.

    Science.gov (United States)

    Hung, Bor-Tau; Wang, Pei-Wen; Su, Yu-Jih; Huang, Wen-Chi; Chang, Yen-Hsiang; Huang, Shu-Hua; Chang, Chiung-Chih

    2017-09-01

    Fever of unknown origin (FUO) is a diagnostic challenge. This study aimed to assess the efficacy of fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) and gallium-67 single-photon emission computed tomography/computed tomography ((67)Ga SPECT/CT) in diagnosing FUO. A total of 68 patients with FUO underwent (18)F-FDG PET/CT and (67)Ga SPECT/CT from January 2013 through May 2016. Images were read independently. The imaging results were compared with the final diagnosis and categorized as helpful for diagnosis or non-contributory to diagnosis in the clinical setting. Associations between categorical variables were evaluated with the chi-square test or Fisher's exact test. Ten of the 68 patients were excluded. An infectious underlying disease was found in 23 patients. A malignant disorder was the cause of FUO in 10 patients. Non-infectious inflammatory disease was found in 11 patients. Adrenal insufficiency was the cause of FUO in two patients. The cause of FUO was not found for 12 patients. A high false-positive rate of 44% (7/16) was observed for (18)F-FDG PET/CT, while a high false-negative rate of 55% (23/42) was observed for (67)Ga SPECT/CT. (18)F-FDG PET/CT studies depicted all (67)Ga-avid lesions. The sensitivity (79% vs. 45%) and clinical contribution (72% vs. 55%) of (18)F-FDG PET/CT in diagnosing FUO were significantly higher than those of (67)Ga SPECT/CT (pPET/CT is superior to (67)Ga SPECT/CT in the work-up of patients with FUO. With its rapid results and superior sensitivity, (18)F-FDG PET/CT may replace (67)Ga SPECT/CT where this technique is available. Copyright © 2017 The Author(s). Published by Elsevier Ltd.. All rights reserved.

  17. Bibliographer in Search of an Author.

    Science.gov (United States)

    Roberts, Carol

    1989-01-01

    Describes the search strategies and resources used to compile an annotated bibliography on Canadian author Timothy Findley. Materials referenced in the bibliography include television and radio shows, manuscripts, personal journals and correspondence, newspaper clippings, foreign language editions of novels, photographs, drawings, and works that…

  18. Author Detection on a Mobile Phone

    Science.gov (United States)

    2011-03-01

    are the Federalist Papers and the works of Shakespeare . In the case of the Federalist Papers, the likely pool of authors was known, but exactly which...of Shakespeare , some scholars have expressed doubts that all of Shakespeare’s collected works were really written by only one person.[8] Au- thor

  19. Investigating CT to CBCT image registration for head and neck proton therapy as a tool for daily dose recalculation

    Energy Technology Data Exchange (ETDEWEB)

    Landry, Guillaume, E-mail: g.landry@lmu.de [Department of Medical Physics, Ludwig-Maximilians-University, Munich D85748, Germany and Department of Radiation Oncology, Ludwig-Maximilians-University, Munich D81377 (Germany); Nijhuis, Reinoud; Thieke, Christian; Reiner, Michael; Ganswindt, Ute; Belka, Claus [Department of Radiation Oncology, Ludwig-Maximilians-University, Munich D81377 (Germany); Dedes, George; Handrack, Josefine; Parodi, Katia [Department of Medical Physics, Ludwig-Maximilians-University, Munich D85748 (Germany); Janssens, Guillaume; Orban de Xivry, Jonathan [ICTEAM, Université Catholique de Louvain, Louvain-La-Neuve B1348 (Belgium); Kamp, Florian; Wilkens, Jan J. [Department of Radiation Oncology, Technische Universität München, Klinikum rechts der Isar, Munich D81675, Germany and Physik-Department, Technische Universität München, Garching D85748 (Germany); Paganelli, Chiara; Riboldi, Marco; Baroni, Guido [Dipartimento di Elettronica Informazione e Bioingegneria, Politecnico di Milano, Milan 20133 (Italy)

    2015-03-15

    Purpose: Intensity modulated proton therapy (IMPT) of head and neck (H and N) cancer patients may be improved by plan adaptation. The decision to adapt the treatment plan based on a dose recalculation on the current anatomy requires a diagnostic quality computed tomography (CT) scan of the patient. As gantry-mounted cone beam CT (CBCT) scanners are currently being offered by vendors, they may offer daily or weekly updates of patient anatomy. CBCT image quality may not be sufficient for accurate proton dose calculation and it is likely necessary to perform CBCT CT number correction. In this work, the authors investigated deformable image registration (DIR) of the planning CT (pCT) to the CBCT to generate a virtual CT (vCT) to be used for proton dose recalculation. Methods: Datasets of six H and N cancer patients undergoing photon intensity modulated radiation therapy were used in this study to validate the vCT approach. Each dataset contained a CBCT acquired within 3 days of a replanning CT (rpCT), in addition to a pCT. The pCT and rpCT were delineated by a physician. A Morphons algorithm was employed in this work to perform DIR of the pCT to CBCT following a rigid registration of the two images. The contours from the pCT were deformed using the vector field resulting from DIR to yield a contoured vCT. The DIR accuracy was evaluated with a scale invariant feature transform (SIFT) algorithm comparing automatically identified matching features between vCT and CBCT. The rpCT was used as reference for evaluation of the vCT. The vCT and rpCT CT numbers were converted to stopping power ratio and the water equivalent thickness (WET) was calculated. IMPT dose distributions from treatment plans optimized on the pCT were recalculated with a Monte Carlo algorithm on the rpCT and vCT for comparison in terms of gamma index, dose volume histogram (DVH) statistics as well as proton range. The DIR generated contours on the vCT were compared to physician-drawn contours on the rpCT

  20. Dynamic CT in early stage of cerebral ischemia; Clinical usefulness of dynamic CT for rapid evaluation of patients considered for emergency cerebral revascularization

    Energy Technology Data Exchange (ETDEWEB)

    Aritake, Koichi; Sano, Keiji (Fuji Brain Inst. Hospital, Fujinomiya, Shizuoka (Japan))

    1990-12-01

    In the present study, we correlated collateral flow patterns derived from dynamic CT (DCT) and the evolution of cerebral infarction in patients with ischemic episodes and analyzed the efficacy of emergency cerebral revascularization (ECR) in preventing infarction. Forty-four patients, all of whom presented cerebral arterial occlusion without showing any hypodense areas on their initial CT scans, were examined. Eleven patients underwent ECR. Time-density curves (TDCs) within 239 different regions in territories of occluded arteries were derived from DCT. The degree of collateral flow and delay of circulation time were assessed, comparing peak values and peak times of TDCs on the occluded side with those in corresponding regions on the non-occluded side. Hemodynamic patterns of TDCs were classified into the following three types: Type 1 - the residual flow was considerably preserved with markedly delayed circulation time; Type 2 - the collateral flow was considerably preserved, but its circulation time was minimally or moderately delayed; and Type 3 - the residual flow was minimal or moderate with or without slowing of circulation time. In the medically-treated group, follow-up CT scans demonstrated infarction in 89% of Type 1, 6% of Type 2 and 97% of Type 3. In the surgically-treated group, infarction developed in 20% of Type 1, 0% of Type 2 and 95% of Type 3. The hemodynamic pattern map, demonstrated with the advent of the personal computer, was clinically useful in predicting the appearance and extent of infarction and judging the prognosis of patients, even immediately after the ischemic ictus. It would appear that patients whose preoperative DCT discloses a Type 1 perfusion pattern can be expected to benefit the most from ECR. (author).

  1. CT colonography: an update

    Energy Technology Data Exchange (ETDEWEB)

    Aschoff, Andrik J.; Ernst, Andrea S.; Brambs, Hans-Juergen; Juchems, Markus S. [University Hospitals of Ulm, Diagnostic and Interventional Radiology, Ulm (Germany)

    2008-03-15

    Computed tomographic (CT) colonography (CTC) - also known as ''virtual colonoscopy'' - was first described more than a decade ago. As advancements in scanner technology and three-dimensional (3D) postprocessing helped develop this method to mature into a potential option in screening for colorectal cancer, the fundamentals of the examination remained the same. It is a minimally invasive, CT-based procedure that simulates conventional colonoscopy using 2D and 3D computerized reconstructions. The primary aim of CTC is the detection of colorectal polyps and carcinomas. However, studies reveal a wide performance variety in regard to polyp detection, especially for smaller polyps. This article reviews the available literature, discusses established indications as well as open issues and highlights potential future developments of CTC. (orig.)

  2. CT findings in rhinocerebral mucormycosis and aspergillosis

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Dong Ik; Suh, Jung Ho; Lee, Jong Doo; Lee, Kyu Chang [Yeonsei University College of Medicine, Seoul (Korea, Republic of)

    1986-12-15

    Invasive aspergillosis or mucormycosis of the paranasal sinuses involving the cranial cavity is termed rhinocerebral mycosis, which is often difficult to differentiate from malignancy. Prognosis of rhinocerebral mycosis is disastrous and usually fatal. The authors herein report 6 cases of rhinocerebral mycosis; two of them were mucormycosis and four were aspergillosis histopathologically. Main CT features are nodular mucosal thickening in the multiple sites of the paranasal sinuses that extend to orbital apex or cavernous sinus through focal destruction of bony wall. In spite of their invasiveness beyond bony boundary, destruction is not so remarkable and it is always accompanied by bony sclerosis. Awareness of these disease and CT patterns discussed in this report should be helpful in leading to early biopsy and treatment.

  3. High-resolution CT of otosclerosis

    Energy Technology Data Exchange (ETDEWEB)

    Dewen, Yang; Kodama, Takao; Tono, Tetsuya; Ochiai, Reiji; Kiyomizu, Kensuke; Suzuki, Yukiko; Yano, Takanori; Watanabe, Katsushi [Miyazaki Medical Coll., Kiyotake (Japan)

    1997-11-01

    High-resolution CT (HRCT) scans of thirty-two patients (60 ears) with the clinical diagnosis of fenestral otosclerosis were evaluated retrospectively. HRCT was performed with 1-mm-thick targeted sections and 1-mm (36 ears) or 0.5-mm (10 ears) intervals in the semiaxial projection. Seven patients (14 ears) underwent helical scanning with a 1-mm slice thickness and 1-mm/sec table speed. Forty-five ears (75%) were found to have one or more otospongiotic or otosclerotic foci on HRCT. In most instances (30 ears), the otospongiotic foci were found in the region of the fissula ante fenestram. No significant correlations between CT findings and air conduction threshold were observed. We found a significant relationship between lesions of the labyrinthine capsule and sensorineural hearing loss. We conclude that HRCT is a valuable modality for diagnosing otosclerosis, especially when otospongiotic focus is detected. (author)

  4. Personality Disorders

    Science.gov (United States)

    Personality disorders are a group of mental illnesses. They involve long-term patterns of thoughts and behaviors ... serious problems with relationships and work. People with personality disorders have trouble dealing with everyday stresses and ...

  5. Authoritarian Personality Traits Among Students

    Science.gov (United States)

    Dunham, J.

    1973-01-01

    The results are reported of an investigation into the social attitudes of the total population (800) of one English university using Adorno's F scale to measure authoritarian personality traits. (Author)

  6. Measurement of normal cervical spinal cord in metrizamide CT myelography

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Fumio; Koyama, Tsunemaro; Aii, Heihachirou

    1985-04-01

    The shape of the spinal cord is the most important factor in diagnosis of spinal disorders by metrizamide CT myelography (met. CT). Even in cases where the spinal cord looks normal in shape its size might be abnormal, for example in cases with spinal cord atrophy, syringomyelia, intramedullary tumor and several other conditions. In detecting the slightest abnormality in such cases, it is absolutely necessary to have in hand the knowledge of the nomal size of the spinal cord at each level. We measured, therefore, the sagittal and transverse diameters of the cervical spinal cord in 55 patients with no known lesions on met. CT. Comparing our results with those by others, we found some differences as to the size of the spinal cord. We assume that these differences are due to the differences in resolution of the CT scanners used. The size of the spinal cord tends to measure larger with a CT scanner with high resolution than with others. Previous authors reported that the size of the spinal cord would vary by window center settings. Our experimental results indicate, however, that window center settings do not significantly affect the measurements. It is concluded that the normal values of the spinal cord dimensions at each level somewhat differ by CT equipments used. One should have normal values with one's own equipment in hand in order to take full advantage of this sophisticated diagnostic technique. (author).

  7. The Appendix on CT

    Energy Technology Data Exchange (ETDEWEB)

    Whitley, S. [Sunnybrook Health Sciences Center, Toronto, Ontario (Canada); Barts and the Royal London, Royal London Hospital, Whitechapel, London (United Kingdom)], E-mail: siobhanwhitley@yahoo.co.uk; Sookur, P.; McLean, A.; Power, N. [Barts and the Royal London, Royal London Hospital, Whitechapel, London (United Kingdom)

    2009-02-15

    Appendicitis can be a difficult clinical diagnosis to make. A negative appendicectomy rate of 20% has traditionally been accepted as the consequences of appendiceal perforation can be grave. Cross-sectional imaging is increasingly being employed in the investigation of adults with suspected appendicitis. This review will demonstrate the appearance of the normal appendix on computed tomography (CT) and its appearance in a range of inflammatory and neoplastic processes including appendicitis, Crohn's disease, infections, and benign and malignant tumour000.

  8. Clinical application of CT and CT-guided percutaneous transthoracic needle biopsy in patients with indeterminate pulmonary nodules

    Energy Technology Data Exchange (ETDEWEB)

    Cardoso, Luciana Vargas; Souza Júnior, Arthur Soares, E-mail: fabianonatividade@terra.com.br [Rio Preto-Ultra-X Radiological Diagnosis Institute, São José do Rio Preto, SP (Brazil)

    2014-07-15

    Objective: To investigate the clinical application of CT and CT-guided percutaneous transthoracic needle biopsy (CT-PTNB) in patients with indeterminate pulmonary nodules (IPNs). Methods: We retrospectively studied 113 patients with PNs undergoing CT and CT-PTNB. Variables such as gender, age at diagnosis, smoking status, CT findings, and CT-PTNB techniques were analyzed. Data analysis was performed with the Student's t-test for independent samples the chi-square test, and normal approximation test for comparison of two proportions. Results: Of the 113 patients studied, 68 (60.2%) were male and 78 (69%) were smokers. The diameter of malignant lesions ranged from 2.6 cm to 10.0 cm. Most of the IPNs (85%) were located in the peripheral region. The biopsied IPNs were found to be malignant in 88 patients (77.8%) and benign in 25 (22.2%). Adenocarcinoma was the most common malignant tumor, affecting older patients. The IPN diameter was significantly greater in patients with malignant PNs than in those with benign IPNs (p < 0.001). Having regular contour correlated significantly with an IPN being benign (p = 0.022), whereas spiculated IPNs and bosselated IPNs were more often malignant (in 50.7% and 28.7%, respectively). Homogeneous attenuation and necrosis were more common in patients with malignant lesions (51.9% and 26.9%, respectively). Conclusions: In our sample, CT and CT-PTNB were useful in distinguishing between malignant and benign IPNs. Advanced age and smoking were significantly associated with malignancy. Certain CT findings related to IPNs (larger diameter, spiculated borders, homogeneous attenuation, and necrosis) were associated with malignancy. (author)

  9. Usefulness and limitations of CT examinations for deep anal fistulas

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Shinichiro; Matsumoto, Akihiko (Yokohama City Univ. (Japan). Faculty of Medicine); Kono, Kazuo (and others)

    1990-05-01

    Preoperative CT examination was performed on 30 cases of deep anal fistula and one case with an anal fistular carcinoma, and its usefulness and the limit of applicability were investigated. The deep anal fistula was recognized as a funicular or tumorous shadow on CT image. The differentiation of tumorous shadow and carcinoma was performed by biopsy under CT observation. While, there were also unidentifiable cases including three out of eight cases (37.5%) in II HC type and one out of 11 cases (9.1%) in II HC and III B types. Particularly, patients with a rectostenosis as the madn lesion could not be identified on CT images. The benefits of CT examination in deep anal fistula were compared with transrectal ultrasonography to establish a procedure for image diagnosis. Transrectal ultrasonography is performed as a routine test and CT examination is added when a lesion waving diameter of more than one cm is observed. Furthermore, active biopsy for patients with suspected carcinoma is planned under CT observation. (author).

  10. Drusen of the optic nerve head in CT imaging; Druzy tarczy nerwu wzrokowego w obrazie tomografii komputerowej

    Energy Technology Data Exchange (ETDEWEB)

    Kabula, S.; Stefaniak, E.; Burzynska-Makuch, M.; Boron, Z. [Akademia Medyczna, Bydgoszcz (Poland)

    1994-12-31

    The optic nerve head drusen are non-cell formations, which are almost always calcified. They have a characteristic feature in CT examination, what can be helpful in differentiation from calcifications of the other origin, located in the posterior globe. Authors present cases of the optic nerve head drusen with typical feature in CT examination. (author). 4 refs, 1 fig.

  11. Attenuation correction of myocardial SPECT images with X-ray CT. Effects of registration errors between X-ray CT and SPECT

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, Yasuyuki; Murase, Kenya [Osaka Univ., Suita (Japan). Graduate School of Medicine; Higashino, Hiroshi [Ehime Prefectural Imabari Hospital (Japan); Mochizuki, Teruhito [Ehime Univ., Matsuyama (Japan). School of Medicine; Motomura, Nobutoku [Toshiba Corp., Otawara, Tochigi (Japan). Medical Engineering Lab.

    2002-09-01

    Attenuation correction with an X-ray CT image is a new method to correct attenuation on SPECT imaging, but the effect of the registration errors between CT and SPECT images is unclear. In this study, we investigated the effects of the registration errors on myocardial SPECT, analyzing data from a phantom and a human volunteer. Registerion (fusion) of the X-ray CT and SPECT images was done with standard packaged software in three dimensional fashion, by using linked transaxial, coronal and sagittal images. In the phantom study, and X-ray CT image was shifted 1 to 3 pixels on the x, y and z axes, and rotated 6 degrees clockwise. Attenuation correction maps generated from each misaligned X-ray CT image were used to reconstruct misaligned SPECT images of the phantom filled with {sup 201}Tl. In a human volunteer, X-ray CT was acquired in different conditions (during inspiration vs. expiration). CT values were transferred to an attenuation constant by using straight lines; an attenuation constant of 0/cm in the air (CT value=-1,000 HU) and that of 0.150/cm in water (CT value=0 HU). For comparison, attenuation correction with transmission CT (TCT) data and an external {gamma}-ray source ({sup 99m}Tc) was also applied to reconstruct SPECT images. Simulated breast attenuation with a breast attachment, and inferior wall attenuation were properly corrected by means of the attenuation correction map generated from X-ray CT. As pixel shift increased, deviation of the SPECT images increased in misaligned images in the phantom study. In the human study, SPECT images were affected by the scan conditions of the X-ray CT. Attenuation correction of myocardial SPECT with an X-ray CT image is a simple and potentially beneficial method for clinical use, but accurate registration of the X-ray CT to SPECT image is essential for satisfactory attenuation correction. (author)

  12. Copyright Authorization Statement

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    正Should the article be accepted and published by Meteorological and Environmental Research,the author hereby grants exclu-sively to the editorial department of Meteorological and Environmental Research the digital reproduction

  13. Copyright Authorization Statement

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Should the article be accepted and published by Meteorological and Environmental Research,the author hereby grants exclu-sively to the editorial department of Meteorological and Environmental Research the digital reproduction

  14. Instructions for Authors

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    @@ GENERAL SUBMISSION INSTRUCTIONS These guidelines have been prepared in accordance with the Uniform Requirements for Manuscripts Submitted to Biomedical Journals.1 Authors should familiarize themselves with these requirements before submission.

  15. GUIDE TO AUTHOR

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Sciences in Cold and Arid Regions has no page chargesManuscript Submission.Sciences in Cold and Arid Regions operates an online submission and peer review system that allows authors to submit articles onlineand track their

  16. Personal Branding

    OpenAIRE

    Climent i Martí, Jordi

    2017-01-01

    Proyecto Fin de Grado leído en la Universidad Rey Juan Carlos en el curso académico 2013/2014. Director: Cristina Ayala del Pino Con este Trabajo Fin de Grado he querido aproximar el concepto del Personal Branding y de marca personal como la herramienta para diferenciarse en el entorno profesional. Partiendo con la definición del concepto, su construcción, el panorama actual, compaginar empleo con marca personal y acabando con la visión personal de un gurú de la Marca Person...

  17. Personal Finance: An Interdisciplinary Profession

    Science.gov (United States)

    Schuchardt, Jane; Bagwell, Dorothy C; Bailey, William C.; DeVaney, Sharon A.; Grable, John E.; Leech, Irene E.; Lown, Jean M.; Sharpe, Deanna L.; Xiao, Jing J.

    2007-01-01

    This commentary recommends that financial counseling and planning research, education, and practice be framed as an interdisciplinary profession called personal finance. Authors summarize the history of the profession and key theories providing the conceptual foundation. In order for the emerging profession of personal finance to achieve…

  18. Author Identification in Dialnet

    OpenAIRE

    Bergasa, Eduardo

    2012-01-01

    26 slides.-- Presentation delivered at the Topic Session "Identifiers". The presentation introduces the Dialnet Foundation, a public non-profit organisation founded 2009 as a Spin-off from the University of La Rioja in Spain, and the Dialnet portal whose database holds nearly 4M documents, mostly in Spanish. Authority control is one of the strategic Dialnet worklines and permanent cleaning work is done on the over 2.5M author records in cooperation with universities and other institutions....

  19. Personal identity and eastern thought

    Directory of Open Access Journals (Sweden)

    Correia Carlos João

    2009-01-01

    Full Text Available This paper aims to show that the problem of personal identity is a fundamental question of the classical Indian thought. Usually we tend to think that personal identity is a Western philosophical subject, and so we tend to forget the significance of the Self (Atman in Hinduism and even in Buddhism. The author shows how the Indian thought approached the question of personal identity and which was the singular solution outlined in the work consensually attributed to Gotama, the Buddha.

  20. Adaptive Personality Recogntion from Text

    OpenAIRE

    Celli, Fabio

    2012-01-01

    We address the issue of domain adaptation for automatic Personality Recognition from Text (PRT). The PRT task consists in the classification of the personality traits of some authors, given some pieces of text they wrote. The purpose of our work is to improve current approaches to PRT in order to extract personality information from social network sites, which is a really challenging task. We argue that current approaches, based on supervised learning, have several limitations for th...

  1. Postoperative assessment of surgical results using three dimensional surface reconstruction CT (3D-CT) in a craniofacial anomaly

    Energy Technology Data Exchange (ETDEWEB)

    Nishimura, Jiro; Sato, Kaoru; Nishimoto, Hiroshi; Tsukiyama, Takashi; Fujioka, Mutsuhisa; Akagawa, Tetsuya.

    1988-07-01

    In 1983, Michael W. Vannier and Jeffrey L. Marsh developed a computer method that reconstructs three dimensional (3D) born and soft tissue surfaces, given a high resolution CT scan-series of the facial skeleton. This method has been applied to craniofacial anomalies, basal encephaloceles, and musculoskeletal anomalies. In this study, a postoperative assessment of the craniofacial surgical results has been accomplished using this 3D-CT in 2 children with craniofacial dysmorphism. The authors discuss the advantages of this 3D-CT imaging method in the postoperative assessments of craniofacial anomalies. Results are detailed in the following listing : 1) a postoperative 3D-CT reveals the anatomical details corrected by the craniofacial surgery more precisely and stereographically than conventional radiological methods ; 2) secondary changes of the cranium after the surgery, such as bony formation in the area of the osteotomy and postoperative asymmetric deformities, are detected early by the 3D-CT imaging technique, and, 3) 3D-CT mid-sagittal and top axial views of the intracranial skull base are most useful in postoperative assessments of the surgical results. Basesd on our experience, we expect that three dimensional surface reconstructions from CT scans will become to be used widely in the postoperative assessments of the surgical results of craniofacial anomalies.

  2. Authority Control for INVENIO

    CERN Document Server

    Dickinson, Christopher Michael; Omar, Abou Khaled; Felber, Pascal

    This is the final report for a Bachelor project at the École d'Ingénieurs et d'Architectes (EIA-FR), in collaboration with the European Organization for Nuclear Research (CERN) near Geneva. The official starting date for this project was June 30th 2011. All of the work described in this document was done at CERN during an internship in the IT-UDS-CDS team. The goal of the project was to add authority contro1 to INVENIO. Authority control provides a library management software with two main functions. 1. It allows the disambiguation between similar or identical terms, such as author names referring to different people. 2. It allows for the collocation of seemingly distinct information that logically belongs together, e.g. alternate names for an author or institution. In recent years, INVENIO users have seen the need to control standardized ways of managing the names of authors and institutions, journals and subjects. “Authority records” keep track of the standard way (e.g. “Curie, Marie”) as well as...

  3. The relationship of histrionic personality disorder to antisocial personality and somatization disorders.

    Science.gov (United States)

    Lilienfeld, S O; Van Valkenburg, C; Larntz, K; Akiskal, H S

    1986-06-01

    The authors examined the association of antisocial personality disorder, somatization disorder, and histrionic personality disorder, both within individuals and within families, in 250 patients. All three disorders overlapped considerably within individuals; the strongest relationship was between antisocial personality and histrionic personality. A high prevalence of antisocial personality was reported in the families of patients with somatization disorder but not in the families of patients with histrionic personality. The authors suggest that histrionic individuals develop antisocial personality if they are male and somatization disorder if female; moreover, all three conditions may represent alternative manifestations or different stages of the same underlying diathesis.

  4. Personality and personal network type

    NARCIS (Netherlands)

    Doeven-Eggens, Lilian; De Fruyt, Filip; Hendriks, A. A. Jolijn; Bosker, Roel J.; Van der Werf, Margaretha P. C.

    2008-01-01

    The association between personality and personal relationships is mostly studied within dyadic relationships. We examined these variables within the context of personal network types. We used Latent Class Analysis to identify groups Of Students with similar role relationships with three focal figure

  5. Personality and personal network type

    NARCIS (Netherlands)

    Doeven-Eggens, Lilian; De Fruyt, Filip; Hendriks, A. A. Jolijn; Bosker, Roel J.; Van der Werf, Margaretha P. C.

    2008-01-01

    The association between personality and personal relationships is mostly studied within dyadic relationships. We examined these variables within the context of personal network types. We used Latent Class Analysis to identify groups Of Students with similar role relationships with three focal

  6. Intraperitoneal desmoid tumor: achievements in CT. Tumor demoide intraperitoneal: hallazgos en TC

    Energy Technology Data Exchange (ETDEWEB)

    Soto Aguilar, M.C.; Navarro Sanchis, E.; Sanchez-Lafuente Rubio, J.; Vicente Romo, J.; Fuentes Limpiaez, J.J. (Hospital Regional Carlos Haya. Servicio de Radiodiagnostico. Malaga (Spain))

    1993-01-01

    We present two cases of intraperitoneal desmoid tumor studied by means of CT. Both presented in the form of solid masses with involvement of small bowel loops in asympthmatic patients. CT is useful for locating the mass and studying possible tumor recurrences, but there is no semiological data to differentiate them from other intraperitoneal solid neoplasms. (Author)

  7. CT findings in symptomatic Rathke's cleft cysts of the pituitary gland

    Energy Technology Data Exchange (ETDEWEB)

    Dietemann, J.L.; Wackenheim, A.; Bonneville, J.F.; Cattin, F.; Buchheit, F.; Heldt, N.

    1983-03-01

    Symptomatic intrasellar Rathke's cleft cysts are rather rare: only a few cases with CT findings have been reported. The authors describe the CT appearance of 3. Histological aspects and embryology are discussed. Rathke's cleft cysts have to be differentiated from other intersellar tumors: cystic craniopharyngiomas, cystic or necrotic pituitary adenomas, cysticercosis.

  8. The Characteristics of Collaboration Based on Co-author Network of 100 Person Project of the ChineseAcademy of Sciences%基于合著网络的“百人计划”入选者学术合作特征分析

    Institute of Scientific and Technical Information of China (English)

    白晨; 彭洁

    2013-01-01

    This paper analyses the col aborative characteristics of 100 person project of the Chinese Academy of Sciences in the fields of environment, energy and material. Based on the published SCI papers of the researchers who were selected in 100 person project of the Chinese Academy of Sciences, included in the database of high-level Chinese academic talents, this paper discusses the characteristics of col aborative scale, col aborative frequency and co-author network. And then policy recommendations are made to cultivate academic leaders.%  文章分析了“百人计划”中环境、能源和材料领域入选者的合作特征,以“中国高层次科技人才信息数据库”中收录的“百人计划”入选者发表的SCI论文为样本,分析了入选者合作发表论文量、合作规模、合作频次和合著网络特征,最后为中国高层次学术带头人的培养提出了建议。

  9. Computed Tomography (CT) -- Head

    Medline Plus

    Full Text Available ... you! Do you have a personal story about radiology? Share your patient story here Images × Image Gallery ... Pregnancy Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to ...

  10. Computed Tomography (CT) -- Sinuses

    Medline Plus

    Full Text Available ... you! Do you have a personal story about radiology? Share your patient story here Images × Image Gallery ... Materials Head and Neck Cancer X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety Images related to ...

  11. Abdominal and Pelvic CT

    Medline Plus

    Full Text Available ... you! Do you have a personal story about radiology? Share your patient story here Images × Image Gallery ... Related Articles and Media Ultrasound - Abdomen X-ray (Radiography) - Lower GI Tract X-ray (Radiography) - Upper GI ...

  12. Low-dose techniques in CT-guided interventions.

    Science.gov (United States)

    Sarti, Marc; Brehmer, William P; Gay, Spencer B

    2012-01-01

    Computed tomography (CT)-guided interventions such as biopsy, drainage, and ablation may be significant sources of radiation exposure in both patients and radiologists. Simple CT techniques to reduce radiation dose may be employed without increasing the procedure time or significantly degrading image quality. To develop low-dose protocols, it is important to understand the key concepts of delivered radiation dose to patients and physicians during CT-guided interventions. Patient dose estimates are easily followed and are provided at CT workstations. Familiarity with dose estimates, which are expressed as CT dose index and dose-length product, is also important. Methods to reduce radiation exposure in patients and physicians include performing proper preprocedure planning and paying careful attention to technique during the planning stage, making use of personal protective equipment, performing CT fluoroscopy intermittently instead of in real time, and optimizing needle visualization. Representative examples of these techniques have resulted in dose reductions of as much as 89%. Alternative imaging technologies that do not use ionizing radiation, such as virtual and ultrasonographic guidance, may also be used to reduce radiation dose. Understanding dose contribution strategies to reduce radiation dose provides a safer, more efficient environment for patients and the radiology team.

  13. Reflections on Parental Authority

    Directory of Open Access Journals (Sweden)

    Gabriela LUPŞAN

    2016-03-01

    Full Text Available The movement in the European Union territory of the family members de jure or de facto - parents married or not, on the one hand, and their children, on the other hand, the birth of litigation related to the content, exercising or limiting the parental authority in the event at least one holder of parental authority is in a Member State other than where the minor child is, and the interest of achieving a good administration of justice within the European Union, led to the development of Community instruments in the area of parental authority, which has provisions on conflicts of jurisdiction, conflict of laws, recognition and enforceability, enforcement, legal aid and cooperation between central authorities, designating the applicable law. In the first part of the study we have analyzed the rules of jurisdiction by establishing the jurisdiction of the court hearing with an application for parental responsibility, whether there are pending divorce proceeding or not. In the second part of the study, we have limited the analysis to the rules applicable to the law causes that have as object parental authority.

  14. Personality traits and personality disorders.

    Science.gov (United States)

    Deary, I J; Peter, A; Austin, E; Gibson, G

    1998-11-01

    The structure of personality disorder traits was examined in a sample of 400 undergraduates who completed the personality disorder questionnaire from the Structured Clinical Interview for DSM-III-R (SCID-II). The relations between personality disorder and normal personality traits indexed by the Eysenck Personality Questionnaire-Revised (EPQ-R) were examined. The three-cluster model of personality traits--as described in the DSM scheme--found equivocal support. Exploratory principal components analysis and confirmatory factor analysis found four broad factors of personality disorder that overlapped with normal personality traits: an asthenic factor related to neuroticism; an antisocial factor associated with psychoticism; an asocial factor linked to introversion-extraversion; and an anankastic (obsessive-compulsive) factor. There is growing agreement about the number and type of broad personality disorder dimensions; similar dimensions may be found in clinical and non-clinical samples, suggesting that those people with personality disorders differ quantitatively rather than qualitatively from others; and there is substantial overlap between normal and abnormal personality dimensions.

  15. Sci—Thur PM: Imaging — 06: Canada's National Computed Tomography (CT) Survey

    Energy Technology Data Exchange (ETDEWEB)

    Wardlaw, GM; Martel, N [Medical Imaging Division, Consumer and Clinical Radiation Protection Bureau, Healthy Environments and Consumer Safety Branch, Health Canada (Canada); Blackler, W; Asselin, J-F [Data Analysis and Information Systems, Applied Research and Analysis Directorate, Strategic Policy Branch, Health Canada (Canada)

    2014-08-15

    The value of computed tomography (CT) in medical imaging is reflected in its' increased use and availability since the early 1990's; however, given CT's relatively larger exposures (vs. planar x-ray) greater care must be taken to ensure that CT procedures are optimised in terms of providing the smallest dose possible while maintaining sufficient diagnostic image quality. The development of CT Diagnostic Reference Levels (DRLs) supports this process. DRLs have been suggested/supported by international/national bodies since the early 1990's and widely adopted elsewhere, but not on a national basis in Canada. Essentially, CT DRLs provide guidance on what is considered good practice for common CT exams, but require a representative sample of CT examination data to make any recommendations. Canada's National CT Survey project, in collaboration with provincial/territorial authorities, has collected a large national sample of CT practice data for 7 common examinations (with associated clinical indications) of both adult and pediatric patients. Following completion of data entry into a common database, a survey summary report and recommendations will be made on CT DRLs from this data. It is hoped that these can then be used by local regions to promote CT practice optimisation and support any dose reduction initiatives.

  16. Suicide and Personality

    Directory of Open Access Journals (Sweden)

    K. Nahit Ozmenler

    2009-07-01

    Full Text Available Many factors may play role in the emergence of suicidal behavior. Familial tendency including some features of personality structure, hopelessness, affective disorder, and suicide behavior have attracted close attention recently. Personality disorders seem to be prevalent in individuals who attempt suicide. Beside it has been reported that personality disorders and other psychiatric disorder comorbidity increase the risk of suicide. To present the relationship between suicide and personality is quite important for developing strategies in order to prevent suicide attempt. In this field, the data show variability based on scales used for the evaluation of personality, its definition and classification in the research. For example, while some authors used DSM criteria or ICD criteria, others preferred to focus on the temperament and character dimensions of personality. In studies based on diagnostic criteria; B group personality disorders, such as antisocial and borderline personality disorders were found to be most common comorbid personality disorder diagnosis. In studies aiming to investigate the relationship among suicide attempt, temperament and character features, the suicide attempters were found to have lower levels of self directedness, cooperativeness, and higher scores for self transcendence. Suicidal patients were inclined to have higher scores in several temperament groups like harm avoidance, novelty seeking, and reward dependence. Tendency to impulsive behavior is reported as a common denominator for suicidal patients. Individuals, who have familial or acquired tendency of impulsivity, could react more dramatically and present with depressive and pessimistic mood when they have difficulties and encounter stress factors in their daily routine and could easily develop depressive disorders. These factors as a whole could lead to self destructive actions like suicide. Individual or familial history of suicide attempts or completed

  17. Information for Authors

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    General Asian Journal of Andrology ( AJA ), the official journal of the Asian Society of Andrology. invites reports of original research on all areas of andrology, both experimental and clinical, including modem, traditional, and epidemiological, from any part of the world. Short communications (including clinical practice or case report) and letters to the editor are also welcome. Review articles based primarily on authors' own research of internationally important topics are accepted. Authors are requested to submit a covering letter indicating that their manuscript represents original unpublished material that has not been and will not be published elsewhere. This restriction does not apply to results published as abstracts of communications, letters to the editor or as preliminary reports. By submitting a manuscript the authors warrant that all necessary permissions have been obtained.

  18. Information for Authors

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    General Asian Journal of Andrology ( AJA ), the official journal of the Asian Society of Andrology, invites reports of original research on all areas of andrology, both experimental and clinical, including modem, traditional, and epidemiological, from any part of the world. Short communications (including clinical practice or case report) and letters to the editor are also welcome. Review articles based primarily on authors' own research of internationally important topics are accepted. Authors are requested to submit a covering letter indicating that their manuscript represents original unpublished material that has not been and will not be published elsewhere. This restriction does not apply to results published as abstracts of communications, letters to the editor or as preliminary reports. By submitting a manuscript the authors warrant that all necessary permissions have been obtained.

  19. Size selective isocyanate aerosols personal air sampling using porous plastic foams

    Energy Technology Data Exchange (ETDEWEB)

    Cong Khanh Huynh; Trinh Vu Duc, E-mail: chuynh@hospvd.c [Institut Universitaire Romand de Sante au Travail (IST), 21 rue du Bugnon - CH-1011 Lausanne (Switzerland)

    2009-02-01

    As part of a European project (SMT4-CT96-2137), various European institutions specialized in occupational hygiene (BGIA, HSL, IOM, INRS, IST, Ambiente e Lavoro) have established a program of scientific collaboration to develop one or more prototypes of European personal samplers for the collection of simultaneous three dust fractions: inhalable, thoracic and respirable. These samplers based on existing sampling heads (IOM, GSP and cassettes) use Polyurethane Plastic Foam (PUF) according to their porosity to support sampling and separator size of the particles. In this study, the authors present an original application of size selective personal air sampling using chemical impregnated PUF to perform isocyanate aerosols capturing and derivatizing in industrial spray-painting shops.

  20. Personality Development

    Directory of Open Access Journals (Sweden)

    Osman Ozdemir

    2012-12-01

    Full Text Available Personality is the integration of characteristics acquired or brought by birth which separate the individual from others. Personality involves aspects of the individual's mental, emotional, social, and physical features in continuum. Several theories were suggested to explain developmental processes of personality. Each theory concentrates on one feature of human development as the focal point, then integrates with other areas of development in general. Most theories assume that childhood, especially up to 5-6 years, has essential influence on development of personality. The interaction between genetic and environmental factors reveals a unique personality along growth and developmental process. It could be said that individual who does not have any conflict between his/her basic needs and society's, has well-developed and psychologically healthy personality.