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Sample records for echocardiography doppler color

  1. Color M-mode and pulsed wave tissue Doppler echocardiography

    DEFF Research Database (Denmark)

    Møller, J E; Søndergaard, E; Poulsen, S H;

    2001-01-01

    To assess the association between color M-mode flow propagation velocity and the early diastolic mitral annular velocity (E(m)) obtained with tissue Doppler echocardiography and to assess the prognostic implications of the indexes, echocardiography was performed on days 1 and 5, and 1 and 3 months...

  2. Diagnosis of asymptomatic atrial septal aneurysms using two-dimensional color Doppler and contrast transthoracic echocardiography

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Objective To evaluate the dimensions of atrial septal aneurysm (ASA), the presence and characteristics of interatrial shunt, the movement of the wall of the aneurysm, and correlation between these findings and sign and/or symptoms suggesting embolism in Manisa, a district of a western Anatolian city of Turkey. Methods Two thousand five hundred cases were examined by routine transthoracic echocardiography (TTE) in both pediatric and adult cardiology outpatient clinics. ASA was detected in 20 cases and evaluated by two-dimensional color Doppler echocardiography (CDE). The length of the base, the maximum radius and the maximum displacement of ASA were measured. The shunt between the atria was examined by CDE. In cases where a shunt could not be found, galactose and palmitic acid was injected. Standard 12-lead electrocardiogram (ECG) and exercise stress test were also performed. Results No clinical signs or symptoms were found, suggesting a systemic or cerebral embolism. The maximum displacement of ASA was between 2 and 5 mm. All of the aneurysms were localized in the right atrium, and the walls of the aneurysm did not move beyond the base of the left atrium during the maximum displacement. Interatrial shunt was detected in 14 of 20 patients (70%) by CDE and in the remaining six cases by contrast TTE. Frequent ventricular ectopic beats were observed in one patient. Conclusions During routine TTE we observed 0.8% asymptomatic ASA in our population. The use of a contrast agent was found to be a valuable additional method in patients with ASA when the shunt could not be detected by CDE. The risk for embolism is not high when the maximum displacement of the wall of ASA was 5 mm or less and no bulge into the left atrium was observed. Based on our experience with this method, TTE is easy to perform, well-tolerated and acceptable.

  3. Ratio of left ventricular peak E-wave velocity to flow propagation velocity assessed by color M-mode Doppler echocardiography in first myocardial infarction

    DEFF Research Database (Denmark)

    Møller, J E; Søndergaard, E; Seward, J B;

    2000-01-01

    OBJECTIVES: To determine the ability of the ratio of peak E-wave velocity to flow propagation velocity (E/Vp) measured with color M-mode Doppler echocardiography to predict in-hospital heart failure and cardiac mortality in an unselected consecutive population with first myocardial infarction (MI......). BACKGROUND: Several experimental studies indicate color M-mode echocardiography to be a valuable tool in the evaluation of diastolic function, but data regarding the clinical value are lacking. METHODS: Echocardiography was performed within 24 h of arrival at the coronary care unit in 110 consecutive...... or =1.5 measured with color M-mode echocardiography is a strong predictor of in-hospital heart failure. Furthermore, E/Vp is superior to systolic measurements in predicting 35 day survival although Dt

  4. Indicaciones básicas para la realización de ecocardiografía-Doppler-color Basic indications for the performance of color Doppler echocardiography

    Directory of Open Access Journals (Sweden)

    Fernando Manzur

    2005-06-01

    physiopathology give sufficient bases for the clinical decision assessment and emphasizes the evidence’s examination for the clinical investigation. The comprehension of certain evidence rules is necessary for the correct interpretation of literature in respect to the causes, diagnostic tools and treatment strategies. The main aim of this research is to make a protocol for the indications of an echocardiogram in the clinical practice and to educate our country’s general physicians in this conduct. The good practice is due to initiatives, activities and functional models that are in progress worldwide, as confirmed by evidence. Objective: echocardiography is actually the gold standard for the study of heart anatomy and physiology. Since its introduction in the clinical practice more than three decades ago, it has had such diffusion that it is considered an important tool in the cardiology assistance. It provides trustworthy functional anatomic information, as well as diagnosis and is decisive in the treatment and resolution of cardiovascular diseases. The progressive development of this technique has enabled its use in all the different fields that may affect the cardiovascular system. The objective is to help the clinical physicians in the making of decisions in concrete situations, guaranteeing them that the diagnosis is based on results given by valid scientific studies. In accordance to this, different studies as well as task force and management guides representative of the worldwide literature, were compiled.

  5. 弯刀综合征的超声心动图诊断价值探讨%Value of color Doppler echocardiography in diagnosis of scimitar syndrome

    Institute of Scientific and Technical Information of China (English)

    曹睿; 刘特长; 于明华; 张明杰; 陈欣欣; 虢艳; 李健茹; 王莉

    2015-01-01

    目的:探讨弯刀综合征的经胸彩色多普勒超声心动图诊断价值。方法回顾6例弯刀综合征患儿的超声图像,结合文献分析超声心动图特征及其血流动力学。结果6例弯刀综合征患儿右位心或中位心各3例,右心扩大6例,全部或部分右肺静脉异位引流至下腔静脉各3例,6例右肺动脉发育不良,均与CT血管造影(CT angiography ,CTA)相符,其中4例经手术证实。结论弯刀综合征的超声图像特征明显,可为其早期诊断与治疗提供有价值的信息。%Objective To discuss the value of color Doppler echocardiography in diagnosis of scimitar syndrome .Methods The echocardiographic results of 6 patients with a diagnosis of scimitar syndrome were reviewed retrospectively .Their sonographic and hemodynamic characteristics were also analyzed connected with the reports in the literature .Results Three cases had dextrocardia and the others had mesocardia .All cases got right ventricular dimension enlargement .Total or partial of right pulmonary venous connection to the inferior vena cava were 3 cases respectively .All cases had right pulmonary artery hypoplasia .All of 6 cases echocardiographic results were in accordance with the findings by CT angiography and 4 cases were confirmed by operation .Conclusions The sonographic features of scimitar syndrome were obvious ,and echocardiography was contribute to early diagnosis of scimitar syndrome .

  6. Value of systolic pulmonary venous flow reversal and color Doppler jet measurements assessed with transesophageal echocardiography in recognizing severe pure mitral regurgitation

    NARCIS (Netherlands)

    Pieper, EPG; Hellemans, IM; Hamer, HPM; Ravelli, ACJ; Cheriex, EC; Tijssen, JGP; Lie, KI; Visser, CA

    1996-01-01

    We evaluated the value of color and pulsed Doppler transesophageal echocardiographic parameters and of V waves in estimating the severity of mitral regurgitation (MR) in 62 consecutive patients (38 men and 24 women, aged 39 to 80 years) with angiographically proven chronic pure MR (15 grade I/II, 47

  7. Diagnose value of bedside color doppler echocardiography to children in neonatal intensive care unit%床旁彩色多普勒超声心动图对NICU患儿的诊断价值

    Institute of Scientific and Technical Information of China (English)

    冯俊; 常凤玲

    2011-01-01

    目的:探讨床旁彩色多普勒超声心动图在新生儿重症监护室(NICU)中的应用价值.方法:选取2008年1月~2010年5月使用美国GE-vivid-i便携式床旁彩超诊断仪对NICU新生儿中临床疑似先天性心脏病(CHD)的341例患儿进行心脏彩超检查,采用胸骨旁、剑突下、心尖及胸骨上窝等多切面反复探查,CHD按心脏三级顺序分段法检查并作出诊断.结果:床旁超声心动图检出CHD患儿256例,其中非紫绀型先天性心脏病96例,紫绀型先天性心脏病82例,卵圆孔未闭31例,动脉导管未闭26例,二者并存12 例,瓣膜反流2例,假腱索7例.NICU多为早产儿及新生儿,较为常见的心内分流为卵圆孔未闭,其与动脉导管未闭在未来均有闭合的可能,不诊断为先天性心脏病.结论:床旁彩色多普勒超声心动图可为患儿提供可靠的诊断信息,为进一步检查和治疗提供可靠依据.%Objective: To investigate the application value of bedside color doppler echocardiography in neonatal intensive care unit (NICLJ). Methods: 341 neonates in NICLJ suspected with congenital heart disease (CHD) were received color echocardiography examination with the American GE-vivid-I portable bedside color echocardiography from August 2008 to May 2010 by repeated search from multiple sections such as parasternum, infraxiphoid, apex cordis and suprasternal fossa. The CHD was examined and diagnosed by the heart tertiary sequence sectioning method. Results: 256 children were diagnosed with CHD by bedside color doppler echocardiography detection, 96 children were non-cyanotic and 82 children were cyaotic. 31 children were patent foramen ovale, 26 patent ductus arteriosus, 12 both, 2 valvular regurgitation and 7 false chordae tendineae. Children in the NICLJ were mostly premature infants and neonates, for who the more common intracardiac shunt was patent foramen ovale. Patent foramen ovale and patent ductus arteriosus were likely to close in the future

  8. Heart wall motion analysis by dynamic 3D strain rate imaging from tissue Doppler echocardiography

    Science.gov (United States)

    Hastenteufel, Mark; Wolf, Ivo; de Simone, Raffaele; Mottl-Link, Sibylle; Meinzer, Hans-Peter

    2002-04-01

    The knowledge about the complex three-dimensional (3D) heart wall motion pattern, particular in the left ventricle, provides valuable information about potential malfunctions, e.g., myocardial ischemia. Nowadays, echocardiography (cardiac ultrasound) is the predominant technique for evaluation of cardiac function. Beside morphology, tissue velocities can be obtained by Doppler techniques (tissue Doppler imaging, TDI). Strain rate imaging (SRI) is a new technique to diagnose heart vitality. It provides information about the contraction ability of the myocardium. Two-dimensional color Doppler echocardiography is still the most important clinical method for estimation of morphology and function. Two-dimensional methods leads to a lack of information due to the three-dimensional overall nature of the heart movement. Due to this complex three-dimensional motion pattern of the heart, the knowledge about velocity and strain rate distribution over the whole ventricle can provide more valuable diagnostic information about motion disorders. For the assessment of intracardiac blood flow three-dimensional color Doppler has already shown its clinical utility. We have developed methods to produce strain rate images by means of 3D tissue Doppler echocardiography. The tissue Doppler and strain rate images can be visualized and quantified by different methods. The methods are integrated into an interactively usable software environment, making them available in clinical everyday life. Our software provides the physician with a valuable tool for diagnosis of heart wall motion.

  9. Doppler echocardiography in normal functioning valve prostheses.

    Science.gov (United States)

    Cha, R; Yang, S S; Salvucci, T; DiBlasi, S

    1994-09-01

    Even though there has been some criticism regarding the Doppler evaluation in prosthetic valves because of inter-observer and intra-observer variability, among other factors, and Doppler study has a tendency to have falsely high gradients compared to invasive studies, especially mechanical aortic prostheses, Doppler evaluation can provide reliable hemodynamic information about valve function. This test may be particularly useful if used serially, when baseline values are known. Doppler measurement of gradient and valve area has an expected normal range that is specific for the prosthetic type, size, anatomical position, and chronological age. Clearly, a database involving these aspects is needed to provide a more accurate normal range. This study is intended to provide guidance for echocardiographers.

  10. Assessment of right ventricular systolic function by tissue Doppler echocardiography

    DEFF Research Database (Denmark)

    Kjærgaard, Jesper

    2012-01-01

    myocardial velocities, but no changes in SR, strain or isovolumic acceleration could be observed [II and III]. Tissue Doppler echocardiography of the RV free wall in non-massive pulmonary embolism quantifies degree of RV dysfunction, and supports the existence of the McConnell sign of mid-ventricular RV...... structure including significant dilatation, but is well tolerated with only mild reduction in measures of global RV systolic function as estimated by 2D echocardiography in an experimental animal model. Regional RV myocardial function is also only mildly reduced. Also no differences in global or regional RV......This thesis summarizes a series of studies performed in order to assess the clinical usefulness of a novel echocardiographic technology that allows non-invasive assessment of regional right ventricular myocardial velocities and deformation: tissue Doppler echocardiography. While the technology...

  11. 成人心室双人口彩色多普勒超声心动图特征研究%Image characteristics of color Doppler echocardiography in adults with double-inlet ventricle

    Institute of Scientific and Technical Information of China (English)

    侯传举; 邹苏娅; 邓东安; 朱鲜阳; 韩秀敏; 刘剑立; 胡斌; 王巧玲

    2011-01-01

    Objectives To explore the image characteristics of color Doppler echocardiography (CDE) in adults with double-inlet ventricle (DIV). Methods Thirty-two adult patients with DIV were examined by CDE, and angiocardiography results were taken for contrast. Among them, 25 cases were confirmed by operation. Results Thirty adult cases were accurately diagnosed as DIV by CDE, and the accuracy rate reached 93.8% (30/32). Two cases were misdiagnosed as double-outlet right ventricle. The CDE characteristics in adults with DIV were as below; (1)Apical fourchamber views of two-dimensional echocardiography (2DE) showed intact atrial septum and total echo loss of ventricular septum. During systole, two atrioventricular valves closed, the"+"sign was replaced by"T" sign of 2DE; and during diastole, two atrioventricular valves opened to the one common ventricle. Color Doppler flow imaging (CDFI) showed that flow signals from the two atrium entered one common ventricle through two atrioventricular valves.(2)According to the features of the common ventricle on apical four-chamber view of 2DE, the ventricle of DIV could be devided into 3 types, as type A(65.6%, 21/32) with delicate echo in endocardium and trabecular muscles, type B(6.3%,2/32) with coarse echo, and type C (28.1%, 9/32), bulboventricular ridge could be seen in the apex of the common ventricle. (3)Type of the great arteries could be judged by view of parastemal short axis. Type I showed normal relationship of the two great arteries (15.6%, 5/32). Type Ⅱ and Ⅲ showed the same two circular echo signals of the two great arteries, but with different spatial relationships of the two circles, type Ⅱ (21.9%, 7/32) showed the two circles located in anterior right-posterior left direction and type Ⅲ (62.5%, 20/32) showed the two circles in anterior left-posterior right direction. The size of the two circles could be used to distinguish between pulmonary stenosis and pulmonary hypertension. Pulmonary stenosis(96.9%, 31

  12. Color doppler sonography in thickened gallbladder wall

    Energy Technology Data Exchange (ETDEWEB)

    Han, Sang Suk; Choi, Seok Jin; Seo, Chang Hae; Eun, Choong Ki [Inje Univ. College of Medicine, Kimhae (Korea, Republic of)

    1996-11-01

    The thickening of the gallbladder wall is a valuable finding for the diagnosis of cholecystitis, but may be seen in non-cholecystic disease as well as in acute or chronic cholecystitis. The purpose of this study is to determine the value of color Doppler sonography in differentiating the causes of thickened gallbladder wall. Ninety eight patients with thickened gallbladder wall(more than 3mm) which was not due to gallbladder cancer were prospectively evaluated with color Doppler sonography. Sixty-six cases, confirmed by pathologic reports and clinical records, were analyzed for correlation between thickened gallbladder wall and color flow signal according to the underlying causes. Of the 66 patients, 28 cases were cholecystitis and 38 cases had non-cholecystic causes such as liver cirrhosis, ascites, hepatitis, pancreatitis, renal failure, and hypoalbuminemia. Of the 28 patients with cholecystitis(12 acute, 16 chronic), 23(82%) had color Doppler flow signals in the thickened gallbladder wall. Of the 38 patients with non-cholecystic causes, eight(21%) had color Doppler flow signals. There was a statistically significant difference of color Doppler flow signals between the cholecystitis and non-cholecystic groups(p=0.0001). No significant difference of color Doppler flow signals was found between cases of acute and chronic cholecystitis. Of the 23 patients with color Doppler flow signals in 28 cases of cholecystitis, 18(78.3%) showed a linear pattern and five(21.7%) showed a spotty pattern. Of the eight patients with color Doppler flow signals in the 38 non-cholecystic cases, four(50%) showed a linear pattern and four(50%) showed a spotty pattern. In cholecystitis, a linear color Doppler flow signal pattern is a much more frequent finding than a spotty pattern. Color Doppler sonography is a useful and adequate method for determining whether a thickened gallbladder wall is the result of cholecystitis or has non-cholecystic causes.

  13. Transesophageal color Doppler evaluation of obstructive lesions using the new "Quasar" technology.

    Science.gov (United States)

    Fan, P; Nanda, N C; Gatewood, R P; Cape, E G; Yoganathan, A P

    1995-01-01

    Due to the unavoidable problem of aliasing, color flow signals from high blood flow velocities cannot be measured directly by conventional color Doppler. A new technology termed Quantitative Un-Aliased Speed Algorithm Recognition (Quasar) has been developed to overcome this limitation. Employing this technology, we used transesophageal color Doppler echocardiography to investigate whether the velocities detected by the Quasar would correlate with those obtained by continuous-wave Doppler both in vitro and in vivo. In the in vitro study, a 5.0 MHz transesophageal transducer of a Kontron Sigma 44 color Doppler flow system was used. Fourteen different peak velocities calculated and recorded by color Doppler-guided continuous-wave Doppler were randomly selected. In the clinical study, intraoperative transesophageal echocardiography was performed using the same transducer 18 adults (13 aortic valve stenosis, 2 aortic and 2 mitral stenosis, 2 hypertrophic obstructive cardiomyopathy and 1 mitral valve stenosis). Following each continuous-wave Doppler measurement, the Quasar was activated, and a small Quasar marker was placed in the brightest area of the color flow jet to obtain the maximum mean velocity readout. The maximum mean velocities measured by Quasar closely correlated with maximum peak velocities obtained by color flow guided continuous-wave Doppler in both in vitro (0.53 to 1.65 m/s, r = 0.99) and in vivo studies (1.50 to 6.01 m/s, r = 0.97). We conclude that the new Quasar technology can accurately measure high blood flow velocities during transesophageal color Doppler echocardiography. This technique has the potential of obviating the need for continuous-wave Doppler.

  14. A Study on Imaging Characteristics of Color Doppler Echocardiography on Adult Dextrocardia with Cardiovascular Malformations%成人右旋心及合并畸形彩色多普勒超声心动图特征

    Institute of Scientific and Technical Information of China (English)

    侯传举; 李燕萍; 邓东安; 朱鲜阳; 韩秀敏; 刘剑立; 胡斌; 王巧玲

    2011-01-01

    Purpose To explore the imaging characteristics of color Doppler echocardiography(CDE) on adult dextrocardia with cardiovascular malformations.Materials and Methods Thirty patients with dextrocardia with cardiovascular malformations were detected by CDE and the imaging characteristics of CDE were investigated.All cases underwent angiocardiography examination as control.26 cases were proved by surgery.Results All cases were diagnosed correctly, according to CDE imaging features.The imaging features of CDE of adult dextrocardia with cardiovascular malformation are very obvious: ①Adult dextrocardia usually includes 4 kinds of congenital heart disease,among which type SLL corrective transposition of the great arteies are common (80%) ,type AⅢ double-inlet ventricle ( 10.0%) ,type SLL double outlet of right ventricle (6.7%) and isolated atrial septal defect (3.3%) is rare.②No matter which kind of congenital heart disease adult dextrocardia combined, CDE results all showed orthotopic heart.③Adult dextrocardia which combined corrective transposition of the great arteies,double-inlet ventricle and double outlet of right ventricle is left-transposition.④Among adult dextrocardia combined with complex congenital heart disease,many of them emerged pulmonary stenosis (93.3%) ,in which color Doppler flow imaging showed multicoloured enchase jet bouquet of blood flow signals through pulmonary artery.⑤In cases of atral septal defect and ventricular septal defect, color Doppler flow imaging showed left to right or bidirection multicoloured enchase shunt bouquet of blood flow signals across interatrial septum or interventricular septum.Conclusion The characteristics of CDE on adult dextrocardia and cardiovascular deformity are obvious.CDE can be used to diagnose this correctly, when the operators of CDE has an excellent demand of the anatomy of this disease.The exploration technique of the disease is obviously different from those of normal position heart

  15. Staggered Multiple-PRF Ultrafast Color Doppler.

    Science.gov (United States)

    Posada, Daniel; Poree, Jonathan; Pellissier, Arnaud; Chayer, Boris; Tournoux, Francois; Cloutier, Guy; Garcia, Damien

    2016-06-01

    Color Doppler imaging is an established pulsed ultrasound technique to visualize blood flow non-invasively. High-frame-rate (ultrafast) color Doppler, by emissions of plane or circular wavefronts, allows severalfold increase in frame rates. Conventional and ultrafast color Doppler are both limited by the range-velocity dilemma, which may result in velocity folding (aliasing) for large depths and/or large velocities. We investigated multiple pulse-repetition-frequency (PRF) emissions arranged in a series of staggered intervals to remove aliasing in ultrafast color Doppler. Staggered PRF is an emission process where time delays between successive pulse transmissions change in an alternating way. We tested staggered dual- and triple-PRF ultrafast color Doppler, 1) in vitro in a spinning disc and a free jet flow, and 2) in vivo in a human left ventricle. The in vitro results showed that the Nyquist velocity could be extended to up to 6 times the conventional limit. We found coefficients of determination r(2) ≥ 0.98 between the de-aliased and ground-truth velocities. Consistent de-aliased Doppler images were also obtained in the human left heart. Our results demonstrate that staggered multiple-PRF ultrafast color Doppler is efficient for high-velocity high-frame-rate blood flow imaging. This is particularly relevant for new developments in ultrasound imaging relying on accurate velocity measurements.

  16. with Ultrasound Color Doppler Imaging

    Directory of Open Access Journals (Sweden)

    Shin Takayama

    2012-01-01

    Full Text Available Color Doppler imaging (CDI can be used to noninvasively create images of human blood vessels and quantitatively evaluate blood flow in real-time. The purpose of this study was to assess the effects of acupuncture on the blood flow of the peripheral, mesenteric, and retrobulbar arteries by CDI. Statistical significance was defined as P values less than 0.05. Blood flow in the radial and brachial arteries was significantly lower during needle stimulation on LR3 than before in healthy volunteers, but was significantly higher after needle stimulation than before. LR3 stimulation also resulted in a significant decrease in the vascular resistance of the short posterior ciliary artery and no significant change of blood flow through the superior mesenteric artery (SMA during acupuncture. In contrast, ST36 stimulation resulted in a significant increase in blood flow through the SMA and no significant change in the vascular resistance of the retrobulbar arteries. Additionally, acupuncture at previously determined acupoints in patients with open-angle glaucoma led to a significant reduction in the vascular resistance of the central retinal artery and short posterior ciliary artery. Our results suggest that acupuncture can affect blood flow of the peripheral, mesenteric, and retrobulbar arteries, and CDI can be useful to evaluate hemodynamic changes by acupuncture.

  17. Cancer therapy and cardiotoxicity: The need of serial Doppler echocardiography

    Directory of Open Access Journals (Sweden)

    Pardo Moira

    2007-01-01

    Full Text Available Abstract Cancer therapy has shown terrific progress leading to important reduction of morbidity and mortality of several kinds of cancer. The therapeutic management of oncologic patients includes combinations of drugs, radiation therapy and surgery. Many of these therapies produce adverse cardiovascular complications which may negatively affect both the quality of life and the prognosis. For several years the most common noninvasive method of monitoring cardiotoxicity has been represented by radionuclide ventriculography while other tests as effort EKG and stress myocardial perfusion imaging may detect ischemic complications, and 24-hour Holter monitoring unmask suspected arrhythmias. Also biomarkers such as troponine I and T and B-type natriuretic peptide may be useful for early detection of cardiotoxicity. Today, the widely used non-invasive method of monitoring cardiotoxicity of cancer therapy is, however, represented by Doppler-echocardiography which allows to identify the main forms of cardiac complications of cancer therapy: left ventricular (systolic and diastolic dysfunction, valve heart disease, pericarditis and pericardial effusion, carotid artery lesions. Advanced ultrasound tools, as Integrated Backscatter and Tissue Doppler, but also simple ultrasound detection of "lung comet" on the anterior and lateral chest can be helpful for early, subclinical diagnosis of cardiac involvement. Serial Doppler echocardiographic evaluation has to be encouraged in the oncologic patients, before, during and even late after therapy completion. This is crucial when using anthracyclines, which have early but, most importantly, late, cumulative cardiac toxicity. The echocardiographic monitoring appears even indispensable after radiation therapy, whose detrimental effects may appear several years after the end of irradiation.

  18. Evaluation of the Severity of Mitral Valvular Regurgitation with Doppler Echocardiography Using Proximal Flow Convergence Method

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    Pinjari A. Khayum

    2009-01-01

    Full Text Available Problem statement: Valvular regurgitation is recognized as the central cause of morbidity and mortality. Even though the clinician can detect the presence of regurgitation by mere physical examination; diagnostic methods become inevitable while estimating the severity of valvular regurgitation and in the transformation of cardiac chambers as in reaction to the volume overload condition. Lately, a promising new technology, the Echocardiography with Doppler is found to facilitate the non-invasive recognition and assessment of the severity and etiology of valvular regurgitation. Accurate measurements of regurgitant volume in patients is of utmost importance since it aids in the estimation of the progression of the disease which in turn is vital for determining the optimal time for surgical repair or replacement. Approach: Color space conversion and anisotropic diffusion segmentation techniques are utilized in this study for the pre-processing stage of the quantification of mitral regurgitation. Flow field measurements are carried out with the aid of proximal flow convergence method. Results: A calculated value of flow rate, regurgitant orifice area, regurgitant fraction and the regurgitant volume for a regurgitant orifice in the cardiovascular system are obtained from the potential Color Doppler visualization of the flow convergence region. Conclusion: The research proposed provides a significant assessment of the echocardiographic and Doppler techniques employed in the evaluation of mitral valvular regurgitation in the patients. Additionally it also proffers the estimation of mildness, severity and eccentricity of mitral valvular regurgitation on basis of the scientific literature and a consensus of a panel of experts.

  19. Color Doppler ultrasonography evaluation of amblyopia

    Directory of Open Access Journals (Sweden)

    Ece Turan-Vural

    2013-07-01

    Full Text Available AIM: To assess the hemodynamic changes in the extraocular orbital vessels of amblyopic patients in comparison with non-amblyopic fellow eyes, using color Doppler ultrasonography(CDU. METHODS: Thirty-six eyes of 18 pediatric patients were included in the study(20 amblyopic, 16 normal. All eyes underwent color Doppler ultrasonography examination of ophthalmic artery, central retinal artery, and posterior ciliary artery. RESULTS: The only differences between the two groups with regard to color Doppler ultrasonography parameters was the significantly lower peak systolic velocity(32.70±11.60 vs 55.01±11.68, P=0.001and end-diastolic velocity(6.83±1.91 vs 13.99±4.15, P=0.001for ophthalmic artery in amblyopic eyes.CONCLUSION: Our study showed amblyopic eyes may present a decrease in retrobulbar blood flow velocity.

  20. CDE估测阻塞性睡眠呼吸暂停对左心室整体功能的影响%Influence of Obstructive Sleep Apnea Syndrome on Left Ventricular Global Function by Color Doppler Echocardiography

    Institute of Scientific and Technical Information of China (English)

    王超; 张芬; 王雷; 宫坤; 郭艳杰

    2015-01-01

    Objective:Obstructive sleep apnea (OSA) may predispose patients to and heart failure.The aim of this study was to determine the index of myocardial performance ( IMP) reflecting left ventricular global function in uncomplicated OSA pa-tients.Methods:Fifty-eight subjects without hypertension,diabetes mellitus, and any cardiac or pulmonary disease referred for evaluation of OSA underwent overnight polysomnography and complete echocardiographic assessment.According to the apnea hy-popnea index ( AHI) , subjects were divided into three groups: group 1, control subjects with nonapneic snorers ( AHI30, n=19) . Basic echocardiographic measurements LVM index were measured. Left ventricular IMP was calculated as ( isovolumic contraction time+isovolumic relaxation time) /aortic ejection time by Doppler echocardiography. Results:There were no significant differ-ences in age, sex, body mass index, heart rate, and systolic and diastolic blood pressure among the three groups. Left ventricular IMP was significantly higher in severe OSA patients than in controls ( P30,N=19)。应用超声心动图测量基本数据,计算IMP指标。左室IMP=(等容收缩时间+等容舒张时间)/主动脉射血时间。结果:三组受试者在年龄、性别、身体质量指数,心率,收缩压和舒张压无显著差异。左室IMP在重度OSA患者比对照组(P<0.01)显著增高。对照组和轻中度OSA、轻中度OSA和重度OSA受试者之间无显著差异。结论:本研究表明,重度OSA可导致左心室整体功能不全。

  1. Color Doppler US of the penis

    Energy Technology Data Exchange (ETDEWEB)

    Bertolotto, Michele (ed.) [Trieste Univ. Ospedale di Cattinara (Italy). Dept. Radiology

    2008-07-01

    This book provides a comprehensive reference and practical guide on the application of US to penile diseases and conditions. After introductory chapters on technical requirements and penile anatomy, subsequent chapters offer a systematic overview of the diverse applications of color Doppler US. The topics covered include erectile dysfunction, Peyronie's disease, priapism, trauma, tumors, the postoperative penis, inflammation, and fibrosis. Each topic is introduced by a clinical overview with the purpose of clarifying the problems and elucidating what the urologist may expect from color Doppler US. Thereafter, performance of the US study is explained and the pathological anatomy reviewed. High-quality images obtained with high-end US equipment are included. Each chapter also contains a section on the diagnostic information provided by other imaging modalities, and in particular MRI. (orig.)

  2. Transthoracic Doppler echocardiography – noninvasive diagnostic window for coronary flow reserve assessment

    Directory of Open Access Journals (Sweden)

    Dimitrow Paweł

    2003-04-01

    Full Text Available Abstract This review focuses on transthoracic Doppler echocardiography as noninvasive method used to assess coronary flow reserve (CFR in a wide spectrum of clinical settings. Transthoracic Doppler echocardiography is rapidly gaining appreciation as popular tool to measure CFR both in stenosed and normal epicardial coronary arteries (predominantly in left anterior descending coronary artery. Post-stenotic CFR measurement is helpful in: functional assessment of moderate stenosis, detection of significant or critical stenosis, monitoring of restenosis after revascularization. In the absence of stenosis in the epicardial coronary artery, decreased CFR enable to detect impaired microvascular vasodilatation in: reperfused myocardial infarct, arterial hypertension with or without left ventricular hypertrophy, diabetes mellitus, hypercholesterolemia, syndrome X, hypertrophic cardiomyopathy. In these diseases, noninvasive transthoracic Doppler echocardiography allows for serial CFR evaluations to explore the effect of various pharmacological therapies.

  3. [Color Doppler sonography of focal abdominal lesions].

    Science.gov (United States)

    Licanin, Zoran; Lincender, Lidija; Djurović, V; Salihefendić, Nizama; Smajlović, Fahrudin

    2004-01-01

    Color Doppler sonography (CDS--spectral, color and power), harmonic imaging techniques (THI, PHI), possibility of 3D analysis of picture, usage of contrast agents, have raised the values of ultrasound as a diagnostic method to a very high level. THI--non-linear gray scale modality, is based on the processing of higher reflected frequencies, that has improved a picture resolution, which is presented with less artifacts and limiting effects of obesity and gases. Ultrasound contrast agents improve analysis of micro and macro circulation of the examined area, and with the assessment of velocity of supply in ROI (wash in), distribution and time of signal weakening (wash out), are significantly increasing diagnostic value of ultrasound. Besides the anatomical and topographic presentation of examined region (color, power), Color Doppler sonography gives us haemodynamic-functional information on vascularisation of that region, as well as on pathologic vascularisation if present. Avascular aspect of a focal pathologic lesion corresponds to a cyst or haematoma, while coloration and positive spectral curve discover that anechogenic lesions actually represents aneurysms, pseudoaneurysms or AVF. In local inflammatory lesion, abscess in an acute phase, CDS shows first increased, and then decreased central perfusion, while in a chronic phase, a pericapsular vascularisation is present. Contribution of CDS in differentiation of hepatic tumors (hemangioma, HCC and metastasis) is very significant. Central color dots along the peripheral blood vessels and the blush phenomenon are characteristics of capillary hemangioma, peritumoral vascular ring "basket" of HCC, and "detour" sign of metastasis. The central artery, RI from 0.45 to 0.60 and radial spreading characterize FNH. Hepatic adenoma is characterized by an intratumoral vein, and rarely by a vascular hallo. Further on, blood velocity in tumor defined by Color Doppler, distinguishes malignant from benign lesion, where 40 cm/s is a

  4. Ecocardiografia modo Doppler pulsado em gatos clinicamente sadios Pulsed wave Doppler echocardiography in clinically healthy cats

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    R.O. Carvalho

    2006-06-01

    Full Text Available Estudou-se o fluxo sangüíneo através das quatro valvas cardíacas em 30 gatos clinicamente sadios, com idade entre um e cinco anos e peso médio de 4,08kg, por meio da ecocardiografia modo Doppler pulsado. Foram medidas a velocidade máxima e a velocidade média dos fluxos, e realizou-se uma análise qualitativa dos seus perfis. Os animais foram sedados pela combinação de quetamina (12mg/kg e acepromazina (0,04mg/kg, aplicados por via intramuscular. Observou-se correlação positiva entre os parâmetros avaliados e a freqüência cardíaca, com exceção daqueles medidos no fluxo da valva aórtica. Não se observou correlação entre velocidades máxima e média e freqüência cardíaca e entre aquelas e peso corporal, e não houve diferença entre sexos.Pulsed wave Doppler echocardiography was used to study blood flow across the cardiac valves in 30 five-year-old cats (average body weight = 4.08kg. Animals were sedated using a combination of ketamin (12mg/kg, IM and acepromazin (0.04mg/kg, IM. Peak and mean velocities were determined, and blood flow patterns were recorded at the four cardiac valves. All variables, except those characterizing aortic valve flow, were positively correlated with heart rate. Blood flow variables were not correlated, however, with body weight; and there were no differences between males and females.

  5. [Color-Doppler semiology in transplanted kidney].

    Science.gov (United States)

    Rivolta, R; Castagnone, D; Burdick, L; Mandelli, C; Mangiarotti, R

    1993-05-01

    Color-encoded duplex ultrasonography (CEDU) makes a more accurate technique in kidney graft monitoring by combining real-time US with pulsed Doppler studies of renal vasculature. It is a non-invasive and easy technique. Suitable to study the whole renal artery and vein, CEDU also allows the qualitative and quantitative assessment of the intrarenal vasculature and therefore the easy diagnosis of such vessel dysfunctions as arteriovenous fistulas following biopsy. Moreover, Doppler spectral analysis can be used to distinguish among different causes of renal allograft dysfunction--i.e. rejection, cyclosporine nephrotoxicity or acute tubular necrosis. The value of the resistive index for the differential diagnosis is discussed. CEDU allows a more reliable measurement of renal blood flow thanks to the more precise evaluation of renal artery diameter and mean flow velocity.

  6. Power and color Doppler ultrasound settings for inflammatory flow

    DEFF Research Database (Denmark)

    Torp-Pedersen, Søren; Christensen, Robin; Szkudlarek, Marcin

    2015-01-01

    OBJECTIVE: To determine how settings for power and color Doppler ultrasound sensitivity vary on different high- and intermediate-range ultrasound machines and to evaluate the impact of these changes on Doppler scoring of inflamed joints. METHODS: Six different types of ultrasound machines were used....... On each machine, the factory setting for superficial musculoskeletal scanning was used unchanged for both color and power Doppler modalities. The settings were then adjusted for increased Doppler sensitivity, and these settings were designated study settings. Eleven patients with rheumatoid arthritis (RA......) with wrist involvement were scanned on the 6 machines, each with 4 settings, generating 264 Doppler images for scoring and color quantification. Doppler sensitivity was measured with a quantitative assessment of Doppler activity: color fraction. Higher color fraction indicated higher sensitivity. RESULTS...

  7. Assessment of myocardial strain and strain rate by tissue doppler echocar-diography

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    Ekimova N.A.

    2013-03-01

    Full Text Available The objective of the article is to review the current data on the method of quantitative evaluation of cardiac mechanics — assessment of myocardial strain and strain rate according to the results of the tissue Doppler echocardiography and prospects of its clinical application.

  8. Assessment of right ventricular systolic function by tissue Doppler echocardiography

    DEFF Research Database (Denmark)

    Kjærgaard, Jesper

    2012-01-01

    is a promising tool for improving our understanding of right ventricular hemodynamics, several aspects of the technology must be evaluated. The accuracy and reproducibility of the technology is evaluated in vitro, and normal values, impact of changes in loading of the right ventricle, response to exercise...... gained from other quantitative echocardiographic measures of LV and RV function and pressure [VI]. Changes in tissue Doppler based measures of RV systolic function can be used to monitor the effect of selective vasodilation by phosphodiestares-5 inhibition in hypoxic pulmonary hypertension and exercise...... in normal individuals. Phosphodiestares-5 inhibition by sildenafil may predominantly be effective during hypoxia in resting conditions, and may improve the blunted response in RV contractility seen with exercise in hypoxia [VII]. Reduced RV free wall deformation can be quantified by tissue Doppler...

  9. Color Doppler US of superficial adenopathies; Il color Doppler nelle adenopatie superficiali

    Energy Technology Data Exchange (ETDEWEB)

    Giovagnorio, F. [Rome Univ. (Italy). 1. Cattedra di Radiologia

    1999-03-01

    Superficial lymph node are frequently involved in different diseases. Their location makes them suitable for effective assessment with high-resolution US and color Doppler has been recently suggested as a tool for increasing sensitivity in lymph node studies. Thus the author investigated the main vascular patterns detectable in abnormal superficial lymph nodes. [Italian] Numerosa malattie con natura differente coinvolgono i linfonodi superficiali: la localizzazione ne consente l'esplorazione con ecografia con alta risoluzione e lo studio mediante eco color Doppler e' stato proposto negli ultimi anni incontrando notevole sviluppo in tempi recenti. Scopo del lavoro e' illustrare il contributo personale nella definizione dei principali quadri riscontrabili nelle diverse adenopatie superficiali.

  10. Transthoracic Doppler echocardiography to predict optimal tube pulsing window for coronary artery CT angiography

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Gang, E-mail: cjr.sungang@vip.163.com [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China); Li, Min, E-mail: limin22000@yahoo.com.cn [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China); Jiang, Xiang-sen, E-mail: jiangxiangsen123@126.com [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China); Li, Li, E-mail: leely1976@yahoo.com.cn [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China); Peng, Zhao-hui, E-mail: zhaohuipeng_R@163.com [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China); Mu, Nan-nan, E-mail: munannan22000@sohu.com [Department of Medical Imaging, Jinan Military General Hospital, No. 25, Shifan Road, Jinan, Shandong Province 250031 (China)

    2012-09-15

    Rationale and objective: To evaluate the feasibility of transthoracic Doppler echocardiography to determine the optimal pulsing windows for CT coronary angiography to narrow the pulsing windows further, especially in higher heart rate. Materials and methods: Doppler was performed on 135 patients before CT scanning. For Doppler, the intervals with minimal motion were evaluated during both systole and diastole integrating electrocardiogram (ECG) intervals. For CT scanning, the retrospective ECG-gating was applied and the optimal reconstruction intervals were determined. The accuracy of Doppler analysis to predict the optimal reconstruction intervals was tested. The predicted length of pulsing windows was compared between Doppler analysis and traditional prospective ECG-gating protocol (heart rate ≦ 65 bpm, 60–76%; 66–79 bpm, 30–77%; ≧80 bpm, 31–47%). Results: According to Doppler analysis, the mean length of intervals with minimal motion in systole was 106.4 ± 39.2 ms and 125.2 ± 92.0 ms in diastole. When the intervals with minimal motion during diastole > 90 ms, the optimal reconstruction intervals were located at diastole; otherwise, at systole (P < 0.001). The optimal reconstruction intervals in 93.8% (132/135) patients could be predicted accurately by Doppler analysis. If the optimal reconstruction intervals predicted by Doppler were applied as the exposure windows, the mean length of pulsing windows should has been 105.2 ± 69.4 ms (range: 26.9–510.3 ms), which was significantly shorter than that of traditional prospective ECG-gating protocol (232.0 ± 120.2 ms, range: 93.2–427.3 ms, P < 0.001). Conclusion: Doppler can help detecting the optimal pulsing windows accurately. Prospective ECG-gating incorporating Doppler analysis may narrow pulsing windows significantly while maintaining image quality.

  11. Color Doppler echocardiography observing theraph of triscuspid valve regurgitation in foetus during middle and late pregnancy by normobaric oxygen%彩色多普勒超声心动图对常压氧治疗中晚期妊娠胎儿三尖瓣反流的疗效观察

    Institute of Scientific and Technical Information of China (English)

    郭子玉; 梁玉玲; 刘美娟

    2010-01-01

    Objective To analyze the curative effect of normobafic oxygen on the treatment of triscuspid valve regurgitation in foetus during middle and late pregnancy by Color Doppler echocardiography.Methods 245 patients with triscuspid valve regurgitation in foetus during middle and late pregnancy were divided into two groups,105 cases cured by low-flow、low concentrations、normobaric oxygen through nasal oxygen tube were me3sured by echocardiography,And 140 untreated patients were selected as the contrast group.Results 71 foetus triscuspid regnrgiration disappeared after treating by normobaric oxygen,10 cases impmved,the cure rate was 67.62%,the improvement rate was 9.52%,the effective rate of the treatment was 77.14%.there was no discrepancy between the treated group and control group(P>0.05).Conclusion Triscuspid regurgitation could not disappear and light earlier by low-flow、low concentrations、normobaric oxygen through nasal oxygen tube,which was recovered with normobaric oxygen on the treatment of certain fetul primary affection.%目的 利用彩色多普勒超声心动图分析常压氧治疗中晚期妊娠胎儿三尖瓣返流的疗效.方法 应用彩色多普勒超声心动图观察低流量、低浓度、常压下鼻导管吸氧疗法治疗中晚期妊娠胎儿三尖瓣返流105例前后的变化情况,并与140例胎儿三尖瓣返流未治疗组进行对照.结果 105例中71例经常压氧治疗后胎儿三尖瓣返流消失,10例好转.治愈率为67.62%,好转率为9.52%.有效率为77.14%,与对照组比较差异无显著性(P>0.05).结论 低流量、低浓度、常压下鼻导管吸氧疗法不能够使三尖瓣返流提前消失或好转,而吸氧可以治疗胎儿时期某些原发病,随着原发病的治愈,三尖瓣反流亦消失.

  12. Clinical significance of left ventricular false tendons diagnosed by color Doppler echocardiography for pilot%彩色多普勒超声心动图诊断飞行员左室假腱索及其临床意义

    Institute of Scientific and Technical Information of China (English)

    郝建华; 郭辉; 胡文莉; 蒋毅; 周锡江

    2010-01-01

    Objective To study the clinical significance of diagnosing pilot's left ventricular false tendons (LVFT) by color Doppler echocardiography.Methods The case history of 934 pilots who were examined by color Doppler echocardiography in recent 8 years was reviewed.Pilots were grouped by judging if the LVFT was diagnosed.The detection rate of premature ventricular contraction and the change of T wave or S-T, as well as age were compared between LVFT group and healthy group.Results There were 98 cases of LVFT picked out of 934 pilots; the detection rate was 10.49%.Masculine of premature ventricular contraction and the change of T wave or S-T in LVFT group showed significant difference (x2=97.71 and 70.16, P<0.01) but for age (t=1.479, P>0.05).Conclusions LVFT shows certain relationship with premature ventricular contraction and the change of T wave or S-T except the reason of organic heart disease.Even LEFT taken as a kind of normal anatomical variation but it has the possibility of evoking premature ventricular contraction after all.Caring LVFT is suggested in medical identification of pilot.%目的 探讨飞行员左室假腱索的彩色多普勒超声心动图诊断及其临床意义.方法 对我院近8年来进行彩色多普勒超声心动图检查的934例男性飞行员资料进行分析,按是否存在左室假腱索对飞行员进行分组,比较两组室性早搏、T波或ST-T改变的检出率及年龄.结果 934例飞行员发现有左室假腱索98例,检出率10.49%,无假腱索者836例(占89.51%).左室假腱索组与无假腱索组飞行员所出现的室性早搏阳性率和T波或ST-T改变阳性率组间比较,差异有统计学意义(x2=97.71、70.16,P<0.01),两组年龄比较无显著差异(t=1.479,P>0.05).结论 除外器质性心脏病,飞行员左室假腱索与临床出现的室性早搏和T波或ST-T改变有一定的关联性,左室假腱索的检出对飞行员的医学健康鉴定有一定的诊断价值和临床意义.

  13. Evaluating Peripheral Vascular Injuries: Is Color Doppler Enough for Diagnosis?

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    Mohd Lateef Wani

    2014-03-01

    Full Text Available Background:: Vascular injury poses a serious threat to limb and life. Thus, diagnosis should be made immediately with minimally invasive methods. Doppler is a good aid in diagnosis of vascular injury. Methods:: The present prospective study was conducted on 150 patients who presented with soft signs (the signs which are suggestive but not confirmatory of vascular injury. They were subjected to color Doppler examination before exploration. The patients with the features of vascular injury on color Doppler were subjected to exploration. On the other hand, those who had normal Doppler were subjected to CT- angiography. Then, the findings of the exploration were matched with those of color Doppler. The data were analyzed using the SPSS statistical software. Results:: Out of the 150 Doppler examinations, 110 (73.33% were reported as positive, while 40 were reported as negative for vascular injury. These were subjected to CT-angiography and seven of them had the features of vascular injury on CT-angiography. All the patients with positive Doppler or CT angiography findings were subjected to exploration. Doppler had a sensitivity of 94% and specificity of 82.5% in diagnosis of vascular injury using Binary classification test. Conclusions:: Color Doppler is an easily available, reliable, and handy method of diagnosing a vascular injury. It has a very high sensitivity and specificity in diagnosis of vascular injuries.

  14. [Correlation of the transaortic gradient determined with doppler echocardiography versus catheterization in patients with aortic stenosis].

    Science.gov (United States)

    Illescas, J; Enciso, R; Vidrio, M; de la Torre, N; Baduí, E

    1991-01-01

    The purpose of this report is to evaluate the reliability of a non-invasive estimation of a transaortic gradient in patients with valvular aortic stenosis by doppler echocardiography. We compared the transvalvular gradients obtained by cardiac catheterization (invasive) versus the estimation by non-invasive technique such as continuous-wave doppler in 30 consecutive patients with valvular aortic stenosis. When compared the peak velocity (Vmax) of the aortic jet versus the gradient obtained by cardiac catheterization we found a correlation coefficient (r) of 0.83 and when compared the gradient obtained by both methods we found an r value of 0.85. These results show that the calculations of aortic gradient by echo-doppler, are reliable. Besides this method allowed us to establish the correct diagnosis and to follow up these patients.

  15. [The usefulness of range-gated pulsed Doppler echocardiography. A review (author's transl)].

    Science.gov (United States)

    Lange, L; Allen, H D; Goldberg, S J; Sahn, D J

    1979-03-01

    Single-crystal RGPD Echocardiography has clearly become a useful noninvasive ultrasonic method which enlarges the capabilities of investigating the heart. Recording of flow direction and showing disturbed flow allows additional clarification and confirmation of various diagnoses. This single-crystal technique does not allow flow quantification at the present time. The TIH and auditory signal displays of Doppler shift as presently utilized in commercial devices allow qualitative observation but require much experience in test performance and evaluation. The future here is probably in the area of spectral analysis. Present instrumentation employs M-mode echo for Doppler sample localization. Drawbacks include inprecise sample beam localization and non-variable sample volume size. Further, standardization of the Doppler signal is necessary. Combination with 2-D echo in the future will allow more precise sample beam localization and accuracy in flow quantification. The latter area has particular promise and is under investigation but is not yet commercially available.

  16. Ventricular structure and function in children with sickle cell disease using conventional and tissue Doppler echocardiography.

    Science.gov (United States)

    Eddine, Ahmad Charaf; Alvarez, Ofelia; Lipshultz, Steven E; Kardon, Richard; Arheart, Kristopher; Swaminathan, Sethuraman

    2012-05-01

    Conventional 2-dimensional, M-mode, and spectral Doppler echocardiographic techniques have documented abnormal ventricular function in adults with sickle cell disease (SCD), but assessments in children are conflicting. Tissue Doppler echocardiography (TDE) provides additional information about myocardial function. Two-dimensional, M-mode, tricuspid regurgitation jet velocity (TRJV) data, and tissue Doppler echocardiographically derived myocardial velocity measurements of left ventricular (LV) and right ventricular function were taken from children with SCD compared to those of similar healthy historical controls and correlated with clinical characteristics and hemoglobin levels. Compared to 55 controls, 54 children with SCD (mean age 14.2 years, range 6 to 21) had a larger left ventricle, greater LV mass, and higher LV fractional shortening; 30% had increased pulmonary artery pressure (TRJV ≥2.5 m/s). Conventional echocardiographic measurements of LV systolic function and spectral Doppler measurements of LV and right ventricular diastolic function were essentially normal, but TDE indicated that 31% of SCD children had evidence of LV diastolic dysfunction (peak early diastolic velocity of LV inflow Doppler/peak early diastolic velocity at lateral mitral valve annulus >8), a finding that correlated with lower hemoglobin levels. Although decreasing hemoglobin levels in children with SCD correlated with LV hypertrophy, LV dilation, and LV diastolic dysfunction, long-term transfusion or hydroxyurea therapy did not affect these measurements. In conclusion, 1/3 of children with SCD had tissue Doppler echocardiographic evidence of LV diastolic dysfunction, which was correlated with hemoglobin levels. Adding serial assessments of ventricular function with TDE to conventional echocardiography may detect early cardiac changes, especially in children with severe anemia.

  17. COLOR DOPPLER ULTRASOUND IN EVALUATION OF SCROTAL LESIONS

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    Desai Sanjay

    2015-11-01

    Full Text Available : Color Doppler ultrasound is a non-invasive, non-ionising and rapid method for scrotal examination. The present study is carried out to evaluate clinically suspected cases of scrotal lesions, the sensitivity, specificity of color doppler. MATERIAL AND METHODS: This prospective study comprises 120 patients of different age groups with clinical suspicion of scrotal lesions. Color doppler ultrasound was done with 7.5MHz transducer. RESULTS: Of the total 120 cases, benign conditions 111 (92.5% is more common than malignant 9 (7.5%. In benign group commonest diagnoses were hydrocele, epididymo-orchitis, varicocele and epididymal cyst. In malignant group teratocarcinoma, choriocarcinoma, seminoma, lymphoma, embryonal cell carcinoma, yolk sac tumor with teratocarcinoma. The sensitivity for diagnosing extratesticular lesions was 83.14% and for testicular lesions 88.57%. CONCLUSION: Color doppler ultrasound is helpful in differentiating extratesticular and intratesticular lesions. It should be performed in all patients with suspected scrotal lesions

  18. Assessment of Regional Myocardial Displacement via Spectral Tissue Doppler Compared with Color Tissue Tracking

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    Zahra Ojaghi-Haghighi

    2008-12-01

    Full Text Available Background: The recent developments in tissue Doppler imaging (TDI now more than ever permit the quantification of the myocardial function. In the current systems, tissue tracking or displacement curves are generated from color tissue Doppler data through the instantaneous temporal integral of velocity-time curves. Methods: The purpose of the present study was to assess regional myocardial displacement via spectral TDI. Maximum myocardial velocities were extracted from spectral pulsed tissue Doppler images using a developed computer program and were integrated throughout the cardiac cycle. Spectral tissue Doppler echocardiography was performed to evaluate longitudinal and radial functions in 20 healthy men, and the calculated end-systolic displacements were subsequently compared with the displacements measured from the same areas via color tissue tracking. Results: According to the Bland-Altman analysis between spectral tissue tracking and color tissue tracking, the significant arithmetic mean was 7.34 mm with SD mean differences of ±2.24 mm in all of the evaluated segments. Despite significant differences (p<0.001, there was a good significant correlation between the two methods (r=0.79, p<0.001. Conclusion: A verification study showed that the proposed approach had the ability to assess regional myocardial displacement using spectral TDI, which can be used in a wider range of equipment than is currently possible.

  19. Evaluation of Right Ventricular Function by Tissue Doppler Echocardiography in Asthmatic Children

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    Mehdi Ghaderian

    2016-11-01

    Full Text Available BackgroundAsthma is the most chronic inflammatory disorder of the airways in children and asthmatic patients can experience cardiac dysfunction, pulmonary hypertension and finally cor pulmonale later in life. We aimed to investigate Right Ventricular (RV functions in asthmatic children by conventional and tissue Doppler echocardiography (TDE.Materials and Methods Pulmonary function tests, conventional and TDE examinations were performed on 42 asthmatic and 42 age- and gender matched healthy controls subjects (n=42.Results Compared with healthy children the RV wall was statistically thicker among asthmatic patients (P= 0.01. Conventional echocardiography had not significant difference between cases and controls, but TDE had significant difference between these two groups. Peak E’ velocity, A’ velocity, E’/A’ ratio and S’ in lateral and medial sites of tricuspid annulus valve, were significantly differ from control group in our patients (P

  20. Ultrasonography with color Doppler and power Doppler in the diagnosis of periapical lesions

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    Sumit Goel

    2011-01-01

    Full Text Available Aim: To evaluate the efficacy of ultrasonography (USG with color Doppler and power Doppler applications over conventional radiography in the diagnosis of periapical lesions. Materials and Methods: Thirty patients having inflammatory periapical lesions of the maxillary or mandibular anterior teeth and requiring endodontic surgery were selected for inclusion in this study. All patients consented to participate in the study. We used conventional periapical radiographs as well as USG with color Doppler and power Doppler for the diagnosis of these lesions. Their diagnostic performances were compared against histopathologic examination. All data were compared and statistically analyzed. Results: USG examination with color Doppler and power Doppler identified 29 (19 cysts and 10 granulomas of 30 periapical lesions accurately, with a sensitivity of 100% for cysts and 90.91% for granulomas and a specificity of 90.91% for cysts and 100% for granulomas. In comparison, conventional intraoral radiography identified only 21 lesions (sensitivity of 78.9% for cysts and 45.4% for granulomas and specificity of 45.4% for cysts and 78.9% for granulomas. There was definite correlation between the echotexture of the lesions and the histopathological features except in one case. Conclusions: USG imaging with color Doppler and power Doppler is superior to conventional intraoral radiographic methods for diagnosing the nature of periapical lesions in the anterior jaws. This study reveals the potential of USG examination in the study of other jaw lesions.

  1. Doppler echocardiography imaging in detecting multi-valvular lesions: a clinical evaluation in children with acute rheumatic fever.

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    Pushpa Shivaram

    Full Text Available RATIONALE: Doppler echocardiography has been demonstrated to be accurate in diagnosing valvular lesions in rheumatic heart disease (RHD when compared to clinical evaluation alone. OBJECTIVE: To perform Doppler echocardiography in children clinically diagnosed by the Jones criteria to have acute rheumatic fever (ARF, and to then compare the effectiveness of echo in detecting single/multi-valvular lesions with that of the initial clinical evaluation. METHODS AND RESULTS: We enrolled 93 children who were previously diagnosed with ARF by clinical examination. Presence of valvular lesions were enlisted, first by clinical auscultation, and then by performing Doppler echocardiography. We found that Doppler echocardiography was a sensitive technique, capable of detecting valvular lesions that were missed by clinical auscultation alone. Echocardiography of patients with carditis revealed mitral regurgitation to be the most common lesion present (53 patients, 56.98%, followed by aortic regurgitation in 21 patients (22.6%. The difference between clinical and echocardiographic diagnosis in ARF children with carditis was statistically significant for mitral regurgitation, aortic regurgitation and tricuspid regurgitation. Clinical auscultation alone revealed 4 cases of mitral stenosis, 39 mitral regurgitation, 14 aortic regurgitation, 9 tricuspid regurgitation; in contrast, echo revealed 5 cases of mitral stenosis, 53 mitral regurgitation, 21 aortic regurgitation, 18 tricuspid regurgitation. CONCLUSION: Doppler echocardiography is a more sensitive technique for detecting valvular lesions. In the setting of ARF, echo enables a 46.9% higher detection level of carditis, as compared to the clinical examination alone. Echo was very significant in detecting regurgitation lesions, especially for cases of tricuspid regurgitation in the setting of multivalvular involvement. The results of our study are in accordance with previous clinical studies, all of which clearly

  2. Myocardial Strain and Strain Rate Imaging: Comparison between Doppler Derived Strain Imaging and Speckle Tracking Echocardiography

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    Anita Sadeghpour

    2013-05-01

    Full Text Available Regional myocardial function has been traditionally assessed by visual estimation (1. Echocardiographic strain imaging which is known as deformation imaging, has been emerged as a quantitative technique to accurately estimate regional myocardial function and contractility. Currently, strain imaging has been regarded as a research tool in the most echocardiography laboratories. However, in recent years, strain imaging has gain momentum in daily clinical practice (2. The following two techniques have dominated the research arena of echocardiography: (1 Doppler based tissue velocity measurements, frequently referred to tissue Doppler or myocardial Doppler, and (2 speckle tracking on the basis of displacement measurements (3. Over the past two decades, Tissue Doppler Imaging (TDI and Doppler –derived strain (S and strain rate (SR imaging were introduced to quantify regional myocardial function. However, Doppler–derived strain variables faced criticisms, with regard to the angle dependency, noise interference, and substantial intraobserver and interobserver variability. The angle dependency is the major weakness of Doppler based methodology; however, it has the advantage of online measurements of velocities and time intervals with excellent temporal resolution, which is essential for the assessment of ischemia (4. Speckle-tracking echocardiography (STE or Non Doppler 2D strain echocardiography is a relatively new, largely angle-independent technique that analyzes motion by tracking natural acoustic reflections and interference patterns within an ultrasonic window. The image-processing algorithm tracks elements with approximately 20 to 40 pixels containing stable patterns and are described as ‘‘speckles’’ or ‘‘fingerprints’’. The speckles seen in grayscale B-mode (2D images are tracked consecutively frame to frame (5, 6. Assessment of 2D strain by STE is a semiautomatic method that requires definition of the myocardium

  3. Study on imaging characteristics of color Doppler echocardiography on adult mirror image dextrocardia and deformity%成人镜像右位心及合并畸形彩色多普勒超声心动图特征研究

    Institute of Scientific and Technical Information of China (English)

    侯传举; 邹苏娅; 邓东安; 朱鲜阳; 韩秀敏; 刘剑立; 胡斌; 王巧玲

    2011-01-01

    目的:探寻成人镜像右位心及合并畸形彩色多普勒超声心动图(CDE)特征.方法:应用CDE检查31例成人镜像右位心及合并畸形,寻找CDE特征,所有病例均经心导管对照,21例手术证实.结果:根据CDE特征对29例做出正确诊断,诊断准确率93.5%,误诊2例.成人镜像右位心及合并畸形CDE特征明显;①成人镜像右位心合并11种先天性心脏病,其中ILL型右心室双出口(22.6%)、IDD型矫正性大动脉转位(19.4%)和法乐四联症(19.4%)多见,心室双人口(12.9%)和室间隔缺损(6.5%)少见,两腔心、二尖瓣闭锁、三尖瓣闭锁、全肺静脉异位引流、孤立性双腔右心室和孤立性二尖瓣裂隙(各3.2%)更少见;②成人镜像右位心无论合并那种先天性心脏病均为心房反位;③成人镜像右位心合并右心室双出口大动脉均为左转位;合并矫正性大动脉转位大动脉均为右转位;(4)成人镜像右位心合并肺动脉狭窄(93.5%)多见,肺动脉高压(6.5%)少见.肺动脉狭窄时,彩色多普勒血流显像显示过肺动脉五彩镶嵌射流束血流信号;⑤合并房间隔缺损和室间隔缺损时,彩色多普勒血流显像显示过房间隔或室间隔左向右或双向五彩镶嵌分流束血流信号.结论:成人镜像右位心及合并畸形CDE特征明显,应用CDE对成人镜像右位心及合并畸形可做出正确诊断,但检查者必须熟练掌握本病解剖.在探查手法上与正常位心脏明显不同,检查前阅读X线正位胸片对CDE正确诊断有帮助,并可提高检查效率.%Objective:To explore the characteristics of color Doppler echocardiography (CDE) adult mirror image dextrocardia and deformiry. Methods Thirty-one patients with adult mirror image dextrocardia and deformity were examined by CDE. All cases with mirror image dextrocardia and deformity underwent angiocardiography examination after CDE, twenty-one cases were proved by surgical operations. Results: Twenty-nine cases were diagnosed

  4. Cardiovascular assessment of patients with Ullrich-Turner's Syndrome on Doppler echocardiography and magnetic resonance imaging

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    Castro Ana Valéria Barros de

    2002-01-01

    Full Text Available OBJECTIVE: To assess the cardiovascular features of Ullrich-Turner's syndrome using echocardiography and magnetic resonance imaging, and to correlate them with the phenotype and karyotype of the patients. The diagnostic concordance between the 2 methods was also assessed. METHODS: Fifteen patients with the syndrome were assessed by echocardiography and magnetic resonance imaging (cardiac chambers, valves, and aorta. Their ages ranged from 10 to 28 (mean of 16.7 years. The karyotype was analyzed in 11 or 25 metaphases of peripheral blood lymphocytes, or both. RESULTS: The most common phenotypic changes were short stature and spontaneous absence of puberal development (100%; 1 patient had a cardiac murmur. The karyotypes detected were as follows: 45,X (n=7, mosaics (n=5, and deletions (n=3. No echocardiographic changes were observed. In regard to magnetic resonance imaging, coarctation and dilation of the aorta were found in 1 patient, and isolated dilation of the aorta was found in 4 patients. CONCLUSION: The frequencies of coarctation and dilation of the aorta detected on magnetic resonance imaging were similar to those reported in the literature (5.5% to 20%, and 6.3% to 29%, respectively. This confirmed the adjuvant role of magnetic resonance imaging to Doppler echocardiography for diagnosing cardiovascular alterations in patients with Ullrich-Turner's syndrome.

  5. Color Doppler US in the acute scrotal disease

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    Cha, Yoo Mi; Yang, Dal Mo; Kang, Sook Wook; Kim, Hyung Sik; Lee, Young Seok; Kim, Hyeon Hoe [Chung Ang Gil Hospital, Incheon (Korea, Republic of)

    1993-12-15

    To evaluate the utility of Color doppler US in the patients with acute scrotal pain, we retrospectively analyzed 37 patients referred for Color Doppler US of the scrotum. The diagnosis was confirmed by means of appropriate response to antibiotic treatment (31 cases) or surgery (6 cases). Thirty one of 37 patients were diagnosed as inflammatory disease (24 cases of epididymitis, 7 cases of epididymo-orchitis). Twenty three of 24cases of epididymitis had increased epididymal flow, while 6 of 7 cases of epididymo-orchitis had increased epididymal and testicular flow. Five patients were confirmed as testicular torsion, and in all cases nointratesticular blood flow was identified on the symptomatic side. In one case of torsion of appendix testis, epididymis was enlarged and there were increased signals suggesting epididymitis on Color Doppler US, but was confirmed by surgery as torsion of appendix testis. Therefore, the differentiation between torsion and inflammatory disease was possible by using Color Doppler US of the scrotum in 34 of 37 cases in our study. On the basis of our results, we may conclude that Color Doppler US can simultaneously display blood flow and detailed anatomic images, and function as an effective means of evaluating patients with acute scrotal disease

  6. Aliasing-tolerant color Doppler quantification of regurgitant jets.

    Science.gov (United States)

    Stewart, S F

    1998-07-01

    Conservation of momentum transfer in regurgitant cardiac jets can be used to calculate the flow rate from color Doppler velocities. In this study, turbulent jets were simulated by finite elements; pseudocolor Doppler images were interpolated from the computations, with aliasing introduced artificially. Jets were also imaged by color Doppler in an in vitro flow system. To suppress aliasing errors, jet velocities were fitted iteratively to a fluid mechanical model constrained to match the orifice velocity (measured without aliasing by continuous-wave Doppler). At each iteration, the model was used to detect aliased velocities, which were excluded during the next iteration. Iteration continued until the flow rate calculated by the model and number of calculated nonaliased pixels were unchanged. The good correlations between measured and calculated flow rates in the experimental (R2 = 0.933) and computational studies (R2 = 0.990) suggest that this may be a clinically useful approach even in aliased images. Published by Elsevier Science Inc.

  7. Gestational trophoblastic neoplasia: efficacy of color doppler ultrasound

    Energy Technology Data Exchange (ETDEWEB)

    Song, Sun Wha; Jee, Won Hee; Choe, Bo Young; Byun, Jae Young; Choi, Byung Gil; Shinn, Kyung Sub [Catholic Univ. College of Medicine, Seoul (Korea, Republic of)

    1997-04-01

    To evaluate the efficacy of color Doppler ultrasound (US) in the diagnosis of gestational trophoblastic neoplasia (GTN). Intralesional color flows and resistive index (RI) on color Doppler US were prospectively analyzed in 21 consecutive suspected GTN cases. RI of the intralesional artery was investigated on the basis of the presence or absence of mass and metastasis. Correlation between RI of intralesional artery and urinary {beta}-hCG was also investigated. Intralesional color flows were identified in 15 patients with GTN. On operation, intralesional color flows were observed in one of two patients in whom the presence of completely necrotic tissue was confirmed. Intralesional color flows, however, were not detected in four patients who were proved not to be GTN sufferers. Sensitivity, specificity, accuracy, positive and negative predictive values, and accuracy were 100%, 83%, 95%, 94% and 100%, respectively. Significant correlation between RI of the intralesional artery and urinary {beta}-hCG was not established (p=0.49, r=0.19). RI of this artery was not substantially different between groups with and without mass, and between groups with and without metastasis (p=0.32, p=0.82). The current study demonstrates that color Doppler US is a sensitive and useful method for the diagnosis of GTN.

  8. Noninvasive monitoring of cardiac function in a chronic ischemic heart failure model in the rat: Assessment with tissue Doppler and non-Doppler 2D strain echocardiography

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    Baumann Gert

    2011-05-01

    Full Text Available Abstract Objectives Feasibility of noninvasive monitoring of cardiac function after surgically induced ischemic cardiomyopathy with tissue Doppler and non-Doppler 2D strain echocardiography in rats. Background The optimal method for quantitative assessment of global and regional ventricular function in rats with chronic heart failure for research purposes remains unclear. Methods 20 rats underwent suture ligation of the left anterior descending coronary artery via a left thoracotomy to induce ischemic cardiomyopathy. Echocardiographic examination with estimation of left ventricular wall thickness, diameters, fractional shortening, ejection fraction, wall velocities as well as radial strain were performed before and 4 weeks after surgery. Results Mean LVEF decreased from 70 ± 6% to 40 ± 8% (p Conclusion It is feasible to assess dimensions, global function, and regional contractility with echocardiography in rats suffering from chronic heart failure after myocardial infarction. Particularly regional function can be exactly evaluated if tissue Doppler and 2D strain is used.

  9. Structural and functional characteristics of rat hearts with and without myocardial infarct. Initial experience with doppler echocardiography

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    Valdir A. Moisés

    2000-08-01

    Full Text Available OBJECTIVE: To assess by Doppler echocardiography the structural and functional alterations of rat heart with surgical induced extensive myocardial infarction. METHODS: Five weeks after surgical ligature of the left coronary artery, 38 Wistar-EPM rats of both sexes, 10 of them with extensive infarction, undergone anatomical and functional evaluation by Doppler echocardiography and then euthanized for anatomopathological analysis. RESULTS: Echocardiography was 100% sensible and specific to anatomopathological confirmed extensive miocardial infarction. Extensive infarction lead to dilatation of left ventricle (diastolic diameter: 0.89cm vs.0.64cm; systolic: 0.72cm vs. 0.33cm and left atrium (0.55cm vs. 0.33cm; thinning of left ventricular anterior wall (systolic: 0.14cm vs. 0.23cm, diastolic: 0.11cm vs. 0.14cm; increased mitral E/ A wave relation (6.45 vs. 1.95. Signals of increased end diastolic ventricle pressure, B point in mitral valve tracing in 62.5% and signs of pulmonary hypertension straightening of pulmonary valve (90% and notching of pulmonary systolic flow (60% were observed in animals with extensive infarction. CONCLUSION: Doppler echocardiography has a high sensitivity and specificity for detection of chronic extensive infarction. Extensive infarction caused dilatation of left cardiac chambers and showed in Doppler signals of increased end diastolic left ventricular pressure and pulmonary artery pressure.

  10. Transthoracic Doppler echocardiography compared with positron emission tomography for assessment of coronary microvascular dysfunction

    DEFF Research Database (Denmark)

    Michelsen, Marie Mide; Mygind, Naja Dam; Pena, Adam

    2017-01-01

    stenosis at invasive coronary angiography, TTDE CFVR by dipyridamole induced stress and MBFR by rubidium-82 PET with adenosine was successfully measured in 107 subjects. Repeatability of TTDE CFVR was assessed in 10 symptomatic women and in 10 healthy individuals. RESULTS: MBFR was systematically higher......BACKGROUND: Coronary microvascular function can be assessed by transthoracic Doppler echocardiography as a coronary flow velocity reserve (TTDE CFVR) and by positron emission tomography as a myocardial blood flow reserve (PET MBFR). PET MBFR is regarded the noninvasive reference standard...... for measuring coronary microvascular function but has limited availability. We compared TTDE CFVR with PET MBFR in women with angina pectoris and no obstructive coronary artery disease and assessed repeatability of TTDE CFVR. METHODS: From a cohort of women with angina and no obstructive coronary artery...

  11. Color doppler in diagnosis of pathological changes in blood vessels

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    Mladenović Saša

    2014-01-01

    Full Text Available Color Doppler ultrasound is a method that allows noninvasive imaging of blood flow through a blood vessel and analysis of blood vessels, which can be made to flow disturbance and the presence of plaque and narrowing of the blood vessel. Color Doppler ultrasonography allows early detection of pathological changes in blood vessels, which contributes to adequate preventive and therapeutic procedures in the prevention of cerebrovascular disorders. The aim of this paper is to demonstrate the importance of color Doppler ultrasound blood vessels in the diagnosis of pathological changes in the blood vessels of the neck. To create a work used the material of the Cabinet of color Doppler ultrasonography of the Health Center in Donja Gusterica in a prospective study of a random sample of 60 patients were reviewed in January 2014. Gender analysis examined patients, women were 32 (53.33% and 28 men (46.67%. Looking at the age of examined patients, we have found that most of them 43 (71.67% over the age of 50 years, while we found 17 (28.33% patients under 50 years. Atherosclerotic plaques were diagnosed in 36, a change in the shape of the carotid arteries in 29 patients. Atherosclerotic plaque, we usually find the bifurcation ACC and the Origin ACI in 23 (63.89%. Duplex sonography shows what angioneurologists and vascular surgeons are most interested in: the morphology of arterial lesions and hemodynamic effects.

  12. Color Doppler Ultrasonographic Features of Hashimoto's Thyroiditis

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    Lee, Joo Hyuk; Kim, Mie Young; Rho, Eun Jin; Yi, Jeong Geun; Han, Chun Hwan [Kangnam General Hospital Public Corporation, Seoul (Korea, Republic of); Hwang, Hee Yong [Choong Ang Gil Hospital, Incheon (Korea, Republic of)

    1995-06-15

    Color Doppler ultrasonographic(US) features of 28 patients with Hashimato's thyroiditis were evaluated with regard to echo and color-flow patterns. Correlation of color-flow pattern with thyroid function was performed. All 28 patients showed varying degrees of diffuse enlargement of the thyroid gland and a heterogeneous echo pattern.Color-flow pattern of increased blood flow. Low to moderate, focally increased blood flow was seen in 26 patients(92.8%). Of these 26 patients, 24 patients showed subclinical hypothyroidism or euthyroidism. Two patients who showed hyperthyroidism showed several pieces of focally increased color flow, Which was noted during both systole and diastole. Diffuse, multifocal color-flow throughout thyroid gland was seen in two patients with Hashimato's thyroiditis: one with clinical hypothyroidism and the other with subclinical hypothyroidism. Even though Hashimoto's thyroiditis showed variable color-flow patterns, we believe that heterogenous parenchymal echopattern with low or moderately increased flow is a rather characteristic feature of Hashimoto's thyroiditis, and we suggest that color Doppler US provides additional information for evaluation of Hashimoto's thyroiditis

  13. 镜像右位心及合并畸形彩色多普勒超声心动图特征和规律性研究%Atudy on Imaging Characteristics and Regularity of Color Doppler Echocardiography on Mirror Image Dextrocardia and Deformity

    Institute of Scientific and Technical Information of China (English)

    侯传举; 齐岩梅; 邓东安; 朱鲜阳; 韩秀敏; 卢迪

    2011-01-01

    Objective To explore the image characteristics and regularity of color Doppler echocardiography (CDE)on mirror image dextrocardia and deformity. Methods One hundred patients with mirror image dextrocardia and deformity were examined by CDE and the image characteristics and regularity of CDE were found. Ninety-five cases with mirror image dextrocardia and deformity underwent angiocardiography examination after CDE, Seventy-six cases were proved by surgical operations. Results Ninety-two cases were diagnosed correctly by the features of CDE imaging. The diagnostic rate of accuracy is 92 %,eight cases were misdiagnosed. The features in the mirrorimage dextrocardia and deformity CDE image characteristics and regularity were obvious. ① Mirror image dextrocardia usually combines twelve kinds congenital heart disease,among them, ILL type double outlet right ventricle(27 % )are common. IDD type corrected transposition of the great arteies( 17 % ),tetralogy of Fallot(16 % )and ventrcluar septal defect( 12 % )are not as common as the above. Double-inlet ventricle( 7 % ), tricuspid atresia( 5 % ), bilocular heart( 5 % ), ILL type complete transposition of the great arteies(4% ), mitral atresia(2 % ), isolated right ventricular outlet stenosis(2 % ), total anomalous pulmonary venous drainage( 2 % ), and isolated cleft mitral valve ( 1% ) are rare. ② Despite the diversity of combined congenital heart disease,all cases of adult mirror image dextrocardia have a common CDE characteristic of atria situs inversus. ③ adult mirror image dextrocardia combined double outlet right ventricle and complete transposition of the great arteies are left-transposition,combined corrected transposition of the great arteies are right-transposition.④ Mirror image dextrocardia combined pulmonary stenosis(80 % ) are common, pulmonary normal( 12 % ) and pulmonary hypertension(8%)are rare. ⑤ atral septal defect and ventricular septal defect color Doppler flow

  14. Color Doppler Ultrasonography in Evaluation of the Postoperative Penis

    Directory of Open Access Journals (Sweden)

    M. Ghafouri

    2005-08-01

    Full Text Available Introduction & Background: Color Doppler ultrasonography (US is the imaging modality of choice in patients with penile diseases. Ultrasonography has a well-established role in evaluating erectile dysfunction as well as penile trauma, scarring, deformity, and tumors. The normal postoperative anatomy and the pathologic changes that can occur in cases of surgical complications can be successfully investigated with US. Gray Scale (B Mode and Color Doppler US clearly depicts the normal penile anatomy and postoperative changes. It is also effective in evaluating surgery-related complications and determining the causes of erectile dysfunction and other un-satisfactory long¬term results. Color Doppler US is the imaging modality of choice in evaluating patients who have undergone penile surgery. Here we aim to illustrate the gray-scale and color Doppler US appearance of normal penis, discuss the main penile surgical procedures, recognize the typical US features of the postopera-tive penis, and describe the US appearance of various postoperative complications. Patients & Methods: This article is the result of evaluating 42 patients referred to the radiology ward of Hashemi-Nejad Hospital, Iran University of Medical Sciences in the years 2002 to 2005 for ultrasonography of penis to assess the penis after different penile surgical procedures (urethral surgery, correction of penile mal-formations, prosthesis implantation, vascular surgery for impotence, surgical management of priapism, phallic reconstruction. The US apparatus was Esaote Technos MP, with linear multifrequency 5-8.5MHz. transducer. Results: A variety of early and late surgical complications could be identified, such as extraalbugineal patho-logic fluid collections and fibrosis. Moreover, Doppler US of the penile vessels and vascular anastomoses fol-lowing revascularization allowed direct evaluation of flow characteristics, shunt patency, and venous en-gorgement. Color Doppler US was also

  15. Doppler echocardiography and myocardial dyssynchrony: a practical update of old and new ultrasound technologies

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    Galderisi Maurizio

    2007-09-01

    Full Text Available Abstract Morbidity and mortality rates are higher in patients with severe left ventricular (LV systolic dysfunction and ECG-derived prolonged QRS interval than in those with normal QRS duration. QRS duration is currently used on the grounds that it reflects the presence of ventricular dyssynchrony. However, 30–40% of patients selected on the basis of a prolonged QRS do not receive benefit by cardiac resynchronization therapy (CRT since they do not show any significant inverse LV remodeling and QRS duration does not accurately distinguish responders to CRT. Consequently, mechanical dyssynchrony (particularly intra-ventricular dyssynchrony seems to be much more important than electrical dyssinchrony. Pre- and post-echocardiographic assessment should require the combination of conventional and specific applications ranging from M-mode and pulsed/continuous Doppler, to pulsed Tissue Doppler, the off-line analysis of colour Tissue Velocity Imaging, Strain Rate Imaging, and real time three-dimensional reconstruction However, there is not no consensus about the best approach and the best ultrasound parameter for selecting candidates to CRT and ECG representation of abnormal cardiac conduction still remains as the main criterion in guidelines. This review is a practical update of ultrasound methods and measurements of atrio-ventricular, inter-ventricular and intra-ventricular dyssynchrony and describes experiences which used either conventional Doppler echocardiography and more advanced techniques. By these experiences, the global amount of LV dyssynchrony seems to be critical: the greater intra-ventricular dyssynchrony, the higher the possibility of significant LV inverse remodeling. After CRT, it is necessary also to evaluate the optimal atrio-ventricular delay and ventricular-ventricular delay setting that maximizes LV systolic function.

  16. Left ventricular radial colour and longitudinal pulsed-wave tissue Doppler echocardiography in 39 healthy domestic pet rabbits.

    Science.gov (United States)

    Casamian-Sorrosal, Domingo; Saunders, Richard; Browne, William; Elliot, Sarah; Fonfara, Sonja

    2014-10-01

    This paper reports radial colour and longitudinal mitral annulus pulsed-wave tissue Doppler findings in a large cohort of healthy, adult pet rabbits. Thirty-nine rabbits (22 Dwarf Lops, 14 French Lops and three Alaskans) underwent conscious echocardiography. The median age of the rabbits was 22 months and the median weight was 2.8 kg (Dwarf Lop 2.4 kg/French Lop 6.0 kg). Adequate radial colour and longitudinal pulsed-wave tissue Doppler traces were obtained in 100% and 85% of cases, respectively. Most systolic tissue Doppler parameters were significantly higher in French Lops than in Dwarf Lops. Separation of mitral inflow diastolic waves was present in 40% of cases using conventional spectral Doppler and in >60% of cases using pulsed-wave tissue Doppler which could be beneficial when evaluating diastolic function in rabbits. This study can be used as a reference for normal echocardiographic tissue Doppler values for adult rabbits undergoing conscious echocardiography in clinical practice.

  17. Impacts of acute severe pulmonary regurgitation on right ventricular geometry and contractility assessed by tissue-Doppler echocardiography

    DEFF Research Database (Denmark)

    Kjaergaard, Jesper; K. Iversen, Kasper; G Vejlstrup, Niels

    2010-01-01

    model. METHODS AND RESULTS: Transthoracic echocardiography, including tissue-Doppler echocardiography for the evaluation of regional longitudinal function, was performed immediately before and after induction of severe PR by deployment of a stent in the pulmonary valve annulus of 32 farm pigs. Acute PR....... No changes in global or regional longitudinal contractility or deformation were observed despite significant changes in the cardiac chamber geometry. An increase in radial shortening may imply that the RV compensates by increasing radial contraction as an adjunct to dilatation....

  18. Effects of Mitral Balloon Valvuloplasty on Left Ventricular Systolic Functions: Assessment with Color Tissue Doppler

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    Cevat Kırma

    2010-04-01

    Full Text Available Objective: Left ventricular (LV systolic functions are generally depressed in Mitral Stenosis (MS. Recovery of LV systolic functions demonstrated with 2D echocardiography in some patients by mitral balloon valvuloplasty (MBV. Systolic mitral annular velocity (S' by Tissue Doppler Imaging (TDI predicts LV systolic function. We aimed to evaluate early effects of MBV on LV systolic function by TDI.Methods: Forty-eight consecutive patients included to the study (39 female, 36±10 years. A full transthoracic echocardiographic study (TTE including left ventricular ejection fraction assessment by teicholz method and mitral annular color TDI assessment was performed 24 hours before and after MBV in all patients. MBV performed by Inoue technique under guidance of TTE. Analysis of mitral lateral annular S' wave velocity was performed immediately after echocardiographic examination. Results: MBV performed successfully in 43 patients (Group A, and severe mitral regurgitation developed in 5 patients(Group B. Mitral valve area, and S’ wave velocity increased, mean and maximum mitral gradient, and left atrial diameter, and systolic pulmonary artery pressure (PAP were reduced significantly by MBV in group A patients (p<0.01, =0.046, <0.01, <0.01, <0.01, <0.01, respectively. But, only mitral valve area increased significantly ingroup B patients (p<0.01. LVEF by teicholz did not change significantly in both groups. Conclusion: Improvements of LV systolic functions after successfull MBV can easily showed by color TDI where2D echocardiography could not indicate.

  19. The US color Doppler in acute renal failure.

    Science.gov (United States)

    Nori, G; Granata, A; Leonardi, G; Sicurezza, E; Spata, C

    2004-12-01

    Imaging techniques, especially ultrasonography and Doppler, can give an effective assistance in the differential diagnosis of acute renal failure (ARF). An resistance Index (RI) value >0.75 is reported as optimal in attempting differential diagnosis between acute tubular necrosis (ANT) and prerenal ARF. In hepatorenal syndrome (HRS) RIs is very increased. In some renal vasculitis, as nodose panarteritis (PN), hemolytic-uremic syndrome (HUS), thrombotic thrombocytopenic purpura (TTP), parenchymal perfusion is reduced and RI increased. In lupus nephritis the RI values are correlated with creatinine level and normal RI are considered as a good prognostic tool. In acute primitive or secondary glomerulonephritis (GN), RI value is normal, with diffuse parenchymal hypervascularization. In acute crescentic and proliferative GN and tubulo-interstitial disease, color Doppler (CD) and power Doppler (PD) reveal a decreased renal parenchymal perfusion, which correlates with increased RI values. In acute thrombosis of renal artery, US color Doppler (DUS) reveals either an absence of Doppler signal or a tardus-parvus pulse distal to the vascular obstruction. In this situation it is possible to visualize hyperthropic perforating vessels that redirect their flow from the capsular plexus to the renal parenchyma. In acute thrombosis of the renal vein Doppler analysis of parenchymal vessels reveals remarkable RI values, sometimes with reversed diastolic flow. In postrenal ARF an adjunct to the differentiation between obstruction and non obstructive dilatation can be found through RIs. Diagnostic criteria of obstruction as reported by literature are: RI>0.70 in the obstructed kidney and, mostly, a difference in RI between the 2 kidneys >0.06-0.1.

  20. Color Doppler in the Assessment of Uteroplacental Circulation Insufficiency

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    Ahmad Soltani Shirazi

    2010-05-01

    Full Text Available Usage of color Doppler ultrasound in the diagnosis of uteroplacental or fetal-placental vascular insufficiency is based on the theory that many of these insufficiencies are due to small vessel disease in the uteroplacental or fetal-placental vasculature which ultimately results in fetal intrauterine growth retardation, increase in prenatal mortality and morbidity and fetal neurological development. "nIn a prospective study on patients who were sus-pected for developing uteroplacental insufficiency, color Doppler ultrasound was done and the results were compared with neonatal weight (one of the most important criteria for IUGR determination which was measured just after delivery."nDirect significant relation was showed to be present between prepartum vascular changes detected in Doppler ultrasound and prognosis of IUGR. "nThree vessel types were assessed in this study:"n1. Umbilical-middle cerebral arteries"n2. Uterine arteries"n3.Venous system (umbilical, ductus venosus, IVC, which is used to assess the compensation process in fetal circulation."nThree Doppler indices of vascular resistance were studied and their abnormalities according to the age of pregnancy were assessed.

  1. Color-flow Doppler sonography in Graves disease: "thyroid inferno".

    Science.gov (United States)

    Ralls, P W; Mayekawa, D S; Lee, K P; Colletti, P M; Radin, D R; Boswell, W D; Halls, J M

    1988-04-01

    Graves disease is a common diffuse abnormality of the thyroid gland usually characterized by thyrotoxicosis. We performed color-flow Doppler sonography in 16 patients with Graves disease and compared the results with those in 15 normal volunteers and 14 patients with other thyroid diseases (eight with multinodular goiter, four with focal masses, and two with papillary thyroid carcinoma). All 16 Graves disease patients exhibited a pulsatile pattern we call "thyroid inferno." This pattern consists of multiple small areas of intrathyroidal flow seen diffusely throughout the gland in both systole and diastole. In systole, both high-velocity flow (color coded white) and lower velocity flow (color coded red and blue) were noted. In diastole, fewer areas of flow and lower velocity flow were noted. Patients with Graves disease also exhibited color flow around the periphery of the gland. The inferno pattern did not occur in normal subjects or in patients with other thyroid diseases. On occasion, focal areas of intrathyroidal flow were detected in patients with multinodular goiter and focal thyroid masses. High-resolution gray-scale images did not show the small vascular channels from which the flow signal originated. Color-flow Doppler sonography shows promise as a cost-effective, noninvasive technique for diagnosing Graves disease.

  2. Color Doppler sonography and angioscintigraphy in hepatic Hodgkin's lymphoma

    Institute of Scientific and Technical Information of China (English)

    Mirjana V Stojkovi(c); Vera M Artiko; Irena B Radoman; Slavko J Kne(z)evi(c); Snezana M Luki(c); Mirko D Kerkez; Nebojsa S Leki(c); Andrija A Anti(c); Marinko M (Z)vela; Vitomir I Rankovi(c); Milorad N Petrovi(c); Dragana P (S)obi(c); Vladimir B Obradovi(c)

    2009-01-01

    AIM: To estimate the characteristics of Color Doppler findings and the results of hepatic radionuclide angiography (HRA) in secondary Hodgkin's hepatic lymphoma.METHODS: The research included patients with a diagnosis of Hodgkin's lymphoma with metastatic focal lesions in the liver and controls. Morphologic characteristics of focal liver lesions and hemodynamic parameters were examined by pulsed and Color Doppler in the portal, hepatic and splenic veins were examined. Hepatic perfusion index (HPI) estimated by HRA was calculated.RESULTS: In the majority of patients, hepatomegaly was observed. Lesions were mostly hypoechoic and mixed, solitary or multiple. Some of the patients presented with dilated splenic veins and hepatofugal blood flow. A pulse wave was registered in the centre and at the margins of lymphoma. The average velocity of the pulse wave was higher at the margins ( P >0.05). A continuous venous wave was found only at the margins of lymphoma. There was no linear correlation between lymphoma size and velocity of pulse and continuous wave ( r = 390, P < 0.01). HPI was significantly lower in patients with lymphomas than in controls ( P < 0.05), pointing out increased arterial perfusion in comparison to portal perfusion.CONCLUSION: Color Doppler ultrasonography is a sensitive method for the detection of neovascularization in Hodgkin's hepatic lymphoma and estimation of its intensity. Hepatic radionuclide angiography can additionally help in the assesment of vascularisation of liver lesions.

  3. Adaptive clutter rejection for ultrasound color Doppler imaging

    Science.gov (United States)

    Yoo, Yang Mo; Managuli, Ravi; Kim, Yongmin

    2005-04-01

    We have developed a new adaptive clutter rejection technique where an optimum clutter filter is dynamically selected according to the varying clutter characteristics in ultrasound color Doppler imaging. The selection criteria have been established based on the underlying clutter characteristics (i.e., the maximum instantaneous clutter velocity and the clutter power) and the properties of various candidate clutter filters (e.g., projection-initialized infinite impulse response and polynomial regression). We obtained an average improvement of 3.97 dB and 3.27 dB in flow signal-to-clutter-ratio (SCR) compared to the conventional and down-mixing methods, respectively. These preliminary results indicate that the proposed adaptive clutter rejection method could improve the sensitivity and accuracy in flow velocity estimation for ultrasound color Doppler imaging. For a 192 x 256 color Doppler image with an ensemble size of 10, the proposed method takes only 57.2 ms, which is less than the acquisition time. Thus, the proposed method could be implemented in modern ultrasound systems, while providing improved clutter rejection and more accurate velocity estimation in real time.

  4. Sevoflurane Used for Color Doppler Ultrasound Examination in Children.

    Science.gov (United States)

    Fan, Conghai; Zhang, Fengchao; Huang, Xiaomei; Wen, Cheng; Shan, Chengjing

    2015-05-01

    The objective of this study is to investigate the feasibility of sevoflurane inhalation in pediatric color doppler ultrasound examination. In this study, 30 cases of children under 1 year were selected. They were all I or II levels according to American Society of Anesthesiology. Children with severe cyanotic congenital heart disease or severe pneumonia were excluded. All the children received anesthesia with sevoflurane. The University of Michigan Sedation Scale was assessed and bispectral index (BIS) was recorded before induction (T0), after induction (T1), when maintaining (T2), and when waking-up (T3). Blood pressure and heart rate were monitored during the color doppler ultrasound examination, the time to receive sedation examination and anesthesia recovery time were also recorded. (1) Score for UMSS was zero at T0 and 3 at T1; (2) BIS value was 93.18 ± 2.94 at T0 and decreased to 87.6 ± 3.9 at T1; (3) Blood pressure or heart rate did not decline obviously; (4) The time to receive sedation examination was 46.4 ± 13.1 s and anesthesia recovery time was 7.8 ± 5.3 min. In conclusion, sevoflurane can be used in pediatric color doppler ultrasound examination safely and effectively.

  5. Rats with high left ventricular end-diastolic pressure can be identified by Doppler echocardiography one week after myocardial infarction

    OpenAIRE

    R.M. Saraiva; Kanashiro-Takeuchi,R.M.; E.L. Antonio; Campos, O; P.J.F. Tucci; Moisés,V.A.

    2007-01-01

    The severity of left ventricular (LV) dysfunction in rats with myocardial infarction (MI) varies widely. Because homogeneity in baseline parameters is essential for experimental investigations, a study was conducted to establish whether Doppler echocardiography (DE) could accurately identify animals with high LV end-diastolic pressure as a marker of LV dysfunction soon after MI. Direct measurements of LV end-diastolic pressure were made and DE was performed simultaneously 1 week after surgica...

  6. Associations between abnormal ultrasound color Doppler measures and tendon pain symptoms in badminton players during a season

    DEFF Research Database (Denmark)

    Boesen, Anders Ploug; Boesen, Morten Ilum; Torp-Pedersen, Soren

    2012-01-01

    Color Doppler ultrasound is widely used to examine intratendinous flow in individuals with overuse tendon problems, but the association between color Doppler and pain is still unclear.......Color Doppler ultrasound is widely used to examine intratendinous flow in individuals with overuse tendon problems, but the association between color Doppler and pain is still unclear....

  7. Cardiac output by Doppler echocardiography in the premature baboon: comparison with radiolabeled microspheres.

    Science.gov (United States)

    Kinsella, J P; Morrow, W R; Gerstmann, D R; Taylor, A F; deLemos, R A

    1991-04-01

    Pulsed-Doppler echocardiography (PDE) is a useful noninvasive method for determining left ventricular output (LVO). However, despite increasingly widespread use in neonatal intensive care units, validation studies in prematures with cardiopulmonary disease are lacking. The purpose of this study was to compare radiolabeled microsphere (RLM) and PDE measurements of LVO, using the critically ill premature baboon as a model of the human neonate. Twenty-two paired RLM and PDE measurements of LVO were obtained in 14 animals between 3 and 24 h of age. Average PDE LVO was 152 ml/min/kg (range, 40-258 ml/min/kg) compared to 158 ml/min/kg (range, 67-278 ml/min/kg) measured by RLM. Linear regression analysis of the paired measurements showed good correlation with a slope near unity (gamma = 0.94x + 4.20, r = 0.91, SEE = 25.7 ml). We conclude that PDE determinations of LVO compare well with those measured by RLM in the premature baboon. PDE appears to provide a valid estimate of LVO and should be useful in human prematures with cardiopulmonary distress.

  8. High Frequency Color Doppler Image of Choroidal Detachment

    Institute of Scientific and Technical Information of China (English)

    Jinghong Wu; Lijuan Zou; Zhongyao Wu; Lixun Cheng

    2000-01-01

    Purpose: To study the Color Doppler Image (CDI) characteristics of choroidal detachment and the applied value of CDI.Methods: Seventy-two cases (74 eyes) of choroidal detachment were studied retrospectively.Results: The typical ultragraph of chroridal detachment displayed one or several smooth hemispherical or lobuler circular thick bands, with convex side toward vitreous cavity. Most of the choroidal detachments were located before the equator, a few of them were beyond the equator. CDI displayed blood flow singnal in the band. Pulse Doppler showed the frequency spectrum features of retinal detachment band were similar to those of central retinal vessels, whereas the frequency spectum features of choroidal detachment bend resembled those of ciliary artery in some cases of retinal detachment (RD) accompanied by choroidal detachment.Conclusion: CDI could make a correct and precise diagnosis of choroidal detachment.Eye Science 2000; 16. 61 ~ 64.

  9. Can transthoracic Doppler echocardiography be used to detect coronary slow flow phenomenon?

    Institute of Scientific and Technical Information of China (English)

    NIE Shao-ping; LUO Tai-yang; DONG Jian-zeng; LIU Xiao-hui; MA Chang-sheng; GENG Li-li; WANG Xiao; ZHANG Xiao-shan; YANG Ya; LIU Bai-qiu; LI Jun; QIAO Yan; LIU Xin-min

    2010-01-01

    Background Coronary slow flow phenomenon (CSFP) is an important, angiographic clinical entity but is lacking non-invasive detecting techniques. This study aimed to elucidate the value of transthoracic Doppler echocardiography (TTDE) in the diagnosis and monitoring of coronary slow flow in left anterior descending (LAD) coronary artery.Methods We consecutively enrolled 27 patients with CSFP in LAD detected by coronary arteriography from August 2009 to April 2010. Thirty-eight patients with angiographically normal coronary flow served as control. Corrected thrombolysis in myocardial infarction (TIMI) frame count (CTFC) was used to document coronary flow velocities. All subjects underwent TTDE within 24 hours after coronary angiography. LAD flow was detected and the coronary diastolic peak velocities (DPV) and diastolic mean velocities (DMV) were calculated.Results Sixty of 65 (92.3%) subjects successfully underwent TTDE. Baseline clinical characteristics were similar between the two groups. Coronary DPV and DMV of LAD were significantly lower in the CSFP group than in the control group ((0.228±0.029) m/s vs. (0.302±0.065) m/s, P=0.000; (0.176±0.028) m/s vs. (0.226±0.052) m/s, P=0.000,respectively). There was a high inverse correlation between CTFC and coronary DPV and DMV (r=-0.727, P=0.000;r=-0.671, P=0.000, respectively). Receiver operating characteristic (ROC) curve showed that the area under the curve (AUC) was less than one half for coronary DPV (AUC=0.104) and DMV (AUC=0.204), respectively.Conclusions In patients with CSFP, there is a high inverse correlation between CTFC and coronary diastolic flow velocities in the LAD coronary artery, as measured by TTDE. The value of TTDE in the monitoring and evaluation of coronary flow in patients with CSFP deserves further investigation.

  10. Color doppler energy (CDE) : initial ten-months experience

    Energy Technology Data Exchange (ETDEWEB)

    Ro, Young Jin; Son, Hyun Ju; Lee, Suck Hong; Kim, Byung Soo [Pusan National Univ. College of Medicine, Pusan (Korea, Republic of); Han, Kook Sang; Nam, SAng Hwa; Lee, Keum Seob [Haedong Hospital, Pusan (Korea, Republic of); Shin Se Kwon [Daedong Hospital, Pusan (Korea, Republic of)

    1996-06-01

    Color Doppler imaging(CDI) has shortcomings, including random noise, aliasing, and angle dependence. To overcome these, a method using CD US, termed power doppler or Color Doppler Energy(CDE), has recently been introduced. The purpose of this study was to show the clinical usefulness of CDE. We retrospectively analyzed the CDI and CDE of 61 cases(20 renal pseudotumors, 8 musculoskeletal inflammations, 17 epididymitis or epididymo-orchitis, 3 varicoceles, 1 normal testis, 1 hepatocellualr carcinoma, 7 renal cell carcinoma, 1 renal angiomyolipoma, and 3 splenic varices). CDI and CDE scans were obtained at the same region with constant scan plane. The color gain was increased until noise first became perceptible, and scans were always obtained in such a way that the maximum amount of vascularity was shown. Thereafter, the vascularity, vascular displacement, and the vascular relationship between CDI and CDE were compared. In 17 of 20 cases of pseudotumor in the kidney, normal vascularity was identified in CDI and CDE, but was more cleary visible in CDE. In three cases, there was no visible vascularity in CDI, but normal vascularity in CDE. In eight cases of musculoskeletal inflammation and 17 cases of epididymitis with or without orchitis, the vascularity was increased due to hyperemia, which was more prominently seen in CDE than in CDI. In three varicoceles, CDE appeared to be better in demonstrating low velocity flow. In one patient who was suspected of having acute testicular torsion, CDE was helpful in excluding this suspicion. In one case of hepatocellualr carcinoma, seven cases of renal cell carcinoma, one case of renal angiomyolipoma, and three cases of splenic varices, CDE was better than CDI in showing the vascularity, vascular relationship, and vascular displacement.

  11. Ultrasonography and color Doppler in juvenile idiopathic arthritis

    DEFF Research Database (Denmark)

    Laurell, Louise; Court-Payen, Michel; Nielsen, Susan

    2011-01-01

    hypertrophy, effusion) and by color Doppler (synovial hyperemia) before and 4 weeks after US-guided steroid injection. Results US detected 121 compartments with active disease (joints, tendon sheaths and 1 ganglion cyst). Multiple compartments were involved in 80% of the ankle regions. The talo-crural joint...... inflammation in the ankle region of JIA patients. The talo-crural joint was not always involved. Disease was frequently found in compartments difficult to evaluate clinically. US enabled exact guidance of steroid injections, gave a low rate of subcutaneous atrophy and was proved valuable for follow...

  12. [Color Doppler ultrasound of the scalp and hair].

    Science.gov (United States)

    Wortsman, X; Roustan, G; Martorell, A

    2015-11-01

    Color Doppler ultrasound is an imaging technique that allows the study of frequent diseases of the scalp and hair. This examination provides anatomical and functional information in real time that can reveal the extent, activity or severity of common diseases in a non-invasive way, and allows monitoring of their treatment. Copyright © 2015 Academia Española de Dermatología y Venereología. Published by Elsevier España, S.L.U. All rights reserved.

  13. Validation of the severity index by cardiac catheterization and Doppler echocardiography in patients with aortic sclerosis and stenosis

    Directory of Open Access Journals (Sweden)

    Rosales Joseph

    2006-03-01

    Full Text Available Abstract The severity index is a new echocardiographic measure that is thought to be an accurate indicator of aortic leaflet pathology in patients with AS. However, it has not been validated against cardiac catheterization or Doppler echocardiographic measures of AS severity nor has it been applied to patients with aortic sclerosis. The purposes of this study were to compare the severity index to invasive hemodynamics and Doppler echocardiography across the spectrum of calcific aortic valve disease, including aortic sclerosis and AS. 48 patients with aortic sclerosis and AS undergoing echocardiography and cardiac catheterization comprised the study population. The aortic valve leaflets were assessed for mobility (scale 1 to 6 and calcification (scale 1 to 4 and the severity index was calculated as the sum of the mobility and calcification scores according to the methods of Bahler et al. The severity index increased with increasing severity of aortic valve disease; the severity indices for patients with aortic sclerosis, mild to moderate AS and severe AS were 3.38 ± 1.06, 6.45 ± 2.16 and 8.38 ± 1.41, respectively. The aortic jet velocity by echocardiography and the square root of the maximum aortic valve gradient by cardiac catheterization correlated well with the severity index (r = 0.84, p

  14. Relevance of tissue Doppler in the quantification of stress echocardiography for the detection of myocardial ischemia in clinical practice

    Directory of Open Access Journals (Sweden)

    Sicari Rosa

    2005-01-01

    Full Text Available Abstract In the present article we review the main published data on the application of Tissue Doppler Imaging (TDI to stress echocardiography for the detection of myocardial ischemia. TDI has been applied to stress echocardiography in order to overcome the limitations of visual analysis for myocardial ischemia. The introduction of a new technology for clinical routine use should pass through the different phases of scientific assessment from feasibility studies to large multicenter studies, from efficacy to effectiveness studies. Nonetheless the pro-technology bias plays a major role in medicine and expensive and sophisticated techniques are accepted before their real usefulness and incremental value to the available ones is assessed. Apparently, TDI is not exempted by this approach : its applications are not substantiated by strong and sound results. Nonetheless, conventional stress echocardiography for myocardial ischemia detection is heavily criticized on the basis of its subjectivity. Stress echocardiography has a long lasting history and the evidence collected over 20 years positioned it as an established tool for the detection and prognostication of coronary artery disease. The quantitative assessment of myocardial ischemia remains a scientific challenge and a clinical goal but time has not come for these newer ultrasonographic techniques which should be restricted to research laboratories.

  15. Effect of color coding and subtraction on the accuracy of contrast echocardiography

    Science.gov (United States)

    Pasquet, A.; Greenberg, N.; Brunken, R.; Thomas, J. D.; Marwick, T. H.

    1999-01-01

    BACKGROUND: Contrast echocardiography may be used to assess myocardial perfusion. However, gray scale assessment of myocardial contrast echocardiography (MCE) is difficult because of variations in regional backscatter intensity, difficulties in distinguishing varying shades of gray, and artifacts or attenuation. We sought to determine whether the assessment of rest myocardial perfusion by MCE could be improved with subtraction and color coding. METHODS AND RESULTS: MCE was performed in 31 patients with previous myocardial infarction with a 2nd generation agent (NC100100, Nycomed AS), using harmonic triggered or continuous imaging and gain settings were kept constant throughout the study. Digitized images were post processed by subtraction of baseline from contrast data and colorized to reflect the intensity of myocardial contrast. Gray scale MCE alone, MCE images combined with baseline and subtracted colorized images were scored independently using a 16 segment model. The presence and severity of myocardial contrast abnormalities were compared with perfusion defined by rest MIBI-SPECT. Segments that were not visualized by continuous (17%) or triggered imaging (14%) after color processing were excluded from further analysis. The specificity of gray scale MCE alone (56%) or MCE combined with baseline 2D (47%) was significantly enhanced by subtraction and color coding (76%, pcolorized images (59%) was also significantly greater than gray scale MCE (43% and 29%, pcolor coding significantly improves the accuracy and specificity of MCE for detection of perfusion defects.

  16. Dynamic color Doppler sonography in the assessment of erectile dysfunctions; Utilizzazione dell'eco color Doppler dinamico del pene nello studio delle disfunzioni erettili

    Energy Technology Data Exchange (ETDEWEB)

    Aversa, A.; Bonifacio, V.; Isidori, A.; Fabbri, A. [Rome Univ. (Italy). Cattedra di Andrologia. Dipt. di Fisiopatologia Medica; Bertucci, B. [Azienda Ospedaliera Pugliese Ciaccio, Catanzaro (Italy). Servizio di Radiologia

    1999-06-01

    The authors investigated the diagnostic accuracy of dynamic color Doppler sonography (D-CDS) in men with erectile dysfunctions (ED). Terminal microcirculation alterations and their correlation with erectile response after drug testing were investigated with power Doppler energy. Penile sonography in the flaccid state can show calcificic plaques and/or fibrosis of the corpora. Redosing of PGE{sub 1} plus phentolamine during D-CDS is a safe procedure and improves diagnostic accuracy in erectile dysfunctions, with significantly fewer non-responders than redosing of PGE{sub 1} alone. Power Doppler energy shows altered morphology of helicine arterioles otherwise missed at color Doppler and is thus recommended to make an accurate diagnosis in some men with erectile dysfunctions. [Italian] Scopo dello studio e' quello di valutare l'accuratezza diagnostica dell'eco color Doppler dinamico del pene nei soggetti affetti da disfunzione erettile. Inoltre si e' voluto verificale la presenza di alterazioni della vascolarizzazione arteriosa terminale con modulo power Doppler e come la presenza di queste alterazioni del microcircolo si correlino con la risposta erettiva della farmacoinfusione intracavernosa. Con l'eco color Doppler penieno basale e' possibile identificare placche calcifiche e/o fibrosi nei corpi cavernosi. Durante la fase dinamica con color Doppler , la re-iniezione con PGE{sub 1} e fentolamina si e' dimostrata sicura e ha migliorato l'accuratezza diagnostica riducendo il numero di soggetti con mancata risposta erettiva rispetto alla sola PGE{sub 1}. Con power Doppler sono state identificate alterazioni morfologiche delle arterioleelicine non visibili con il color Doppler consentendo la diagnosi piu' precisain alcuni casi di disfunzione erettile.

  17. Noninvasive monitoring of myocardial function after surgical and cytostatic therapy in a peritoneal metastasis rat model: assessment with tissue Doppler and non-Doppler 2D strain echocardiography

    Directory of Open Access Journals (Sweden)

    Wernecke Klaus-Dieter

    2007-07-01

    Full Text Available Abstract Objective We sought to evaluate the impact of different antineoplastic treatment methods on systolic and diastolic myocardial function, and the feasibility estimation of regional deformation parameters with non-Doppler 2D echocardiography in rats. Background The optimal method for quantitative assessment of global and regional ventricular function in rats and the impact of complex oncological multimodal therapy on left- and right-ventricular function in rats remains unclear. Methods 90 rats after subperitoneal implantation of syngenetic colonic carcinoma cells underwent different onclogical treatment methods and were diveded into one control group and five treatment groups (with 15 rats in each group: group 1 = control group (without operation and without medication, group 2 = operation group without additional therapy, group 3 = combination of operation and photodynamic therapy, group 4 = operation in combination with hyperthermic intraoperative peritoneal chemotherapy with mitomycine, and group 5 = operation in combination with hyperthermic intraoperative peritoneal chemotherapy with gemcitabine, group 6 = operation in combination with taurolidin i.p. instillation. Echocardiographic examination with estimation of wall thickness, diameters, left ventricular fractional shortening, ejection fraction, early and late diastolic transmitral and myocardial velocities, radial and circumferential strain were performed 3–4 days after therapy. Results There was an increase of LVEDD and LVESD in all groups after the follow-up period (P = 0.0037. Other LV dimensions, FS and EF as well as diastolic mitral filling parameters measured by echocardiography were not significantly affected by the different treatments. Values for right ventricular dimensions and function remained unchanged, whereas circumferential 2D strain of the inferior wall was slightly, but significantly reduced under the treatment (-18.1 ± 2.5 before and -16.2 ± 2.9 % after

  18. Color Doppler ultrasound of the hand: observations on clinical utility in rheumatoid arthritis.

    Science.gov (United States)

    Saadeh, Constantine; Gaylor, Patrick; Lee, Doohi; Malacara, Jan; Gaylor, Michael

    2004-02-01

    The use of ultrasound with color Doppler in the evaluation of rheumatoid arthritis was followed in 25 patients with joint complaints. Small joint ultrasound of the metacarpophalangeal joints (MCPs) as well as the wrists was performed with supplementation by color Doppler. In addition, 6 patients were followed for at least 3 months after start of treatment of rheumatoid arthritis using the same technique. In patients with what appeared to be definite rheumatoid arthritis, ultrasound supported this diagnosis as evidenced by the finding of cortical defects, extensor tendon sheath thickening, and synovial proliferation. Increased activity by color Doppler ultrasonography was the most common finding. Significant decrease in color Doppler activity was noted in the 6 patients who were followed up after 3 months of therapy with disease-modifying agents. Therefore, the use of ultrasound with color Doppler could aid in the diagnosis and follow up of patients with rheumatoid arthritis.

  19. Serial changes of left ventricular filling flow pattern on doppler echocardiography concerning perfusion recovery and restenosis after successful coronary angioplasty

    Energy Technology Data Exchange (ETDEWEB)

    Han, Xirui; Yonekura, Shuji; Nakata, Tomoaki; Tsuchihashi, Kazufumi; Shimamoto, Kazuaki [Sapporo Medical Univ. (Japan)

    1997-10-01

    We tested whether diastolic indices on pulse Doppler echocardiography, i.e., the peak early diastolic filling velocity (E, cm/sec), the acceleration slope of E (AC, cm/sec{sup 2}), and the ratio of peak diastolic filling to peak atrial filling velocity (E/A) might be changed early after PTCA in relation with perfusion recovery on thallium scintigraphy. Additionally, the clinical usefulness of these indices for the detection of restenosis after PTCA was also examined in 35 patients, including 12 patients with old Q wave myocardial infarction (OMI), on whom PTCA had been successfully performed. Perfusion abnormalities on stress {sup 201}Tl scintigraphy was quantitatively evaluated by severity score (SS) and extent score (ES). In patients with angina pectoris, early recoveries of values on E, AC, and E/A were observed, but not in patients with 0MI. The percent changes of these indices had significant correlations with changes of SS in scintigraphy. In the chronic period, recovery of values E, AC, and E/A were also seen in OMI without restenosis, but not in those with restenosis. Percent E and %A{<=}105 could predict restenosis by sensitivity 100% and specificity 94.4% in all subjects. These results reveal that a follow-up of the indices on pulse Doppler echocardiography has clinical usefulness in the detection not only of functional recovery of left ventricular diastolic function, but also of restenosis after successful PTCA. (K.H.)

  20. FEASIBILITY STUDY OF AN ULTRASOUND CONTRAST AGENT (LEVOVIST) IN COLOR DOPPLER IMAGING OF LIVER NEOPLASMS

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    @@ The purpose of this study was to determine the efficacy of using an ultrasound contrast agent(levovist)to enhance the color Doppler imaging of liver neoplasms.Thirty patients with hepatic tumors were enrolled in this study.After intravenous administration of levovist,the color Doppler signals of normal hepatic vessels were enhanced.In various hepatic tumors,the different patterns of tumor vascularity were observed,which had not been demonstrated in conventional non-contrast color Doppler imaging.In 11 of 16 patients with hepatocarcinoma,additoal color Doppler signals were observed in the central part of the tumors.On the contrary,3 patients with metastatic liver lesions the enhanced color Doppler signal appear only at the peripheral of tumors.A typical rim-like color enhancement was seen in 2 of the 3 cases.In six patients with hpatic hemangiomas contrast-enhanced color Doppler imaging demonstrated the blood vessels at the margin of the neoplasms.Contrast-enhanced color Doppler imaging improves the visualization of the hepatic neoplasm vascularity.This technique holds great promise for detecting small liver tumors and differentiating hepatic neoplasms.

  1. Limitations of Doppler echocardiography for the post-operative evaluation of aortic coarctation

    NARCIS (Netherlands)

    De Mey, S; Segers, P; Coomans, [No Value; Verhaaren, H; Verdonck, P

    2001-01-01

    Doppler blood Row measurements and derived pressure differences. through the Bernoulli equation. are used in the diagnosis of aortic coarctation, a congenital stenosis distal to the Left subclavian artery. Doppler velocities remain elevated at the coarctation site after successful repair of coarctat

  2. Tissue Doppler echocardiography and biventricular pacing in heart failure: Patient selection, procedural guidance, follow-up, quantification of success

    Directory of Open Access Journals (Sweden)

    Baumann Gert

    2004-09-01

    Full Text Available Abstract Asynchronous myocardial contraction in heart failure is associated with poor prognosis. Resynchronization can be achieved by biventricular pacing (BVP, which leads to clinical improvement and reverse remodeling. However, there is a substantial subset of patients with wide QRS complexes in the electrocardiogram that does not improve despite BVP. QRS width does not predict benefit of BVP and only correlates weakly with echocardiographically determined myocardial asynchrony. Determination of asynchrony by Tissue Doppler echocardiography seems to be the best predictor for improvement after BVP, although no consensus on the optimal method to assess asynchrony has been achieved yet. Our own preliminary results show the usefulness of Tissue Doppler Imaging and Tissue Synchronization Imaging to document acute and sustained improvement after BVP. To date, all studies evaluating Tissue Doppler in BVP were performed retrospectively and no prospective studies with patient selection for BVP according to echocardiographic criteria of asynchrony were published yet. We believe that these new echocardiographic tools will help to prospectively select patients for BVP, help to guide implantation and to optimize device programming.

  3. Inverse Problem for Color Doppler Ultrasound-Assisted Intracardiac Blood Flow Imaging

    Directory of Open Access Journals (Sweden)

    Jaeseong Jang

    2016-01-01

    Full Text Available For the assessment of the left ventricle (LV, echocardiography has been widely used to visualize and quantify geometrical variations of LV. However, echocardiographic image itself is not sufficient to describe a swirling pattern which is a characteristic blood flow pattern inside LV without any treatment on the image. We propose a mathematical framework based on an inverse problem for three-dimensional (3D LV blood flow reconstruction. The reconstruction model combines the incompressible Navier-Stokes equations with one-direction velocity component of the synthetic flow data (or color Doppler data from the forward simulation (or measurement. Moreover, time-varying LV boundaries are extracted from the intensity data to determine boundary conditions of the reconstruction model. Forward simulations of intracardiac blood flow are performed using a fluid-structure interaction model in order to obtain synthetic flow data. The proposed model significantly reduces the local and global errors of the reconstructed flow fields. We demonstrate the feasibility and potential usefulness of the proposed reconstruction model in predicting dynamic swirling patterns inside the LV over a cardiac cycle.

  4. Tissue Doppler echocardiography in persons with hypertension, diabetes, or ischaemic heart disease: the Copenhagen City Heart Study

    DEFF Research Database (Denmark)

    Mogelvang, Rasmus; Sogaard, Peter; Pedersen, Sune A

    2009-01-01

    AIMS: To test the hypothesis that echocardiographic tissue Doppler imaging (TDI) reveals reduced myocardial function in hypertension, diabetes, and ischaemic heart disease (IHD) in the general population. METHODS AND RESULTS: Within a large, community-based population study, cardiac function...... and diastolic cardiac function in hypertension [n = 345; LD 10.1 (+/-standard deviation, SD 2.0 mm), P diabetes [n = 65; LD 9.8 (+/-SD 2.2 mm), P ....001] compared with controls [n = 533; LD 11.4 (+/-SD 2.0 mm); E/e' 9.0 (x/SD 1.3)]. This pattern remained significant after adjusting for age, sex, body mass index, heart rate, and the results of conventional echocardiography. CONCLUSION: In the general population, persons with hypertension, diabetes, or IHD...

  5. Assessment of left ventricular functions with tissue Doppler, strain, and strain rate echocardiography in patients with familial Mediterranean fever.

    Science.gov (United States)

    Ceylan, Özben; Özgür, Senem; Örün, Utku Arman; Doğan, Vehbi; Yılmaz, Osman; Keskin, Mahmut; Arı, Mehmet Emre; Erdoğan, Özlem; Karademir, Selmin

    2015-08-01

    This study assessed the early changes in regional and global systolic and diastolic myocardial functions in patients with familial Mediterranean fever without any cardiovascular symptoms using tissue Doppler and strain and strain rate echocardiography and compared them to the results of a control group. This study has a cross-sectional and observational design. FMF patients with normal left ventricular function were included in the study. We excluded patients who had arrhythmia, acquired/congenital heart disease, pericarditis, or acute attack. We compared 45 children with familial Mediterranean fever on colchicine therapy and 45 age- and sex-matched healthy children. The 45 patients with familial Mediterranean fever included 24 (55.3%) girls and 21 (46.7%) boys with a mean age of 11.3 ± 3.7 (range 2-18) years. The mean disease duration was 4.6 ± 2.4 (range 0.5-10) years. In the patient group, the homozygous M694V mutation was the most common (64.4%) mutation. The patients with familial Mediterranean fever had statistically lower longitudinal global strain, radial global strain, and strain rates (-14.44 ± 4.77%, 14.80 ± 6.29%, and 0.59 ± 0.24 s, respectively) than the controls (-17.40 ± 1.79%, 17.53 ± 4.63%, and 0.83 ± 0.51 s) (p familial Mediterranean fever who are subclinical from a cardiac aspect might have normal left ventricular function as measured by conventional echocardiography. However, the disease affects their myocardial tissue, and these patients should be followed with conventional, strain, and strain rate echocardiography techniques regularly.

  6. [Graves' disease: ultrasonographic, color Doppler and histological aspects].

    Science.gov (United States)

    Messina, G; Viceconti, N; Trinti, B

    1997-11-01

    The aim of the present work was to study the relationship between thyroid low echogenicity, the thyroid blood flow by color-Doppler (CD) and histological features in patients with Graves' disease (GD). Thyroid ultrasonography and CD was performed on 28 patients with GD. In 5 patients has been compared CD with histology. The thyroid volume was higher in 100% of patients with GD at the onset rather than in euthyroidism. Diffuse hypoechogenicity of the thyroid was discovered in 100% of patients with GD at the onset and it persisted in 57.1% of patients that became euthyroid after therapy. Qualitative CD resulted in different patterns that were classified as follow: pattern A ("thyroid inferno") in 17 patients (60.7%); pattern B (mildly increased of parenchymal blood flow) in 11 patients (39.3%). In the 5 histological proven cases, in the pattern A (3 cases) there was a diffuse microfollicular hyperplasia with functional activation notes. There was lymphocytic infiltration. While in the pattern B (two cases) there were a non-follicular hypercellular nodule with pseudocapsule and rare colloid. We conclude that there are two different histological types with different CD patterns in GD.

  7. Color doppler US findings of gestational trophoblastic disease

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jae Hee; Lee, Myung Hee; Kim, Jee Young; Jung, Jae Keun; Shin, Kyung Sub [Catholic University College of Medicine, Seoul (Korea, Republic of)

    1994-12-15

    The purpose of this study were to evaluate the findings of gestational trophoblastic disease(GTD) at color Doppler imaging (CDI) and to assess the role of CDI in differentiating gestational trophoblastic tumor (GTT) from hydatidiform mole (H-mole). CDI findings of 18 patients with H-mole and 52 patients with GTT were reviewed. Masswas detected in 43(82,7%) patients with GTT. Thirty seven out of 43 masses showed varying degree of intratumoral flows. mean resistive index (RI) of intratumoral flow was 0.39+0.15. H-mole manifestated as a characteristic vesicular mass in 6 patients without history of curretage, while there was no definable mass in 12 patients with history of curretage. The masses of H-mole did not show intratumoral flow. Hypervascularity of adnexae was detected in 44 (84.6%) patients with GTT, whereas only six (33.3%) patients with H-mole showed minimalhypervascularity of adnexae. Mean RI of uterine arteries was 0.69+0.13 in GTT and 0.70+0.15 in H-mole. CDI findings of mass in the uterus, hypervascularity of adnexal region and intramural vessels in patients suspected to have GTD clinically, may suggest GTT. In conclusion, CDI was helpful in the diagnosis of GTD and the differentiation between H-mole and GTT

  8. Using rotation for steerable needle detection in 3D color-Doppler ultrasound images.

    Science.gov (United States)

    Mignon, Paul; Poignet, Philippe; Troccaz, Jocelyne

    2015-08-01

    This paper demonstrates a new way to detect needles in 3D color-Doppler volumes of biological tissues. It uses rotation to generate vibrations of a needle using an existing robotic brachytherapy system. The results of our detection for color-Doppler and B-Mode ultrasound are compared to a needle location reference given by robot odometry and robot ultrasound calibration. Average errors between detection and reference are 5.8 mm on needle tip for B-Mode images and 2.17 mm for color-Doppler images. These results show that color-Doppler imaging leads to more robust needle detection in noisy environment with poor needle visibility or when needle interacts with other objects.

  9. Testicular relapse of acute lymphocytic leukemia: Usefulness of color and power Doppler sonography

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kwang Hun; Yoon, Choon Sik; Lee, Sung Il; Kim, Myung Joon [Yonsei University College of Medicine, Seoul (Korea, Republic of); Yang, Chang Hyun [Yang Dong Hospital, Yonsei University College of Medicine, Seoul (Korea, Republic of)

    1999-09-15

    To evaluate the usefulness of color and power Doppler sonography in detecting testicular relapse of leukemia. Both gray- scale and color (power) Doppler ultrasound (US) were performed in seven patients. Two additional patients examined by gray-scale US only were included. The patients were 4-14 years old (mean age, 9 years). Ten tests were confirmed to have leukemic relapse, eight by pathology and two by clinical evidence. Gray-scale US showed variable findings: heterogeneous hypoechogenicity (5) and homogeneous isoechogenicity (5). In all seven patients (8 tests) who underwent both color and power Doppler US, diffuse and marked hypervascularity was demonstrated. One case showed enlarged epididymis with heterogeneous echogenicity, which was the same character as the involved testis. Color and power Doppler US are useful methods in the identification of the testicular relapse of leukemia by demonstrating diffuse, marked hypervascularity in the proper clinical settings.

  10. Experimental verification of color flow imaging based on wideband Doppler method.

    Science.gov (United States)

    Tanaka, Naohiko

    2014-01-01

    The purpose of this study is to eliminate the aliasing in color flow imaging. The wideband Doppler method is applied to generate a color flow image, and the validity of the method is experimentally confirmed. The single beam experiment is carried out to confirm the velocity estimation based on the wideband Doppler method. The echo data for the conventional pulsed Doppler method and the wideband Doppler method are obtained using a flow model, and the estimated velocity for each method is compared. The color flow images for each method are also generated using several types of flow model. The generated images are compared, and the characteristics of the imaging based on the wideband Doppler method are discussed. The high velocity beyond the Nyquist limit is successfully estimated by the wideband Doppler method, and the availability in low velocity estimation is also confirmed. The aliasing in color flow images is eliminated, and the generated images show the significance of the elimination of the aliasing in the flow imaging. The aliasing in color flow imaging can be eliminated by the wideband Doppler method. This technique is useful for the exact understanding of blood flow dynamics.

  11. Angiographically borderline left main coronary artery lesions: correlation of transthoracic doppler echocardiography and intravascular ultrasound: a pilot study

    Directory of Open Access Journals (Sweden)

    Varga Albert

    2011-06-01

    Full Text Available Abstract Background the clinical decision making could be difficult in patients with borderline lesions (visually assessed stenosis severity of 30 to 50% of the left main coronary artery (LM. The aim of the study was to evaluate the relationship between transthoracic Doppler (TTDE peak diastolic flow velocity (PDV and intravascular ultrasound (IVUS measurements in the assessment of angiographically borderline LM lesions. Methods 27 patients (mean age 64 ± 8 years, 21 males with borderline LM stenosis referred for IVUS examination were included in the study. We performed standard IVUS with minimal lumen area (MLA and plaque burden (PB measurement and routine quantitative coronary angiography (QCA with diameter stenosis (%DS and area stenosis (%AS assessment in all. During TTDE, resting PDV was measured in the LM. Results interpretable Doppler signal could be obtained in 24 patients (88% feasibility; therefore these patients entered the final analysis. MLA was 7.1 ± 2.7 mm2. TTDE measured PDV correlated significantly with IVUS-derived MLA (r = -0.46, p 2 LM stenosis. Conclusion In angiographically borderline LM disease, resting PDV from transthoracic echocardiography is increased in presence of increased plaque burden by IVUS. TTDE evaluation might be a useful adjunct to other invasive and non-invasive methods in the assessment of borderline LM lesions. Further, large scale studies are needed to establish the exact cut-off value of PDV for routine clinical application.

  12. Predicting Paroxysmal Atrial Fibrillation in Cerebrovascular Ischemia Using Tissue Doppler Imaging and Speckle Tracking Echocardiography

    DEFF Research Database (Denmark)

    Olsen, Flemming Javier; Jørgensen, Peter Godsk; Møgelvang, Rasmus

    2016-01-01

    , tissue Doppler imaging (TDI), and speckle tracking. TDI was performed to acquire myocardial peak velocities during systole/ventricular contraction (global s'), early diastole/ventricular filling (global e'), and late diastole/atrial contraction (global a'). Speckle tracking was performed for myocardial...

  13. Use of ultrasound, color Doppler imaging and radiography to monitor periapical healing after endodontic surgery.

    Science.gov (United States)

    Tikku, Aseem P; Kumar, Sunil; Loomba, Kapil; Chandra, Anil; Verma, Promila; Aggarwal, Renu

    2010-09-01

    This study evaluated the effectiveness of ultrasound, color Doppler imaging and conventional radiography in monitoring the post-surgical healing of periapical lesions of endodontic origin. Fifteen patients who underwent periapical surgery for endodontic pathology were randomly selected. In all patients, periapical lesions were evaluated preoperatively using ultrasound, color Doppler imaging and conventional radiography, to analyze characteristics such as size, shape and dimensions. On radiographic evaluation, dimensions were measured in the superoinferior and mesiodistal direction using image-analysis software. Ultrasound evaluation was used to measure the changes in shape and dimensions on the anteroposterior, superoinferior, and mesiodistal planes. Color Doppler imaging was used to detect the blood-flow velocity. Postoperative healing was monitored in all patients at 1 week and 6 months by using ultrasound and color Doppler imaging, together with conventional radiography. The findings were then analyzed to evaluate the effectiveness of the 3 imaging techniques. At 6 months, ultrasound and color Doppler imaging were significantly better than conventional radiography in detecting changes in the healing of hard tissue at the surgical site (P < 0.004). This study demonstrates that ultrasound and color Doppler imaging have the potential to supplement conventional radiography in monitoring the post-surgical healing of periapical lesions of endodontic origin.

  14. Significance of color doppler ultrasonography in the assessment of pancreatic carcinoma vascular invasion

    Directory of Open Access Journals (Sweden)

    Alempijević Tamara

    2006-01-01

    Full Text Available Background/Aim. It is highly appreciated to provide exact data on vascular invasion of pancreatic carcinoma relying as much as possible on non-invasive diagnostic procedures. Color Doppler ultrasonography has been proven as an efficient method for clinical staging of pancreatic carcinoma essential for therapeutic decisions. The aim of this study was to provide an analysis of the sensitivity and specificity for color Doppler ultrasonography in patients suffering from pancreatic carcinoma. Methods. We performed color Doppler ultrasonography examination in 43 patients with pancreatic carcinoma prior to the surgery. The findings of ultrasonography on neoplasm vascular invasion were correlated to the findings obtained during the subsequent surgical procedures. An estimation of neoplastic invasion of certain blood vessels including portal vein, celiac trunk, and superior mesenteric artery and vein is critical for decision making regarding surgical treatment. The patients with metastases of pancreatic carcinoma were excluded from the study. Results. Comparing color Doppler and the surgical findings we estimated the sensitivity for detection of neoplastic vascular invasion ranging from 79−93%, whereas the specificity range was from 83−93%. Conclusion. Color Doppler ultrasonography is a sufficiently sensitive and specific method for evaluation of vascular invasion in pancreatic carcinoma patients. Since color Doppler ultrasonography is a non-invasive, radiation free, and inexpensive diagnostic tool, considering also the results of this and similar studies we could strongly recommend its use for an initial presurgical evaluation of vascular invasion in pancreatic carcinoma patients.

  15. Tissue Doppler echocardiography reveals impaired cardiac function in patients with reversible ischaemia

    DEFF Research Database (Denmark)

    Hoffmann, Søren; Mogelvang, Rasmus; Sogaard, Peter

    2011-01-01

    AIMS: To determine if echocardiographic tissue Doppler imaging (TDI) performed at rest detects reduced myocardial function in patients with reversible ischaemia. METHODS AND RESULTS: Eighty-four patients with angina pectoris, no previous history of ischaemic heart disease and normal left ventricu......AIMS: To determine if echocardiographic tissue Doppler imaging (TDI) performed at rest detects reduced myocardial function in patients with reversible ischaemia. METHODS AND RESULTS: Eighty-four patients with angina pectoris, no previous history of ischaemic heart disease and normal left...... velocities could be demonstrated in patients with a false-positive SPECT compared with controls. CONCLUSION: In patients with stable angina pectoris, preserved ejection fraction, and reversible ischaemia assessed by SPECT, echocardiographic colour TDI performed at rest reveals impaired cardiac function...

  16. Tissue Doppler echocardiography predicts acute myocardial infarction, heart failure, and cardiovascular death in the general population

    DEFF Research Database (Denmark)

    Mogelvang, Rasmus; Biering-Sørensen, Tor; Jensen, Jan Skov

    2015-01-01

    AIMS: To improve risk prediction of cardiovascular morbidity and mortality, we need sensitive markers of cardiac dysfunction; Echocardiographic Tissue Doppler Imaging (TDI) is feasible and harmless and may be ideal for this purpose. METHODS AND RESULTS: Within the community-based Copenhagen City...... by TDI was associated with increased risk of the combined end point, even in the subgroup of persons with a normal conventional echocardiographic examination [per 1 cm/s decrease: s': HR 1.32 (1.12-1.57), P ... in persons with a normal conventional echocardiographic examination....

  17. Cardiac time intervals by tissue Doppler imaging M-mode echocardiography

    DEFF Research Database (Denmark)

    Biering-Sørensen, Tor

    2016-01-01

    BACKGROUND: The preservation of normal cardiac time intervals is intimately related to normal cardiac physiology and function. In the ailing myocardium, the cardiac time intervals will change during disease progression. As left ventricular (LV) systolic function deteriorates, the time it takes...... of whether the LV is suffering from impaired systolic or diastolic function. A novel method of evaluating the cardiac time intervals has recently evolved. Using tissue Doppler imaging (TDI) M-mode through the mitral valve (MV) to estimate the cardiac time intervals may be an improved method reflecting global...

  18. Comparison between cardiovascular magnetic resonance and transthoracic doppler echocardiography for the estimation of effective orifice area in aortic stenosis

    Directory of Open Access Journals (Sweden)

    Larose Eric

    2011-04-01

    Full Text Available Abstract Background The effective orifice area (EOA estimated by transthoracic Doppler echocardiography (TTE via the continuity equation is commonly used to determine the severity of aortic stenosis (AS. However, there are often discrepancies between TTE-derived EOA and invasive indices of stenosis, thus raising uncertainty about actual definite severity. Cardiovascular magnetic resonance (CMR has emerged as an alternative method for non-invasive estimation of valve EOA. The objective of this study was to assess the concordance between TTE and CMR for the estimation of valve EOA. Methods and results 31 patients with mild to severe AS (EOA range: 0.72 to 1.73 cm2 and seven (7 healthy control subjects with normal transvalvular flow rate underwent TTE and velocity-encoded CMR. Valve EOA was calculated by the continuity equation. CMR revealed that the left ventricular outflow tract (LVOT cross-section is typically oval and not circular. As a consequence, TTE underestimated the LVOT cross-sectional area (ALVOT, 3.84 ± 0.80 cm2 compared to CMR (4.78 ± 1.05 cm2. On the other hand, TTE overestimated the LVOT velocity-time integral (VTILVOT: 21 ± 4 vs. 15 ± 4 cm. Good concordance was observed between TTE and CMR for estimation of aortic jet VTI (61 ± 22 vs. 57 ± 20 cm. Overall, there was a good correlation and concordance between TTE-derived and CMR-derived EOAs (1.53 ± 0.67 vs. 1.59 ± 0.73 cm2, r = 0.92, bias = 0.06 ± 0.29 cm2. The intra- and inter- observer variability of TTE-derived EOA was 5 ± 5% and 9 ± 5%, respectively, compared to 2 ± 1% and 7 ± 5% for CMR-derived EOA. Conclusion Underestimation of ALVOT by TTE is compensated by overestimation of VTILVOT, thereby resulting in a good concordance between TTE and CMR for estimation of aortic valve EOA. CMR was associated with less intra- and inter- observer measurement variability compared to TTE. CMR provides a non-invasive and reliable alternative to Doppler-echocardiography for the

  19. Comparison between Doppler echocardiography and hot-film anemometry in measuring the turbulent shear stress downstream of artificial mitral valves: a methodological study

    Institute of Scientific and Technical Information of China (English)

    SUN Yi; LI Rui-jie; LI Gan-niu; LI Bin; WANG Yu; MA Run-wei; YANG Bai-hui

    2013-01-01

    Background Turbulent shear stress (TSS) plays an important role in the research of fluid dynamics of heart valves.This study aimed to perform a quantitative study of TSS downstream of porcine artificial mitral valves in order to verify the correlation of hot-film anemometry (HFA) and Doppler echocardiography combined with computer-aided image analysis for the detection of TSS.Methods A porcine model of mitral valve replacement was established.HFA and Doppler ultrasound techniques were used to directly and indirectly measure TSS-relevant parameters of the artificial mitral valve following different mitral valve replacements:different approaches were used to reserve the subvalvular apparatus of the mitral valve.A correlation analysis was then carried out.Results There was a significant correlation between the HFA and Doppler ultrasound combined with computer-aided image analysis of the TSS at the same time and at the same site.No significant difference was found in the TSS measured by the two methods.Conclusions Compared with HFA,Doppler echocardiography combined with computer-aided image analysis is a safe,non-invasive,and real-time method that enables accurate and quantitative detection of TSS downstream in vivo,objectively reflecting the flow field downstream of the artificial mitral valve.Doppler ultrasound combined with computeraided image analysis can be employed for quantitatively evaluating the downstream hemodynamic performance of the mitral valve.

  20. Assessment of Coronary Flow Velocity Reserve by Noninvasive Transthoracic Doppler Echocardiography in Patients with Angiographically Normal Coronary Arteries

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The measurement of coronary flow velocity reserve (CFVR) by transthoracic Doppler echocardiography (TTDE) with invasive intracoronary Doppler flow wire technique (ICD) was validated and the pathologicalfactors which influence CFVR in patients with angiographically normal coronary arteries were analyzed. CFVR was determined successfully in left anterior descending artery (LAD) in 37 of 40 patients with angiographically normal coronary arteries (men 22, women 15, age 20-75 years, mean age 54 ± 12 years). Coronary flow velocity was measured in the distal LAD by TTDE with contrast enhancement at baseline and during intravenous adenosine infusion of 140 μg/kg per min within 48 h after ICD technique. Average peak velocity at baseline (APVb), average peak velocity during hyperemia (APVh) and CFVR determined from TTDE were correlated closely with those from ICD measurements (APVb: y=0. 64x+5. 04, r=0. 86, P<0. 001;APVh: y=0.63x+14.36, r=0.82, P<0.001; CFVR: y=0.65x+0.92, r=0.88, P<0. 001).For CFVR measurements, the mean differences between TTDE and ICD methods were 0. 12 ±0.39. CFVR in patients with history of hypertension was significantly lower than that in patients without history of hypertension (P<0.05). Intravascular ultrasound (IVUS) was performed in 34patients. Plaque formation was found in LAD by IVUS in 17 (50 %) patients. No significant difference in CFVR was found between the patients without plaque formation (3. 11±0. 49) and those with plaque formation (2. 76±0.53, P=0. 056). It is suggested that TTDE with contrast enhancement provides reliable measurement of APV and CFVR in the distal LAD. The early stage of atherosclerosis could be detected by IVUS, which may be normal in angiography. CFVR is impaired in patients with history of hypertension compared with that in patients without history of hypertension.

  1. CT angiography and Color Doppler ultrasonography features and sensitivity in detection of carotid arteries diseases

    Directory of Open Access Journals (Sweden)

    Samir Kamenjaković

    2013-04-01

    Full Text Available Introduction: The aim of this research was to compare specifi city and sensitivity of Color Doppler ultrasonographywith CT angiography.Methods: A total of one hundred patients suffering from carotid artery disease (n=200 were tested in this research in the period from June till October, 2011. Average age of the patients was 61.5 years, and most of the patients were in the age group ranging from 55 to 65 years. The level of carotid artery stenosis is measured according to Standards of the North America Symptomatic Carotid Endarterectomy Trail study,by method of Color Doppler ultrasonography and CT angiography.Results: Stenosis <50% registered by Doppler ultrasonography was found in 62% and by CT angiography in 64% patients. Stenosis from 70 to 79% registered by Doppler ultrasonography was found in 88% and by CT angiography in 82% patients. In patients with level of stenosis 70-79% there was a tendencyof registering the stenosis to be higher by Color Doppler ultrasonography, than by CT angiography. In the case of the occlusion, there was also the similar observation, with variation of 8% carotid arteries.Conclusion: Extracranial Doppler and color duplex ultrasound enable reliable detection of both stenosis and occlusion of carotid arteries and accordingly they occupy an important place in radiological algorithm. When it comes to CT angiography it can be concluded that it can provide accurate and exact information regarding the condition of blood vessels as good as Digital Subtractive Angiography can.

  2. Effects of chronic severe pulmonary regurgitation and percutaneous valve repair on right ventricular geometry and contractility assessed by tissue Doppler echocardiography

    DEFF Research Database (Denmark)

    Kjaergaard, Jesper; K. Iversen, Kasper; G Vejlstrup, Niels;

    2010-01-01

    replacement (PPVR) was performed. Tissue Doppler derived measures of global and regional myocardial contractility were obtained by transthoracic echocardiography, and compared to a sham-operated control group (N = 9).RESULTS: Free PR is associated with RV dilatation (RV end-diastolic area increased from 15...... ± 3 to 23 ± 7 cm(2) /m(2) , P strain, and strain rate were unchanged after free PR and after PPVR. No consistent relation...

  3. Tissue Doppler echocardiography improves the diagnosis of coronary artery stenosis in stable angina pectoris

    DEFF Research Database (Denmark)

    Hoffmann, Soren; Jensen, Jan Skov; Iversen, Allan Zeeberg

    2012-01-01

    by colour TDI at six mitral annular sites and averaged to provide global estimates. Duke score (DS), including ST depression, chest pain, and exercise capacity, was used as the outcome of the exercise ECG. Patients with an area stenosis of ≥70% in at least one epicardial coronary artery were categorized......Aim To determine if colour tissue Doppler imaging (TDI) performed at rest in patients with suspected stable angina pectoris (SAP) is able to predict the presence of significant coronary artery disease (CAD). METHODS AND RESULTS: This study comprises 296 consecutive patients with clinically...... suspected SAP, no previous cardiac history, and a normal ejection fraction. All patients were examined by colour TDI, exercise electrocardiogram (ECG), and coronary angiography (CAG). Regional longitudinal systolic (s'), early diastolic (e'), and late diastolic (a') myocardial velocities were measured...

  4. The implication of tissue Doppler echocardiography and cardiopulmonary exercise in early detection of cardiac dysfunction in systemic lupus erythematosus patients

    Science.gov (United States)

    Elnady, Basant M.; Abdelghafar, Ayman Saeed Mohamed; Khalik, El Shazly Abdul; Algethami, Mohammed Mesfer; Basiony, A.S.; Al-otaibi, Mona Dhaif Allah; Al-otaibi, Maram Eidhah

    2016-01-01

    Objective Systemic lupus erythematosus (SLE) can present limitations to exercise capacity and quality of life (QoL) because of various clinical conditions, such as pulmonary disease or heart disease. Tissue Doppler echocardiography (TDE) offers the promise of an objective measurement to quantify regional and global ventricular function through the assessment of myocardial velocity data. This study aimed to assess the intensity of left ventricular (LV) and right ventricular (RV) systolic and diastolic dysfunction in SLE patients by means of TDE and cardiopulmonary exercise (CPX) testing to determine their impact on QoL. Material and Methods Overall, 56 SLE patients within two tertiary healthcare centers as well as 50 healthy controls were examined with TDE after the exclusion of cardiovascular risk factors. TDE was performed for maximal systolic (S), early diastolic (E′), and late diastolic (A′) velocities of the mitral and tricuspid annulus. Pulsed wave (PW) Doppler of mitral and tricuspid valve inflow was performed in addition to the estimation of the left ventricle ejection fraction and assessment of right ventricle systolic function by tricuspid annular plane systolic excursion (TAPSE). Disease activity was assessed by the Systemic Lupus Activity Measure (SLAM), and the damage index was assessed by the Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology (ACR) Damage Index (SDI). CPX tests according to the modified Bruce protocol were performed. Results SLE patients in both subgroups had more or less similar laboratory data and statistically higher values of ESR, CRP, and anticardiolipin (aCL) antibodies compared to the control group. LV function showed statistically insignificant EF compared to the control group, being lower in the patient group. Tissue Doppler image revealed that E′ and A′ of the mitral annulus were lower in the patient group than in the control group. Concerning RV, TAPSE in the patient group was

  5. The impacts of piezoelectric element's defects on color and power doppler images

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Kyung Sung [Dept. of Radiotechnology, Cheju Halla University, Cheju (Korea, Republic of)

    2015-12-15

    An ultrasound probe has a big impact on Doppler images even though it has very high risk of frequent function-breakdowns occurring in medical ultrasound scanners. This study experimentally analyses the impacts of an ultrasonic probe’s defected elements on power and color Doppler images. The results show that, the bigger the size of defected probe elements is, and the closer a group of action elements is to the center, the more the brightness of images and the velocity of Doppler diminish. When elements’ defects increase in color and power Doppler images, false images are formed to be mistaken for blood-vessel plaque in neighboring regions. Accordingly, whenever element defects are suspected, we need check-up process in B-mode. From this respective, it is advisable to have primary interest in a probe and carry out continuous probe QA for ultrasonography.

  6. Color Doppler Imaging in the Diagnosis and Follow-up of Carotid Cavernous Sinus Fistulas

    Institute of Scientific and Technical Information of China (English)

    1993-01-01

    This report describes color doppler imaging (CDI) in theevaluation and follow-up of nine patients with carotid cavernous sinusfistulas.The orbits and carotid arteries were examined with CDI.In allcases,the diagnosis was confirmed by angiography.CDI clearlydemonstrated the dilated superior ophthalmic veins (SOVs) with retrogradeflow and low resistance arterial doppler waveform in all nine patients (10eyes).After the study of quantitative hemodynamics,we found that directcarotid cavernous sinus fistulas s...

  7. Quantification of mitral valve regurgitation with color flow Doppler using baseline shift.

    Science.gov (United States)

    Heß, Hannah; Eibel, Sarah; Mukherjee, Chirojit; Kaisers, Udo X; Ender, Joerg

    2013-02-01

    Vena contracta width (VCW) and effective regurgitant orifice area (EROA) are well established methods for evaluating mitral regurgitation using transesophageal echocardiography (TEE). For color-flow Doppler (CF) measurements Nyquist limit of 50-60 cm/s is recommended. Aim of the study was to investigate the effectiveness of a baseline shift of the Nyquist limit for these measurements. After a comprehensive 2-dimensional (2D) TEE examination, the mitral regurgitation jet was acquired with a Nyquist limit of 50 cm/s (NL50) along with a baseline shift to 37.5 cm/s (NL37.5) using CF. Moreover a real time 3-dimensional (RT 3D) color complete volume dataset was stored with a Nyquist limit of 50 cm/s (NL50) and 37.5 cm/s (NL37.5). Vena contracta width (VCW) as well as proximal isovelocity surface area (PISA) derived EROA were measured based on 2D TEE and compared to RT 3D echo measurements for vena contracta area (VCA) using planimetry method. Correlation between VCA 3D NL50 and VCW NL50 was 0.29 (p < 0.05) compared to 0.6 (p < 0.05) using NL37.5. Correlation between VCA 3D NL50 and EROA 2D NL50 was 0.46 (p < 0.05) vs. 0.6 (p < 0.05) EROA 2D NL37.5. Correlation between VCA 3D NL37.5 and VCW NL50 was 0.45 (p < 0.05) compared to 0.65 (p < 0.05) using VCW NL37.5. Correlation between VCA 3D NL37.5 and EROA 2D NL50 was 0.41 (p < 0.05) vs. 0.53 (p < 0.05) using EROA 2D NL37.5. Baseline shift of the NL to 37.5 cm/s improves the correlation for VCW and EROA when compared to RT 3D NL50 planimetry of the vena contracta area. Baseline shift in RT 3D to a NL of 37.5 cm/s shows similar results like NL50.

  8. Accuracy of flow convergence estimates of mitral regurgitant flow rates obtained by use of multiple color flow Doppler M-mode aliasing boundaries: an experimental animal study.

    Science.gov (United States)

    Zhang, J; Jones, M; Shandas, R; Valdes-Cruz, L M; Murillo, A; Yamada, I; Kang, S U; Weintraub, R G; Shiota, T; Sahn, D J

    1993-02-01

    boundary with an aliasing velocity, of 102 cm/sec, (which was achieved by use of a 4 kHz pulse repetition frequency, a 3.75 MHz transducer, and no color baseline shift), provided the closest fit to the actual regurgitant flow rates (r = 0.99; y = 0.95x + 0.07). The averaged calculated flow rates from all aliasing velocities also resulted in excellent correlation (r = 0.97; y = 0.99x + 0.5). A hemispheric flow convergence method that is based on color Doppler M-mode echocardiography is a feasible and automatable method for quantifying mitral regurgitant rate.(ABSTRACT TRUNCATED AT 400 WORDS)

  9. Laparoscopic splenectomy: color Doppler flow imaging for preoperative evaluation

    Institute of Scientific and Technical Information of China (English)

    XU Wei-li; LI Suo-lin; WANG Yan; SHI Bao-jun; LI Meng; LI Ying-chao; ZHONG Zhi-yong; LI Zhen-dong

    2009-01-01

    Background Laparoscopic splenectomy (LS) is currently the standard approach for resection of a normal-sized spleen.However, this method becomes technical challenge in cases of splenomegaly due to intraoperative hemorrhage. A complete understanding of the splenic vessel anatomy is important to facilitate the difficult laparoscopic procedure. In this retrospective study, we examined the role of color Doppler flow imaging (CDFI) in splenic vessel anatomy and evaluated its value for LS.Methods Forty-eight patients who underwent splenectomy for various hematologic and autoimmune disorders from May 2004 to December 2007 were enrolled in this study. Twenty-three patients underwent preoperative CDFI examination that included examination of the anatomic type of splenic pedicle, the adjacent relationship between the splenic vessel and pancreas, and spleen size (CDFI group). In the remaining 25 patients, ultrasonic inspections of the splenic vessel were not performed (non-CDFI group). Laparoscopic splenectomies in the CDFI group were performed in accordance with the information provided by the preoperative CDFI in each patient. In the non-CDFI group, LS was performed according to the conventional method. In the CDFI group, the constituent ratios of the above-mentioned parameters by CDFI were compared with those recorded during LS using the chi square test. The effectiveness of the technique on surgery in both groups was compared with an independent sample Student's ttest.Results All laparoscopic splenectomies in both groups were performed successfully. However, 2 cases in the non-CDFI group were converted to LS with the assistance of micro-incision because the branches of the splenic vein were inadvertently torn. Two anatomic types of splenic pedicle and four different adjacent relationships between the splenic vessel and pancreas were detected by CDFI. About 80% of spleens fit the criteria of megalosplenia. There were no statistically significant differences between the

  10. [Echo-color Doppler in the study of hypothyroidism in the adult].

    Science.gov (United States)

    Lagalla, R; Caruso, G; Benza, I; Novara, V; Calliada, F

    1993-09-01

    Color-Doppler US was performed on 20 patients with sub-clinic hypothyroidism which had been confirmed by laboratory tests. In all cases, color-Doppler US showed increased parenchymal flow, whose semiology was similar to the one known as "thyroid inferno" and currently associated, in the literature, with diffuse hyperfunction conditions. Quantitative measurements yielded no further element for differential diagnosis, while showing high flow speeds which were similar to those in hyperfunction. On the basis of consequent physiopathologic considerations, hypervascularization, as observed in hypothyroidism, is likely to be referred to the hypertrophic action of TSH, which was reported as high in all patients. In conclusion, the color-Doppler "thyroid inferno" pattern, which has been to date considered as specific of thyroid hyperfunction, has lost part of its diagnostic specificity, and further investigation--e.g. hormonal titers, scintigraphy--is needed for an unquestionable diagnosis to be made.

  11. Ultrasonography and color Doppler in juvenile idiopathic arthritis

    DEFF Research Database (Denmark)

    Laurell, Louise; Court-Payen, Michel; Nielsen, Susan;

    2012-01-01

    The wrist region is one of the most complex joints of the human body. It is prone to deformity and functional impairment in juvenile idiopathic arthritis (JIA), and is difficult to examine clinically. The aim of this study was to evaluate the role of ultrasonography (US) with Doppler in diagnosis...

  12. Diagnosis of Cervical Abortion by TransvaginaI Color Doppler Sonography : A Case Report

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eun Ju; Ryu, Hee Sug; Ji, Hoon; Suh, Jung Ho [Ajou University College of Medicine, Suwon (Korea, Republic of)

    1995-12-15

    Cervical abortion is a spontaneous abortion of an intrauterine pregnancy into the cervical canal where the abortus is retained by a closed external os, causing distension of the cervical canal. Cervical abortion should be distinguished from the cervical pregnancy. We present a case of cervical abortion diagnosed preoperatively by transvaginal sonography and color doppler imaging, and treated by dilatation and curettage. Charateristic transvaginal sonographic findings and identification of subtrophoblastic blood flow by color doppler imaging could allow differentiation of the cevical aborition from the cervical pregnancy

  13. Using Rotation for Steerable Needle Detection in 3D Color-Doppler Ultrasound Images

    OpenAIRE

    Mignon, Paul; Poignet, Philippe; Troccaz, Jocelyne

    2015-01-01

    International audience; This paper demonstrates a new way to detect needles in 3D color-Doppler volumes of biological tissues. It uses rotation to generate vibrations of a needle using an existing robotic brachytherapy system. The results of our detection for color-Doppler and B-Mode ultrasound are compared to a needle location reference given by robot odometry and robot ultrasound calibration. Average errors between detection and reference are 5.8 mm on needle tip for B-Mode images and 2.17 ...

  14. Color Doppler Ultrasonography-Targeted Perforator Mapping and Angiosome-Based Flap Reconstruction

    DEFF Research Database (Denmark)

    Gunnarsson, Gudjon Leifur; Tei, Troels; Thomsen, Jørn Bo

    2016-01-01

    Knowledge about perforators and angiosomes has inspired new and innovative flap designs for reconstruction of defects throughout the body. The purpose of this article is to share our experience using color Doppler ultrasonography (CDU)-targeted perforator mapping and angiosome-based flap reconstr......Knowledge about perforators and angiosomes has inspired new and innovative flap designs for reconstruction of defects throughout the body. The purpose of this article is to share our experience using color Doppler ultrasonography (CDU)-targeted perforator mapping and angiosome-based flap...

  15. High-Frequency Color Doppler Sonography of Bullous Pemphigoid: Correlation With Histologic Findings.

    Science.gov (United States)

    Porriño-Bustamante, María Librada; Alfageme, Fernando; Suárez, Lola; de Domingo, María Antonia González; Hospital, Mercedes; Roustán, Gastón

    2016-08-01

    Bullous pemphigoid is the most frequent autoimmune-mediated blistering skin disease, belonging to the group of subepidermal bullae. We performed high-frequency color Doppler sonography in 3 cases of bullous pemphigoid, in bullous and adjacent non-bullous skin, which showed homogeneous sonographic findings. Subepidermal cystic structures with dermal hypoechogenicity were observed in bullous skin. In nonbullous skin, the dermis showed hypoechogenicity compared to normal skin. Color Doppler signals were increased in both areas. These findings correlate histologically with subepidermal bullae and dermal inflammatory infiltrates.

  16. [Stress echocardiography: development and significance].

    Science.gov (United States)

    Attenhofer, C; Ritter, M; Jenni, R

    1994-08-27

    Exercise electrocardiography is still the primary method used in the non-invasive assessment of coronary artery disease. Stress echocardiography is now being increasingly used as a more sensitive adjunct technique to assess ischemia. Ischemia provoked by stress can induce reversible wall motion abnormalities which are disclosed by cross-sectional 2-dimensional echocardiography and standard projections. The types of stress used are physical exercise (bicycle, treadmill), atrial pacing or pharmacologic stimulation. In the latter, the catecholamine dobutamine has emerged as preferable to the vasodilators dipyridamole and adenosine. The diagnostic accuracy of dobutamine stress echocardiography is comparable to that of bicycle or treadmill exercise echocardiography, but dobutamine stress echocardiography is technically simpler and can be performed in patients unable to exercise. Its sensitivity in diagnosing ischemic or viable myocardium is comparable to that of nuclear methods, MRI or PET. In contrast to nuclear methods, stress echocardiography is however free of radiation. In the assessment of patients with coronary artery disease, stress echocardiography has been shown to be valuable for diagnosis, preoperative risk stratification and determination of prognosis. Furthermore, low dose dobutamine echocardiography can be used to detect viable myocardium. Despite these very promising aspects of the method, there are recognized disadvantages and limitations: stress echocardiography is very time-consuming and operator-dependent; its sensitivity correlates strongly with the number of studies performed; analysis of wall motion is performed qualitatively on a purely subjective level, and hence lacks the objectivity of a quantitative approach. These factors emphasize the need for intensive research to render stress echocardiographic analysis more objective. Automatic boundary detection of left ventricular endocardium, color-Doppler-based tissue imaging and three

  17. Low Complexity Direction and Doppler Frequency Estimation for Bistatic MIMO Radar in Spatial Colored Noise

    Directory of Open Access Journals (Sweden)

    Lingyun Xu

    2014-01-01

    Full Text Available We investigate the algorithm of direction and Doppler frequency estimation for bistatic multiple-input multiple-output (MIMO radar in spatial colored noise. A novel method of joint estimation of direction and Doppler frequency in spatial colored noise based on propagator method (PM for bistatic MIMO radar is discussed. Utilizing the cross-correlation matrix which is formed by the adjacent outputs of match filter in the time domain, the special matrix is constructed to eliminate the influence of spatial colored noise. The proposed algorithm provides lower computational complexity and has very close parameters estimation compared to estimation of signal parameters via rotational invariance technique (ESPRIT algorithm in high signal-to-noise ratio (SNR. It is applicable even if the transmitted waveforms are not orthogonal. The estimated parameters can be paired automatically and the Cramér-Rao Bound (CRB is given in spatial colored noise. Simulation results confirm the effectiveness of the proposed method.

  18. Rats with high left ventricular end-diastolic pressure can be identified by Doppler echocardiography one week after myocardial infarction.

    Science.gov (United States)

    Saraiva, R M; Kanashiro-Takeuchi, R M; Antonio, E L; Campos, O; P J F, Tucci; Moisés, V A

    2007-11-01

    The severity of left ventricular (LV) dysfunction in rats with myocardial infarction (MI) varies widely. Because homogeneity in baseline parameters is essential for experimental investigations, a study was conducted to establish whether Doppler echocardiography (DE) could accurately identify animals with high LV end-diastolic pressure as a marker of LV dysfunction soon after MI. Direct measurements of LV end-diastolic pressure were made and DE was performed simultaneously 1 week after surgically induced MI (N = 16) or sham-operation (N = 17) in female Wistar rats (200 to 250 g). The ratio of peak early (E) to late (A) diastolic LV filling velocities and the ratio of E velocity to peak early (Em) diastolic myocardial velocity were the best predictors of high LV end-diastolic pressure (>12 mmHg) soon after MI. Cut-off values of 1.77 for the E/A ratio (P = 0.001) identified rats with elevated LV end-diastolic pressure with 90% sensitivity and 80% specificity. Cut-off values of 20.4 for the E/Em ratio (P = 0.0001) identified rats with elevated LV end-diastolic pressure with 81.8% sensitivity and 80% specificity. Moreover, E/A and E/Em ratios were the only echocardiographic parameters independently associated with LV end-diastolic pressure in multiple linear regression analysis. Therefore, DE identifies rats with high LV end-diastolic pressure soon after MI. These findings have implications for using serial DE in animal selection and in the assessment of their response to experimental therapies.

  19. Color Doppler US in extra-articular rheumatoid arthritis. Early results; L'eco Doppler nell'artrite reumatoide con localizzazione extra-articolare: esperienza preliminare

    Energy Technology Data Exchange (ETDEWEB)

    Midiri, M. [Bari Politcenico, Bari (Italy). Ist. di Radiologia; Iovane, A.; Finazzo, M.; Brancatelli, G.; Gallo, C.; Lagalla, R. [Palermo Politecnico Universitario Paolo Giaccone, Palermo (Italy). Ist. di Radiologia

    1999-09-01

    The paper investigates the role of color and power Doppler imaging in staging extra-articular involvement, monitoring local inflammatory changes and drug treatment response. [Italian] Scopo del lavoro e' quello di analizzare l'introduzione dell'ecografia con color power Doppler, che offre possibilita' di integrazione dell'ecografia, con particolare riferimento alla dimostrazione del grado di coinvolgimento extra-articolare, allo stato evolutivo, della flogrosi locale e alla risposta al trattamento farmacologico.

  20. The efficacy of magnetic resonance imaging and color Doppler ultrasonography in diagnosis of salivary gland tumors.

    Science.gov (United States)

    Davachi, Behrooz; Imanimoghaddam, Mahrokh; Majidi, Mohamad Reza; Sahebalam, Ahmad; Johari, Masoomeh; Javadian Langaroodi, Adineh; Shakeri, Mohamad Taghi

    2014-01-01

    Background and aims. Although salivary gland tumors are not very common, early diagnosis and treatment is crucial because of their proximity to vital organs, and therefore, determining the efficacy of new imaging procedures becomes important. This study aimed to evaluate the efficacy of magnetic resonance imaging (MRI) and color doppler ultrasonography parameters in the diagnosis and differentiation of benign and malignant salivary gland tumors. Materials and methods. In this cross-sectional study, color doppler ultrasonography and MRI were performed for 22 patients with salivary gland tumor. Demographic data as well as MRI, color doppler ultrasonography, and surgical parameters including tumor site, signal in MRI images, ultrasound echo, tumor border, lymphadenopathy, invasion, perfusion, vascular resistance index (RI), vascular pulse index (PI) were analyzed using Chi-square test, Fisher's exact test, and independent t-test. Results. The mean age of patients was 46.59±13.97 years (8 males and 14females). Patients with malignant tumors were older (P color doppler ultrasonography in determining tumor site was 100% and 95%, respectively. No significant difference observed between RI and PI and the diagnosis of tumor. Conclusion. Both MRI and ultrasonography have high accuracy in the localization of tumors. Well-identified border was a sign of benign tumors. Also, invasion to adjacent structures was a predictive factor for malignancy.

  1. Color doppler ultrasound and quantitative histologic study of angiogenesis in ovarian tumors.

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Objective: To investigate whether there is any correlation between minimum resistance index (RImin) and mierovessel density (MVD) in ovarian tumors. Methods: The intratumor artery RImin of 61 patients with ovarian tumor was measured by color doppler ultra-sound (CDU) preoperatively. MVD i-

  2. Color doppler findings of gastric varices compared with findings on computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Sato, Takahiro; Yamazaki, Katsu; Toyota, Jouji; Karino, Yoshiyasu; Ohmura, Takumi; Suga, Toshihiro [Sapporo Kosei General Hospital (Japan)

    2002-08-01

    The aim of this study was to evaluate the hemodynamics of gastric varices. We evaluated the detection rates of gastric varices, inflowing vessels to gastric varices, and outflowing vessels from gastric varices in 24 patients with gastric varices, using color Doppler sonography, and compared these findings with computed tomography findings. Eighteen patients had F2-type varices and 6 had F3-type, classified according to the Japanese Research Society for Portal Hypertension. Fourteen patients had fundal varices, and 10 had cardiac and fundal varices. The detection rates of collateral veins using color Doppler sonography were as follows: gastric varices were detected in all 24 patients (100%); inflowing vessels, in 21 of the 24 patients (87.5%); and outflowing vessels, in 18 of the 24 patients (75.0%). The detection rates of collateral veins, using computed tomography, were: gastric varices were detected in all 24 patients (100%); inflowing vessels, in all 24 patients (100%); and outflowing vessles, in 21 of the 24 patients (87.5%). The color Doppler findings agreed perfectly with the computed tomography findings in 13 of the 24 patients (54.2%). Although color Doppler sonography is a useful, noninvasive modality for evaluating the hemodynamics of gastric varices, it falls short in visualizing the detailed hemodynamics of the inflowing and outflowing vessels of gastric varices in half of the patients when compared with computed tomography. (author)

  3. Relation between three-dimensional geometry of the inflow tract to the orifice and the area, shape, and velocity of regurgitant color Doppler jets: an in vitro study.

    Science.gov (United States)

    Nicolosi, G L; Budano, S; Grenci, G M; Mangano, S; Cervesato, E; Zanuttini, D

    1990-01-01

    The relation between three-dimensional geometry of the inflow tract to the orifice and the area, shape, and velocity of regurgitant jets was studied in a pulsatile in vitro color Doppler flow model. A 2.5 MHz transducer connected to a diagnostic ultrasound machine was placed in a water tank facing pulsatile jets (duration, 0.5 second) obtained by a calibrated injector. Flow rate from 6 to 52 ml/sec were tested through a 5 mm diameter circular orifice. Four different three-dimensional inflow tract geometries were compared: (A) sharp-edged, (B) Venturi (funnel), (C) converging conical, and (D) diverging conical. Mean velocities of jets were measured by continuous-wave Doppler echocardiography. Driving pressures were also measured by means of a fluid-filled catheter. Two observers independently digitized contours of maximal color jet areas by computer system from two separate sets of experiments. Results are given as the mean values of the four measurements for each parameter. Jet areas were correlated to flow rate, with no difference from A through D. The shape (eccentricity) of jets was different between A and B (p less than 0.05), between B and D (p less than 0.01), and between C and D (p less than 0.01). The shape of jets was correlated with flow rate, continuous-wave velocity, and pressure gradient in B, C, and D but not in A. Measured pressure gradients and estimated gradients by continuous-wave Doppler echocardiography were similarly correlated from A through D.(ABSTRACT TRUNCATED AT 250 WORDS)

  4. Fibromatosis colli: findings at high-resolution ultrasound and color Doppler images

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Deok Hee; Shin, Myung Jin; Choi, Hye Young; Choi, Soo Na Mi; Kim, Yong Hwan [University of Ulsan College of Medicine, Asan Medical Center, Ulsan (Korea, Republic of)

    1993-12-15

    Fibromatosis colli is a unique mass of sternocleidomastoid muscle, which usually presents in neonatal period and disappears within one year of age. The diagnosis of this disease is not difficult with the findings of ultrasound and the unique clinical behavior of the mass. The purposes of this study are to evaluate the detailed sonographic features of fibromatosis colli and to find the value of color Doppler studies on the initial examinations and the follow-up of the patients. Twenty-four patients who were diagnosed as fibromatosis colli by the clinical history and ultrasound examination were studied. Among them, 11 patients underwent follow-up studies including color Doppler imaging. We evaluated the size, shape and echogenicity of the mass. The sonographic features and the findings at color Doppler imaging of 11 follow-up studies were compared with those of the initial examinations. Most of the masses were identified at about 3 weeks of age. The mean size of the masses was30x10x15mm. Most of the masses were round (n=13,54%) or fusiform (n=8,33%) in shape. The chogenicity of the mass was iso- (n=15,63%) or slightly hyperechoic (n=9,37%) to that of the surrounding muscles. All 8 cases examined with color Doppler showed branching pattern of arterial signal within the mass at the initial examination. On the follow-up studies, most of the lesions decreased in size and increased in their echogenicity. There was no color Doppler signal on the follow-up study in 7 out of 8 patients in whom both the initial and the follow-up color Doppler imagings were performed. In conclusion, the sonographic findings of fibromatosis coli were more complicated than those described by previous literatures and color Doppler examination could give more information about this disease especially on follow-up studies. A long term follow-up of larger series is required to know the practical significance of the results of follow-up studies

  5. The impact of total bile acid levels on fetal cardiac function in intrahepatic cholestasis of pregnancy using fetal echocardiography: a tissue Doppler imaging study.

    Science.gov (United States)

    Ataalla, Walid M; Ziada, Dina H; Gaber, Rania; Ossman, Ahmed; Bayomy, Suzan; Elemary, Berihan R

    2016-01-01

    The aim of this study was to assess total bile acid (TBA) levels and its impact on systolic and diastolic functions in fetuses of mothers with intrahepatic cholestasis of pregnancy (ICP) using tissue Doppler imaging (TDI), and to explore the correlation between TBA levels and fetal cardiac function. The study employed 98 pregnant women with ICP who were divided into two groups according to their bile acid levels. Fifty pregnant women without ICP represented the control group. Significant differences in the myocardial tissue velocities of both mitral and tricuspid valves were found between the fetuses of mothers with ICP and TBA levels of 40 mmol/L. There was a significant increase in neonatal respiratory distress, meconium staining and neonatal TBAs in group II compared to the control group and group I. There was a correlation between maternal TBA levels and preterm delivery, APGAR scores and neonatal TBA levels at birth. There was also a positive correlation between maternal TBA and fetal myocardial tissue velocities of both mitral and tricuspid, and fetal diastolic myocardial tissue Doppler velocities. ICP is a very serious condition especially when maternal TBA levels are >40 mmol/L. Fetal echocardiography with tissue Doppler is a useful tool for fetal assessment in patients with ICP. It could be an indication of induction of labor in cases of ICP and bile acid levels ≥40 mol/L. Neonatal echocardiography is mandatory for follow-up and management of these neonates.

  6. Doppler ultrasound in obstetrics and gynecology. 2. rev. and enl. ed.

    Energy Technology Data Exchange (ETDEWEB)

    Maulik, D. [Winthrop Univ. Hospital, Mineola, NY (United States). Dept. of Obstetrics and Gynecology; Zalud, I. (eds.) [Kapiolani Medical Center for Women and Children, Honolulu, HI (United States)

    2005-07-01

    The second edition of Doppler Ultrasound in Obstetrics and Gynecology has been expanded and comprehensively updated to present the current standards of practice in Doppler ultrasound and the most recent developments in the technology. Doppler Ultrasound in Obstetrics and Gynecology encompasses the full spectrum of clinical applications of Doppler ultrasound for the practicing obstetrician-gynecologist, including the latest advances in 3D and color Doppler and the newest techniques in 4D fetal echocardiography. Written by preeminent experts in the field, the book covers the basic and physical principles of Doppler ultrasound; the use of Doppler for fetal examination, including fetal cerebral circulation; Doppler echocardiography of the fetal heart; and the use of Doppler for postdated pregnancy and in cases of multiple gestation. Chapters on the use of Doppler for gynecologic investigation include ultrasound in ectopic pregnancy, for infertility, for benign disorders and for gynecologic malignancies. (orig.)

  7. Evaluation and prognostic significance of left ventricular diastolic function assessed by Doppler echocardiography in the early phase of a first acute myocardial infarction

    DEFF Research Database (Denmark)

    Poulsen, S H; Jensen, S E; Gøtzsche, O

    1997-01-01

    deceleration time development of congestive heart failure during the first week following a first acute myocardial infarction. CONCLUSION: Assessment of left ventricular diastolic function complements measurements of systolic function......AIM: To study the prognostic significance of left ventricular diastolic function evaluated by transmitral and pulmonary venous flow velocities obtained in the early phase of a first acute myocardial infarction in relation to later development of congestive heart failure. METHODS: Pulsed Doppler...... echocardiography of transmitral and pulmonary venous flow was assessed in 65 consecutive patients with a first myocardial infarction within 1 h of arrival in the coronary care unit. RESULTS: A univariate regression analysis identified age, left ventricular ejection fraction

  8. Relation Between Capillary Wedge Pressure Measured by Echocardiography Through Tissue Doppler Imaging (TDI Method and Catheterism in Patients with Mitral Valve Stenosis

    Directory of Open Access Journals (Sweden)

    Mashallah Dehghani

    2006-07-01

    Full Text Available Background: Considering suggested formula in the references and PCWP measured by catheterism, in the present study the relation between pulmonary capillary wedge pressure (PCWP measured the flow velocity of mitral valve and mitral annulus motion through tissue doppler imaging is evaluated Methods: 52 cases of severe MS were admitted for Balloon Mitral Valvolotomy (BMV are included in this study. Mean age was 35±5 years consisting of 40 females and 12 males. Valve area, Pulmonary artery systolic pressure (PAP, E (Maximum Velocity of mitral valve at the beginning of diastole & Em (Maximum rate of mitral annular motion at the beginning of diastole which is recorded through septal or lateral wall annulus site velocity and left atrial (LA size were also measured by echocardiography and PCWP & PAP through catheterism. All patients had normal ejection fraction (EF and coronary arteries; there was no other valvular diseases and shunts. Results: There was a significant correlation between PAP in echocardiography and catheterism. Mean PAP was 53±19 mmHg in echocardiography and 53.9±17.8mmHg in catheterism. There wasn't any correlation between PCWP in echocardiography and catheterism (P=0.33 and also no relation between PCWP and mitral valve area (MVA or LA size (P=0.2. E/Em ratio increased in severe MS cases.Conclusion: E/Em ratio and suggested formula would overestimate the wedge pressure so echocardiography is not a reliable method for measuring PCWP in severe MS. Em velocity and E/Em ratio may be used for estimating MS severity.

  9. Early right ventricular systolic dysfunction in patients with systemic sclerosis without pulmonary hypertension: a Doppler Tissue and Speckle Tracking echocardiography study

    Directory of Open Access Journals (Sweden)

    Baumann Gert

    2010-01-01

    Full Text Available Abstract Background Isovolumetric acceleration (IVA is a novel tissue Doppler parameter for the assessment of systolic function. The aim of this study was to evaluate IVA as an early parameter for the detection of right ventricular (RV systolic dysfunction in patients with systemic sclerosis (SSc without pulmonary hypertension. Methods 22 patients and 22 gender- and age-matched healthy subjects underwent standard echocardiography with tissue Doppler imaging (TDI and speckle tracking strain to assess RV function. Results Tricuspid annular plane systolic excursion (TAPSE (23.2 ± 4.1 mm vs. 26.5 ± 2.9 mm, p 2 vs. 4.1 ± 0.8 m/s2, p Conclusion IVA is a useful tool with high-predictive power to detect early right ventricular systolic impairment in patients with SSc and without pulmonary hypertension.

  10. TORSION TESTIS : ROLE OF COLOR DOPPLER : A STUDY OF 50 CASES

    Directory of Open Access Journals (Sweden)

    Anand

    2015-09-01

    Full Text Available BACKGROUND: T orsion testis is one of the catast r ophic conditions in children and young a d u lts. Traditionally the diagnosis was made clinical presentation and suspicion. Critical decision making is essential to save the testis . OBJECTIVE: To study the usefu lness and efficacy of Doppler ultrasound in correctly diagnosing acute scrotal conditions in children and young adults to save the testis and to avoid negative explorations. METHODS: Over a period of two years 50 patients with acute scrotum were admitted i n general surgery department who underwent Doppler ultrasound scrotum and its efficacy in correctly diagnosing the pathology was analysed. RESULTS: 50 patients with age group <25 years were included in study. Scrotal pain was the most frequent presenting s ymptom of acute scrotum (98% followed by Swelling of the hemiscrolum on the involved side present in 86% of the patients. Doppler ultrasound showed torsion of testis in 18 patients. On Scrotal exploration, torsion of spermatic cord was confirmed in 16 pat ients, one patient had torsion of appendix of testis and the other had Epididymo - orchitis. Thus the sensitivity and specificity of Doppler ultrasonography for testicular torsion was 86.9% and 92.6% respectively. 2 patients with equivocal Doppler findings, but strong clinical suspicion of testicular torsion were explored, and testis was found to be torsed in both two patients. Doppler ultrasonography showed Epididymo - orchitis in 22 patients, torsion of testicular appendage in 2 patients, Idiopathic scrotal edema in one, and in 5 pts no significant pathology found. All twenty patients of epididymo - orchitis, two patients of torsion of testicular appendage, and one patient of idiopathic scrotal edema were managed conservatively. At three weeks follow up, all th e patients were free of symptoms. The sensitivity and specificity of Doppler ultrasonography for epididymo - orchitis was 95% and 100% respectively. CONCLUSIONS: color

  11. Performance of two-dimensional Doppler echocardiography for the assessment of infarct size and left ventricular function in rats.

    Science.gov (United States)

    Nozawa, E; Kanashiro, R M; Murad, N; Carvalho, A C C; Cravo, S L D; Campos, O; Tucci, P J F; Moises, V A

    2006-05-01

    Although echocardiography has been used in rats, few studies have determined its efficacy for estimating myocardial infarct size. Our objective was to estimate the myocardial infarct size, and to evaluate anatomic and functional variables of the left ventricle. Myocardial infarction was produced in 43 female Wistar rats by ligature of the left coronary artery. Echocardiography was performed 5 weeks later to measure left ventricular diameter and transverse area (mean of 3 transverse planes), infarct size (percentage of the arc with infarct on 3 transverse planes), systolic function by the change in fractional area, and diastolic function by mitral inflow parameters. The histologic measurement of myocardial infarction size was similar to the echocardiographic method. Myocardial infarct size ranged from 4.8 to 66.6% when determined by histology and from 5 to 69.8% when determined by echocardiography, with good correlation (r = 0.88; P echocardiography (r = -0.87; P rats.

  12. Performance of two-dimensional Doppler echocardiography for the assessment of infarct size and left ventricular function in rats

    OpenAIRE

    Nozawa E.; Kanashiro R.M.; Murad N.; Carvalho A.C.C.; Cravo S.L.D.; Campos O.; Tucci P.J.F.; Moises V.A.

    2006-01-01

    Although echocardiography has been used in rats, few studies have determined its efficacy for estimating myocardial infarct size. Our objective was to estimate the myocardial infarct size, and to evaluate anatomic and functional variables of the left ventricle. Myocardial infarction was produced in 43 female Wistar rats by ligature of the left coronary artery. Echocardiography was performed 5 weeks later to measure left ventricular diameter and transverse area (mean of 3 transverse planes), i...

  13. Ophthalmic artery color Doppler ultrasonography in mild-to-moderate preeclampsia

    Energy Technology Data Exchange (ETDEWEB)

    Ayaz, Tunahan; Akansel, Gur. E-mail: gakansel@superonline.com; Hayirlioglu, Alper; Arslan, Arzu; Suer, Necdet; Kuru, Ihsan

    2003-06-01

    Objective: To evaluate the hemodynamic changes in mild-moderate preeclampsia using ophthalmic artery Doppler ultrasonography technique. Methods: Ophthalmic artery pulsatility and resistivity indices were calculated in 30 mild-moderate preeclamptic women and 30 normotensive gravid women of matched gestational age. Student's t-test was performed to test the significance of difference. Results: Both indices of peripheral resistance were found to be significantly lower in the ophthalmic arteries of mild-moderately preeclamptic women than those measured in normotensive gravid women at similar stage of pregnancy. In a small number patients whose disease progressed to severe preeclampsia, both indices increased. Conclusion: In patients with mild-moderate preeclampsia, ophthalmic artery color Doppler ultrasonography detects hemodynamic changes that are not present in normotensive gravid women. Reversal of Doppler patterns in a small number of patients with progressive disease supports the hypotheses suggesting the presence of early vasodilation and late vasospasm in the etiology of preeclampsia.

  14. Pulsed and Color Doppler Sonographic Findings of Penile Mondor' Disease

    Energy Technology Data Exchange (ETDEWEB)

    Han, Hye Yeon; Chung, Dong Jin; Kim, Kum Won; Hwang, Cheol Mog [University of Konyang School of Medicine, Daejeon (Korea, Republic of)

    2008-04-15

    Penile Mondor's disease is a rare disease that's characterized by thrombosis in the dorsal vein of the penis. Doppler ultrasonography (US) clearly visualizes dorsal vein thrombosis and the associated hemodynamic alterations. Previous studies have demonstrated the typical color Doppler US findings of superficial dorsal vein thrombosis without the flow signals in this area, yet this is insufficient to understand the hemodynamics in penile Mondor's disease. We report here for the first time a cavernosal artery flow signal pattern in a penile Mondor's disease patient, in addition to its previously reported classic US findings. In conclusion, the Doppler US findings of thrombus without blood flow in the superficial dorsal vein and the low-flow, high resistance in the cavernosal artery may be suggestive of penile Mondor's disease.

  15. Comparison of foetomaternal circulation in normal pregnancies and pregnancy induced hypertension using color Doppler studies.

    Science.gov (United States)

    Gupta, Shikha; Misra, R; Ghosh, U K; Gupta, V; Srivastava, D

    2014-01-01

    The aim of present study was to assess fetomaternal blood flows in normal and abnormal pregnancies using color Doppler indices. Subjects were divided into two groups as: Group A of 25 subjects of normal pregnancy as controls and group B of 25 subjects of pregnancy induced hypertension. All the subjects were lying in the age-group of 25-35 years and having 28 to 34 weeks of gestation; the patients were evaluated by detailed history and were subjected to complete general examination. Blood pressure was taken on two occasions at least 6 hours apart. Systemic examination and obstetrical examination was done in all subjects. All cases were subjected to pathological tests- Haemogram, Test for proteins in urine. Ultrasound assessment of fetal growth was done by measuring BPD (Biparietal diameter), HC (Head circumference), FL (Femur length) and AC (Abdominal circumference): Average gestational age and effective fetal weight was then calculated by ultrasound machine. Color Doppler was used to assess the various Doppler indices indices: Pulsatility index (PI), Resistive index (RI) and Systolic diastolic ratio (S/D ratio) in bilateral uterine, umbilical and middle cerebral arteries and compared to the standard normograms. Percentage of subjects having abnormal Doppler indices were calculated. Assessment of percentage of SGA (small for gestational age) fetuses was done in all the three groups. Decline in mean values of all Doppler indices was found with advancing gestational age in normal pregnancy suggesting decreased vascular resistance and increased blood flow in fetomaternal circulation. In pregnancy induced hypertensives, the mean values of Doppler indices showed a decline as in normal pregnancy but showed an increase (more than 2 S.D. of the mean) for that gestational age in comparison to the control group suggesting increased impedance to blood flow in uteroplacental and fetomaternal circulation. Umbilical artery Doppler indices were found to be the most sensitive

  16. Correlation of ascending aorta elasticity and the severity of coronary artery stenosis in hypertensive patients with coronary heart disease assessed by M-mode and tissue Doppler echocardiography.

    Science.gov (United States)

    Lu, Qixiu; Liu, Houlin

    2015-03-01

    The main objective of this study is to investigate the relationship between ascending aorta elasticity and the severity of coronary artery stenosis in essential hypertensive patients with coronary heart disease (CHD) using M-mode and tissue Doppler echocardiography. A total of 184 hypertensive patients with CHD were enrolled. Patients were divided into three groups based on the severity of coronary stenosis measured by coronary arteriography (CAG): slight stenosis (group 1), moderate stenosis (group 2) and serious stenosis (group 3). M-mode and tissue Doppler echocardiography were performed, and elasticity indexes of ascending aorta including stiffness index, distensibility index, and S wave speed of anterior wall were calculated and correlated with the severity of coronary stenosis. Ascending aorta stiffness index was increased, whereas distensibility index and S wave speed of anterior wall were decreased in moderate and severe stenosis groups compared with slight stenosis group (P coronary artery, and there was a significant correlation between aortic elasticity and severity of coronary artery by Pearson correlation analysis (P coronary stenosis. Elasticity indexes of ascending aorta can serve as predictors for coronary arterial lesion in hypertensive patients.

  17. Image analysis of placental issues using three-dimensional ultrasound and color power doppler

    Science.gov (United States)

    Wang, Qi; Cheng, Qiong; Liu, J. G.

    2007-12-01

    With the development of birthing-process medical science, and insurance requirement of prepotency, the ultrasound technique is widely used in the application of obstetrics realm, especially on the monitoring of embryo's growth. In the recent decade, the introduction of high resolution three-dimensional ultrasonic and color power Doppler scanner provides a much more direct, sensitive, forerunner method for the monitoring of embryo and gravida's prediction. A novel method that depends on examining images of vasculature of placenta to determine the growth of embryo is introduced in this paper. First, get a set of placenta vascularity images of the pregnant woman, taken by Color Doppler Ultrasonic Scanner, then mark some points in these images, where we get a section image, thus we can observe the internal blood vessel distribution at those points. This method provides an efficient tool for doctors.

  18. Color doppler ultrasonography: Its role in detection and treatment outcome in infravesical obstruction

    Directory of Open Access Journals (Sweden)

    Saleem Wani

    2003-01-01

    Full Text Available Bladder weight and detrusor blood perfusion increases significantly with infravesical obstruction (IVO and re-lease of obstruction results in reduction of bladder weight and detrusor blood flow. 38 patients with IVO were sub-jected to color Doppler ultrasonography (CD U to detect the blood flow in the hypertrophied detrusor muscle. Blood flow was detected in 84.5% (Fisher exact probability < 0.001. After surgical relief of obstruction, blood flow remained positive in 21.05% patients at 3 months and 13.10% patients at 6 months, which was because of per-sistence of IVO. Color Doppler ultrasonography (CDU is a simple and non-invasive tool which can help in diag-nosis and follow-up of infravesical obstruction.

  19. The value of high-frequency and color Doppler ultrasonography in diagnosing congenital muscular torticollis

    Directory of Open Access Journals (Sweden)

    Wang Lei

    2012-10-01

    Full Text Available Abstract Background Congenital muscular torticollis (CMT is a relatively common neck deformity in infancy. The aim of our research was to determine the value of high-frequency and color Doppler ultrasonography in diagnosing CMT. Methods Patients with a clinical suspicion of CMT underwent an ultrasound examination before diagnosis, and the sonographic characteristics were analyzed and compared with the clinical findings. Results The sensitivity and specificity of an ultrasound diagnosis for CMT was 95.83% and 83.33%, respectively. The patients were divided into 2 groups based on the stage of the disease: the early-stage group (age Conclusions Different stage of CMT patients had different sonographic characteristics. High-frequency and color Doppler ultrasonography can serve as adjunct confirmation tool for the diagnosis of CMT.

  20. Magnetic resonance imaging in the evaluation of placental adhesive disorders: correlation with color Doppler ultrasound

    Energy Technology Data Exchange (ETDEWEB)

    Masselli, Gabriele; Casciani, Emanuele; Polettini, Elisabetta; Gualdi, Gianfranco [Umberto I Hospital-La Sapienza University, Department of Radiology DEA, Rome (Italy); Brunelli, Roberto; Piccioni, Maria G.; Anceschi, Maurizio [Umberto I Hospital-La Sapienza University, Department of Gynecology and Obstetrics, Rome (Italy)

    2008-06-15

    The purpose of this study was to compare the value of pelvic ultrasound with color Doppler and magnetic resonance imaging (MRI) in: (1) the diagnosis of placental adhesive disorders (PADs), (2) the definition of the degree of placenta invasiveness, (3) determining the topographic correlation between the diagnostic images and the surgical results. Fifty patients in the third trimester of pregnancy with a diagnosis of placenta previa and at least one previous caesarean section underwent color Doppler ultrasound (US) and MRI. The sonographic and MRI diagnoses were compared with the final pathologic or operative findings. Outcomes at delivery were as follows: normal placenta (n = 38) and PAD (n = 12). MR and US Doppler showed no statistically difference in identiyfing patients with PAD (P = 0.74), while MRI was statistically better than US Doppler in evaluating the depth of placenta infiltration (P < 0.001). MRI accurately characterized the topography of invasion in 12/12 (100%) of the cases, while US accurately characterized the topography of invasion in 9/12 (75%) of the cases. In conclusion, we confirmed that pelvic US is highly reliable to diagnose or exclude the presence of PAD and found MRI to be an excellent tool for the staging and topographic evaluation of PAD. (orig.)

  1. Color Doppler Ultrasound Velocimetry Flow Reconstruction using Vorticity-Streamfunction Formulation

    Science.gov (United States)

    Meyers, Brett; Vlachos, Pavlos; Goergen, Craig; Scalo, Carlo

    2016-11-01

    Clinicians commonly utilize Color Doppler imaging to qualitatively assess the velocity in patient cardiac or arterial flows. However Color Doppler velocity are restricted to two-dimensional one-component measurements. Recently new methods have been proposed to reconstruct a two-component velocity field from such data. Vector Flow Mapping (VFM), in particular, utilizes the conservation of mass to reconstruct the flow. However, this method over-simplifies the influence of wall and surrounding blood motion on local measurements, which produce large, non-physical velocity gradients, requiring excessive smoothing operations to remove. We propose a new approach based on the Vorticity-Stream Function (Ψ- ω) formulation that yields more physiologically accurate velocity gradients and avoids any added smoothing operations. Zero-penetration conditions are specified at the walls, removing the need for measurement of wall velocity from additional scans, which introduce further uncertainties in the reconstruction. Inflow and outflow boundary conditions are incorporated by prescribing Dirichlet boundary conditions. The proposed solver is compared against the VFM using computational data to evaluate measurement improvement. Finally we demonstrate the method by evaluating murine left ventricle Color Doppler scans.

  2. Clinical significance of color Doppler ultrasound in detection of hepatic cirrhosis and splenic venous hemodynamics

    Institute of Scientific and Technical Information of China (English)

    Jian-Xia Liu

    2016-01-01

    Objective:To investigate the clinical significance of color Doppler ultrasound in the diagnosis of liver cirrhosis patients with portal and splenic venous hemodynamics.Methods:Select from August 2014 to August 2015 60 cases of liver cirrhosis in our hospital were liver cirrhosis, according to the standard of grading of liver function in Child-Pauh points A, B, C grade and healthy people as healthy group comparative study, the use of color Doppler ultrasound in portal vein diameter (DPV), blood flow velocity (VPV), blood flow (QPV) and splenic vein (DSV), blood flow velocity (VSV), blood flow (QSV) were measured, and calculated DSV/DPV.Results:DPV, DSV, QPV, QSV in liver cirrhosis group were significantly higher than those in the healthy group, VSV and VPV were significantly lower than those in the healthy group (P0.05).Conclusions: Color Doppler ultrasound in portal vein hemodynamics detection has is a simple, noninvasive, repeated operation and other advantages, has an important significance in the evaluation of liver function in patients with liver cirrhosis.

  3. Diagnostic agreement between panoramic radiographs and color doppler images of carotid atheroma

    Directory of Open Access Journals (Sweden)

    Claudia Maria Romano-Sousa

    2009-02-01

    Full Text Available The aim of this study was to investigate the agreement between diagnoses of calcified atheroma seen on panoramic radiographs and color Doppler images. Our interest stems from the fact that panoramic images can show the presence of atheroma regardless of the level of obstruction detected by color Doppler images. Panoramic and color Doppler images of 16 patients obtained from the archives of the Health Department of the city of Valença, RJ, Brazil, were analyzed in this study. Both sides of each patient were observed on the images, with a total of 32 analyzed cervical regions. The level of agreement between diagnoses was analyzed using the Kappa statistics. There was a high level of agreement, with a Kappa value of 0.78. In conclusion, panoramic radiographs can help detecting calcifications in the cervical region of patients susceptible to vascular diseases predisposing to myocardial infarction and cerebrovascular accidents. If properly trained and informed, dentists can refer their patients to a physician for a cardiovascular evaluation in order to receive proper and timely medical treatment.

  4. Diagnostic efficacy of color Doppler ultrasound in evaluation of cervical lymphadenopathy.

    Science.gov (United States)

    Misra, Deepankar; Panjwani, Sapna; Rai, Shalu; Misra, Akansha; Prabhat, Mukul; Gupta, Prashant; Talukder, Subrata K

    2016-01-01

    To evaluate the efficacy of color Doppler ultrasound (CDUS) in differentiating benign and malignant cervical lymph nodes by detecting differences in blood flow patterns. In this cross-sectional prospective study, 25 untreated patients with clinical evidence of cervical lymphadenopathy were evaluated. CDUS was performed for 80 cervical lymph nodes. The gray scale parameters of the lymph node and intranodal perfusion sites were the key CDUS features used to differentiate between reactive and metastatic lymph nodes. Histopathological confirmations were obtained and compared with the results of CDUS. Initially, 53 cervical lymph nodes were evaluated by clinical examination. Twenty-seven additional lymph nodes (53 + 27 = 80) were discovered by CDUS evaluation. Gray scale parameters for lymph nodes such as size of lymph node, shape of lymph node, and presence or absence of hilum revealed highly significant results (P < 0.0001). Color Doppler flow signals revealed that central/hilar flow was characteristic for benign nodes whereas peripheral/mixed flow was characteristic for malignant nodes, the findings were highly significant (P < 0.0001). Gray scale and color Doppler features are used to differentiate benign and malignant nodes. Within the limitations of this study, CDUS evaluation was found to be highly significant with a high sensitivity and specificity over clinical evaluation CDUS examination provides a prospect to reduce the need for biopsy/fine needle aspiration cytology in reactive nodes.

  5. Noninvasive color Doppler sonography of uterine blood flow throughout pregnancy in sheep and goats.

    Science.gov (United States)

    Elmetwally, M; Rohn, K; Meinecke-Tillmann, S

    2016-04-01

    In contrast to cattle or horses, uterine blood flow in small ruminants has been investigated predominantly after surgical intervention and chronic instrumentation. The objective of the present study was to investigate the clinical applicability of noninvasive color Doppler sonography to characterize blood flow in the maternal uterine artery of sheep, n = 11 (18 pregnancies) and goats, n = 11 (20 pregnancies). The following parameters were measured transrectally or transabdominally: blood flow volume, time-averaged maximum velocity (TAMV), resistance index (RI), pulsatility index (PI), Time-averaged mean velocity, impedance of blood flow (AB or systolic/diastolic [S/D] velocity ratio), peak velocity of blood flow and blood flow acceleration. Examinations started 2 weeks after breeding and continued at 2-week intervals until parturition. Outcomes for sheep and goats were similar and will be discussed together. Based on noninvasive color Doppler sonography, blood flow volume increased (approximately 60-fold, P sheep and goats. Furthermore, for uterine artery blood flow, there was an effect of stage of pregnancy on PI and RI (P sheep and goats, respectively, and then decreased until parturition. Similar to PI and RI, vascular impedance of the uterine decreased (P < 0.0001) throughout pregnancy. This is apparently the first study using noninvasive color Doppler sonography of uterine blood flow throughout physiological pregnancy in small ruminants. Clearly, this technology facilitates repeated, noninvasive assessments, with great potential for future studies.

  6. The Evaluation of Diastolic Dysfunction with Tissue Doppler Echocardiography in Women with Subclinical Hypothyroidism and the Effect of L-Thyroxine Treatment on Diastolic Dysfunction: A Pilot Study

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    Gulbanu Erkan

    2011-01-01

    Full Text Available Background. Subclinical hypothyroidism (SH predominantly affects women. The necessity of treatment in SH is controversial. Objective. We aimed to investigate the response of diastolic dysfunction to thyroid hormone replacement therapy (THRT in women. Methods and Results. Twenty-two female subjects with SH and 20 euthyroid female controls were enrolled. Baseline and follow-up biochemical, hormonal, and echocardiographic evaluations were performed. Repeat echocardiograms were performed three months after the achievement of a euthyroid status with THRT. Mean baseline myocardial performance index (MPI was 0.27±0.08 in the SH group, and 0.22±0.06 in the control group (P=0.03. MPI did not change significantly after THRT. Pulsed-wave Doppler findings were not different among the groups. However, tissue Doppler-derived mitral annular E’ velocities were significantly lower in the SH group. A moderate but significant improvement was observed in E’ velocities after THRT (13.2±3.87 versus 14.53±2.75, P=0.04. We also observed left ventricular concentric remodeling in SH patients which was reversible with THRT. Conclusions. Tissue Doppler echocardiography may be a useful tool for monitoring the response of diastolic dysfunction to thyroid hormone replacement therapy in patients with SH. Our findings suggest that THRT may reverse diastolic dysfunction in women with SH.

  7. The evaluation of diastolic dysfunction with tissue Doppler echocardiography in women with subclinical hypothyroidism and the effect of L-thyroxine treatment on diastolic dysfunction: a pilot study.

    Science.gov (United States)

    Erkan, Gulbanu; Erkan, Aycan Fahri; Cemri, Mustafa; Karaahmetoglu, Selma; Cesur, Mustafa; Cengel, Atiye

    2011-01-01

    Background. Subclinical hypothyroidism (SH) predominantly affects women. The necessity of treatment in SH is controversial. Objective. We aimed to investigate the response of diastolic dysfunction to thyroid hormone replacement therapy (THRT) in women. Methods and Results. Twenty-two female subjects with SH and 20 euthyroid female controls were enrolled. Baseline and follow-up biochemical, hormonal, and echocardiographic evaluations were performed. Repeat echocardiograms were performed three months after the achievement of a euthyroid status with THRT. Mean baseline myocardial performance index (MPI) was 0.27 ± 0.08 in the SH group, and 0.22 ± 0.06 in the control group (P = 0.03). MPI did not change significantly after THRT. Pulsed-wave Doppler findings were not different among the groups. However, tissue Doppler-derived mitral annular E' velocities were significantly lower in the SH group. A moderate but significant improvement was observed in E' velocities after THRT (13.2 ± 3.87 versus 14.53 ± 2.75, P = 0.04). We also observed left ventricular concentric remodeling in SH patients which was reversible with THRT. Conclusions. Tissue Doppler echocardiography may be a useful tool for monitoring the response of diastolic dysfunction to thyroid hormone replacement therapy in patients with SH. Our findings suggest that THRT may reverse diastolic dysfunction in women with SH.

  8. Planning digital artery perforators using color Doppler ultrasonography: A preliminary report.

    Science.gov (United States)

    Shintani, Kosuke; Takamatsu, Kiyohito; Uemura, Takuya; Onode, Ema; Okada, Mitsuhiro; Kazuki, Kenichi; Nakamura, Hiroaki

    2016-05-01

    Digital artery perforator (DAP) flaps have been applied for the coverage of finger soft tissue defects. Although an advantage of this method is that there is no scarification of the digital arteries, it is difficult to identify the location of the perforators during intraoperative elevation of the DAP flap. In this study, anatomically reliable locations of DAPs were confirmed using color Doppler ultrasonography (US) in healthy volunteers. A successful case using an adiposal-only DAP flap for the coverage of a released digital nerve using preoperative DAP mapping with color Doppler US is also described. A total of 40 digital arteries in 20 fingers of the right hands of five healthy volunteers (mean age: 32.2 years old) were evaluated. The DAPs were identified using color flow imaging based on the beat of the digital artery in the short axial view. In total, 133 perforators were detected, 76 (an average of 3.8 per finger) arising from the radial digital artery and 57 (an average of 2.9 per finger) arising from ulnar digital artery. Sixty-three perforators (an average of 3.2 per finger) in the middle phalanges and 70 (an average of 3.5 per finger) in the proximal phalanges were found. Overall, an average of 1.7 perforators from each digital artery was detected in the proximal or middle phalanges. Moreover, at least one DAP per phalanx was reliably confirmed using color Doppler US. Preoperative knowledge of DAP mapping could make elevating the DAP flap easier and safer.

  9. Color Doppler quantitative measures to predict outcome of biopsies in prostate cancer

    Energy Technology Data Exchange (ETDEWEB)

    Strigari, Lidia; Marsella, Annelisa; Canitano, Stefano; Gomellini, Sara; Arcangeli, Stefano; Genovese, Elisabetta; Saracino, Biancamaria; Petrongari, Maria Grazia; Sentinelli, Steno; Crecco, Marcello; Benassi, Marcello; Arcangeli, Giorgio [Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, Rome 00144 (Italy); Radiology Department, Regina Elena National Cancer Institute, Rome 00144 (Italy); Radiotherapy Department, Regina Elena National Cancer Institute, Rome 00144 (Italy); Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Center, Rome 00144 (Italy); Radiotherapy Department, Regina Elena National Cancer Center, Rome 00144 (Italy); Pathology Department, Regina Elena National Cancer Center, Rome 00144 (Italy); Radiology Department, Regina Elena National Cancer Center, Rome 00144 (Italy); Laboratory of Medical Physics and Expert Systems, Regina Elena National Cancer Institute, Rome 00144 (Italy); Radiotherapy Department, Regina Elena National Cancer Institute, Rome 00144 (Italy)

    2008-11-15

    Purpose: The aim was to correlate the color Doppler flow activity pre- and postradiotherapy, using transrectal color Doppler ultrasonography (CDUS) and the 2 year positive biopsy rate after radiotherapy in patients with prostate cancer. Methods and materials: Analysis was carried out in 69 out of 160 patients who had undergone treatment with 3D-conformal radiotherapy (3D-CRT) to prostate and seminal vesicles. Patients were randomized to receive 80 Gy in 40 fractions in 8 weeks (arm A) and 62 Gy in 20 fractions in 5 weeks, 4 fractions per week (arm B). Color Doppler flow activity (CDFA) was evaluated calculating the vascularization index (VI), defined as the ratio between the colored and total pixels in the whole and peripheral prostate, delineated by a radiation oncologist on CDUS images, using EcoVasc a home-made software. The difference between the 2 year post- and pre-3D-CRT maximum VI (VI{sub max}), named {Delta}VI{sub max}, was calculated in the whole and peripheral prostate for each patient. Then, {Delta}VI{sub max} and the detected 2 year biopsy outcome were analyzed using the receiver operating characteristics (ROC) technique. Results: The VI{sub max} increased or decreased in patients with positive or negative biopsies, respectively, compared to the value before RT in both arms. The area under the ROC curve for {Delta}VI{sub max} in the whole and peripheral prostate is equal to 0.790 and 0.884, respectively. Conclusion: The {Delta}VI{sub max} index, comparing CDFA at 2 years compared to that before RT, allows the 2 year postradiotherapy positive biopsy rate to be predicted.

  10. An evaluation of range gated pulsed Doppler echocardiography for detecting pulmonary outflow tract obstruction in d-transposition of the great vessels.

    Science.gov (United States)

    Areias, J C; Goldberg, S J; Spitaels, S E; de Villeneuve, V H

    1978-10-01

    The aim of this study was to determine the accuracy of range gated pulsed Doppler (RGPD) echocardiography for detecting obstruction to the pulmonary outflow tract in children with d-transposition of the great vessels (d-TGV). Twenty-one children were randomly selected for those available with d-TGV and were studied by precordial and suprasternal RGPD echocardiography. Three were excluded, leaving a population of 18 subjects. The exclusive criterion used to judge the RGPD results was the output of the time interval histogram (TIH). Coherence of the TIH was considered to represent laminar flow. Dispersion of the TIH was considered evidence of flow disturbance and obstruction to the outflow tract. With the range gating feature, the first site of disturbance could be localized. Information was handled by a technique that decreased bias. RGPD results were then compared to diagnoses of the outflow tract established at cardiac catheterization or operation. Comparison of these results indicated that all seven children with obstruction were correctly identified by RGPD study, and the level of the first obstruction was correctly identified. With one exception, all children without pulmonary obstruction were correctly identified by the examination.

  11. The influence of sulindac on diabetic cardiomyopathy: a non-invasive evaluation by Doppler echocardiography in streptozotocin-induced diabetic rats.

    Science.gov (United States)

    Krishna, Kota M; Gopal, Gopisetty S; Chalam, Chitrapu R V; Madan, Kalagara; Kumar, Veeravalli K; Prakash, Gomedhikam J; Annapurna, Akula

    2005-08-01

    The aim of the present study was to investigate the cardioprotective activity of sulindac as an aldose reductase inhibitor in the development of cardiomyopathy by non-invasive techniques; M-mode and Doppler echocardiography. Diabetes was induced by streptozotocin (45 mg/kg, iv) in the Sprague-Dawley rats. Echocardiography, biochemical and histological studies were carried out in normal control, diabetic untreated, diabetic vehicle (sodium carboxy methyl cellulose, 1%, po) and sulindac (6 mg/kg and 20 mg/kg, po) treated animals at varying time intervals. In the diabetic untreated and vehicle treated rats at 12 weeks after induction of diabetes, there was a significant decrease in the E-wave, an increase in the A-wave and corresponding decrease in the E/A ratio was observed. Significant decrease in the Eat was found after 12 weeks (P rats (P rats, whereas in the sulindac (6 mg/kg) treated rats, minimal necrosis was found, with no evidence of necrosis in sulindac (20 mg/kg) group. Our results show for the first time that sulindac has a cardioprotective activity as this agent prevented the development of left ventricular dysfunction in STZ-induced diabetic rats in the 12-week chronic study.

  12. Performance of two-dimensional Doppler echocardiography for the assessment of infarct size and left ventricular function in rats

    Directory of Open Access Journals (Sweden)

    Nozawa E.

    2006-01-01

    Full Text Available Although echocardiography has been used in rats, few studies have determined its efficacy for estimating myocardial infarct size. Our objective was to estimate the myocardial infarct size, and to evaluate anatomic and functional variables of the left ventricle. Myocardial infarction was produced in 43 female Wistar rats by ligature of the left coronary artery. Echocardiography was performed 5 weeks later to measure left ventricular diameter and transverse area (mean of 3 transverse planes, infarct size (percentage of the arc with infarct on 3 transverse planes, systolic function by the change in fractional area, and diastolic function by mitral inflow parameters. The histologic measurement of myocardial infarction size was similar to the echocardiographic method. Myocardial infarct size ranged from 4.8 to 66.6% when determined by histology and from 5 to 69.8% when determined by echocardiography, with good correlation (r = 0.88; P < 0.05; Pearson correlation coefficient. Left ventricular diameter and mean diastolic transverse area correlated with myocardial infarct size by histology (r = 0.57 and r = 0.78; P < 0.0005. The fractional area change ranged from 28.5 ± 5.6 (large-size myocardial infarction to 53.1 ± 1.5% (control and correlated with myocardial infarct size by echocardiography (r = -0.87; P < 0.00001 and histology (r = -0.78; P < 00001. The E/A wave ratio of mitral inflow velocity for animals with large-size myocardial infarction (5.6 ± 2.7 was significantly higher than for all others (control: 1.9 ± 0.1; small-size myocardial infarction: 1.9 ± 0.4; moderate-size myocardial infarction: 2.8 ± 2.3. There was good agreement between echocardiographic and histologic estimates of myocardial infarct size in rats.

  13. Gray-scale and color doppler US features corresponding to histological subtypes of papillary thyroid carcinoma

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    Lee, Sang Kwon; Kwon, Sun Young; Woo, Seong Ku [Dongsan Medical Center, Keimyung University College of Medicine, Daegu (Korea, Republic of)

    2007-01-15

    To compare the gray-scale and color or power Doppler ultrasonographic (US) features according to the histological subtypes of a papillary thyroid carcinoma (PTC). The gray-scale and color or power Doppler US features of 159 surgically confirmed PTC (classic type of PTC, 69; classic type of papillary microcarcinoma [PMC], 67; and follicular variant of PTC [FVPTC], 23) in 118 patients were analyzed retrospectively. The following US characteristics were evaluated: the type of vascularization, echogenicity, outline, ratio of anteroposterior/transverse (AP/T) diameters, as well as the presence or absence of halo sings, cystic changes, and microcalcification. The most common type of vascularization was penetrating or central (75.4%) for the classic type of PTC, avascular (56.7%) for PMC, and peripheral and central (82.6%) for FVPTC. The echogenicity was most commonly hypoechoic (47.8%) for the classic type, hypoechoic (74.6%) for PMC, and isoechoic (30.4%) for FVPTC. The outline was most often irregular (60.9%) for the classic type, irregular (86.6%) for PMC, and regular (91.3%) for FVPTC. The ratio of the AP/T diameters was 1.0 or more in 31.9%, 55.2%, and 13.0%, a halo sign was observed in 30.4%, 6.0%, and 78.3%, cystic changes was present in 1.4%, 0%, and 21.7%, and microcalcifications were present in 55.1%, 28.4%, and 13.0% of those with the classic type, PMC and FVPTC, respectively. The gray-scale and color Doppler US features corresponding to the histological subtypes of PTC are significantly different from one another. The US features of FVPTC appear to be significantly different from the other subtypes in that they tend to have more benign US characteristics than those of the classic type or PMC.

  14. Renal venous thrombosis in an infant with predisposing thrombotic factors: color Doppler ultrasound and MR evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Argyropoulou, Maria I.; Papadopoulou, Frederica; Nikolopoulos, Pangiotis [Department of Radiology, Medical School, University of Ioannina, 45110, Ioannina (Greece); Giapros, Vassilios I.; Drougia, Aikaterini A.; Andronikou, Styliani [Neonatology Clinic, Medical School, University of Ioannina, 45110, Ioannina (Greece); Vartholomatos, Georgios A. [Department of Haematology, Medical School, University of Ioannina, 45110, Ioannina (Greece)

    2003-08-01

    We report a case of a neonate with hereditary thrombophilia presenting with renal venous thrombosis (RVT). Early color Doppler findings of RVT were lacking venous flow, and the arterial diastolic flow was reversed. This very high-resistance arterial flow is for the first time described in neonatal RVT. Magnetic resonance imaging showed low signal intensity of the renal pyramids on T1- and T2-weighted images, suggesting acute hemorrhage. After intravenous contrast injection, persistent cortical enhancement was observed along with lack of medullary enhancement. Despite the progressive reestablishment of some venous drainage, the kidney showed atrophy and loss of function. (orig.)

  15. MR angiography versus color Doppler sonography in the evaluation of renal vessels and the inferior vena cava in abdominal masses of pediatric patients.

    Science.gov (United States)

    Pfluger, T; Czekalla, R; Hundt, C; Schubert, M; Graubner, U; Leinsinger, G; Scheck, R; Hahn, K

    1999-07-01

    Involvement of renal vessels and the inferior vena cava (IVC) plays a decisive role during operative planning for removal of abdominal masses in pediatric patients. Advantages and limitations of MR angiography and color Doppler sonography for determining these factors were evaluated. MR angiography and color Doppler sonography were performed preoperatively in 42 neonates, infants, and children with abdominal masses and were compared with spin-echo MR imaging and with surgical findings. Variables evaluated were anatomic variants, vessel displacement, patency of vessels, collateral circulation, and intravascular tumor extension. Quality of vessel visualization was assessed in vessels not affected by tumor. In 88% of unaffected renal vessels, the entire vessel course could be visualized on MR angiography compared with 58% on color Doppler sonography and 43% on spin-echo MR imaging. In four of nine cases, color Doppler sonography revealed an accessory renal artery, whereas MR angiography revealed these variants in seven of nine cases. MR angiography showed 79% and color Doppler sonography 66% of displaced vessels. Unlike MR angiography, color Doppler sonography did not reveal five stenotic renal veins because they could not be completely imaged. In two cases, however, MR angiography falsely indicated an occlusion of the IVC, whereas color Doppler sonography showed residual flow. Anatomic variants, vessel displacement, collateral circulation, and neoplastic vessel infiltration were revealed more accurately by MR angiography than by color Doppler sonography. In cases in which patency of the IVC is unclear on MR angiography, color Doppler sonography should also be performed.

  16. Enhanced sensitivity in H photofragment detection by two-color reduced-Doppler ion imaging

    Energy Technology Data Exchange (ETDEWEB)

    Epshtein, Michael; Portnov, Alexander; Kupfer, Rotem; Rosenwaks, Salman; Bar, Ilana, E-mail: ibar@bgu.ac.il [Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105 (Israel)

    2013-11-14

    Two-color reduced-Doppler (TCRD) and one-color velocity map imaging (VMI) were used for probing H atom photofragments resulting from the ∼243.1 nm photodissociation of pyrrole. The velocity components of the H photofragments were probed by employing two counterpropagating beams at close and fixed wavelengths of 243.15 and 243.12 nm in TCRD and a single beam at ∼243.1 nm, scanned across the Doppler profile in VMI. The TCRD imaging enabled probing of the entire velocity distribution in a single pulse, resulting in enhanced ionization efficiency, as well as improved sensitivity and signal-to-noise ratio. These advantages were utilized for studying the pyrrole photodissociation at ∼243.1 and 225 nm, where the latter wavelength provided only a slight increase in the H yield over the self-signal from the probe beams. The TCRD imaging enabled obtaining high quality H{sup +} images, even for the low H photofragment yields formed in the 225 nm photolysis process, and allowed determining the velocity distributions and anisotropy parameters and getting insight into pyrrole photodissociation.

  17. [Echotomography and color-Doppler in the diagnosis of thyroid carcinoma].

    Science.gov (United States)

    Messina, G; Viceconti, N; Trinti, B

    1996-01-01

    Ultrasound examination of the thyroid gland is used extensively in the diagnosis of thyroid carcinoma: it is easy and rapid to perform and widely available. Ultrasound enables easy identification of the image of disease foci within the gland, especially when high frequency probes (7.5-10 MHz) are used. Thyroid nodules are subdivided on the basis of their echostructure into hypoechoic solid, isoechoic solid, and hyperechoic solid, mixed, and liquid. In neoplastic pathologies, a hypoechoic echostructure is not pathognomonic of malignancy but must be regarded with suspicion, especially if it is an isolated nodule in a male patient and continues to grow during suppressive therapy. In fact, thyroid neoplasms evidence a hypoechoic echostructure in 60-70% of the cases, while a hyperechoic echostructure is present in only 2-4%. Only 15-25% of neoplasms appear as isoechoic nodules; a mixed echostructure is rarely (5-10% of the cases) seen. Color-Doppler patterns are classified into four types: I) nodules without internal or perinodular vascularization; II) nodules with vascularization confined to extranodular tissue; III) nodules with significant intra- and perinodular vascularization; IV) increased vascularization (or "thyroid inferno"). The vast majority of thyroid carcinoma (90%) presents type III vascularization. We therefore suggest the routine use of ultrasonography and color-Doppler studies in conjunction with fine-needle aspiration cytology for the diagnostic evaluation of thyroid carcinoma.

  18. New adaptive clutter rejection for ultrasound color Doppler imaging: in vivo study.

    Science.gov (United States)

    Yoo, Yang Mo; Kim, Yongmin

    2010-03-01

    Clutter rejection is essential for accurate flow estimation in ultrasound color Doppler imaging. In this article, we present a new adaptive clutter rejection (ACR) technique where an optimum filter is dynamically selected depending upon the underlying clutter characteristics (e.g., tissue acceleration and power). We compared the performance of the ACR method with other adaptive methods, i.e., down-mixing (DM) and adaptive clutter filtering (ACF), using in vivo data acquired from the kidney, liver and common carotid artery. With the kidney data, the ACR method provided an average improvement of 3.05 dB and 1.7 dB in flow signal-to-clutter ratio (SCR) compared with DM and ACF, respectively. With the liver data, SCR was improved by 2.75 dB and 1.8 dB over DM and ACF while no significant improvement with ACR was found in the common carotid artery data. Thus, the proposed adaptive method could provide more accurate flow estimation by improving clutter rejection in abdominal ultrasound color Doppler imaging pending validation.

  19. The Study of Ovarian Artery Hemodynamics in Patients with Infertility by Color Doppler Energy

    Institute of Scientific and Technical Information of China (English)

    肖先桃; 乐桂蓉; 张友耿; 黎春蕾

    2001-01-01

    Seventy-four cases of infertility were examined to study the hemodynamics of the bilateral ovarian arteries at 21st day during the corpus luteum phase by color Doppler energy(CDE) and color Doppler flow imaging (CDFI). All the patients were verified by laparoscopy, fallopian tube patency examination and ovarian function test. Twenty-two healthy women served as controls. The results showed that the difference of resistance index(RI)and pulsatility index (PI) of bilateral ovarian arteries between the infertility and the normal controls had statistical significance (P<0.01), and the PI showed negative correlation with the thickness of endometrium (left side: r=0.724, P<0.01; right side: r=0.756, P<0.01). The results also showed that CDE was more sensitive than CDFI in displaying the ovarian arteries. It could be concluded that the elevated resistance of ovarian artery during the corpus luteum phase was one of the important factors that resulted in infertility.

  20. Sonography and Color Doppler in the Evalua-tion of Cold Thyroid Nodules

    Directory of Open Access Journals (Sweden)

    M. A. Shabani Samghabadi

    2004-06-01

    Full Text Available Background/Objective: Thyroid nodules are a common finding, especially in our country. In this study, we evaluated the role of conventional ultrasonography (US and color doppler sonography (CDS in assessment of cold thyroid nodules. Materials and Methods: Ninety-seven patients with a cold thyroid nodule were examined by US and CDS before thyroidectomy .On US, the presence of a halo sign, hypoechogenicity or microcalcification was evaluated .The vascular pattern on CDS was classified as follows: Type 1, absence of blood flow; Type 2, perinodular blood flow; Type 3, intranodular blood flow. Sensitivity, specificity, negative predictive value, positive predictive value and accuracy of ultrasound and color doppler findings were evaluated. Ultrasound findings have been compared with postoperative pathological result. Results: In 38 patients, thyroidal carcinoma was found. Absence of halo sign, presence of microcalcification and hypoechogenicity were predictive of malignancy (P < 0.001. Presence of intranodular hyper-vascularity and perinodular hypervascularity were in favor of malignancy (P < 0.001 and benignity (P < 0.01, respectively. An avascular pattern could not differentiate between benign and malignant nodules. Conclusion: US and CDS findings can predict malignant nodules, especially when multiple signs are simultaneously present.

  1. Vascular waveform analysis of flap-feeding vessels using color Doppler ultrasonography.

    Science.gov (United States)

    Ogino, Akihiro; Onishi, Kiyoshi

    2014-01-01

    We performed vascular waveform analysis of flap-feeding vessels using color Doppler ultrasonography and evaluated the blood flow in the flaps prior to surgery. Vascular waveform analysis was performed in 19 patients. The analyzed parameters included the vascular diameter, flow volume, flow velocity, resistance index, pulsatility index, and acceleration time. The arterial waveform was classified into 5 types based on the partially modified blood flow waveform classification reported by Hirai et al.; in particular, D-1a, D-1b, and D-2 were considered as normal waveforms. They were 4 patients which observed abnormal vascular waveform among 19 patients (D-4 : 1, D-3 : 1, and Poor detect : 2). The case which presented D-4 waveform changed the surgical procedure, and a favorable outcome was achieved. Muscle flap of the case which presented D-3 waveform was partially necrosed. The case which detected blood flow poorly was judged to be the vascular obstruction of the internal thoracic artery. In the evaluation of blood flow in flaps using color Doppler ultrasonography, determination of not only basic blood flow information, such as the vascular distribution and diameter and flow velocity, but also the flow volume, vascular resistance, and arterial waveform is essential to elucidate the hemodynamics of the flap.

  2. Evaluation of patients with thyrotoxic autoimmune thyroiditis by color flow doppler ultrasonography

    Directory of Open Access Journals (Sweden)

    Ömer Karakaş

    2013-03-01

    Full Text Available Objective: In this study, we aimed to examine the availabilityand the effects of differential diagnosis of thyroidgland morphological changes and blood flow patterns inpatients with thyrotoxic phase Graves’ disease (BGDand Hashimoto’s thyroiditis (HT by color flow doppler ultrasonography(CDUS.Methods: This cross-sectional study was included 24consecutive patients with thyrotoxicosis and 18 healthycontrols. There were Basedow-Graves’ disease in 17 andHashimoto thyroiditis in 7 of previously untreated 24 patients.Morphological information of thyroid gland was obtainedby B-mode ultrasonography in all cases. Blood flowpattern of the thyroid gland was determined by CDUS.Results: The thyroid volumes and FT3, TRAb, 4-h and24-h RAIU levels of the patients with Graves’s diseasewere significantly higher than the patients with HT.Whereas thyroid gland echogenicity was decreased in 14of BGH cases, it was diminished in 2 patients with HT.Significant difference was found between BGD and HTgroups in terms of thyroid gland echogenicity. In all patientswith BGD and HT, echopattern was heterogenous.In all patients, blood flow patterns of thyroid gland wereobtained by CDUS. Color flow doppler ultrasonographyand pattern 3 blood flows were only observed in BGD.Significant difference was found between HT and BGDgroups in blood flow pattern.Conclusion: Heterojen echopattern, decreased echogenicity,volume changes and type 3 blood flow patternof thyroid gland obtained using B-mode Ultrasound andCDUS may be useful in the determination and differentiationof thyrotoxic BGD and HT diseases. J Clin Exp Invest2013; 4 (1: 73-79Key words: Doppler ultrasonography, autoimmune thyroiditis,thyrotoxicosis

  3. Gender-related asymmetric brain vasomotor response to color stimulation: a functional transcranial Doppler spectroscopy study

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    Njemanze Philip C

    2010-11-01

    Full Text Available Abstract Background and Purpose The present study was designed to examine the effects of color stimulation on cerebral blood mean flow velocity (MFV in men and women. Methods The study included 16 (8 men and 8 women right-handed healthy subjects. The MFV was recorded simultaneously in both right and left middle cerebral arteries in Dark and white Light conditions, and during color (Blue, Yellow and Red stimulations, and was analyzed using functional transcranial Doppler spectroscopy (fTCDS technique. Results Color processing occurred within cortico-subcortical circuits. In men, wavelength-differencing of Yellow/Blue pairs occurred within the right hemisphere by processes of cortical long-term depression (CLTD and subcortical long-term potentiation (SLTP. Conversely, in women, frequency-differencing of Blue/Yellow pairs occurred within the left hemisphere by processes of cortical long-term potentiation (CLTP and subcortical long-term depression (SLTD. In both genders, there was luminance effect in the left hemisphere, while in men it was along an axis opposite (orthogonal to that of chromatic effect, in women, it was parallel. Conclusion Gender-related differences in color processing demonstrated a right hemisphere cognitive style for wavelength-differencing in men, and a left hemisphere cognitive style for frequency-differencing in women. There are potential applications of fTCDS technique, for stroke rehabilitation and monitoring of drug effects.

  4. Tissue Doppler echocardiography reveals distinct patterns of impaired myocardial velocities in different degrees of coronary artery disease

    DEFF Research Database (Denmark)

    Hoffmann, Soren; Mogelvang, Rasmus; Olsen, Niels Thue

    2010-01-01

    Aim To determine how the left ventricular wall motion assessed by echocardiographic Tissue Doppler Imaging (TDI) is affected by increasing severity of coronary artery disease (CAD) among patients with stable angina pectoris and preserved ejection fraction. METHODS AND RESULTS: This study comprises.......86 +/- 0.24 vs. 1.00 +/- 0.28, P preserved ejection fraction reveals both diastolic and systolic dysfunction and the nature...

  5. Color Doppler measurement of blood flow in the inferior thyroid artery in patients with autoimmune thyroid diseases

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    Caruso, Giuseppe; Attard, Marco; Caronia, Aurelio; Lagalla, Roberto

    2000-10-01

    Purpose: The aim of the study is to find out whether the measurement of peak systolic velocity in the inferior thyroid artery (ITA) is a valuable parameter to differentiate autoimmune thyroid diseases (hyper-, normo- or hypofunctional) and to evaluate the efficacy of medical treatment. Material and methods: The ITA of 31 patients (eight with Graves' disease, 23 with subclinical hypothyroidism) was examined with color Doppler and pulsed Doppler. The final diagnosis was obtained by citology and by hormonal and antibodies assays. The patients were monitorized by ultrasound for a period of 8 months. Results: In all the patients with Graves' disease the peak systolic velocity was always over 150 cm/s, while in other autoimmune thyroiditis the peak systolic velocity was within the normal range, and never exceeding 65 cm/s. In the first group, the measurement taken in the ITA showed also the efficacy of the pharmacological treatment earlier and more reliably than the color Doppler pattern obtained in the parenchyma. Conclusions: The color Doppler measurement of the ITA seems to be a promising technique with low-cost and easy approach. In our experience, the color Doppler of the ITA could have a clinical role in the differential diagnosis of diffuse thyroid diseases and in the follow-up of the Graves' disease during medical treatment.

  6. Non-invasive evaluation of myocardial reperfusion by transthoracic Doppler echocardiography and single-photon emission computed tomography in patients with anterior acute myocardial infarction

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    Celutkiene Jelena

    2011-05-01

    Full Text Available Abstract Background The study was designed to evaluate whether the preserved coronary flow reserve (CFR 72 hours after reperfused acute myocardial infarction (AMI is associated with less microvascular dysfunction and is predictive of left ventricular (LV functional recovery and the final infarct size at follow-up. Methods In our study, CFR was assessed by transthoracic Doppler echocardiography (TDE in 44 patients after the successful percutaneous coronary intervention during the acute AMI phase. CFR was correlated with contractile reserve assessed by low-dose dobutamine echocardiography and with the total perfusion defect measured by single-photon emission computed tomography 72 hours after reperfusion and at 5 months follow-up. The ROC analysis was performed to determine test sensitivity and specificity based on CFR. Categorical data were compared by an χ2 analysis, continuous variables were analysed with the independent Student's t test. In order to analyse correlation between CFR and the parameters of LV function and perfusion, the Pearson correlation analysis was conducted. The linear regression analysis was used to assess the relationship between CFR and myocardial contractility as well as the final infarct size. Results We estimated the CFR cut-off value of 1.75 as providing the maximal accuracy to distinguish between patients with preserved and impaired CFR during the acute AMI phase (sensitivity 91.7%, specificity 75%. Wall motion score index was better in the subgroup with preserved CFR as compared to the subgroup with reduced CFR: 1.74 (0.29 vs. 1.89 (0.17 (p Conclusion The early measurement of CFR by TDE can be of high value for the assessment of successful reperfusion in AMI and can be used to predict LV functional recovery, myocardial viability and the final infarct size.

  7. [Intracranial blood flow velocities evaluated by color Doppler (duplex) in preterm infants].

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    de Assis, Marcelo Cardoso; Machado, Helio Rubens

    2004-03-01

    In order to ascertain the blood flow velocities in the intracranial arteries we evaluated 73 preterm neonates during a period ranging from June 1994 to March 1999. These preterm infants were divided in two separate groups, 18 healthy and 55 with intracranial hemorrhage. They were subjected to sequential measurements of blood flow velocities in the intracranial arteries. The gestational age of the whole group varied from 28 to 36 weeks and birth weights between 720 and 2530 g. The diagnosis of the intracerebral hemorrhages in these preterm neonates were done using high resolution gray and color scale transfontanellar ultrasonography brain scans. The ultrasound evaluations were performed in the initial 3rd, 7th and 14th day of life. The 73 preterm infants were evaluated with sequential measurements of blood flow velocity in the intracranial arteries using the Doppler technique through the anterior fontanelle. Doppler evaluation of the cerebral vessels were performed on days 3, 7, 30 and 90 of life. These evaluations were performed in the six intracranial arteries, meaning: right and left anterior and middle cerebral arteries and right and left internal carotid arteries. Doppler recordings were made using Duplex Color-Doppler system, pulse echo probe of 3,5; 5,0 and 7,5 MHz. Measuring the blood flow velocity in the cerebral arteries we obtained a maximum systolic velocity and end diastolic velocity with a rate in meters per second (m/s) for each cardiac cycle. After obtaining these numerical values for these velocities we obtained the resistance index (RI) or Pourcelot index. In a progressive way as the resistance index (RI) values were being obtained in each stage of this study they were also being checked in the cerebral arteries of healthy preterm infants and infants with intracranial hemorrhages. We also analyzed in a comparative method the values of the resistive index between the two groups of preterm infants observing their behaviour. The results obtained when

  8. Endoscopic Color Doppler Ultrasonographic Evaluation of Gastric Varices Secondary to Left-Sided Portal Hypertension

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    Takahiro Sato

    2014-06-01

    Full Text Available Gastric varices that arise secondary to the splenic vein occlusion can result in gastrointestinal hemorrhaging. Endoscopic color Doppler ultrasonography (ECDUS was performed in 16 patients with gastric varices secondary to splenic vein occlusion. This study retrospectively evaluated the role of ECDUS in the diagnosis of gastric varices secondary to splenic vein occlusion. Thirteen patients had co-existing pancreatic diseases: 8 with chronic pancreatitis, 4 with cancer of the pancreatic body or tail and 1 with severe acute pancreatitis. Of the remaining 3 patients, 1 had myeloproliferative disease, 1 had advanced gastric cancer, and the third had splenic vein occlusion due to an obscure cause. The endoscopic findings of gastric varices were: variceal form (F classified as enlarged tortuous (F2 in 12 cases and large, coil-shaped (F3 in 4 cases, and positive for erosion or red color sign of the variceal surface in 4 cases and negative in 12 cases. ECDUS color flow images of gastric variceal flow clearly depicted a round fundal region at the center, with varices expanding to the curvatura ventriculi major of the gastric body in all 16 cases. The velocities of F3 type gastric varices were significantly higher than those of the F2 type. The wall thickness of varices positive for erosion or red color sign was significantly less than the negative cases. I conclude that ECDUS color flow images of gastric variceal flow depicted specific findings of gastric varices secondary to splenic vein occlusion at the round fundal region at the center, with varices expanding to the curvatura ventriculi major of the gastric body.

  9. Color Doppler flow imaging diagnosis and treatment selection for erectile dysfunction

    Institute of Scientific and Technical Information of China (English)

    XUAN Xu-jun; ZHANG Cai-xia; HUANG Jian; Rong Lu; SUN Peng; LIU Hai-nan

    2011-01-01

    Background Targeted therapy for erectile dysfunction (ED) involves fewer screening tests and provides a variety of treatment choices for patients.Although the advantage of targeted therapy in diagnosis and therapy for ED has been recognized,the rational mode for oriented ED therapy has not been established.This study aimed to investigate targeted diagnosis and therapy for ED.Methods A total of 198 patients with ED were included in the study.After intracavernosal vasoactive agent injection was given,color Doppler flow imaging was performed and penile rigidity was classified as Schramek grade 5 (10 minutes duration),grade 4 (10 minutes duration),grade 3 and grade 2,defining four patient groups as group Ⅴ (143 cases),group Ⅳ (23 cases),group Ⅲ (18 cases),and group Ⅱ (14 cases).Appropriate and acceptable treatment was recommended to patients according to erection grade.Results In 198 patients with ED,the peak systolic velocity,end diastolic velocity,and resistance index in the cavemosal artery and dorsal artery and the flow velocity in the deep dorsal vein were not significantly different before injection (P >0.05).After injection,peak systolic velocity,end diastolic velocity,and resistance index in the cavernosal artery were different among the four groups (P<0.05).Between each two groups,the difference in resistance index was significant (P <0.05).The statistical differences in other indexes were not significant (P >0.05).Selective targeted therapy based on erection grade by color Doppler flow imaging improved the clinical satisfaction rate to 91.91% (182/198).Conclusions Based on the routine diagnosis of ED,blood flow indexes in the cavernosal artery are measured by color Doppler flow imaging following minimally invasive intercavernosal injection,which is combined with the Schramek grade of erection.The most appropriate and acceptable treatment is recommended according to the different groups,which improves the clinical satisfaction of treatment for

  10. Shear Wave Imaging of Breast Tissue by Color Doppler Shear Wave Elastography.

    Science.gov (United States)

    Yamakoshi, Yoshiki; Nakajima, Takahito; Kasahara, Toshihiro; Yamazaki, Mayuko; Koda, Ren; Sunaguchi, Naoki

    2017-02-01

    Shear wave elastography is a distinctive method to access the viscoelastic characteristic of the soft tissue that is difficult to obtain by other imaging modalities. This paper proposes a novel shear wave elastography [color Doppler shear wave imaging (CD SWI)] for breast tissue. Continuous shear wave is produced by a small lightweight actuator, which is attached to the tissue surface. Shear wave wavefront that propagates in tissue is reconstructed as a binary pattern that consists of zero and the maximum flow velocities on color flow image (CFI). Neither any modifications of the ultrasound color flow imaging instrument nor a high frame rate ultrasound imaging instrument is required to obtain the shear wave wavefront map. However, two conditions of shear wave displacement amplitude and shear wave frequency are needed to obtain the map. However, these conditions are not severe restrictions in breast imaging. This is because the minimum displacement amplitude is [Formula: see text] for an ultrasonic wave frequency of 12 MHz and the shear wave frequency is available from several frequencies suited for breast imaging. Fourier analysis along time axis suppresses clutter noise in CFI. A directional filter extracts shear wave, which propagates in the forward direction. Several maps, such as shear wave phase, velocity, and propagation maps, are reconstructed by CD SWI. The accuracy of shear wave velocity measurement is evaluated for homogeneous agar gel phantom by comparing with the acoustic radiation force impulse method. The experimental results for breast tissue are shown for a shear wave frequency of 296.6 Hz.

  11. Accuracy of color Doppler ultrasonography and magnetic resonance imaging in diagnosis of placenta accreta: A survey of 82 cases

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    Sedigheh Ayati

    2017-08-01

    Full Text Available Background: Placenta adhesive disorder (PAD is one of the most common causes of postpartum hemorrhage and peripartum hysterectomy. The main risk factors are placenta previa and prior uterine surgery such as cesarean section. Diagnosis of placenta adhesive disorders can lead to a decrease of maternal mortality and morbidities. Objective: The purpose of this study was to compare the accuracy of color Doppler ultrasonography and magnetic resonance imaging (MRI in the diagnosis of PADs. Materials and Methods: In this is cross-sectional study, Eighty-two pregnant women who were high risk for PAD underwent color Doppler ultrasound and MRI after 18 weeks of gestation. The sonographic and MRI findings were compared with the final pathologic or clinical findings. P<0.05 was considered statistically significant. Results: Mean maternal age was 31.42±4.2 years. The average gravidity was third pregnancy. 46% of patients had placenta previa. The history of the previous cesarean section was seen in 79 cases (96%. The diagnosis of placenta adhesive disorder was found in 17 cases (21%. Doppler sonography sensitivity was 87% and MRI sensitivity was 76% (p=0.37. Doppler sonography specificity was 63% and MRI specificity was 83% (p=0.01. Conclusion: Women with high-risk factors for PAD should undergo Doppler ultrasonography at first. When results on Doppler sonography are equivocal for PAD, MRI can be performed due to its high specificity

  12. PRELIMINARY APPLICATION OF COLOR DOPPLER FLOW IMAGING IN THE LOCALIZATION OF PARATHYROID ADENOMAS

    Institute of Scientific and Technical Information of China (English)

    张缙熙; 李建初

    1994-01-01

    From December 1991 to April 1993,we performed color Doppler flow imaging(CDFI) in 11 patients with parathyroid adenoma,and all cases were confirmed by toperation and pathology.In all the parathyroid adenomas,vessels were clearly revealed at the periphery of the upper pole and /or anterior periphery,where arterial signals were elicited.These arteries had branches into the adenomas and originated from inferior thyroid arteries on the same side in most cases.The internal flow signals were increased markedly as compared to normal thyroid,and high-velocity arterial signals were detected.Because of the thyroid's rich blood supply and landmark peripheral vessels.CDFI can distinguish parathyroid foci from thyroid nodules,lymph nodes,and normal tissues and provide a sound basis for the diagnosis of small parathyroid foci.

  13. CHARACTERISTICS OF TWO-DIMENSIONALAND COLOR DOPPLER ULTRASONOGRAPHY IN GRAVESI DISEASE

    Institute of Scientific and Technical Information of China (English)

    李建初; 张缙熙; 白耀; 程玉芳; 蔡胜; 孙宏宇

    1994-01-01

    Color Doppler flow imaging (CDFI) was performed in 24 patients with Graves′ disease and the resulths were compared with those from 8 patients with Hashimoto′s disease,6 patients with simple diffuse goiter,and 15 nor-mal volunteers.All cases were confirmed by clinical,laboratory tests or pathology.CDFI of Graves′ disease showed diffuse or localized hypoechoes within the thyroid glands,rich flow signals in the hypoechoes,accelerated flow velocity,and decreased resistance in the superior thyroid arteries(STA)and arteries within the glands.These appearances were characteristic as compared with the controls.The rate of flow in STA of Graves′ disease patients was 8 to 10 times higher than that in the normal volunteers.Tthis study demonstrates that CDFI is convenient and efficient as compared with isotope scan and some other laboratory tests,and can be widely used in the diagnosis of Graves′ disase.

  14. Color Doppler Ultrasound Study of Glomuvenous Malformations with its Clinical and Histologic Correlations.

    Science.gov (United States)

    Wortsman, X; Millard, F; Aranibar, L

    2017-07-03

    Glomuvenous malformations are hamartomatous lesions characterized by the presence of glomus cells in the vascular smooth muscle. We present the clinical and color Doppler ultrasound features of a series of 13 cases of histologically confirmed glomuvenous malformations. In all cases, the ultrasound study revealed moderately delimited superficial dermal and hypodermal pseudonodular structures of mixed echogenicity, with hypoechoic and heterogeneous areas and anechoic, pseudocystic tubular and lacunar zones. Arterial and venous vessels, mainly with a low flow (≤ 15cm/s) were observed in 85% of patients, but no arteriovenous shunts were present. Deeper structures were not affected and no phleboliths were detected. The clinical and ultrasound findings could facilitate diagnosis, surgical planning, and noninvasive follow-up in these tumors. Copyright © 2017 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.

  15. "Focal thyroid inferno" on color Doppler ultrasonography: a specific feature of focal Hashimoto's thyroiditis.

    Science.gov (United States)

    Fu, Xianshui; Guo, Limei; Zhang, Huabin; Ran, Weiqiang; Fu, Peng; Li, Zhiqiang; Chen, Wen; Jiang, Ling; Wang, Jinrui; Jia, Jianwen

    2012-11-01

    To evaluate color-Doppler features predictive of focal Hashimoto's thyroiditis. A total of 521 patients with 561 thyroid nodules that underwent surgeries or gun biopsies were included in this study. These nodules were divided into three groups: focal Hashimoto's thyroiditis (104 nodules in 101 patients), benignity other than focal Hashimoto's thyroiditis (73 nodules in 70 patients), and malignancy (358 nodules in 350 patients). On color Doppler sonography, four vascularity types were determined as: hypovascularity, marked internal flow, marked peripheral flow and focal thyroid inferno. The χ2 test was performed to seek the potential vascularity type with the predictive ability of certain thyroid pathology. Furthermore, the gray-scale features of each nodule were also studied. The vascularity type I (hypovascularity) was more often seen in focal Hashimoto's thyroiditis than other benignity and malignancy (46% vs. 20.5% and 19%). While the type II (marked internal flow) showed the opposite tendency (26.9% [focal Hashimoto's thyroiditis] vs. 45.2% [other benignity] and 52.8% [malignancy]). However, type III (marked peripheral flow) was unable to predict any thyroid pathology. Importantly, type IV (focal thyroid inferno) was exclusive to focal Hashimoto's thyroiditis. All 8 type IV nodules appeared to be solid, hypoechoic, and well-defined. Using "focal thyroid inferno" as an indicator of FHT, the diagnostic sensitivity and specificity were 7.7% and 100% respectively. The vascularity type of "focal thyroid inferno" is specific for focal Hashimoto thyroiditis. Recognition of this particular feature may avoid unnecessary interventional procedures for some solid hypoechoic thyroid nodules suspicious of malignancy. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  16. Color Doppler US of normal cerebral venous sinuses in neonates: a comparison with MR venography

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Elka [Hospital for Sick Children, Department of Diagnostic Imaging, Toronto (Canada); Children' s Hospital of Eastern Ontario (CHEO), Diagnostic Imaging Department, Ottawa (Canada); Daneman, Alan; Doria, Andrea S.; Blaser, Susan; Traubici, Jeffrey; Jarrin, Jose; Shroff, Manohar [Hospital for Sick Children, Department of Diagnostic Imaging, Toronto (Canada); Moineddin, Rahim [University of Toronto, Toronto (Canada); Moore, Aideen [Hospital for Sick Children, Department of Neonatology, Toronto (Canada)

    2012-09-15

    Color Doppler US (CDUS) has been used for evaluation of cerebral venous sinuses in neonates. However, there is very limited information available regarding the appearance of superficial and deep normal cerebral venous sinuses using CDUS and the specificity of the technique to rule out disease. To determine the specificity, inter-modality and inter-reader agreement of color Doppler US (CDUS). To evaluate normal cerebral venous sinuses in neonates in comparison to MR venography (MRV). Newborns undergoing a clinically indicated brain MRI were prospectively evaluated. All underwent a dedicated CDUS of the cerebral venous sinuses within 10 h (mean, 3.5 h, range, and 2-7.6 h) of the MRI study using a standard protocol. Fifty consecutive neonates participated in the study (30 males [60%]; 25-41 weeks old; mean, 37 weeks). The mean time interval between the date of birth and the CDUS study was 19.1 days. No cases showed evidence of thrombosis. Overall agreement for US reading was 97% (range, 82-100%), for MRV reading, 99% (range, 96-100%) and for intermodality, 100% (range, 96-100%). Excellent US-MRI agreement was noted for superior sagittal sinus, cerebral veins, straight sinus, torcular Herophili, sigmoid sinus, superior jugular veins (94-98%) and transverse sinuses (82-86%). In 10 cases (20%), MRV showed flow gaps whereas normal flow was demonstrated with US. Visualization of the inferior sagittal sinus was limited with both imaging techniques. Excellent reading agreement was noted for US, MRV and intermodality. CDUS is highly specific to rule out cerebral venous thrombosis in neonates and holds potential for clinical application as part of clinical-laboratory-imaging algorithms of pre/post-test probabilities of disease. (orig.)

  17. Evaluation of retrobulbar blood flow in patients with age-related cataract; color Doppler ultrasonographic findings

    Directory of Open Access Journals (Sweden)

    Mohammadi A

    2011-10-01

    Full Text Available Afshin Mohammadi1, Nilofar Khorasani2, Farzad Moloudi2, Mohammad Ghasemi-rad31Department of Radiology, Urmia University of Medical Sciences, Urmia, Iran; 2Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran; 3Genius and Talented Student Organization, Student Research Committee, Urmia University of Medical Sciences, Urmia, IranObjectives: Cataracts are the most common cause of blindness worldwide, with cataract surgery being the most common ophthalmic procedure. To our best knowledge, this is the first case-control study with a large number of participants to evaluate ocular blood flow in patients with cataracts.Materials and methods: Color Doppler and duplex sonography of the orbital vessels was performed in 224 eyes of 112 patients with known bilateral age-related cataracts and in 76 eyes of 38 healthy age- and sex-matched volunteers.Results: The mean ± (standard deviation [SD] of peak systolic velocity (PSV of the ophthalmic artery in patients with cataracts (34.59 ± 22.49 cm/second was significantly different to that in controls (52.11 ± 14.01 cm/second (P < 0.001. The mean ± SD PSV of the central retinal artery in patients with cataracts (15.31 ± 4.93 cm/second was significantly different to that in controls (9.61 ± 5.64 cm/second (P < 0.001.Conclusion: The mean PSV and resistive index (RI of the ophthalmic and central retinal arteries were lower in cataract patients when compared with normal subjects. This suggests that ocular hypoperfusion and changes in ocular hemodynamic may have a role in the formation of age-related cataracts.Keywords: retrobulbar blood flow, age-related, cataract, color Doppler ultrasonographic

  18. Therapeutic embolization of high-flow priapism 1 year follow up with color Doppler sonography

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Song, E-mail: zhaosong1984@QQ.com; Zhou, Jun, E-mail: 18740585@QQ.COM; Zhang, Yi-Fan, E-mail: XXXzyf2011@163.com; Zhang, Xiao-Long, E-mail: 87512377@QQ.COM; Long, Qing-Yun, E-mail: longqy2005@aliyun.com

    2013-12-01

    Objective: The aim of this study was to evaluate the use of color Doppler sonography (CDS) for the diagnosis of high-flow priapism and the treatment of cavernosal arterial fistula via super-selective arterial embolization. Methods and materials: We reviewed eight cases of high-flow priapism with cavernosal arterial fistula, from 2005 to 2011. All of the patients were diagnosed with a high-flow priapism and unilateral artery fistula via CDS. Conventional treatments for the eight cases were unsuccessful, and the patients were then treated through super-selective embolization. Diagnostic angiograms of the internal iliac artery showed a fistula on one side of the cavernosal artery, thus confirming the CDS images. We compared hemodynamic parameters including the peak systolic velocity, end diastolic velocity the resistance index of the pathological cavernosal artery and intracavernosal pressure in all patients before and after treatment using t-test. The efficacy of super-selective embolization and the erectile function of all patients were evaluated at a follow-up time of 12 months. Results: All patients were successfully treated and angiography showed that the fistulas disappeared after treatment. Additionally significant differences were found in the peak systolic velocity, the end diastolic velocity, the resistance index and intracavernosal pressure between pre-treatment and post-treatment (P < 0.05). At 5 days post-treatment, only one case relapses had occurred. Seven cases displayed restored erectile function and only one case exhibited erectile dysfunction. Conclusion: Color Doppler sonography is a highly sensitive method for the examination of high-flow priapism, and super-selective embolization is a safe and effective treatment for cavernosal arterial fistula.

  19. [Diagnosis of placenta previa accreta by two dimensional ultrasonography and color doppler in patients with cesarean section].

    Science.gov (United States)

    Shi, Huafang; Pi, Pixiang; Ding, Yiling

    2012-09-01

    To determine the accuracy of two dismensional sonography and color doppler in diagnosing placenta previa accreta in patients with previous cesarean section. Forty-one patients with previous cesarean sections were confirmed to have partial or total placenta previa in the current pregnancy and were given ultrasound examinations after the 28th week of gestation. Specific ultrasound features of the placenta and its interphase with the uterus and the bladder for placenta accreta were checked by two-dimensional ultrasonography and color Doppler. All the patients were traced until delivery. The golden standard in diagnosis was the intraoperative finding and the pathologic exam. Twenty-two patients had ultrasonographic evidence of placenta previa, 20 of which were later confirmed placenta previa accreta intraoperatively. Nineteen patients had no ultrasound evidence of placenta previa, and 1 of which was later confirmed placenta previa accreta. The sensitivity and specificity of antenatal ultrasound diagnosis of placenta previa accreta were 95.24% and 94.74% respectively. The most prominent feature to suggest placenta accreta in twodismensional sonography was the presence of multiple lakes that represented dilated vessels extending from the placenta through the myometrium. The most prominent color Doppler feature was the presence of interphase hypervascularity with abnormal vessels linking the placenta to the bladder, and the rate was 95.24%. Placenta previa accreta can be diagnosed made with a thorough two dimensional ultrasonographic and color Doppler examination in patients with previous cesarean scar and placenta previa.

  20. Utility of color Doppler transrectal ultrasound in the diagnosis of prostate cancer: a study of 101 cases; Utilidad de la ecografia transrectal con Doppler color en el diagnostico del cancer de prostata. Estudio de 101 casos

    Energy Technology Data Exchange (ETDEWEB)

    Morales, F. J.; Jornet, J.; Cervera, J.; Labrador, T. [Instituto Valenciano de Oncologia. Valencia (Spain)

    2001-07-01

    To determine the value of color Doppler ultrasound in the detection of prostate cancer. To relate asymmetries in vascularisation with the results of directed biopsy. Between May and November 2000, we studied 101 patients suspected of having prostate cancer. The selection criteria were a prostate-specific antigen level of over 3 ng/ml, suspicious digital rectal examination or both. The volume, capsule and internal architecture were assessed, focusing on nodules, suspicious hypoechoic areas and asymmetric color intensity. Sextant biopsies were carried out with an 18-gauge needle and samples were also taken of the areas of increased color intensity. (Author) 16 refs.

  1. Acute Effects of an Energy Drink on Myocardial Function Assessed by Conventional Echo-Doppler Analysis and by Speckle Tracking Echocardiography on Young Healthy Subjects

    Directory of Open Access Journals (Sweden)

    Daniele Menci

    2013-01-01

    Full Text Available Purpose. Previous studies have underlined the effects of the energy drinks containing caffeine end taurine on the cardiovascular system. The aim of this study was to determine acute changes on echocardiographic parameters assessed by conventional echo-Doppler analysis and by speckle tracking echocardiography after the consumption of an energy drink in a young healthy population. Methods. measurement of blood pressure, electrocardiographic, and echocardiographic examination were performed on 35 healthy subjects (mean age 25 ± 2 years, 16 men, at baseline and one hour after the consumption of a body surface area indexed amount of an energy drink (168 mL/m2 containing caffeine (0.03% and taurine (0.4%. Results. The analysis of left ventricular function showed a significant increase of mean relative values of MAPSE (+11%; , global longitudinal strain (+10%, , and left ventricular twisting (+22%, in respect to baseline. Also, right ventricular function parameters appeared significantly increased after energy drink consumption, as TAPSE (+15%, , global, and free wall right ventricular longitudinal strain (+8%, ; +5%, , resp.. Conclusion. In conclusion, the consumption of the ED in our population showed a significant increase of right and left ventricular myocardial function, suggesting a possible positive inotropic effect related to the substances contained therein.

  2. Acute effects of an energy drink on myocardial function assessed by conventional echo-Doppler analysis and by speckle tracking echocardiography on young healthy subjects.

    Science.gov (United States)

    Menci, Daniele; Righini, Francesca Maria; Cameli, Matteo; Lisi, Matteo; Benincasa, Susanna; Focardi, Marta; Mondillo, Sergio

    2013-01-01

    Purpose. Previous studies have underlined the effects of the energy drinks containing caffeine end taurine on the cardiovascular system. The aim of this study was to determine acute changes on echocardiographic parameters assessed by conventional echo-Doppler analysis and by speckle tracking echocardiography after the consumption of an energy drink in a young healthy population. Methods. measurement of blood pressure, electrocardiographic, and echocardiographic examination were performed on 35 healthy subjects (mean age 25 ± 2 years, 16 men), at baseline and one hour after the consumption of a body surface area indexed amount of an energy drink (168 mL/m(2)) containing caffeine (0.03%) and taurine (0.4%). Results. The analysis of left ventricular function showed a significant increase of mean relative values of MAPSE (+11%; P < 0.001), global longitudinal strain (+10%, P = 0.004), and left ventricular twisting (+22%, P < 0.0001) in respect to baseline. Also, right ventricular function parameters appeared significantly increased after energy drink consumption, as TAPSE (+15%, P < 0.0001), global, and free wall right ventricular longitudinal strain (+8%, P = 0.001; +5%, P = 0.1, resp.). Conclusion. In conclusion, the consumption of the ED in our population showed a significant increase of right and left ventricular myocardial function, suggesting a possible positive inotropic effect related to the substances contained therein.

  3. Usefulness of pulse-wave doppler tissue sampling and dobutamine stress echocardiography for identification of false positive inferior wall defects in SPECT

    Energy Technology Data Exchange (ETDEWEB)

    Altinmakas, S. [Maltepe Univ., Istanbul (Turkey) Medical Faculty; Dagdeviren, B.; Turkmen, M.; Gursurer, M.; Say, B.; Tezel, T.; Ersek, B.

    2000-03-01

    False positive inferior wall perfusion defects restrict the accuracy of SPECT in diagnosis of coronary artery disease (CAD). Pulse-Wave Tissue Doppler (PWTD) has been recently proposed to assess regional wall motion velocities. The objectives of this study were to evaluate the presence of CAD by using PWTD during dobutamine stress echocardiography (DSE) in patients with an inferior perfusion defect detected by SPECT and compare PWTD parameters of normal cases with patients who had inferior perfusion defect and CAD. Sixty-five patients (mean age 58{+-}8 years, 30 men) with a normal LV systolic function at rest according to echocardiographic evaluation with an inferior ischemia determined by SPECT and a control group (CG) of 34 normal cases (mean age 56{+-}7 years, 16 men) were included in this study. All patients underwent a standard DSE (up to 40 {mu}g/kg/min with additional atropine during sub-maximum heart rate responses). Pulse-wave Doppler tissue sampling of inferior wall was performed in the apical 2-chamber view at rest and stress. The coronary angiography was performed within 24 hours. The results were evaluated for the prediction of significant right coronary artery (RCA) and/or left circumflex coronary artery (CX) with narrowing ({>=}50% diameter stenosis, assessed by quantitative coronary angiography). It was observed that the peak stress mean E/A ratio was lower in patients with CAD when compared to patients without CAD (0.78{+-}0.2 versus 1.29{+-}0.11 p<0.0001). Also the peak stress E/A ratio of normal cases was significantly higher than patients who had CAD (1.19{+-}0.3 versus 0.78{+-}0.2 p<0.0001). When the cut off point for the E/A ratio was determined as 1, the sensitivity and specificity of dobutamine stress PWTD E/A were 89% and 86%, respectively. The peak stress E/A ratio was higher than 1 in all patients with a false positive perfusion defect. Systolic S velocity increase during DSE was significantly lower in patients with CAD (54%{+-}17 versus

  4. Does color Doppler sonography improve the clinical assessment of patients with acute scrotum?

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    Pepe, Pietro [Urology Unit, Cannizzaro Hospital, Catania (Italy)]. E-mail: piepepe@hotmail.com; Panella, Paolo [Urology Unit, Cannizzaro Hospital, Catania (Italy); Pennisi, Michele [Urology Unit, Cannizzaro Hospital, Catania (Italy); Aragona, Francesco [Urology Unit, Cannizzaro Hospital, Catania (Italy)

    2006-10-15

    Introduction and objectives: Our experience concerning the use of color Doppler sonography (CDS) in the differential diagnosis of acute scrotum is reported. Material and methods: From July 2000 to July 2005, 155 patients (median 17.2 years) were admitted with a diagnosis of acute scrotum (unilateral in 150 cases, bilateral in 5). Along with a careful anamnesis and the physical exam, all patients underwent a CDS study of the scrotal content using a sonograph GE Logiq 500 with a multifrequency (7.5-10 MHz) linear probe Small Part. The following CDS parameters were evaluated: intensity of the color-power signal on the testicular parenchyma and on the epididymis; systolic peak velocity (SPV) and telediastolic velocity (TDV) in correspondence of the gonadal hilum. Ultrasound and flowmetry parameters registered on the painful testis were compared with those registered on the healthy controlateral testis. The reduction/absence versus the increase of color-power signal in the parenchyma and the reduction/absence versus the increase of SPV and TDV in the centripetal intratesticular arteries were considered presumptive of testicular torsion versus orchiepididymitis. Results: The results only refer to the 150 patients (300 testis) with acute monolateral scrotum. The clinical picture and the physical exam suggested a torsion of the spermatic cord in 40 cases, a spontaneous de-torsion in 5, an orchiepididymitis in 80, a blunt scrotal trauma in 15, a bulky epididymal cyst or a hydrocele in 4 and a testicular pain of unknown etiology in the remaining 6 cases. Standard US was pathological in 95 patients (63.3%); CDS was pathologic in 70 patients and in 42 of them suggested a testicular torsion. Fifty-three patients underwent surgical exploration: among 42 patients with a presumptive diagnosis of testicular torsion, the diagnosis was confirmed in 22 cases, no anomaly was found in 16 cases and in 4 patients a torsion of testicular appendix was found. The rupture of the tunica

  5. Duplex Color Doppler Evaluation of Retinal Arterial Blood Flow in Type 2 Diabetic Subjects without Retinopathy

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    Mashah Binte Amin

    2014-09-01

    Full Text Available Background: Diabetic retinopathy is a vascular disorder affecting the microvasculature of retina. It is caused by changes in the blood vessels of retina. If untreated, it may lead to blindness which is usually preventable if retinopathy is diagnosed early and treated promptly. In ophthalmology, color Doppler imaging is a new method that enables us to assess the orbital vasculature. It allows for simultaneous two dimensional anatomical and Doppler evaluations of hemodynamic characteristics of retinal artery. Objective: To observe the difference between Doppler flow velocity indices (peak systolic velocity, end diastolic velocity and resistive index of retinal artery in type 2 diabetic subjects without retinopathy and those of normal controls. Materials and Methods: This case-control study was carried out in the department of Radiology and Imaging, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM in collaboration with Ophthalmology Outpatient Department, BIRDEM, Dhaka from July 2011 to June 2013. Eighty diabetic patients without retinopathy aged 27–68 years were enrolled as cases and age and sex matched 80 healthy subjects were selected as controls. Type 1 diabetic patients, type 2 diabetics with retinopathy, hypertensive and dyslipidemic subjects were excluded from the study. All the selected subjects underwent duplex Doppler ultrasonography of both eyes using 5 to 7.5 MHZ linear phase transducer. Duplex color Doppler findings including spectral analysis (PSV, EDV and RI were recorded. Unpaired t test was done to compare blood flow velocity indices of retinal artery in type 2 diabetic patients without retinopathy and that of healthy control subjects. p value <0.05 was considered as significant. Results: Majority (42.5% and 47.5% of subjects were in 4th decade of life in both groups with predominance of males. The mean duration of diabetes was 4.56 ± 2.1 years. Mean peak systolic

  6. Usefulness of color and pulsed Doppler's in the evaluation of surgical portosystemic shunts in pediatric patients; Utilidad del Doppler color y pulsado en la valoracion de los shunts portosistemicos quirurgicos en la edad pediatrica

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    Berrocal, T.; Prieto, C.; Cortes, P.; Rodriguez, R.; Pastor, I. [Hospital Universitario La Paz. Madrid (Spain)

    2003-07-01

    Portosystemic shunts are performed to relieve symptomatic portal hypertension symptomatic or removal pressure in hepatic vascularisation in patients with Budd-Chiari's syndrome. Most surgical portosystemic shunts can be suitably studied by means of ultrasound scan complemented by color and pulsed Dopplers, proved one understands the hemodynamics of the surgical procedures involved. This article demonstrates the usefulness and limitations of the ultrasound scan Duplex Doppler in the evaluation of portosystemic shunts performed on pediatric patients. Pulsed Doppler provides information regarding the nature and direction of blood flow. Color doppler is capable of directly revealing the shunt and, in most cases, permits the anastomosis to be located. The types of shunts that appear include proximal and distal spleno-renal, portocaval and mesocaval. Types of vascular connections are illustrated,s well as expected post-surgical blood flow direction in affected vessels. The ultrasound scanning technique is discussed, as well as the criteria for determining vascular permeability. Also highlighted are the advantages, limitations and diagnostic difficulties associated with the different forms of Doppler. (Author) 17 refs.

  7. The best of 2005 in echocardiography back from EuroEcho 9 – Florence, Italy

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    Sicari Rosa

    2006-02-01

    Full Text Available Abstract The ninth edition of the congress of the European Association of Echocardiography (EAE (former working group of Echocardiography held in Florence has just finished with a great success of participant attendance (2.842 and abstract submissions. Hot topics at EuroEcho 9 were: 1-live 3-dimensional echocardiography and surgical decision making; in pediatric cardiology; in resynchronization therapy 2- stress echocardiography beyond wall motion: from valve diseases to contractility to coronary flow reserve to diastolic function; 3- pulmonary cardiogenic interstitial thickening recognized by ultrasonic lung comets; 4- the "proven clinical inefficacy" of the many technologies sold as breakthrough: color kinesis, tissue characterization, strain rate, tissue Doppler, applied to stress echocardiography.

  8. Análisis de perforantes de la epigástrica inferior profunda con Angio TC 3D, Eco Doppler color y Doppler simple de ultrasonidos en colgajo DIEP: resultados preliminares Analysis of deep inferior epigastric perforating vessels with 3D CT angiography, color Doppler ultrasonography and Doppler in diep flaps: preliminary results

    Directory of Open Access Journals (Sweden)

    J. Castro García

    2008-09-01

    Full Text Available Nuestro objetivo es la validación de la Angio TC tridimensional como herramienta de planificación de los colgajos DIEP, comparándolo con el Doppler de ultrasonidos (US y eco Doppler color. Entre enero de 2006 y marzo de 2007 se realiza en 11 pacientes (13 DIEP un estudio comparativo prospectivo entre el Doppler de US, eco Doppler color y Angio TC con reconstrucción tridimensional, utilizando como dato de referencia los hallazgos intraoperatorios. En dicho proceso se localiza la mejor perforante que pueda servir como pedículo al colgajo DIEP en función de su localización, calibre, trayecto y relaciones anatómicas con respecto al músculo. La Angio TC con reconstrucción tridimensional, demuestra una especificidad del 100% (IC 95% 75.3-100 lo que le convierte en una prueba con un alto valor predictivo positivo y una excelente herramienta en la planificación de los colgajos de perforantes. El eco Doppler color determinó, que tan sólo en un 46,1% (IC 95% 19,2-74,9 de los pacientes, la perforante seleccionada por la prueba de forma preoperatoria, coincidía con la perforante elegida en quirófano. Con el Doppler de US, en un 30,8 % (IC 95% 9,1-61,4 de los colgajos estudiados, coincidía la mejor perforante escogida de forma preoperatoria, con los hallazgos obtenidos tras la disección del colgajo. En el presente estudio, la Angio TC tridimensional se ha mostrado como una técnica con una gran especificidad que proporciona valiosa información, sólo comparable con la disección anatómica y por delante de pruebas como el Doppler de ultrasonidos y el eco Doppler color.The aim of this report, is to validate the Angio-CT technique with three-dimentional reconstruction as a preoperative planning tool, after comparison with Doppler ultrasound and color- Duplex. Between january 2006 and march 2007, we studied 11 consecutive patients (13 DIEP in whom a prospective comparative followed up was performed comparing, the findings observed using

  9. Right ventricular function assessed by tissue Doppler echocardiography in older subjects without evidence for structural cardiac disease.

    Science.gov (United States)

    Laszlo, Roman; Baumann, Tobias; Konz, Hanna; Dallmeier, Dhayana; Klenk, Jochen; Denkinger, Michael; Koenig, Wolfgang; Rothenbacher, Dietrich; Steinacker, Juergen Michael

    2016-05-31

    The aim of our study was to obtain right ventricular (RV) tissue Doppler imaging (TDI) data in older subjects (n = 95, mean age: 74.5 ± 4.6 years) without evidence of hemodynamically significant structural heart disease recruited from a large population-based cohort (ActiFE-Ulm study). Our data indicate that aging may be accompanied by decreasing RV diastolic function and at most little alterations of RV systolic function. Mean values of all parameters were still within the guideline-suggested reference range with most of them closer to the abnormality thresholds. On an individual basis, respective thresholds were also exceeded in some subjects (almost all parameters subjects, presumed pathological measures might still be compatible with physiological age-related alterations. Therefore, they always have to be interpreted across the clinical context and in relation to other parameters of morphology and function obtained by other ultrasound imaging techniques (M-mode, B-mode, etc.) in the context of echocardiographic evaluation of the right heart.

  10. Role of color Doppler indices in predicting disease-free survival of breast cancer patients during neoadjuvant chemotherapy

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    Singh, Gurpreet, E-mail: guraiims@gmail.co [Medical Physics Unit, IRCH, AIIMS, New Delhi 110029 (India); Kumar, Pratik [Medical Physics Unit, IRCH, AIIMS, New Delhi 110029 (India); Parshad, Rajinder [Department of Surgery, AIIMS, New Delhi 110029 (India); Seith, Ashu; Thulkar, Sanjay [Department of Radiology, AIIMS, New Delhi 110029 (India); Hosten, Norbert [Department of Radiology, University of Greifswald, Greifswald 17489 (Germany)

    2010-08-15

    The aim of our study was to evaluate whether blood flow in locally advanced and inflammatory breast cancer before and after neoadjuvant chemotherapy using color Doppler ultrasonography can be used to monitor the response to therapy and identify possible correlations between survival and various Doppler indices. Fifty patients with breast cancer underwent Doppler evaluation of the tumor with determination of Doppler indices such as pulsatility index (PI), resistive index (RI), and peak systolic velocity (PSV). RI and PI decreased in 27 (54%) and 20 (40%) patients, respectively, and increased in 23 (46%) and 30 (60%) patients, respectively. Thirty (60%) patients showed a decrease in PSV and 20 (40%) patients an increase. Patients with an intratumoral blood flow velocity increase after chemotherapy had a greater likelihood of local recurrence and metastasis compared with patients in whom flow velocity decreased after chemotherapy. The study also confirmed a greater correlation between Doppler PSV and clinical assessment. Tumor flow velocity measured by Doppler ultrasound can be used as an independent marker of disease-free survival in patients with breast cancer.

  11. Double mitral valve orifice. Two-dimensional and Doppler echocardiographic diagnosis.

    Science.gov (United States)

    Solorio, S; Badui, E; Yáñez, M; Enciso, R; Rodríguez, L; Quintero, L R

    1996-01-01

    The purpose of this study was to demonstrate the usefulness of two-dimensional and Doppler echocardiography for diagnosing double mitral valve orifices (DMVO) in addition to identifying associated pathologies. We report five cases, three male and two female with an age ranging from 4 to 44 years old (mean age: 17 years), with the diagnosis of DMVO according to the following characteristics: using two-dimensional echocardiography on the short parasternal axis, both orifices were observed; apical in which the "seagull sign" was identified in both chambers, in addition to identifying the flows of each orifice by pulsed and codified color Doppler obtaining the corresponding gradients. With respect to the associated pathologies, all patients presented some type of malformation, such as subaortic ring, patent ductus arteriosus, coarctation of the aorta, bicuspid aorta and pulmonary stenosis. Using the color Doppler echocardiography allows an adequate anatomical and functional definition of DMVO.

  12. Ultrasonography and color Doppler of proximal gluteal enthesitis in juvenile idiopathic arthritis: a descriptive study

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    Thomsen Carsten

    2011-08-01

    Full Text Available Abstract Background The presence of enthesitis (insertional inflammation in patients with juvenile idiopathic arthritis (JIA is difficult to establish clinically and may influence classification and treatment of the disease. We used ultrasonography (US and color Doppler (CD imaging to detect enthesitis at the small and deep-seated proximal insertion of the gluteus medius fascia on the posterior iliac crest where clinical diagnosis is difficult. The findings in JIA patients were compared with those obtained in healthy controls and with the patients' MRI results. Methods Seventy-six proximal gluteus medius insertions were studied clinically (tenderness to palpation of the posterior iliac crest and by US and CD (echogenicity, thickness, hyperemia in 38 patients with JIA and in 38 healthy controls, respectively (median age 13 years, range 7-18 years. In addition, an additional MRI examination of the sacroiliac joints and iliac crests was performed in all patients. Results In patients with focal, palpable tenderness, US detected decreased echogenicity of the entheses in 53% of the iliac crests (bilateral in 37% and unilateral in 32%. US also revealed significantly thicker entheses in JIA patients compared to healthy controls (p Conclusions According to US, the gluteus medius insertion was thicker in JIA patients than in controls, and it was hypoechoic (enthesitis in about half of the patients. These findings may represent chronic, inactive disease in some of the patients, because there was only limited Doppler flow and MRI contrast enhancement. The present study indicates that US can be useful as an adjunct to clinical examination for improved assessment of enthesitis in JIA. This may influence disease classification, ambition to treat, and choice of treatment regimen.

  13. Comparison of brucella and non-specific epididymorchitis: gray scale and color Doppler ultrasonographic features

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    Ozturk, Adil [Department of Radiology, Harran University School of Medicine, Arastirma ve Uygulama Hastanesi, TR-63100 Sanliurfa (Turkey)]. E-mail: ozturka26@hotmail.com; Ozturk, Ebru [Department of Radiology, Harran University School of Medicine, Arastirma ve Uygulama Hastanesi, TR-63100 Sanliurfa (Turkey); Zeyrek, Fadile [Department of Microbiology, Harran University School of Medicine, Sanliurfa (Turkey); Onur, Kahraman [Department of Urology, SSK Sanliurfa Hastanesi, Sanliurfa (Turkey); Sirmatel, Ocal [Department of Radiology, Harran University School of Medicine, Arastirma ve Uygulama Hastanesi, TR-63100 Sanliurfa (Turkey); Kat, Nurcan [Department of Radiology, Harran University School of Medicine, Arastirma ve Uygulama Hastanesi, TR-63100 Sanliurfa (Turkey)

    2005-11-01

    Objective: The aim of this study is to find out if it is possible to differentiate between brucellar and non-specific epididymorchitis by comparing ultrasonography (US) and color Doppler ultrasonography (CDUS) findings. Material and methods: Fifty-six patients diagnosed to have epididymorchitis both clinically and ultrasonographically were included to study. All of the patients were investigated serologically for brucella. Twenty-eight of those patients were admitted brucella epididymorchitis because of high agglutinations titers for brucella. The other 28 patients were admitted non-specific epididymorchitis because of normal agglutinations titers for brucella. Testicular size, echogenicity, hydrocele, internal echoes and/or septations within hydrocele, and scrotal skin thickness of normal and involved testis were compared by ultrasonography. Besides, pick systolic velocity, end diastolic velocity, resistive index and pick systolic velocity ratio values were measured by bilateral testicular color Doppler ultrasonography in both groups. When the p-value is <0.05, the difference between groups is accepted as statistically significant. Results: Thickening of scrotal skin was seen in 17 of 28 patients with brucella epididymorchitis (BEPO) (67%) and in 25 of 28 patients with non-specific epididymorchitis (NEPO) (89.2%) (p < 0.01). There was no difference between groups regarding presence of hydrocele. However hydrocele seen in all patients was anechoic except for two patients (8.6%). Hydrocele seen in 18 of 22 patients with BEPO and hydrocele had internal echogenicity or septation (p < 0.001). Sizes of testes and epididymis were found to be increased in involved testis compared to normal testis. Testes of all patients with NEPO were homogenous with decreased echogenicity except for five patients (17.8%). However, 23 patients with BEPO (82%) found to have heterogenous testis (p < 0.001). Spectral measurements showed increased PSV and EDV values and decreased RI values in

  14. Diagnosis of Noncompaction of Ventricular Myocardium with Color Doppler Ultrasound%彩色多普勒超声诊断心肌致密化不全

    Institute of Scientific and Technical Information of China (English)

    张凌; 黄昌举

    2011-01-01

    of left ventricular, two cases were of right ventricular, three cases were of left and right.Two cases eventually underwent heart transplantation because of severe congestive heart failure.Gross and histological findings demonstrated prominent muscular trabeculations,with deep intratrabecular recesses into lesion heart.Serial section from the base of the ventricle toward the apex revealed gradually weaker myocardium.Noncompaction of ventricular myocardium showed a thin,compacted epicardial and an extremely thickened endocardium by fibrous tissue.Conclusions The Color Doppler echocardiography can be used as the first choice examination method for the diagnosis of noncompaction of ventricular myocardium.

  15. Assessment of the ability of myocardial contrast echocardiography with harmonic power Doppler imaging to identify perfusion abnormalities in patients with Kawasaki disease at rest and during dipyridamole stress.

    Science.gov (United States)

    Ishii, M; Himeno, W; Sawa, M; Iemura, M; Furui, J; Muta, H; Sugahara, Y; Egami, K; Akagi, T; Ishibashi, M; Kato, H

    2002-01-01

    The aim of our study was to assess the ability of myocardial contrast echocardiography (MCE) with harmonic power Doppler imaging (HPDI) to identify perfusion abnormalities in patients with Kawasaki disease at rest and during pharmacological stress imaging with dipyridamole. Results were compared with those of 99mTc-tetrofosmin single-photon emission computed tomography (SPECT) imaging as the clinical reference standard. MCE with HPDI was performed on 20 patients with a history of Kawasaki disease. Images were obtained at baseline and during dipyridamole infusion (0.56 mg x kg(-1)) in the apical two- and four-chamber views. Myocardial opacification suitable for the analysis was obtained in all patients. Nine patients with stenotic lesions had a reversible defect after dipyridamole infusion detected by both MCE with HPDI and SPECT, and 3 patients with a history of myocardial infarction had a partially or completely irreversible defect detected by both methods. Three patients with coronary aneurysm without stenotic lesion, 4 patients with regressed coronary aneurysm, and 2 patients with normal coronary artery in acute phase also had normal perfusion at rest and after pharmacological stress by both methods. A 96% concordance (kappa = 0.87) was obtained when comparing the respective segmental perfusion scores using the two methods at baseline, and an 86% concordance (kappa = 0.81) was obtained at postdipyridamole infusion. After combining baseline and postdipyridamole images, each segment was labeled as having normal perfusion, irreversible defects, or reversible defects. Using these classifications, concordance for the two methods was 92% (kappa = 0.87). MCE with HPDI is a safe and feasible method by which to detect asymptomatic ischemia due to severe stenotic lesion, and it may be an important addition to the modalities used to identify patients at risk for myocardial infarction as a complication of Kawasaki disease.

  16. Acute effect of oral flavonoid-rich dark chocolate intake on coronary circulation, as compared with non-flavonoid white chocolate, by transthoracic Doppler echocardiography in healthy adults.

    Science.gov (United States)

    Shiina, Yumi; Funabashi, Nobusada; Lee, Kwangho; Murayama, Taichi; Nakamura, Koki; Wakatsuki, Yu; Daimon, Masao; Komuro, Issei

    2009-01-24

    To assess the effects of the oral intake of flavonoid-rich dark chocolate on coronary circulation, we measured coronary flow velocity reserve (CFVR) by noninvasive transthoracic Doppler echocardiography (TTDE) in healthy adult subjects. The study was a randomized, single-blind design conducted for 2 weeks in 39 healthy men (mean age 29.7+/-3.9 years, range 23-40 years). Subjects were randomly assigned a daily intake of either flavonoid-rich dark chocolate (Meiji Black Chocolate 45 g, Meiji Seika kaisya Ltd, including cacao polyphenol 550 mg/day, 200 kcal) or non-flavonoid white chocolate (Meiji White Chocolate 35 g, Meiji Seika kaisya Ltd, including cacao polyphenol 0 mg/day, 140 kcal) as a control. CFVR was recorded by TTDE, and assessed before and after 2 weeks of intake. At the same time, we also assessed serum asymmetric dimethylarginine, 8-isoprostanes, and malondialdehyde-modified low-density lipoprotein (MDA-LDL) as markers of oxidative stress. Flavonoid-rich dark chocolate consumption significantly improved CFVR (3.38+/-0.49 before intake, 4.28+/-0.85 after intake; pchocolate consumption did not (3.28+/-0.49 before intake, 3.16+/-0.49 after intake; p=0.44). All predictor variables were used as dependent variables in a multiple regression model of the incremental change in CFVR after 2 weeks of chocolate intake. Intake of dark (but not white) chocolate, MDA-LDL, triglyceride (TG) and heart rate (HR) significantly influenced the change of CFVR after 2 weeks of intake (pchocolate intake, X1=intake of dark (but not white) chocolate, X2=MDA-LDL, X3=TG, X4=HR). Flavonoid-rich dark chocolate intake significantly improved coronary circulation in healthy adults, independent of changes in oxidative stress parameters, blood pressure and lipid profile, whereas non-flavonoid white chocolate had no such effects.

  17. In-vivo imaging of blood flow in human retinal vessels using color Doppler optical coherence tomography

    Science.gov (United States)

    Yazdanfar, Siavash; Rollins, Andrew M.; Izatt, Joseph A.

    1999-04-01

    Quantification of retinal blood flow may lead to a better understanding of the progression and treatment of several ocular disorders, including diabetic retinopathy, age- related macular degeneration, and glaucoma. Current techniques, such as fluorescein angiography and laser Doppler velocimetry are limited, failing to provide sufficient information to the clinician. Color Doppler optical coherence tomography (CDOCT) is a novel technique using coherent heterodyne detection for simultaneous cross- sectional imaging of tissue microstructure and blood flow. This technique is capable of high spatial and velocity resolution imaging in highly scattering media. We implemented CDOCT for retinal blood flow mapping in human subjects. No dilation of the pupil was necessary. CDOCT is demonstrated for determining bidirectional flow in sub- 100micrometers diameter vessels in the retina. Additionally, we calculated Doppler broadening using the variance of depth- resolved spectra to identify regions with large velocity gradients within the Xenopus heart. This technique may be useful in quantifying local tissue perfusion in highly vascular retinal tissue.

  18. Transesophageal echocardiography assessment of severe ostial left main coronary stenosis

    Science.gov (United States)

    Firstenberg, M. S.; Greenberg, N. L.; Lin, S. S.; Garcia, M. J.; Alexander, L. A.; Thomas, J. D.

    2000-01-01

    Doppler echocardiography is commonly used in the assessment of stenotic valvular orifices. We describe the application of transesophageal echocardiography for the detection of a critical ostial left main coronary stenosis. Because preoperative coronary angiography often is not routinely performed in young patients undergoing valve surgery, application of Doppler echocardiography can potentially prevent catastrophic complications, particularly in atypical cases.

  19. Assessment of parathyroid glands in hemodialysis patients by using color Doppler sonography.

    Science.gov (United States)

    Ozcan, Umit Aksoy; Oktay, Ilay

    2009-11-01

    The aim of this study was to assess the role of color and spectral Doppler ultrasound (CDU) in the evaluation of enlarged parathyroid glands in hemodialysis patients with secondary hyperparathyroidism. Fourteen hemodialysis patients with elevated intact parathyroid hormone (iPTH) levels were evaluated prospectively with CDU. The volume of each observed parathyroid gland and the spectral CDU data (velocities, resistance and pulsatility indices, systolic to diastolic ratio, and flow volume output (FVO)) were noted. The biochemical data (iPTH, calcium, phosphate levels), and CDU results were analyzed with the Spearman correlation test. Two patients were excluded, and 27 enlarged parathyroid glands were observed in 12 patients. The mean total volume of enlarged parathyroid glands per patient was 1.95 cm(3) (0.06-5.5 cm(3)). Arterial supply was demonstrated in 78% (21/27) of enlarged parathyroid glands. Mean total FVO of enlarged glands per patient was 238.5 ml/min (620-0 ml/min) and mean iPTH level was 1,477 pg/ml (643-3,132 pg/ml). The positive correlations of total volume (p = 0.022), iPTH (p = 0.024), and FVO (p = 0.022) were statistically significant. In secondary hyperparathyroidism, total volume of the visualized enlarged parathyroid glands and the total of FVOs per patient are positively correlated with iPTH levels which may help clinical management and follow-up of end-stage renal disease patients.

  20. COLOR DOPPLER ULTRASONOGRAPHY APPEARANCES OF RENAL VEIN THROMBOSIS AND ITS DIAGNOSTIC VALUE

    Institute of Scientific and Technical Information of China (English)

    Sheng Cai; Guang-xi Zhong; Jian-chu Li; Yu Xia; Hui-jun Li; Yu-xin Jiang

    2007-01-01

    Objective To evaluate color Doppler ultrasonography (CDU) appearances of renal vein thrombosis (RVT) and its diagnostic value.Methods Ten patients with RVT were analyzed retrospectively. Renal structure, distributions of intrarenal flow signals, echogenicity, and flow fullness in main renal veins were observed with CDU. Resistance index (RI) was recorded from the waveforms of segmental or interlobar renal artery.Results Ten kidneys in nine patients were confirmed to have thrombus within the main renal veins, and one patient was confirmed to have thrombus within the small intrarenal veins. The appearances of the main renal vein thrombosis included full of solid echogenicity or strip echogenicity and complete or partial filling defect within the main renal veins, and absent or a few intrarenal venous flow signals in 70% of kidneys involved. The appearances of intrarenal vein thrombosis included obscure renal structure and no venous flow signal within the involved part of the kidneys. Reverse diastolic flow in the intrarenal artery had only a sensitivity of 36% (4/11) ; in other 7 kidneys without intrarenal arterial reverse diastolic flow, increased RI (mean, 0.84; range, 0.74-0.96) was found.Conclusion CDU is helpful for rapid clinical diagnosis and follow-up of RVT, and therefore can be the first imaging modality of choice for RVT.

  1. MR imaging of multiple fibroadenoma in breast: comparison with color doppler images and histologic findings

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    Chung, Soo Young; Yang, Ik; Park, Hai Jung; Lee, Yul; Chung, Bong Wha; Ahn, Hye Kyung [Hallym Univ. College of Medicine, Seoul (Korea, Republic of)

    1997-10-01

    To understand the different signal intensities seen on contrast enhanced magnetic resonance imaging (MRI) in multiple fibroadenoma of the breast, and to compare these with color Doppler ultrasonographic (CDUS) and histologic findings. MRI (1.0 Tesla, TIWI, T2WI, 3D-gradient echo dynamic contrast enhancement study) findings of 24 histologically proven cases of fibroadenoma in five patients were evaluated and compared with the histologic components (myxoid, adenomatous, fibrous). In addition, vascular flow, as seen on CDUS and histologic section, was compared. The observed degree of signal intensity waw classified into three groups, as follows: negative, 8.3%, mild to moderate, 54.2%; marked, 37.5%. On histologic section, the greater the fibrotic component, the higher the intensity of MRI enhancement, the greater the glandular component, and the intensity. CDUS showed vascular flow in only one tumor larger than 3cm in diameter. Vascular patterns of tumors on CDUS were dots in mass and detouring pattern, but in this case and in strongly enhanced cases, tumor vascularity-as seen on histologic section-showed no significant increase. Different signal intensities seen on contrast enhanced MRI in multiple fibroadenoma of the breast may be related more to the amount of glandular and fibrotic component than to increased tumor vascularity.

  2. Clinical importance of color doppler ultrasonography in preoperative assessment of hemodialysis vascular access creation

    Directory of Open Access Journals (Sweden)

    Petrović Dejan

    2012-03-01

    Full Text Available Chronic kidney failure is characterized with progressive and ireversible diminishing of glomerular filtration rate. Arterio-venous fistula (AVF for hemodialysis should be created in patients with endogenous creatinine clearance ≤ 20 mL/min/1,73m2. Inner diameter of a. radialis ≥ 2.0 mm, inner diameter of v.cephalica ≥ 2.5 mm, flow velocity through the a.radialis - VmaxS ≥ 50 cm/s and flow through the a. radialis - Qa.radialis ≥ 40 mL/m intenable adequate maturing of distal radio-cephalic AVF. Diameter of v.cephalica ≥ 4.0 mmand blood flow Q AV ≥ 500 mL/min, four weeks after the AVF creation, indicate adequately matured AVF and possibility of puncturing it. Maximal blood flow velocity through AVF of 100-350 cm/s and blood flow of 500-1000 mL/min, are signs of good function of AVF and adequate hemodialysis. Color Doppler ultrasonography enables preoperative planning of AVF, early complication detection, choice of appropriate therapeutical procedure for complication treatment, estimation of maturation, prime time for puncture and AVF function, which all contribute to a significant morbidity decrease and better life quality in hemodialysis patients.

  3. Role of color Doppler flow imaging in applicable anatomy of spleen vessels

    Institute of Scientific and Technical Information of China (English)

    Wei-Li Xu; Suo-Lin Li; Yan Wang; Meng Li; Ai-Guo Niu

    2009-01-01

    AIM: To explore the role of color Doppler flow imaging (CDFI) in visualization of spleen vessels and to define its value for spleen micro-invasive operation. METHODS: A total of 36 patients requiring laparoscopic splenectomy (LS) for various hematopathies and autoimmune diseases were randomly selected from April 2005 to May 2008. Anatomic types of spleen pedicle, adjacent relations between spleen vessels and pancreas, diameters of spleen artery and vein were detected and recorded by preoperative CDFI. Different operative procedures were performed according to different anatomic frameworks. The parameters were recorded by telerecording during LS and compared with those by preoperative CDFI using Chi-square test. RESULTS: Two anatomic types of spleen pedicle and four different adjacent relations between spleen vessels and pancreas were detected by CDFI. The diameters of spleen artery and vein detected by CDFI were 0.46 ± 0.09 cm and 0.85 ± 0.35 cm, respectively. There was no statistical difference between the parameters recorded by CDFI and by telerecording (χ2 = 0.250, 0.677, P > 0.05). LS was successfully performed following the anatomic information provided by preoperative CDFI.CONCLUSION: Different anatomic frameworks of spleen vessels can be provided by preoperative CDFI,which instructs micro-invasive operation of spleen and increase the safety of operation.

  4. Evaluation of renal artery stenosis using color Doppler sonography in young patients with multiple renal arteries

    Institute of Scientific and Technical Information of China (English)

    QIN Wei; ZHANG Xin; YANG Min; ZHONG Xu-hui; ZHAO Ming-hui

    2011-01-01

    Background Some individuals have multiple renal arteries. Severe stenosis in one of the arteries may cause refractory hypertension. The detection of stenosis within one of the multiple renal arteries usually required invasive procedures, such as computed tomographic angiography (CTA) and magnetic resonance angiography (MRA). This study reported the application of color Doppler sonography (CDS) in the detection of severe stenosis in one of the multiple arteries.Methods Patients with multiple renal arteries and one of the arteries with severe stenosis were retrospectively studied. Peak systolic velocities (PSV) of renal arteries and the intrarenal CDS patterns were collected and compared. The diagnosis was confirmed by digital subtraction angiography (DSA).Results Four children with multiple renal arteries and one of the arteries with stenosis were investigated. They were admitted due to refractory hypertension. CDS screening identified two renal arteries in one kidney of each patient with one of the two renal arteries having stenosis >70%. The PSV of the stenosed arteries were much higher, and the intrarenal CDS patterns supplied by the stenosed arteries changed into T-P patterns.Conclusion Non-invasive CDS technology may be a useful method to identify severe stenosis in one of multiple renal arteries in young patients.

  5. Granulomatous Prostatitis: Gray-scale Transrectal Ultrasonography and Color Doppler Ultrasonography Findings

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Hyoung Jung; Lim, Joo Won; Lee, Dong Ho; Ko, Young Tae; Kim, Eui Jong [Kyung Hee University Medical Center, Seoul (Korea, Republic of)

    2007-12-15

    We report here three cases of granulomatous prostatitis. All cases were confirmed by a transrectal ultrasonography (TRUS)-guided core biopsy of the prostate. Two cases received intravesical BCG therapy for a bladder tumor, and one case had no known predisposing condition. Gray-scale TRUS showed low echoic nodules in the outer gland in all cases. Color Doppler ultrasonography (CDUS) showed several dot-like blood flows within the low echoic nodules in two cases and several dot-like blood flows and short linear blood flows within the low echoic nodules in one case. Gray-scale TRUS findings of granulomatous prostatitis are similar to findings of prostate cancer. On CDUS, several dot-like blood flows or short linear blood flows were noted within the low echoic nodules in patients with granulomatous prostatitis. If low echoic nodules with dot-like or short linear blood flows are noted in patients with genitourinary tract tuberculosis or previous BCG therapy, granulomatous prostatitis should be included in the differential diagnosis. However, a prostatic biopsy is required for a final diagnosis

  6. Comparison of pulsed wave and color Doppler myocardial velocity imaging in healthy dogs.

    Science.gov (United States)

    Wess, G; Killich, M; Hartmann, K

    2010-01-01

    Tissue velocity imaging (TVI) is increasingly used in small animal cardiology. Tissue velocity of the myocardial wall can be measured by pulsed wave (PW) or color Doppler (CD) imaging methods. Currently, the same reference ranges are used for PW TVI and CD TVI methods. However, if and how both methods correlate, and whether they can be used interchangeably, have not been assessed in small animals. To compare the results of PW TVI and CD TVI measurements. Seventy-one healthy dogs. Longitudinal myocardial velocity profiles were recorded from the 4-chamber left apical view. Peak maximal systolic (S), early (E), and late diastolic (A) velocities were measured off-line in a blinded fashion in the septal and lateral left ventricular wall by PW TVI and CD TVI. Differences between peak PW TVI and CD TVI waves were analyzed by a paired t-test. Regression analysis and Bland-Altman difference plots also were used to assess agreement between methods. There was a significant correlation between PW TVI and CD TVI (P Theses differences are clinically relevant. These methods should not be used interchangeably, and different reference ranges for PW TVI and CD TVI should be used.

  7. Role of Color Doppler Imaging in Early Diagnosis and Prediction of Progression in Glaucoma

    Directory of Open Access Journals (Sweden)

    Fatima Jimenez-Aragon

    2013-01-01

    Full Text Available This longitudinal and prospective study analyzes the ability of orbital blood flow measured by color Doppler imaging (CDI to predict glaucoma progression in patients with glaucoma risk factors. Patients with normal perimetry but having glaucoma risk factors and patients in the initial phase of glaucoma were prospectively included in the study and divided, after a five-year follow-up, into two groups: “Progression” and “No Progression” based on the changes in the Moorfields regression analysis (MRA classification of Heidelberg retina tomograph (HRT. An orbital CDI was performed in all patients and the parameters obtained were correlated with changes in HRT. A logistic discrimination function (LDF was calculated for ophthalmic artery (OA and central retinal artery (CRA parameters. Receiver operating characteristics curves (ROC were used to assess the usefulness of LDFs to predict glaucomatous progression. A total of 71 eyes were included. End-diastolic velocity, time-averaged velocity, and resistive index in the OA and CRA were significantly different (P<0.05 between the Progression and No Progression groups. The area under the ROC curves calculated for both LDFs was of 0.695 (OA and 0.624 (CRA. More studies are needed to evaluate the ability of CDI to perform early diagnosis and to predict progression in glaucoma in eyes.

  8. Diagnostic value of color Doppler ultrasonography and MDCT angiography in complications of hemodialysis fistulas and grafts

    Energy Technology Data Exchange (ETDEWEB)

    Cansu, Aysegul, E-mail: drcansu@gmail.com [Department of Radiology, Karadeniz Technical University, School of Medicine, Farabi Hospital, 61080 Trabzon (Turkey); Soyturk, Mehmet; Ozturk, Mehmet Halil; Kul, Sibel [Department of Radiology, Karadeniz Technical University, School of Medicine, Farabi Hospital, 61080 Trabzon (Turkey); Pulathan, Zerrin [Department of Cardiovascular Surgery, Karadeniz Technical University, School of Medicine, Farabi Hospital, 61080 Trabzon (Turkey); Dinc, Hasan [Department of Radiology, Karadeniz Technical University, School of Medicine, Farabi Hospital, 61080 Trabzon (Turkey)

    2013-09-15

    Purpose: The purpose of the study was to compare the diagnostic value of color Doppler ultrasonography (CDUS) and multidetector computed tomography (MDCT) angiography against that of digital subtraction angiography (DSA) or surgery in the evaluation of failing hemodialysis arteriovenous fistulas (AVFs). Materials and methods: CDUS and MDCT angiography were performed with 41 patients (24 men, 17 women; mean age 55.8) with dysfunctional hemodialysis fistulas. The presence of stenosis, thrombosis, aneurysm, pseudoaneurysm and seroma were recorded. The sensitivity, specificity, positive and negative predictive values (PPV and NPV) and accuracy of CDUS and MDCT angiography were calculated both individually and in combination for the detection of vascular segments with significant stenosis, thrombosis, aneurysms, pseudoaneurysms, perivascular complications and stenosis subgroups. Results: Sixty-four segmental lesions were diagnosed by DSA or surgery. Sensitivity, specificity, PPV, NPV and accuracy of CDUS for all vascular tree lesions were 85.9%, 99.2%, 96.4%, 96.7% and 94.5%, respectively. For MDCT angiography the figures were 96.8%, 99.6%, 98.4%, 99.2% and 98.5%, respectively. When both tests were used in combination, sensitivity, specificity, PPV, NPV and accuracy for all vascular tree lesions rose to 100%. Conclusion: Combined use of MDCT and CDUS for diagnosis of AVF dysfunctions is of equivalent value to surgery or DSA, a gold standard technique.

  9. CTA in the detection and quantification of vertebral artery pathologies: a correlation with color Doppler sonography

    Energy Technology Data Exchange (ETDEWEB)

    Puchner, Stefan; Rand, Thomas; Reiter, Markus; Lammer, Johannes; Bucek, Robert A. [Medical University Vienna, Department of Cardiovascular and Interventional Radiology, Vienna (Austria); Haumer, Markus; Minar, Erich [Medical University Vienna, Department of Angiology, Vienna (Austria)

    2007-08-15

    We evaluated the feasibility of multidetector CT angiography (MDCTA) in the examination of vertebral artery (VA) pathologies and correlated the results with those of color Doppler sonography (CDS). In this retrospective cohort analysis, we identified 65 patients with suspected cerebrovascular disease, who underwent MDCTA and CDS of the supraaortic vessels within a maximum period of 1 month. We evaluated the feasibility and image quality of MDCTA in this indication, compared the value of reformatted images and axial source images in the grading of stenoses and correlated these results with those of CDS. The image quality of the MDCTA examination was classified as good in 64 patients (98.5%) and as moderate in 1 patient (1.5%). Axial source images and reformatted images agreed perfectly in terms of stenosis detection and grading as well as the detection of hypoplastic VAs ({kappa} = 1). The correlation between MDCTA and CDS was moderate ({kappa} = 0.56) in terms of stenosis detection and quantification and poor ({kappa} = 0.35) in terms of detection of hypoplasia of the VA. MDCTA is a feasible method for the evaluation of VA pathologies providing a good image quality. Image reformatting does not add any diagnostic value to the interpretation of axial source images. The correlation between MDCTA and CDS is only moderate, reflecting the clinically important limitations of CDS in this indication. (orig.)

  10. Color Doppler velocity profile and contrast-enhanced ultrasonography in assessment of liver cirrhosis

    Institute of Scientific and Technical Information of China (English)

    Li-Wu Lin; Xue-Jun Duan; Xiao-Yan Wang; En-Sheng Xue; Yi-Mi He; Shang-Da Gao; Li-Yun Yu

    2008-01-01

    BACKGROUND:This study was designed to probe the clinical value in assessing the degree of liver cirrhosis by using the arrival time of contrast agent in the right portal vein in contrast-enhanced ultrasonography, as well as the velocity and lfow volume in the right portal vein using the color Doppler velocity proifle technique. METHODS:Twenty-eight patients with HBV post-hepatic cirrhosis were grouped into compensated (13 patients) and decompensated cirrhosis (15); 30 patients without hepatic cirrhosis served as controls. Written informed consent was obtained from each patient. All the patients with hepatic cirrhosis were pathologically conifrmed by percutaneous biopsy. SonoVue was injected to detect the arrival time in the right portal vein. The velocity and lfow volume in the right portal vein were measured. The value of each parameter was compared for correlation analysis. RESULTS: The arrival time in the right portal vein in the cirrhosis group was much longer than that in the control group (24.92±1.34 vs. 20.81±0.55 sec, respectively, P CONCLUSIONS:With the development of liver cirrhosis, the arrival time of contrast agent in the right portal vein is gradually prolonged, whereas the velocity and lfow volume in this vein decreases markedly, and there is a negative correlation between the results of the two methods.

  11. EVALUATION OF THE DIAGNOSTIC CRITERIA FOR THE LOCALIZATION OF ACQUIRED ARTERIOVENOUS FISTULAS BY COLOR DOPPLER FLOW IMAGING

    Institute of Scientific and Technical Information of China (English)

    李建初; 蔡胜; 姜玉新; 张缙熙; 王岩青

    2001-01-01

    Objective. To evaluate the diagnostic criteria for the localization of acquired arteriovenous fistulas (AVFs)by color Doppler flow imaging (CDFI) based on the features of their hemodynamic changes.Methods. The shape and hemodynamic changes of involved vessels which could be helpful to localize thesites of fistulas were studied according to the observation of 10 cases of acquired AVFs.Results. The s tes of the fistulas could be shown by two-dimensional ultrasonography and color flow imagingin 40% and 80% tases, respectively. In all cases, turbulent high-velocity flow was present at the sites of thefistulas, low resistant flow was present in the arteries proximal to the fistulas, and artery-like flow was detected inthe veins.Conclusion. C OFt was accurate for the localization of acquired AVFs, which were mainly localized by theirhemodynamic changes shown by pulse Doppler ultrasound.``

  12. On-line assessment of regional ventricular wall motion by transesophageal echocardiography with color kinesis during minimally invasive coronary artery bypass grafting.

    Science.gov (United States)

    Kotoh, K; Watanabe, G; Ueyama, K; Uozaki, M; Suzuki, M; Misaki, T; Wakasugi, M; Ito, Y

    1999-05-01

    Our objective was to determine the changes in regional ventricular wall motion during minimally invasive direct coronary artery bypass grafting by color kinesis using transesophageal echocardiography. Minimally invasive coronary artery bypass grafting was performed in 34 patients, during which transesophageal echocardiography was used. Thirteen patients had isolated disease of the left anterior descending artery. Regional ventricular wall motion was analyzed by color kinesis with the SONOS 2500 transesophageal echocardiograph (Hewlett-Packard Co, Andover, Mass). On-line assessment of regional wall motion was continued during the operation. Wall motion abnormalities during ischemia were present in 4 cases, left ventricular mid-anterior hypokinesis in 3 cases, and left ventricular apical-lateral hypokinesis in 1 case. In all cases, wall motion was maintained after bypass. In patients with total coronary occlusion, changes in wall motion did not occur during anastomosis. Color kinesis allowed us to evaluate the change in regional ventricular wall motion induced by myocardial ischemia during minimally invasive coronary artery bypass grafting both objectively and quantitatively.

  13. Color Doppler ultrasound evaluation of asphyxial neonatal left ventricular function and its correlation with target organ damage

    Institute of Scientific and Technical Information of China (English)

    Cheng-Cai Chen; Li-Zhen Li; Qi-Sheng Lu; Yan-Ling Lang

    2017-01-01

    Objective:To study the color Doppler ultrasound parameters of asphyxial neonatal left ventricular function and the correlation with target organ damage.Methods: Normal neonates, mildly asphyxial neonates and severely asphyxial neonates born in our hospital between January 2014 and December 2015 were selected as the control group (n = 46), mild asphyxia group (n= 37) and severe asphyxia group (n = 23) respectively. On the 1st day after birth, color Doppler ultrasound was used to evaluate left ventricular function, and serum was collected to determine myocardial tissue injury, brain tissue injury and brain tissue metabolism indexes. Results: Color Doppler ultrasound parameters cardiac output (CO), ejection fraction (EF) and left ventricular fraction shortening (FS) as well as serum folate and vitamin B12 content of mild asphyxia group and severe asphyxia group were significantly lower than those of control group (P<0.05) while serum creatine kinase isoenzyme (CK-MB), troponin I (cTnI), troponin T (cTnT), S100B, neuron-specific enolase (NSE), creatine kinase BB (CK-BB), glycogen phosphorylase BB (GPBB), and homocysteine (Hcy) content were significantly higher than those of control group (P<0.05); CO, FS and EF as well as serum folate and vitamin B12 content of severe asphyxia group were significantly lower than those of mild asphyxia group (P<0.05) while serum CK-MB, cTnT, cTnI, S100B, NSE, CK-BB, GPBB and Hcy content were significantly higher than those of mild asphyxia group (P<0.05).Conclusions:Color Doppler ultrasound can accurately assess asphyxial neonatal left ventricular function damage degree and is closely related to myocardial tissue injury and brain tissue injury degree.

  14. Color Doppler Imaging of the Appendix: Criteria to Improve Specificity for Appendicitis in the Borderline-Size Appendix.

    Science.gov (United States)

    Xu, Yingding; Jeffrey, R Brooke; Shin, Lewis K; DiMaio, Michael A; Olcott, Eric W

    2016-10-01

    To test the hypothesis that continuous intramural vascular signal measuring at least 3 mm on color Doppler imaging is highly specific for appendicitis in patients with diagnostically borderline-size appendices. Two blinded observers independently reviewed color Doppler images of the appendix in 94 consecutive patients who had undergone sonography for suspected appendicitis and whose appendices were of diagnostically borderline size (6-8 mm maximum outer diameter). Intramural vascular flow on color Doppler images was classified as absent, type 1 (only punctate and dispersed signal), or type 2 (continuous linear or curvilinear signal measuring at least 3.0 mm in long- or short-axis views). Histopathologic examination and clinical follow-up served as reference standards. Proportions were assessed by the exact binomial test. Of the 94 patients, 33 (35.1%) had type 1 flow (of whom 5 [15.2%] had appendicitis); 23 (24.5%) had type 2 flow (of whom 20 [87.0%] had appendicitis); and 38 (40.4%) had absent flow (of whom 10 [26.3%] had appendicitis). The sensitivity, specificity, and odds ratio of type 2 flow as an indicator of appendicitis were 57.1%, 94.9%, and 24.9 (Pappendicitis in noncompressible appendices of diagnostically borderline size (6-8 mm).

  15. COLOR DOPPLER EVALUA TION OF HEPATIC VESS ELS AND PORTAL VENOUS SYSTEM IN LIV ER DISEASES WITH PAT HOLOGICAL CPRRELATION

    Directory of Open Access Journals (Sweden)

    Sanjeev

    2015-10-01

    Full Text Available Color Doppler sonography is an important noninvasive procedure for detecting abnormalities in hepatic vasculature in various liver diseases. Ultrasound findings associated with portal hypertension include enlarged diameter of the portal vein, lack of respiratory variation in the portal vein or its tributaries, hepatofungal portal flow direction, decreased portal velocity or volume, and the presence of collaterals or varices. Not only portal hypertension but various other liver diseases are associated with abnormalities noted in hepatic vasculature. An abnormal liver texture and ascites are also commonly seen and are usually related to accompanying cirrhosis. PORTAL VEIN : The portal vein is seen in about 97% of normal patients; failure to visualize it can suggest the presence of pathology, such as thrombosis. No intraluminal echoes with frequent echogenic border. HEPATIC ARTERY: Proximal hepatic artery is best seen at celiac trunk while distal hepatic artery is seen at the level of main portal vein. On Doppler assessment low resistant waveform pattern is seen with systolic and diastolic component. IVC ( INFERIOR VENA CAVA : Normal IVC has Low level intra luminal echoes within the lumen and changes occur during respiration. On Doppler assessment continuous triphasic waveform with respiratory variation. HEPATIC VEIN: Color Doppler is a key tool, since the hepatic veins may be difficu lt to visualize with B - mode imaging alone when the liver is enlarged or cirrhotic . AIM : To evaluate the abnormalities of hepatic vessels and portal vein in various liver diseases and role of colour Doppler in portal and hepatic vessels various liver diseas e with histopathological correlation. MATERIAL AND METHOD : A prospective study and is conducted in Department of Radiodiagnosis, N.S.C.B. Medical College, Jabalpur M.P., over a period of one year ( 2011 - 2012. To evaluate the colour Doppler of hepatic vess els and portal venous system in liver disease with

  16. Hemodynamic analysis of esophageal varices in patients with liver cirrhosis using color Doppler ultrasound

    Institute of Scientific and Technical Information of China (English)

    Feng-Hua Li; Jing Hao; Jian-Guo Xia; Hong-Li Li; Hua Fang

    2005-01-01

    AIM: To study the portal hemodynamics and their relationship with the size of esophageal varices seen at endoscopy and to evaluate whether these Doppler ultrasound parameters might predict variceal bleeding in patients with liver cirrhosis and portal hypertension.METHODS: One hundred and twenty cirrhotic patients with esophageal varices but without any previous bleeding were enrolled in the prospective study. During a 2-year observation period, 52 patients who had at least one episode of acute esophageal variceal hemorrhage constituted the bleeding group, and the remaining 68 patients without any previous hemorrhage constituted the non-bleeding group. All patients underwent endoscopy before or after color Doppler-ultrasonic examination, and images were interpreted independently by two endoscopists. The control group consisted of 30 healthy subjects, matched to the patient group in age and gender. Measurements of diameter,flow direction and flow velocity in the left gastric vein (LGV) and the portal vein (PV) were done in all patients and controls using color Doppler unit. After baseline measurements, 30 min after oral administration of 75 g glucose in 225 mL, changes of the diameter, flow velocity and direction in the PV and LGV were examined in 60 patients with esophageal varices and 15 healthy controls.RESULTS: The PV and LGV were detected successfully in 115 (96%) and 105 (88%) of 120 cirrhotic patients,respectively, and in 27 (90%) and 21 (70%) of 30 healthy controls, respectively. Among the 120 cirrhotic patients,37 had F1, 59 had F2, and 24 had F3 grade varices. Compared with the healthy controls, cirrhotic group had a significantly lower velocity in the PV, a significantly greater diameter of the PV and LGV, and a higher velocity in the LGV. In the cirrhotic group, no difference in portal flow velocity and diameter were observed between patients with or without esophageal variceal bleeding (EVB). However, the diameter and blood flow velocity of the LGV were

  17. 4-D flow magnetic resonance imaging: blood flow quantification compared to 2-D phase-contrast magnetic resonance imaging and Doppler echocardiography

    Energy Technology Data Exchange (ETDEWEB)

    Gabbour, Maya [Ann and Robert H. Lurie Children' s Hospital of Chicago, Department of Medical Imaging 9, Chicago, IL (United States); Schnell, Susanne [Northwestern University Feinberg School of Medicine, Department of Radiology, Chicago, IL (United States); Jarvis, Kelly [Northwestern University, Department of Biomedical Engineering, McCormick School of Engineering, Evanston, IL (United States); Robinson, Joshua D. [Ann and Robert H. Lurie Children' s Hospital of Chicago, Department of Pediatrics, Division of Pediatric Cardiology, Chicago, IL (United States); Northwestern University Feinberg School of Medicine, Department of Pediatrics, Chicago, IL (United States); Markl, Michael [Northwestern University Feinberg School of Medicine, Department of Radiology, Chicago, IL (United States); Northwestern University, Department of Biomedical Engineering, McCormick School of Engineering, Evanston, IL (United States); Rigsby, Cynthia K. [Ann and Robert H. Lurie Children' s Hospital of Chicago, Department of Medical Imaging 9, Chicago, IL (United States); Northwestern University Feinberg School of Medicine, Department of Radiology, Chicago, IL (United States)

    2015-06-15

    Doppler echocardiography (echo) is the reference standard for blood flow velocity analysis, and two-dimensional (2-D) phase-contrast magnetic resonance imaging (MRI) is considered the reference standard for quantitative blood flow assessment. However, both clinical standard-of-care techniques are limited by 2-D acquisitions and single-direction velocity encoding and may make them inadequate to assess the complex three-dimensional hemodynamics seen in congenital heart disease. Four-dimensional flow MRI (4-D flow) enables qualitative and quantitative analysis of complex blood flow in the heart and great arteries. The objectives of this study are to compare 4-D flow with 2-D phase-contrast MRI for quantification of aortic and pulmonary flow and to evaluate the advantage of 4-D flow-based volumetric flow analysis compared to 2-D phase-contrast MRI and echo for peak velocity assessment in children and young adults. Two-dimensional phase-contrast MRI of the aortic root, main pulmonary artery (MPA), and right and left pulmonary arteries (RPA, LPA) and 4-D flow with volumetric coverage of the aorta and pulmonary arteries were performed in 50 patients (mean age: 13.1 ± 6.4 years). Four-dimensional flow analyses included calculation of net flow and regurgitant fraction with 4-D flow analysis planes similarly positioned to 2-D planes. In addition, 4-D flow volumetric assessment of aortic root/ascending aorta and MPA peak velocities was performed and compared to 2-D phase-contrast MRI and echo. Excellent correlation and agreement were found between 2-D phase-contrast MRI and 4-D flow for net flow (r = 0.97, P < 0.001) and excellent correlation with good agreement was found for regurgitant fraction (r = 0.88, P < 0.001) in all vessels. Two-dimensional phase-contrast MRI significantly underestimated aortic (P = 0.032) and MPA (P < 0.001) peak velocities compared to echo, while volumetric 4-D flow analysis resulted in higher (aortic: P = 0.001) or similar (MPA: P = 0.98) peak

  18. Cerebral vascular effects of loading dose of dexmedetomidine: A Transcranial Color Doppler study

    Directory of Open Access Journals (Sweden)

    Appavoo Arulvelan

    2016-01-01

    Full Text Available Background: Dexmedetomidine has been widely used in critical care settings because of its property of maintaining stable hemodynamics and inducing conscious sedation. The use of dexmedetomidine is in increasing trend particularly in patients with neurological disorders. Very few studies have focused on the cerebral hemodynamic effects of dexmedetomidine. This study is aimed to address this issue. Methods: Thirty patients without any intracranial pathology were included in this study. Middle cerebral artery flow velocity obtained from transcranial color Doppler was used to assess the cerebral hemodynamic indices. Mean flow velocity (mFV, pulsatility index (PI, cerebral vascular resistant index (CVRi, estimated cerebral perfusion pressure (eCPP, and zero flow pressure (ZFP were calculated bilaterally at baseline and after infusion of injection Dexmedetomidine 1 mcg/Kg over 10 min. Results: Twenty-six patients completed the study protocol. After administration of loading dose of dexmedetomidine, mFV and eCPP values were significantly decreased in both hemispheres (P < 0.05; PI, CVRi, and ZFP values showed significant increase (P < 0.05 after dexmedetomidine infusion. Conclusion: Increase in PI, CVRi, and ZFP suggests that there is a possibility of an increase in distal cerebral vascular resistance (CVR with loading dose of dexmedetomidine. Decrease in mFV and eCPP along with an increase in CVR may lead to a decrease in cerebral perfusion. This effect can be exaggerated in patients with preexisting neurological illness. Further studies are needed to evaluate the effect of dexmedetomidine on various other pathological conditions involving brain like traumatic brain injury and vascular malformations.

  19. Color Doppler ultrasound and gamma imaging of intratumorally injected 500 nm iron-silica nanoshells.

    Science.gov (United States)

    Liberman, Alexander; Wu, Zhe; Barback, Christopher V; Viveros, Robert; Blair, Sarah L; Ellies, Lesley G; Vera, David R; Mattrey, Robert F; Kummel, Andrew C; Trogler, William C

    2013-07-23

    Perfluoropentane gas filled iron-silica nanoshells have been developed as stationary ultrasound contrast agents for marking tumors to guide surgical resection. It is critical to establish their long-term imaging efficacy, as well as biodistribution. This work shows that 500 nm Fe-SiO2 nanoshells can be imaged by color Doppler ultrasound over the course of 10 days in Py8119 tumor bearing mice. The 500 nm nonbiodegradable SiO2 and biodegradable Fe-SiO2 nanoshells were functionalized with diethylenetriamine pentaacetic acid (DTPA) ligand and radiolabeled with (111)In(3+) for biodistribution studies in nu/nu mice. The majority of radioactivity was detected in the liver and kidneys following intravenous (IV) administration of nanoshells to healthy animals. By contrast, after nanoshells were injected intratumorally, most of the radioactivity remained at the injection site; however, some nanoshells escaped into circulation and were distributed similarly as those given intravenously. For intratumoral delivery of nanoshells and IV delivery to healthy animals, little difference was seen between the biodistribution of SiO2 and biodegradable Fe-SiO2 nanoshells. However, when nanoshells were administered IV to tumor bearing mice, a significant increase was observed in liver accumulation of SiO2 nanoshells relative to biodegradable Fe-SiO2 nanoshells. Both SiO2 and Fe-SiO2 nanoshells accumulate passively in proportion to tumor mass, during intravenous delivery of nanoshells. This is the first report of the biodistribution following intratumoral injection of any biodegradable silica particle, as well as the first report demonstrating the utility of DTPA-(111)In labeling for studying silica nanoparticle biodistributions.

  20. Adaptive clutter rejection for 3D color Doppler imaging: preliminary clinical study.

    Science.gov (United States)

    Yoo, Yang Mo; Sikdar, Siddhartha; Karadayi, Kerem; Kolokythas, Orpheus; Kim, Yongmin

    2008-08-01

    In three-dimensional (3D) ultrasound color Doppler imaging (CDI), effective rejection of flash artifacts caused by tissue motion (clutter) is important for improving sensitivity in visualizing blood flow in vessels. Since clutter characteristics can vary significantly during volume acquisition, a clutter rejection technique that can adapt to the underlying clutter conditions is desirable for 3D CDI. We have previously developed an adaptive clutter rejection (ACR) method, in which an optimum filter is dynamically selected from a set of predesigned clutter filters based on the measured clutter characteristics. In this article, we evaluated the ACR method with 3D in vivo data acquired from 37 kidney transplant patients clinically indicated for a duplex ultrasound examination. We compared ACR against a conventional clutter rejection method, down-mixing (DM), using a commonly-used flow signal-to-clutter ratio (SCR) and a new metric called fractional residual clutter area (FRCA). The ACR method was more effective in removing the flash artifacts while providing higher sensitivity in detecting blood flow in the arcuate arteries and veins in the parenchyma of transplanted kidneys. ACR provided 3.4 dB improvement in SCR over the DM method (11.4 +/- 1.6 dB versus 8.0 +/- 2.0 dB, p < 0.001) and had lower average FRCA values compared with the DM method (0.006 +/- 0.003 versus 0.036 +/- 0.022, p < 0.001) for all study subjects. These results indicate that the new ACR method is useful for removing nonstationary tissue motion while improving the image quality for visualizing 3D vascular structure in 3D CDI.

  1. Color Doppler Ultrasound in Diagnosis and Assessment of Carotid Body Tumors: Comparison with Computed Tomography Angiography.

    Science.gov (United States)

    Jin, Zhan-Qiang; He, Wen; Wu, Dong-Fang; Lin, Mei-Ying; Jiang, Hua-Tang

    2016-09-01

    A carotid body tumor (CBT) is a rare, non-chromaffin paraganglioma, and its diagnosis mainly depends on imaging modalities. The aim of this study was to investigate the ability of color Doppler ultrasound (CDU) in the diagnosis and assessment of CBT based on computed tomography (CT). We retrospectively reviewed the CDU and CT features of 49 consecutive CBTs and 23 schwannomas from 67 patients and compared these findings with surgical resection specimens. The mean size of CBT lesions on ultrasound scans and CT angiography (CTA) was 3.24 cm ± 0.82 cm (range, 1.6-5.2 cm) and 3.84 cm ± 1.08 cm (range, 1.8-6.8 cm), respectively, which had statistically significant difference (t = 9.815, p = 0.000). The vascularity of CBT lesions was richer than that of schwannoma lesions (p CDU in identifying Shamblin type I CBT lesions, while CTA technique was superior for CDU, identifying Shamblin type II and III CBT lesions. Accuracy, specificity and sensitivity of CDU in diagnosing CBTs were 87.5% (63 of 72), 82.6% (19 of 23) and 89.8% (44 of 49), respectively. Both accuracy and sensitivity of CTA in diagnosing CBTs were 100%. CDU can be useful for assessment of Shamblin's type and intra-lesional blood flow of CBTs before its metastases, while CT imaging can reveal the relationship between lesions and adjacent arteries, as well as the involvement of the skull base. CDU combined with CT imaging can be used as an optimal detection modality for the assessment and management of CBT.

  2. The role of the color doppler ultrasonography and computed tomography in estimation of portal hypertension

    Directory of Open Access Journals (Sweden)

    Nićiforović Dijana

    2016-01-01

    Full Text Available Introduction. Liver diseases with disturbances of hepatic and splanchnic circulation lead to the portal hypertension, with or without a portal vein thrombosis. Objective. This study was based on the testing of hypothesis that more data and more precise diagnosis in patients with disorders of portal circulation can be obtained by using color Doppler ultrasonography (CDU and computed tomography (CT with contrast. Methods. The study was conducted from February 2011 to May 2014 and it comprised 120 patients who were suspected to have portal hypertension or already had clinical confirmation of the portal hypertension, patients with hepatitis, and some patients with hematological diseases. The first group of 40 patients was examined by conventional ultrasonography and CDU, the second group by contrast CT, and the third group of patients was examined by both methods (CDU and contrast CT. After six months of adequate therapy, the patients had control examinations with the same diagnostic technique used during their first examination. Results. Retrospective analysis showed that CDU is more sensitive than CT in the assessment of presence and age of thrombi (CDU 93.9%; CT 86.1%. CT gives precise data in detection of portosystemic collaterals. Sensitivity of CT is 100% and its specificity is 67%. Cumulative sensitivity and specificity for most parameters were increased in patients with portal hypertension when both methods were applied. Conclusion. This study emphasizes the possibility of early and more accurate diagnosis achieved when combining two radiological techniques (CDU and contrast CT scan, which is not the case when these methods are used separately.

  3. Color Doppler Ultrasonography-Targeted Perforator Mapping and Angiosome-Based Flap Reconstruction.

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    Gunnarsson, Gudjon Leifur; Tei, Troels; Thomsen, Jørn Bo

    2016-10-01

    Knowledge about perforators and angiosomes has inspired new and innovative flap designs for reconstruction of defects throughout the body. The purpose of this article is to share our experience using color Doppler ultrasonography (CDU)-targeted perforator mapping and angiosome-based flap reconstruction throughout the body. The CDU was used to identify the largest and best-located perforator adjacent to the defect to target the reconstruction. The cutaneous or fasciocutaneous flaps were raised, mobilized, and designed according to the reconstructive needs as rotation, advancement, or turnover flaps. We performed 148 reconstructions in 130 patients. Eleven facial reconstructions, 118 reconstructions in the body, 7 in the upper limbs, and 12 in the lower limbs. The propeller flap was used in 135 of 148 (91%) cases followed by the turnover design in 10 (7%) and the V to Y flap in 3 (2%) cases. The flaps were raised on 1 perforator in 98 (67%), 2 perforators in 48 (33%), and 3 perforators in 2 (1%) flaps. The reconstructive goal was achieved in 143 of 148 reconstructions (97%). In 5 cases, surgical revision was needed. No flaps were totally lost indicating a patent pedicle in all cases. We had 10 (7%) cases of major complications and 22 (15%) minor complications. The CDU-targeted perforator mapping and angiosome-based flap reconstruction are simple to perform, and we recommended its use for freestyle perforator flap reconstruction. All perforators selected by CDU was identified during surgery and used for reconstruction. The safe boundaries of angiosomes remain to be established.

  4. Color doppler ultrasonography and multislice computer tomography angiography in carotid plaque detection and characterization

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    Vučaj-Ćirilović Viktorija

    2011-01-01

    Full Text Available Beckground/Aim. Cerebrovascular diseases are the third leading cause of mortality in the world, following malignant and cardiovascular diseases. Therefore, their timely and precise diagnostics is of great importance. The aim of this study was to compare duplex scan Color Doppler ultrasonography (CDU with multislice computed tomography angiography (MSCTA in detection of morphological and functional disorders at extracranial level of carotid arteries. Methods. The study included 75 patients with 150 carotid arteries examined in the period from January 2008 to April 2009. The patients were firstly examined by CDU, then MSCTA, followed by the surgery of extracranial segment of carotid arteries. In 10 patients, the obtained material was referred for histopathological (HP examination. We used both CDU and MSCT in the analysis of: plaque surface, plaque structure, degree of stenosis, and the presence of intraplaque hemorrhage. Results. The results obtained by CDU and MSCTA were first compared between themselves, and then to intraoperative findings. Retrospective analysis showed that MSCTA is more sensitive than CDU in assessment of plaque surface (for smooth plaques CDU 89% : MSCTA 97%; for plaques with irregular surface CDU 75% : MSCTA 87%; for ulcerations CDU 54% : MSCTA 87%. Regarding determination of plaque structure (mixed plaque CDU 66% : MSCTA 70%; correlation with HP findings CDU 94% : MSCTA 96% and localization (CDU 63% : MSCTA 65%, and in terms of sensitivity and specificity, both methods showed almost the same results. Also, there is no statistical difference between these two methods for the degree of stenosis (CDU 96% : MSCTA 98%. Conclusion. Atherosclerotic disease of extracranial part of carotid arteries primarily affects population of middle-aged and elderly, showing more associated risk factors. Sensitivity and specificity of CDU and MSCTA regarding plaque composition, the degree of stenosis and plaque localization are almost the same

  5. Normal reference values for vertebral artery flow volume by color Doppler sonography in Korean adults

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    Hong, Hyun Sook; Cha, Jang Gyu; Park, Seong Jin; Joh, Joon Hee; Park, Jai Soung; Kim, Dae Ho; Lee, Hae Kyung; Ahn, Hyun Cheol [Soonchunhyang University Bucheon Hospital, Bucheon (Korea, Republic of)

    2003-09-15

    Vertebrobasilar ischemia has been attributed to a reduction of net vertebral artery flow volume. This study was to establish the reference values for the flow volume of the vertebral artery using color Doppler sonography in the normal Korea adults. Thirty five normal Korea adults without any underlying disease including hypertension, hyperlipidemia, diabetes, heart disease, obesity (body mas index>30), or carotid artery stenosis was included. There were 17 males and 18 females, age ranged from 20 to 53 years (average=32.86 years). Flow velocities and vessel diameters were recorded in the intertransverse (V2) segment, usually at C5-6 level, bilaterally. The flow volume (Q) was calculated. (Q=time averaged mean velocity x cross sectional area of vessel) A lower Flow velocity and smaller vessel diameter were measured on the right side compared to those of the left side, resulting in a lower flow volume. The calculated flow volumes using the equation were 77.0 +- 39.7 ml/min for the right side and 127.6 +- 71.0 ml/min for the left side (p=0.0001) while the net vertebral artery flow volume was 204.6 +- 81.8 ml/min. Decrease in the vertebral artery flow volume was statistically significant with advanced age. (r=-0.36, p=0.032). Vertebral artery blood flow volume was 191.20 +- 59.19 ml/min in male, and 217.28 +- 98.67 ml/min in female (p=0.6). The normal range for the net vertebral artery flow volume defined by the 5th to 95th percentiles was between 110.06 and 364.1 ml/min. The normal range for the net vertebral artery flow volume was between 110.06 and 364.1 ml/min. Vertebral artery flow volume decreased with the increase of age. However, gender did not affect the blood flow volume.

  6. Intracardiac echocardiography.

    Science.gov (United States)

    Bruce, C J; Friedman, P A

    2002-10-01

    This article describes currently available intracardiac ultrasound (ICE) technology contrasting it with intravascular ultrasound (IVUS) highlighting their differences. Clinical applications in the electrophysiologic and cardiac catheterization laboratory are discussed and current limitations addressed. Intracardiac echocardiography (ICE) is possible because lower frequency transducers (in contrast to higher frequency IVUS devices) have been miniaturized and mounted onto catheters capable of percutaneous insertion into the heart. These lower frequency transducers are capable of enhanced tissue penetration, permitting high-resolution 2D "whole heart" imaging. Also, with the introduction of the newest phased array transducer, Doppler hemodynamic data in addition to high resolution imaging can also be obtained. ICE facilitates electrophysiologic procedures by guiding transseptal catheterization, enabling endocardial anatomy visualization and targeting of arrhythmogenic substrate, ensuring optimal ablation electrode/tissue contact and promptly diagnosing procedural complications. Promising non-electrophysiologic applications include guidance of percutaneous closure of septal defects, percutaneous mitral balloon valvuloplasty and complex cardiac biopsy. Current limitations include monoplanar imaging, narrow field of view, and relatively large size of the catheter. Intra-cardiac imaging is now a clinical tool and has the potential to play an important role in diagnostic and therapeutic interventional procedures. Further refinement and miniaturization of these transducers, through continued technological progress, will make way for primary operator controlled, integrated ultrasound-guided interventional devices.

  7. Absence of Doppler signal in transcranial color-coded ultrasonography may be confirmatory for brain death: A case report

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    Mehmet Akif Topçuoğlu

    2015-08-01

    Full Text Available Transcranial Doppler ultrasonography (TCD is a valuable tool for demonstrating cerebral circulatory arrest (CCA in the setting of brain death. Complete reversal of diastolic flow (to-and-fro flow and systolic spikes in bilateral terminal internal carotid arteries and vertebrobasilar circulation are considered as specific sonogram configurations supporting the diagnosis of CCA. Because of the possibility of sonic bone window impermeability, absence of any waveform in TCD is not confirmatory for CCA unless there is documentation of disappearance of a previously well detected signal by the same recording settings. Transcranial color-coded sonography (TCCS with B-mode imaging can reliably detect adequacy of bone windows with clarity contralateral skull and ipsilateral planum temporale visualization. Therefore, absence of detectable intracranial Doppler signal along with available ultrasound window in TCCS can confirm clinical diagnosis of brain death. We herein discuss this entity from the frame of a representative case.

  8. Quantitative analysis of aortic regurgitation: real-time 3-dimensional and 2-dimensional color Doppler echocardiographic method--a clinical and a chronic animal study

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    Shiota, Takahiro; Jones, Michael; Tsujino, Hiroyuki; Qin, Jian Xin; Zetts, Arthur D.; Greenberg, Neil L.; Cardon, Lisa A.; Panza, Julio A.; Thomas, James D.

    2002-01-01

    BACKGROUND: For evaluating patients with aortic regurgitation (AR), regurgitant volumes, left ventricular (LV) stroke volumes (SV), and absolute LV volumes are valuable indices. AIM: The aim of this study was to validate the combination of real-time 3-dimensional echocardiography (3DE) and semiautomated digital color Doppler cardiac flow measurement (ACM) for quantifying absolute LV volumes, LVSV, and AR volumes using an animal model of chronic AR and to investigate its clinical applicability. METHODS: In 8 sheep, a total of 26 hemodynamic states were obtained pharmacologically 20 weeks after the aortic valve noncoronary (n = 4) or right coronary (n = 4) leaflet was incised to produce AR. Reference standard LVSV and AR volume were determined using the electromagnetic flow method (EM). Simultaneous epicardial real-time 3DE studies were performed to obtain LV end-diastolic volumes (LVEDV), end-systolic volumes (LVESV), and LVSV by subtracting LVESV from LVEDV. Simultaneous ACM was performed to obtain LVSV and transmitral flows; AR volume was calculated by subtracting transmitral flow volume from LVSV. In a total of 19 patients with AR, real-time 3DE and ACM were used to obtain LVSVs and these were compared with each other. RESULTS: A strong relationship was found between LVSV derived from EM and those from the real-time 3DE (r = 0.93, P real-time 3DE and that from ACM was observed (r = 0.73, P real-time 3DE and ACM was found (r = 0.90, P real-time 3DE for quantifying LV volumes, LVSV, and AR volumes was validated by the chronic animal study and was shown to be clinically applicable.

  9. Color Doppler evaluation of the ocular arterial flow changes in chronic obstructive pulmonary disease

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    Ozer, Tulay [Department of Radiology, Karaelmas University, School of Medicine, Tip Fakueltesi, Radyoloji AD, 67600-Kozlu, Zonguldak (Turkey)]. E-mail: ozertulay@yahoo.com; Altin, Remzi [Department of Pulmonary Medicine, Karaelmas University, School of Medicine, Kozlu, Zonguldak (Turkey); Ugurbas, Suat Hayri [Department of Ophthalmology, Karaelmas University, School of Medicine, Kozlu, Zonguldak (Turkey); Ozer, Yetkin [Department of Anesthesiology and Reanimation, Karaelmas University, School of Medicine, Kozlu, Zonguldak (Turkey); Mahmutyazicioglu, Kamran [Department of Radiology, Karaelmas University, School of Medicine, Tip Fakueltesi, Radyoloji AD, 67600-Kozlu, Zonguldak (Turkey); Kart, Levent [Department of Pulmonary Medicine, Karaelmas University, School of Medicine, Kozlu, Zonguldak (Turkey)

    2006-01-15

    Purpose: To evaluate the hemodynamic changes in the extraocular orbital vessels of the patients with chronic obstructive pulmonary disease (COPD), using color Doppler ultrasonography (CDU) technique, and to compare the results with those of healthy control subjects. Methods: Forty-five patients with COPD and 17 healthy control subjects were included in this study. Patients with COPD were classified according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD). Fifteen patients of stage I COPD (mild airflow limitation), stage II COPD (worsening airflow limitation) or stage III COPD (severe airflow limitation) were enrolled into Group I, II and III, respectively. End tidal carbon dioxide (EtCO{sub 2}), peripheral oxygen saturation (SpO{sub 2}), pulse rate (PR) and respiratory rate (RR) were measured by using capnograph/pulse oximeter in all patients. Measurements were performed in only one randomly chosen eye of each participant. The peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistance index (RI) were measured in the ophthalmic artery (OA), central retinal artery (CRA), lateral short posterior ciliary artery (LPCA) and medial short posterior ciliary artery (MPCA), using CDU technique. Results: The PSV measurements of the OA were significantly higher in Groups II and III compared to control group (p < 0.01, p < 0.001, respectively). The RI values from OA and CRA were significantly higher in Group II and III than the control group (p < 0.05). The RI values of LPCA and MPCA were also significantly higher in Group II than the control subjects (p < 0.05). When RI values were compared, mean values of LPCA and MPCA were significantly lower in Group III than in Group II (p < 0.05). There were no significant differences between Group I and control patients about PSVs, EDVs and RI values of all arteries Statistically significant correlations were found for the EtCO{sub 2} with PSV (r = 0.53, p < 0.01) and EDV (r = 0.51, p < 0.01) of the

  10. Usefulness of combination of grey-scale and color Doppler ultrasound findings in the diagnosis of ulnar nerve entrapment syndrome

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    Mohammad Ebrahim Ghanei

    2015-01-01

    Full Text Available Background: Ulnar nerve entrapment (UNE has been diagnosed with clinical examination and electrodiagnostic studies. This study was designed to determine the value of a combination of grey-scale and color Doppler ultrasound findings in the diagnosis of patients with UNE. Materials and Methods: During May to August 2013 41 patients with UNE (proven by electrodiagnostic studies and 44 healthy volunteers were evaluated by ultrasound study. Three cross-sectional area (CSA of ulnar nerve around cubital fossa was determined and measured in both groups. The maximum and minimum diameter of ulnar nerve was measured for calculating flattening ratio index (FRI. Vascularity of ulnar nerve around cubital fossa was also examined in proper color Doppler setting. Results: The mean CSA of nerve at all proximal, middle and distal levels were greater in patients with UNE than in controls (P = 0.02, <0.001 and 0.34 respectively. A cut-off point of 10.5 mm 2 for CSA (in the level of the cubital fossa yielded a sensitivity and specificity of 92.7% and 93.2%, respectively. Mean FRI was 3.1 ± 0.6 in patients with UNE group and 1.4 ± 0.2 in the control group with a significant difference (P < 0.001. FRI with cutoff point 2.15 has been shown as an important parameter for the detection of UNE. The vascularity in UNE has a sensitivity and specificity of 66% and 93.2%, respectively, and has a higher probability of being positive in severe UNE. Conclusion: Combination of grey-scale and color Doppler ultrasound may provide valuable diagnostic criteria and severity assessment of UNE.

  11. The application of color Doppler flow imaging in the diagnosis and therapeutic effect evaluation of erectile dysfunction

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    Xu-Jun Xuan

    2016-01-01

    Full Text Available We aim to investigate the correlations between hemodynamic parameters, penile rigidity grading, and the therapeutic effects of phosphodiesterase type 5 inhibitors using color Doppler flow imaging after intracavernosal injection in patients with erectile dysfunction. This study involved 164 patients. After intracavernosal injection with a mixture of papaverine (60 mg, prostaglandin E 1 (10 mg, and lidocaine (2%, 0.5-1 ml, the penile vessels were assessed using color Doppler flow imaging. Penile rigidity was classified based on the Erection Hardness Score system as Grades 4, 3, 2 or 1 (corresponding to Schramek Grades V to II. Then, the patients were given oral sildenafil (50-100 mg and scored according to the International Index of Erectile Function (IIEF-5 questionnaire. The number of patients with penile rigidities of Schramek Grades II to V was 14, 18, 21, and 111, respectively. The IIEF-5 score was positively correlated with the refilling index of the penile cavernosal artery (r = 0.79, P< 0.05, the peak systolic velocity (r = 0.45, P< 0.05, and penile rigidity (r = 0.75, P< 0.05, and was negatively correlated with the end diastolic velocity (r = −0.74, P< 0.05. For patients with erectile dysfunction, both the IIEF-5 score after sildenafil administration, which is correlated with penile rigidity, and the hemodynamic parameters detected using color Doppler flow imaging may predict the effects of phosphodiesterase type 5 inhibitor treatment and could provide a reasonable model for the targeted-treatment of erectile dysfunction.

  12. Value of color Doppler ultrasound in diagnosis of portal hypertension liver cirrhosis merged with esophageal variceal bleeding

    Institute of Scientific and Technical Information of China (English)

    Hai-Rong Yang

    2016-01-01

    Objective:To explore the value of color Doppler ultrasound in the diagnosis of portal hypertension liver cirrhosis merged with esophageal variceal bleeding.Methods:The clinical materials of 30 patients with portal hypertension liver cirrhosis merged with esophageal varices who were admitted in our hospital from August, 2014 to August, 2015 were retrospectively analyzed. According to whether there was a history of hematemesis and melena or not before and 3 months after ultrasound examination, and whether was esophageal variceal bleeding or not confirming by the electronic gastroscopy, the patients were divided into the bleeding group (17 cases) and non-bleeding group (13 cases). The color Doppler ultrasonic diagnosis apparatus was used to detect the inner diameter and blood flow rate of splenic vein, portal vein, and left gastric vein. The blood flow volume of splenic vein, portal vein, and left gastric vein was calculated.Results:The inner diameter and blood flow volume of splenic vein in the bleeding group were significantly higher than those in the non-bleeding group, but the blood flow rate was significantly lower than that in the non-bleeding group (P0.05). The inner diameter of left gastric vein in the bleeding group was significantly higher than that in the non-bleeding group, but the blood flow rate was significantly lower that that in the non-bleeding group (P0.05).Conclusions:Color Doppler ultrasound can detect the inner diameter of splenic vein, portal vein, and left gastric vein, and the related hemodynamic indicators, particularly, the inner diameter, blood flow rate, and blood flow volume of splenic vein are effective in predicting the risk of esophageal variceal bleeding.

  13. Diagnostic impact of color Doppler ultrasound-guided core biopsy on fine-needle aspiration of anterior mediastinal masses.

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    Chen, Hung-Jen; Liao, Wei-Chih; Liang, Shinn-Jye; Li, Chia-Hsiang; Tu, Chih-Yen; Hsu, Wu-Huei

    2014-12-01

    Although lymphoma and thymoma are common etiologies of anterior mediastinal masses (AMMs), smaller percentages and numbers of patients with these diseases have been enrolled in previous ultrasound-guided biopsy studies. To date, there has been no study of color Doppler sonographic features to support the differentiation of AMMs. For this retrospective cohort study, a search of the database of the China Medical University Hospital using the clinical coding "ultrasound-guided biopsy" was conducted for the period December 2003 to February 2013. We selected patients diagnosed with AMMs (not cysts) using radiographic records. This search yielded a list of 80 cases. Real-time ultrasound-guided core needle biopsy (CNB) was performed in all but 5 patients without a sufficient safety range. In 89% (67/75) of these ultrasound-guided CNB cases, the diagnostic accuracy achieved subclassification. Fine-needle aspiration cytology achieved subclassification in only 10% of cases. On color Doppler sonography, 71% of lymphomas were characterized as "rich vascular with central/crisscross collocations" and 29% as "avascular or localized/scattered peripheral vessels." However, decreased proportions of "rich vascular with central/crisscross collocations" were found in lung cancer (4% [1/23], odds ratio = 0.018, 95% confidence interval: 0.002-0.154, p Fine-needle aspiration cytology itself cannot aid in the diagnosis. Color Doppler sonographic evaluation of AMMs followed by real-time CNB is a more efficient method. Copyright © 2014 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.

  14. Ekhokardiografi Endokardiosis Penyakit Katup Mitral Jantung Anjing (ECHOCARDIOGRAPHY OF ENDOCARDIOSIS MITRAL VALVE HEART DISEASE IN DOGS

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    Deni Noviana

    2013-08-01

    Full Text Available Endocardiosis is a disease commonly found in Pomeranian dog characterized by progressive myxomatousdegeneration of the atrio-ventricular valves especially in the mitral valve. The purpose of this study was todefine the diagnose and severeity of this disease on the Pomeranian by using brightness mode, motion mode,dan color flow Doppler echocardiography technique. Echocardiography was performed on 8 Pomeranianconsisting of 6 males and 2 females with age range of 2-14 years. Brightness mode echocardiography wasused to see the echotexture of endocardium, mitral valve, and the valve movement. The results showedendocardium thickening, along with chronic fibrosis and nodular thickening of the anterior and posteriormitral valve leaflet. Three out of seven cases showed prolapsed of the mitral valve. Motion modeechocardiography was performed in order to measure left ventricle internal dimension, myocardium thickness,fractional shortening, left atrial and aortic dimension. The results showed myocardium thickening, alongwith left atrial enlargement. Color flow Doppler echocardiography was used to confirm the mitral valveregurgitation. Three of seven cases showed the presence of regurgitation signed by turbulence color of theprolapsed mitral valve. Based on the degree of severity, scoring system used in this study, endocardiosis canbe divided into three types that are mild, moderate and severe.

  15. Contribution of spiral artery blood flow changes assessed by transvaginal color Doppler sonography for predicting endometrial pathologies

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    Suna Kabil Kucur

    2013-01-01

    Full Text Available ive: To investigate the diagnostic value of blood flow measurements in spiral artery by transvaginal color Doppler sonography (CDS in predicting endometrial pathologies.Methods: Ninety-seven patients presenting with abnormal uterine bleeding and requiring endometrial assessment were included in this prospective observational study. Endometrial thickness, structure and echogenicity were recorded. Pulsatility index (PI and resistive index (RI of the spiral artery were measured by transvaginal CDS. Endometrial sampling was performed for all subjects. Sonographic and hystopathologic findings were compared.Results: The histopathological diagnoses were as follows; 39 cases (40.2% endometrial polyp, 9 cases (9.3% endometrial hyperplasia, 10 cases (10.3 submucous myoma, 7 cases (7.2% endometrium cancer, and 32 cases (33% nonspecific findings. The spiral artery PI in endometrium cancer group was highly significantly lower than other groups (p<0.01. The spiral artery RI was also significantly lower in the patients with malignant histology (p<0.05. Conclusion: Endometrial pathologies are associated significantly with endometrial spiral artery Doppler changes.Key words: Spiral artery, Doppler ultrasonography, endometrium

  16. Pulsed-wave tissue Doppler and color tissue Doppler echocardiography: calibration with M-mode, agreement, and reproducibility in a clinical setting

    DEFF Research Database (Denmark)

    Olsen, Niels Thue; Jons, Christian; Fritz-Hansen, Thomas

    2009-01-01

    of the two methods in a routine clinical setting. METHODS: For Study A, the displacements of 63 basal myocardial segments from 13 patients were examined with M-mode and compared with the velocity-time integral of PWTD and CTD velocities. For Study B, the basal lateral segments from 58 patients were examined...... 2.29 +/- 1.82 cm/sec; P numerically smaller tissue velocities than PWTD, mostly due to an overestimation of true tissue motion by PWTD...

  17. Three-dimensional transesophageal echocardiography: Principles and clinical applications

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    Annette Vegas

    2016-01-01

    Full Text Available A basic understanding of evolving 3D technology enables the echocardiographer to master the new skills necessary to acquire, manipulate, and interpret 3D datasets. Single button activation of specific 3D imaging modes for both TEE and transthoracic echocardiography (TTE matrix array probes include (a live, (b zoom, (c full volume (FV, and (d color Doppler FV. Evaluation of regional LV wall motion by RT 3D TEE is based on a change in LV chamber subvolume over time from altered segmental myocardial contractility. Unlike standard 2D TEE, there is no direct measurement of myocardial thickening or displacement of individual segments.

  18. Effects of chronic severe pulmonary regurgitation and percutaneous valve repair on right ventricular geometry and contractility assessed by tissue Doppler echocardiography

    DEFF Research Database (Denmark)

    Kjaergaard, Jesper; Iversen, Kasper K; Vejlstrup, Niels G;

    2010-01-01

    Pulmonary regurgitation (PR) following repair of right ventricular (RV) outflow obstruction is related to slowly progressive RV dilatation and heart failure and will eventually require surgical intervention, but optimal timing of pulmonary valve replacement is challenging. Tissue Doppler based...

  19. Color Doppler-ultrasonography in oral squamous cell carcinoma: Making ultrasonography more meaningful

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    Rahul Gandhi

    2016-01-01

    Conclusions: The said Doppler indices were shown to be sensitive as well as specific for the diagnosis of malignant oral tumors. Although CD-USG cannot replace histopathological procedures, it plays a definite role as an adjunct to the clinical evaluation of OSCC cases.

  20. Comparison of fetal middle cerebral arteries, umbilical and uterin artery color Doppler ultrasound with blood gas analysis in pregnancy complicated by IUGR.

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    Fardiazar, Zahra; Atashkhouei, Simin; Yosefzad, Yousef; Goldust, Mohamad; Torab, Reza

    2013-01-01

    Fetal color Doppler is important for evaluation of hypoxia in intrauterine growth restriction (IUGR) fetus. In this study we compare fetal and maternal color Doppler with blood gas analysis to detect fetal acidosis. In this cross-sectional study we evaluated 100 hospitalized patients with IUGR for comparison of color Doppler results with arterial blood gas analysis. RESULTS of Doppler sonography of fetus middle cerebral arteries, umbilical and uterine artery and umbilical artery ABG were studied in these neonates. Mean maternal age was 28±7 years, mean gestational age was 31.79±2.59 weeks and mean growth restriction was 3±2 weeks. Resistance increasing was observed in right uterine arteries of 37 mothers. It was normal in 60 mothers. Resistance increasing was observed in left uterine arteries of 36 mothers and nuch was seen in four cases. PCO2, PO2, and pH mean were 48.41±9.50 mmHg, 26.00±12.34 mmHg, and 7.28±0.10 in the neonates respectively. In this study abnormal color Doppler in IUGR fetuses have no significant correlation with umbilical cord blood gas.

  1. Value of serum β-HCG, P, CA125, and color Doppler ultrasound in early diagnosis of ectopic pregnancy

    Institute of Scientific and Technical Information of China (English)

    Yan-Li Liu

    2016-01-01

    Objective:To explore the clinical value of serum β-HCG, P, CA125, and color Doppler ultrasound in the early diagnosis of ectopic pregnancy (EP). Methods:A total of 50 patients with EP who were admitted in our hospital from September, 2014 to September, 2015 were included in the study and served as the observation group, while 50 normal pregnant women were served as the control group. A volume of 5 mL of fasting elbow venous blood the day on admission in the two groups was extracted, and then was centrifuged for serum. The chemiluminescence immunoassay was used to detect the levels of serum β-HCG, P, and CA125. After 48h,β-HCG level was detected again. The vaginal color Doppler diasonograph was used to detect the changes of RI and PSV. The blood supply of LH was observed. Results:The levels of serumβ-HCG, P, and CA125 in the observation group were significantly lower than those in the control group (P<0.05). When β-HCG<2 000 IU/L, after 48 h, β-HCG level was doubled in 3 cases (6.0%) in the observation group, while in 49 cases (98.0%) in the control group, and the differences between the two groups were not statistically significant (P<0.05). RI in the observation group was significantly higher than that in the control group, while PSV was significantly lower than that in the control group (P<0.05). Blood supply in the observation group was in a half ring shape, accounting for 58.0%;in the control group was in a ring shape, accounting for 70.0%, and the difference was statistically significant (P<0.05). Conclusions:Determination of the levels of serumβ-HCG, P, and CA125 in the pregnant women, in combined with the vaginal color Doppler ultrasound detection of RI and PSV, can contribute to distinguish the normal intrauterine pregnancy with EP and prevent the misdiagnosis, which can provide an accurate reference value for the early diagnosis and timely treatment of EP, and can be used as an ideal method for the diagnosis of EP.

  2. Estimation of diastolic filling pressure with cardiac CT in comparison with echocardiography using tissue doppler imaging: Determination of optimal CT reconstruction parameters

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    Hwang, Ji Sun; Suh, Jon; Lee, Heon [Soonchunhyang University Hospital Bucheon, Bucheon (Korea, Republic of); Lee, Bora [Dept. of Biostatistics, Soonchunhyang University College of Medicine, Seoul (Korea, Republic of); Lee, Soo Jeong [Terarecon Korea, Seoul (Korea, Republic of); Jou, Sung Shick [Dept. of Radiology, Soonchunhyang University Hospital Cheonan, Cheonan (Korea, Republic of); Lim, Hyun Kyung [Dept. of Radiology, Soonchunhyang University Hospital Seoul, Seoul (Korea, Republic of)

    2017-08-01

    To determine the optimal CT image reconstruction parameters for the measurement of early transmitral peak velocity (E), early peak mitral septal tissue velocity (E′), and E / E′. Forty-six patients underwent simultaneous cardiac CT and echocardiography on the same day. Four CT datasets were reconstructed with a slice thickness/interval of 0.9/0.9 mm or 3/3 mm at 10 (10% RR-interval) or 20 (5% RR-interval) RR-intervals. The E was calculated by dividing the peak transmitral flow (mL/s) by the corresponding mitral valve area (cm{sup 2}). E′ was calculated from the changes in the left ventricular length per cardiac phase. E / E′ was then estimated and compared with that from echocardiography. For assessment of E / E′, CT and echocardiography were more strongly correlated (p < 0.05) with a slice thickness of 0.9 mm and 5% RR-interval (r = 0.77) than with 3 mm or 10% RR-interval. The diagnostic accuracy of predicting elevated filling pressure (E / E′ ≥ 13, n = 14) was better with a slice thickness of 0.9 mm and 5% RR-interval (87.0%) than with 0.9 mm and 10% RR-interval (71.7%) (p = 0.123) and significantly higher than that with a slice thickness of 3 mm with 5% (67.4%) and 10% RR-interval (63.0%), (p < 0.05), respectively. Data reconstruction with a slice thickness of 0.9 mm at 5% RR-interval is superior to that with a slice thickness of 3 mm or 10% RR-interval in terms of the correlation of E / E′ between CT and echocardiography. Thin slices and frequent sampling also allow for more accurate prediction of elevated filling pressure.

  3. Diagnostic value of color doppler ultrasonography in detecting stenosis and occlusion of central veins in patients with chronic kidney disease

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    Masoud Pezeshki Rad

    2015-01-01

    Full Text Available Venography is an invasive diagnostic test that uses contrast material that provides a picture of the condition of the veins. But, complications, including adverse effects on the kidney, do occur. On the other hand, with the current technological development, application of ultrasound in the diagnosis of obstructive diseases of the veins is gaining popularity, being non-invasive, easy to perform and cost-effective. The aim of this study was to evaluate the diagnostic value of Doppler sonography in the diagnosis of central vein stenosis. In this descriptive-analytical study, 41 hemodialysis patients who had been referred for 50 upper limb venographies to the radiology department of Imam Reza (AS were included. Patients with chronic kidney disease with a history of catheterization of the vein, jugular or subclavian, and who had established fistulas or synthetic vascular grafts were targeted. Central venous ultrasound was performed on both sides to evaluate stenosis or occlusion. Venography was performed by the radiologist the next day or the day before hemodialysis. Data on demographic characteristics, findings of clinical examination and findings of ultrasound as well as venography were recorded by using the SPSS software, Chi-square test and Spearman correlation, and Kappa agreement was calculated for sensitivity, specificity and predictive values. Twenty-three (56% patients were male subjects and 18 patients (44% were female. Twenty-three (56% patients of the study population were aged 60 years. The overall sensitivity, specificity and positive predictive value and negative predictive value of Doppler sonography in the proximal veins in hemodialysis patients compared with venography were, respectively, 80.9%, 79.3%, 73.9% and 85.1%. Color Doppler sonography, as a non-invasive method, could be a good alternative for venography in the assessment of the upper limb with central vein stenosis and occlusion.

  4. Diagnostic value of color doppler ultrasonography in detecting stenosis and occlusion of central veins in patients with chronic kidney disease.

    Science.gov (United States)

    Rad, Masoud Pezeshki; Kazemzadeh, Gholam Hosain; Ziaee, Masood; Azarkar, Ghodsieh

    2015-03-01

    Venography is an invasive diagnostic test that uses contrast material that provides a picture of the condition of the veins. But, complications, including adverse effects on the kidney, do occur. On the other hand, with the current technological development, application of ultrasound in the diagnosis of obstructive diseases of the veins is gaining popularity, being non-invasive, easy to perform and cost-effective. The aim of this study was to evaluate the diagnostic value of Doppler sonography in the diagnosis of central vein stenosis. In this descriptive-analytical study, 41 hemodialysis patients who had been referred for 50 upper limb venographies to the radiology department of Imam Reza (AS) were included. Patients with chronic kidney disease with a history of catheterization of the vein, jugular or subclavian, and who had established fistulas or synthetic vascular grafts were targeted. Central venous ultrasound was performed on both sides to evaluate stenosis or occlusion. Venography was performed by the radiologist the next day or the day before hemodialysis. Data on demographic characteristics, findings of clinical examination and findings of ultrasound as well as venography were recorded by using the SPSS software, Chi-square test and Spearman correlation, and Kappa agreement was calculated for sensitivity, specificity and predictive values. Twenty-three (56%) patients were male subjects and 18 patients (44%) were female. Twenty-three (56%) patients of the study population were aged 60 years. The overall sensitivity, specificity and positive predictive value and negative predictive value of Doppler sonography in the proximal veins in hemodialysis patients compared with venography were, respectively, 80.9%, 79.3%, 73.9% and 85.1%. Color Doppler sonography, as a non-invasive method, could be a good alternative for venography in the assessment of the upper limb with central vein stenosis and occlusion.

  5. High-flow-velocity and shear-rate imaging by use of color Doppler optical coherence tomography.

    Science.gov (United States)

    van Leeuwen, T G; Kulkarni, M D; Yazdanfar, S; Rollins, A M; Izatt, J A

    1999-11-15

    Color Doppler optical coherence tomography (CDOCT) is capable of precise velocity mapping in turbid media. Previous CDOCT systems based on the short-time Fourier transform have been limited to maximum flow velocities of the order of tens of millimeters per second. We describe a technique, based on interference signal demodulation at multiple frequencies, to extend the physiological relevance of CDOCT by increasing the dynamic range of measurable velocities to hundreds of millimeters per second. The physiologically important parameter of shear rate is also derived from CDOCT measurements. The measured flow-velocity profiles and shear-rate distributions correlate very well with theoretical predictions. The multiple demodulation technique, therefore, may be useful to monitor blood flow in vivo and to identify regions with high and low shear rates.

  6. Ultrahigh-velocity resolution imaging of the microcirculation in-vivo using color Doppler optical coherence tomography

    Science.gov (United States)

    Yazdanfar, Siavash; Rollins, Andrew M.; Izatt, Joseph A.

    2001-05-01

    Color Doppler optical coherence tomography (CDOCT) is a method for noninvasive cross-sectional imaging of blood flow in vivo. In previous implementations, velocity estimates were obtained by measuring the frequency shift of discrete depth-resolved backscatter spectra, resulting in a velocity resolution on the order of 1 mm/s. We present a novel processing method that detects Doppler shifts calculated across sequential axial scans, enabling ultrahigh velocity resolution (~1 micron/s) flow measurement in scattering media. This method of sequential scan processing was calibrated with a moving mirror mounted on a precision motorized translator. Latex microspheres suspended in deuterium oxide were used as a highly scattering test phantom. Laminar flow profiles down to ~15 micron/s centerline velocity (0.02 cc/hr) were observed with a sensitivity of 1.2 micron/s. Finally, vessels on the order of 10 microns in diameter were imaged in living human skin, with a relative frequency sensitivity less than 4 x 10-5. To our knowledge, these results are the lowest velocities ever measured with CDOCT.

  7. Comparison of color-Doppler and qualitative and quantitative strain-elastography for differentiation of thyroid nodules in daily practice.

    Science.gov (United States)

    Götzberger, Manuela; Krueger, Susanne; Gärtner, Roland; Reincke, Martin; Pichler, Matthias; Assmann, Gerald; Mussack, Thomas; Zimmermann, Michael; Gülberg, Veit

    2016-04-01

    Strain-elastography provides a new ultrasound-based method that can offer information about the stiffness of thyroid nodules as an indicator of malignancy. The aim of our study was to compare the utility of color-Doppler and strain-elastography in differentiating between benign and malignant nodules. 77 thyroid nodules (70 benign and 7 malignant) from 70 unselected patients (48 female/22 male, mean age 49.7±14.3 years) were evaluated with color-Doppler and elastography based on a five-scale elastogram score for qualitative elastography and strain ratio for quantitative elastography. As reference tissue we chose normal thyroid tissue [strain ratio a (SR a)] and cervical muscles [strain ratio b (SR b)]. The cytological or histological results were used as a reference standard. Diagnostic performances of qualitative and quantitative elastography were compared using ROC curves. Vascularization score 3 or 4 was associated with malignancy (p=0.024) as well as elastogram score 4 or 5 (p=0.070, n.s.s.). SR a was indicatively higher and SR b lower in the group of malignant nodules (p=0.065 and p=0.246, n.s.s.). The best cut-off points predicting malignancy were 3.32 for SR a (66.7% sensitivity, 83.3% specificity) and 0.10 for SR b (71.4% sensitivity, 67.1% specificity). In our study, the accuracy of elastography did not surpass other sonographic parameters in differentiating thyroid nodules. The technique can play a role as a supplementary parameter in assessment of malignancy to improve diagnostic efficacy. The best parameter is SR a, but SR b can serve as an alternative if SR a is not assessable.

  8. [Color Doppler monitoring the utero-placental-fetal circulation variety of normal pregnancy and intrauterine growth retardation].

    Science.gov (United States)

    Xu, J; Wen, L; Ma, T

    1998-04-01

    To study the utero-placental-fetal circulation (UPFC) in normal pregnancy and intrauterine growth retardation (IUGR) cases. Color doppler ultrasound was used to detect UPFC in 150 second and third trimester pregnant women, of which 89 cases were normal pregnancy and 58 cases were IUGR. 3 cases were IUGR with chronic renal failure. Hemodynamical value of the umbilical artery (UmA), umbilical vein (UmV) and uterine artery (UtA) were examined directly. The indices included time average velocity (TAV), pulsatility index (PI), resistance index (RI), systolic/diastolic (S/D) ratio, blood flow volume (Q). The maternal serum estriol (E3), human placental lactogen (HPL) and plasma thromboxane B2 (TXB2)/6-keto-PGF1 alpha (6-KP) were measured simultaneously. The result shows that in normal pregnancy group UPFC is abundant gradually with increasing gestational age. In IUGR group 92.53% of cases showed that TAV and Q of UmA, UmV markedly decreased and PI, RI and S/D ratio of UmA elevated at 20 weeks of gestation. There were significant difference between the two groups, maternal serum E3, HPL level in IUGR group were significantly lower than that of the normal pregnancy group, 6-KP level reduced, and TXB2/6-KP ratio significantly increased. Using color doppler ultrasound examining hemodynamical changes of UmA, UmV and UtA could observe UPFC function directly. It is one of the best method to early diagnose and predict the prognosis of IUGR.

  9. Lower limbs valvular insufficiency diagnosed by color-doppler US: variability in the results using the standing or semi-Fowler position and Valsalva maneuver or distal compression

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    Federico Guillermo Lubinus Badillo

    2007-05-01

    Full Text Available Objectives: To determine differences in diagnosis of valvular insufficiency by color doppler ultrasonography in standing or semi-Fowler position and Valsalva maneuver or distal compression. Methodology:98 patients with 1-3 degreee valvular insufficiency were studiedAll of thew were evaluated by doppler ultrasonography in boothpositions and maneuvers. Results: There were differences betweenthe different techniques. In upper segments, a higher frequency of reflux was found with semi-Fowler plus Valsalva´s maneuver; in intermediate segments there were similar reflux prevalences using both positions; and, in lower segments, there was more reflux using standing position plus Valsalva´s maneuver. Conclusion. Depending on the venous group to evaluate, it is necessary to adapt the evaluation technique used with Doppler ultrasound color test.

  10. [Varicose vein recurrence after surgery of the sapheno-femoral junction: color Doppler ultrasonography study].

    Science.gov (United States)

    Roscitano, Giuseppe; Mirenda, Francesco; Mandolfino, Tommaso; De Caridi, Giovanni; Stilo, Francesco; Benedetto, Filippo; Spinelli, Francesco

    2003-01-01

    The aim of this study was to evaluate the accuracy and sensitivity of colour Doppler ultrasonography for the diagnosis of postoperative recurrent varicose veins in patients submitted to surgical ligation of the saphenofemoral junction with a view to classifying the recurrences according to the causes. We studied 401 lower limbs in the orthostatic position with colour Doppler ultrasonography in 318 patients (64 M and 254 F) presenting postoperative varicose vein recurrence during the follow-up (12-60 months). We evaluated the type of reflux at the inguinal level under the Valsalva manoeuvre and divided them into 5 types. We observed an incomplete crossectomy (type 1) in 23.2% of the cases; an incontinent saphenofemoral junction, intact and in an anatomical site in 12.5% (type 2); a major tributary (double saphena) originating from the common femoral vein near to the crossectomy site in 10.2% (type 3); neovascularization in 9.7% (type 4) and the presence of a number of major tributaries from the veins of the perineal and pudendal region or from the abdominal parietal veins in 44.4% (type 5). In all cases it was possible to note and classify the type of recurrence. Colour Doppler ultrasonography is an accurate, reliable tool for the diagnosis and classification of postoperative varicose vein recurrences in patients submitted to surgical obliteration of the saphenofemoral junction. It is decisive in the preoperative evaluation and follow-up of patients. In our experience, more than one half of the cases of recurrence were not due to an error of surgical technique.

  11. Diagnosis of Pentalogy of Cantrell in the First Trimester Using Transvaginal Sonography and Color Doppler

    Science.gov (United States)

    Türkçapar, Ayşe Figen; Sargın Oruc, Ayla; Öksüzoglu, Aysegül; Danışman, Nuri

    2015-01-01

    We report the prenatal diagnosis of Cantrell syndrome in the first trimester. During a routine transabdominal ultrasonographic examination, a midline supraumbilical abdominal wall defect including herniated liver and ectopia cordis with a large omphalocele containing the intestines and cystic hygroma was incidentally identified at the 12th week of gestation. A transvaginal sonography examination revealed a severe lumbosacral scoliosis in addition to the inability to visualize the abdominal aorta which was indicative of a severe intracardiac defect. The parents opted for pregnancy to be terminated. In this case report, we discuss the complementary role of transvaginal sonography and Doppler imaging in the diagnosis of Cantrell syndrome in early pregnancy. PMID:25802780

  12. Diagnosis of Pentalogy of Cantrell in the First Trimester Using Transvaginal Sonography and Color Doppler

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    Ayşe Figen Türkçapar

    2015-01-01

    Full Text Available We report the prenatal diagnosis of Cantrell syndrome in the first trimester. During a routine transabdominal ultrasonographic examination, a midline supraumbilical abdominal wall defect including herniated liver and ectopia cordis with a large omphalocele containing the intestines and cystic hygroma was incidentally identified at the 12th week of gestation. A transvaginal sonography examination revealed a severe lumbosacral scoliosis in addition to the inability to visualize the abdominal aorta which was indicative of a severe intracardiac defect. The parents opted for pregnancy to be terminated. In this case report, we discuss the complementary role of transvaginal sonography and Doppler imaging in the diagnosis of Cantrell syndrome in early pregnancy.

  13. Quantitative analysis of aortic regurgitation: real-time 3-dimensional and 2-dimensional color Doppler echocardiographic method--a clinical and a chronic animal study

    Science.gov (United States)

    Shiota, Takahiro; Jones, Michael; Tsujino, Hiroyuki; Qin, Jian Xin; Zetts, Arthur D.; Greenberg, Neil L.; Cardon, Lisa A.; Panza, Julio A.; Thomas, James D.

    2002-01-01

    BACKGROUND: For evaluating patients with aortic regurgitation (AR), regurgitant volumes, left ventricular (LV) stroke volumes (SV), and absolute LV volumes are valuable indices. AIM: The aim of this study was to validate the combination of real-time 3-dimensional echocardiography (3DE) and semiautomated digital color Doppler cardiac flow measurement (ACM) for quantifying absolute LV volumes, LVSV, and AR volumes using an animal model of chronic AR and to investigate its clinical applicability. METHODS: In 8 sheep, a total of 26 hemodynamic states were obtained pharmacologically 20 weeks after the aortic valve noncoronary (n = 4) or right coronary (n = 4) leaflet was incised to produce AR. Reference standard LVSV and AR volume were determined using the electromagnetic flow method (EM). Simultaneous epicardial real-time 3DE studies were performed to obtain LV end-diastolic volumes (LVEDV), end-systolic volumes (LVESV), and LVSV by subtracting LVESV from LVEDV. Simultaneous ACM was performed to obtain LVSV and transmitral flows; AR volume was calculated by subtracting transmitral flow volume from LVSV. In a total of 19 patients with AR, real-time 3DE and ACM were used to obtain LVSVs and these were compared with each other. RESULTS: A strong relationship was found between LVSV derived from EM and those from the real-time 3DE (r = 0.93, P <.001, mean difference (3D - EM) = -1.0 +/- 9.8 mL). A good relationship between LVSV and AR volumes derived from EM and those by ACM was found (r = 0.88, P <.001). A good relationship between LVSV derived from real-time 3DE and that from ACM was observed (r = 0.73, P <.01, mean difference = 2.5 +/- 7.9 mL). In patients, a good relationship between LVSV obtained by real-time 3DE and ACM was found (r = 0.90, P <.001, mean difference = 0.6 +/- 9.8 mL). CONCLUSION: The combination of ACM and real-time 3DE for quantifying LV volumes, LVSV, and AR volumes was validated by the chronic animal study and was shown to be clinically applicable.

  14. [Non-puerperal mastitis in real time and color Doppler ultrasound].

    Science.gov (United States)

    Blohmer, J U; Bollmann, R; Chaoui, R; Kürten, A; Lau, H U

    1994-03-01

    Differential diagnosis distinguishing between nonpuerperal mastitis and inflammatory cancer of the breast is difficult, the conventional method being mammography. In our study, we present the typical findings gained by sonography of 16 patients with nonpuerperal mastitis. They do not differ significantly from those cases with breast cancer. From these 16 patients, 7 were additionally examined using Colour and Pulsed Wave Doppler Sonography. International literature offers little practical knowledge in this field. In the immediate surroundings of the inflammation, we were able to represent up to four arterial vessels per patient. The parameters of the flow velocity wave form of these vessels were compared to those of the vessels in the correspondent quadrant of the contralateral breast. In all cases, the maximum systolic and the minimum end diastolic velocities were higher than in the contralateral breast, giving evidence of an increased vascularity. In 6 cases, the pulsatility and resistance indices in the inflammatory vessels were lower because of a decreased peripheral resistance of the vessel. Under therapy with antibiotics or Bromocriptine, these parameters were equalized in both breasts. The model of nonpuerperal mastitis shows, that Colour and Pulsed Wave Doppler Sonography makes it possible to differentiate tumours of the breast on the basis of an analysis of their vascularity and the comparison with the parameters of the vessels in the contralateral breast. The effects of a pharmacological therapy on the vascularity of breast tumours can also be measured with this method.

  15. Ecocardiografia-doppler e parâmetros hemodinâmicos em cardiopatias congênitas com hiperfluxo pulmonar Ecocardiografia-doppler y parámetros hemodinámicos en cardiopatías congénitas con hiperflujo pulmonar Doppler echocardiography and hemodynamic parameters in congenital heart disease with increased pulmonary flow

    Directory of Open Access Journals (Sweden)

    Zilma Verçosa de Sá Ribeiro

    2010-05-01

    áficos relacionados al flujo sistólico pulmonar y sistémico y al flujo en la vena pulmonar fueron relacionados a datos hemodinámicos en 30 pacientes consecutivos con defectos septales cardíacos (edad entre 4 meses y 58 años, mediana 2,2 años; presión arterial pulmonar media entre 16 y 93 mmHg. RESULTADOS: Las variables integral velocidad-tiempo del flujo sistólico en la vía de salida del ventrículo derecho (VTIVSVD > 22 cm y del flujo en la vena pulmonar (VTIVP > 20 cm fueron predictivas de niveles RVP/RVS 27 cm y VTIVP > 24 cm, la especificidad fue superior a 0,90 y la razón de chances 2,29 y 4,47 respectivamente. La razón entre los flujos pulmonar y sistémico (Qp/Qs > 2,89 y > 4,0, estimaciones ecocardiográficas fue útil para la predicción de valores Qp/Qs > 3,0 por cateterismo (especificidad de 0,78 y 0,91, razón de chances 1,14 y 2,97, respectivamente. CONCLUSIÓN: En portadores de defectos septales cardíacos, la ecocardiografía-Doppler es capaz de identificar aquellos en situación de aumento de flujo y bajos niveles de resistencia vascular pulmonar.BACKGROUND: The prediction of pulmonary hemodynamic data from non-invasive assessment could exempt some patients with congenital cardiac septal defects from preoperative invasive assessment (catheterization. OBJECTIVE: To determine, in simultaneous assessment, whether data obtained from Doppler echocardiography could predict aspects of pulmonary hemodynamics in such patients. METHODS: Echocardiographic parameters related to systolic and systemic pulmonary flow and pulmonary venous flow were related to hemodynamic data in 30 consecutive patients with cardiac septal defects (aged 4 months to 58 years, median 2.2 years, mean pulmonary artery pressure between 16 and 93 mmHg. RESULTS: The velocity-time integrals of systolic flow in right ventricle outflow tract (VTI RVOT > 22 cm and pulmonary venous flow (VTI VP > 20 cm predicted PVR/SVR 27 cm and VTI PV > 24 cm values, the specificity was higher than 0.90 and odds

  16. Significance of phentolamine redosing during prostaglandin E1 penile color Doppler ultrasonography in diagnosis of vascular erectile dysfunction.

    Science.gov (United States)

    Arafa, Mohamed; Eid, Hazem; Shamloul, Rany

    2007-05-01

    Recently, it was reported that phentolamine redosing during penile duplex can abolish a false diagnosis of venous leakage in patients with impotence. The aim of this study is to identify any useful role of phentolamine redosing in diagnosis of venogenic impotence. Sixty-seven consecutive patients complaining of weak erection for at least 6 months were included in this study. Penile color Doppler ultrasound (CDU) was performed using a 7.5 MHz linear array transducer with a color flow mapping capability. Following intracavernous injection of 20 microg prostaglandin E1 (PGE1), all patients with persistent end diastolic velocity (EDV) >5 cm/sec with an erectile response of E3 or lower, 20 min after intracavernosal injection of PGE1, were asked to revisit our clinic for a second CDU, 2 weeks later. During initial CDU examination, all 67 patients experienced poor response to 20 microg PGE1 with their average peak systolic velocity (PSV) and EDV being 42.8 and 6.6 cm/sec, respectively. The second CDU examination had similar results to the first one. Addition of 2 mg phentolamine did not significantly change the PSV and EDV of cavernosal arteries in any of the 67 patients. In conclusion, addition of intracavernous phentolamine during PGE1 CDU examination carries no advantage over the use of PGE1 alone regarding cavernosal artery response in patients with suspected venogenic EDV.

  17. Effect of brimonidine on the retrobulbar circulation in glaucomatous patients: a color Doppler study

    OpenAIRE

    Maria Rosa Bet de Moraes Silva; Hamilton Almeida Rollo; Schellini, Silvana A.

    2001-01-01

    Objetivo: Avaliar o efeito do tartarato de brimonidina a 0,2% tópico, instilado de 12/12 horas, na circulação retrobulbar em pacientes portadores de glaucoma. Métodos: Foram estudados os 2 olhos de 16 pacientes portadores de glaucoma primário de ângulo aberto e glaucoma crônico de ângulo estreito com iridotomia. Usando o Doppler colorido foram avaliados: velocidade sistólica máxima, velocidade diastólica final e índice de resistência das artéria central da retina, artéria ciliar posterior cur...

  18. Significance of clearing differentiated thyroid carcinoma lymph node by high-frequency color Doppler ultrasonography.

    Science.gov (United States)

    Liu, Bing; Qin, Huadong; Zhang, Bin; Shi, Tiefeng; Li, Chuanle; Liu, Yao; Song, Meiyue

    2017-01-01

    We compared the clinical effects and prognosis of patients receiving lymph node dissection after surgical removal of the thyroid tissues and those not receiving it after the removal. A total of 80 patients diagnosed with differentiated thyroid carcinoma (DTC) by our hospital from March 2012 to March 2014 were successively included in the study. The cases were divided into the control group (n=36 cases) and observation group (n=44 cases), and the two groups underwent total or subtotal resection of the thyroid. In the control group, patients underwent preoperative high-frequency color ultrasonography, and the most suspicious lymph node was removed. In the observation group, patients underwent preoperative high-frequency color ultrasonography, and the surgeons cleared the lymph node of the widest range. Difference in clinical effects and prognosis of the two groups were compared. After nearly a year's follow-up observation, the tumor recurrence rate of the observation group was significantly lower than that of the control group and the survival rate of the observation group was significantly higher than that of the control group (P0.05). When comparing the data of lymphatic metastasis tested by preoperative high-frequency color ultrasonography with intraoperative diagnosed figures, sensitivity was 97.4%, specificity 33.3%, positive predictive value 90.2% and the negative predictive value 66.7%. In conclusion, removal of the lymph node for DTC patients having undergone thyroid tissue excision with preoperative high-frequency color ultrasonography can be beneficial to improve the effects along with reduction in the recurrence rate.

  19. Transesophageal echocardiography: Instrumentation and system controls

    Directory of Open Access Journals (Sweden)

    Mahesh Prabhu

    2012-01-01

    Full Text Available Transesophageal echocardiography (TEE is a semi-invasive, monitoring and diagnostic tool, which is used in the perioperative management of cardiac surgical and hemodynamically unstable patients. The low degree of invasiveness and the capacity to visualize and assimilate dynamic information that can change the course of the patient management is an important advantage of TEE. Although TEE is reliable, comprehensive, credible, and cost-effective, it must be performed by a trained echocardiographer who understands the indications and the potential complications of the procedure, and has the ability to achieve proper acquisition and interpretation of the echocardiographic data. Adequate knowledge of the physics of ultrasound and the TEE machine controls is imperative to optimize image quality, reduce artifacts, and prevent misinterpretation of diagnosis. Two-dimensional (2D and Motion (M mode imaging are used for obtaining anatomical information, while Doppler and Color Flow imaging are used for information on blood flow. 3D technology enables us to view the cardiac structures from different perspectives. Despite the recent advances of 3D TEE, a sharp, optimized 2D image is pivotal for the reconstruction. This article describes the relevant underlying physical principles of ultrasound and focuses on a systematic approach to instrumentation and use of controls in the practical use of transesophageal echocardiography.

  20. COMPLEX TRANSRECTAL US WITH COLOR FLOW MAPPING, DOPPLER SONOGRAPHY AND SONOELASTOGRAFIEY IN PROSTATE CANCER EVALUATION

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    А. I. Mukhomor

    2014-07-01

    Full Text Available Oncology statistics shows steady increase of prostate cancer, since early diagnosis and adequate treatment are crucial. Among prostate imaging modalities sonoelastography (SEG has a special value for identifying suspicious dense foci in prostate, however more studies are still required to establishing accuracy and specificity with different SEG techniques for updating the prostate cancer diagnostics protocol.The aim of study was to evaluate sonoelastography capabilities for ultrasound guided prostate biopsy, comparing with gray scale and Doppler modalities.512 consecutively selected patients were examined (mean age of 56 years, mean prostate volume was 54 cm3, the average PSA about 14.3 ng/ml. All patients underwent prostate cancer diagnostic algorithm, including direct rectal exam, PSA level, transrectal ultrasound (TRUS with Doppler and SEG identification of suspicious foci, mostly in peripheral zones, followed by 10-point biopsy guided by ultrasound. According to aim we assigned patients to 4 groups: group 1 (n = 327 underwent gray scale and Doppler US guided prostate biopsy; in patients of group 2 (n = 106 – additionally SEG was applied (3 patients of this group was also performed MRI and MRS of the prostate; in group 3 there were patients with high level of PSA and negative TRUS guided biopsy; group 4 – of 41 patiens with prostatectomy and biochemical recidive of prostate.Among 430 cases included to this study in 318 patients (74 % prostate adenocarcinoma was revealed, in 270 (63 % patients – benign hyperplasia (BH. In group 1 cancer was diagnosed in 236 (72.1 ± 2.4 % patients, in group 2 – in 84 (79.2 ± 3.8 %. 19 false negative and 6 false positive results were registered in SEG enchanced US guided prostate biopsy. Routine TRUS indicate lesions with mean sizes about 0.8 ± 0,21 sm in compare with 0,5 ± 0,08 sm which were diagnose by SEG. Locuses which were marked as benign byTRUS with SEG hade never conatained neoplastic cells

  1. New adaptive clutter rejection based on spectral analysis for ultrasound color Doppler imaging: phantom and in vivo abdominal study.

    Science.gov (United States)

    Geunyong Park; Sunmi Yeo; Jae Jin Lee; Changhan Yoon; Hyun-Woo Koh; Hyungjoon Lim; Youngtae Kim; Hwan Shim; Yangmo Yoo

    2014-01-01

    Effective rejection of time-varying clutter originating from slowly moving vessels and surrounding tissues is important for depicting hemodynamics in ultrasound color Doppler imaging (CDI). In this paper, a new adaptive clutter rejection method based on spectral analysis (ACR-SA) is presented for suppressing nonstationary clutter. In ACR-SA, tissue and flow characteristics are analyzed by singular value decomposition and tissue acceleration of backscattered Doppler signals to determine an appropriate clutter filter from a set of clutter filters. To evaluate the ACR-SA method, 20 frames of complex baseband data were acquired by a commercial ultrasound system equipped with a research package (Accuvix V10, Samsung Medison, Seoul, Korea) using a 3.5-MHz convex array probe by introducing tissue movements to the flow phantom (Gammex 1425 A LE, Gammex, Middleton, WI, USA). In addition, 20 frames of in vivo abdominal data from five volunteers were captured. From the phantom experiment, the ACR-SA method provided 2.43 dB (p SCR) compared to static (STA) and down-mixing (ACR-DM) methods. Similarly, it showed smaller values in fractional residual clutter area (FRCA) compared to the STA and ACR-DM methods (i.e., 2.3% versus 5.4% and 3.7%, respectively, ). The consistent improvements in SCR from the proposed ACR-SA method were obtained with the in vivo abdominal data (i.e., 4.97 dB and 3.39 dB over STA and ACR-DM, respectively). The ACR-SA method showed less than 1% FRCA values for all in vivo abdominal data. These results indicate that the proposed ACR-SA method can improve image quality in CDI by providing enhanced rejection of nonstationary clutter.

  2. Study of the Myocardial Contraction and Relaxation Velocities through Doppler Tissue Imaging Echocardiography: A New Alternative in the Assessment of the Segmental Ventricular Function

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    Silva Carlos Eduardo Suaide

    2002-01-01

    Full Text Available OBJECTIVE: Doppler tissue imaging (DTI enables the study of the velocity of contraction and relaxation of myocardial segments. We established standards for the peak velocity of the different myocardial segments of the left ventricle in systole and diastole, and correlated them with the electrocardiogram. METHODS: We studied 35 healthy individuals (27 were male with ages ranging from 12 to 59 years (32.9 ± 10.6. Systolic and diastolic peak velocities were assessed by Doppler tissue imaging in 12 segments of the left ventricle, establishing their mean values and the temporal correlation with the cardiac cycle. RESULTS: The means (and standard deviation of the peak velocities in the basal, medial, and apical regions (of the septal, anterior, lateral, and posterior left ventricle walls were respectively, in cm/s, 7.35(1.64, 5.26(1.88, and 3.33(1.58 in systole and 10.56(2.34, 7.92(2.37, and 3.98(1.64 in diastole. The mean time in which systolic peak velocity was recorded was 131.59ms (±19.12ms, and diastolic was 459.18ms (±18.13ms based on the peak of the R wave of the electrocardiogram. CONCLUSION: In healthy individuals, maximum left ventricle segment velocities decreased from the bases to the ventricular apex, with certain proportionality between contraction and relaxation (P<0.05. The use of Doppler tissue imaging may be very helpful in detecting early alterations in ventricular contraction and relaxation.

  3. High-frequency subharmonic pulsed-wave Doppler and color flow imaging of microbubble contrast agents.

    Science.gov (United States)

    Needles, A; Goertz, D E; Karshafian, R; Cherin, E; Brown, A S; Burns, P N; Foster, F S

    2008-07-01

    A recent study has shown the feasibility of subharmonic (SH) flow imaging at a transmit frequency of 20 MHz. This paper builds on these results by examining the performance of SH flow imaging as a function of transmit pressure. Further, we also investigate the feasibility of SH pulsed-wave Doppler (PWD) imaging. In vitro flow experiments were performed with a 1-mm-diameter wall-less vessel cryogel phantom using the ultrasound contrast agent Definity and an imaging frequency of 20 MHz. The phantom results show that there is an identifiable pressure range where accurate flow velocity and power estimates can be made with SH imaging at 10 MHz (SH10), above which velocity estimates are biased by radiation force effects and unstable bubble behavior, and below which velocity and power estimates are degraded by poor SNR. In vivo validation of SH PWD was performed in an arteriole of a rabbit ear, and blood velocity estimates compared well with fundamental (F20) mode PWD. The ability to suppress tissue signals using SH signals may enable the use of higher frame rates and improve sensitivity to microvascular flow or slow velocities near large vessel walls by reducing or eliminating the need for clutter filters.

  4. Congenital arterioportal fistulas: radiological treatment and color Doppler US follow-up

    Energy Technology Data Exchange (ETDEWEB)

    Teplisky, Dario; Tincani, Eliana Uruena; Lipsich, Jose; Sierre, Sergio [Department of Interventional Radiology, Pichincha 1890, Buenos Aires (Argentina)

    2012-11-15

    Congenital intrahepatic arterioportal fistulas (APFs) are a rare cause of portal hypertension in children. Doppler US is a useful diagnostic imaging modality. Transarterial embolization is a minimally invasive and effective therapy allowing occlusion of the fistula and restoration of liver hemodynamics. To describe the clinical and radiologic findings, percutaneous treatment and role of D-US in the postembolization follow-up of children with APF. Between 2002 and 2011, four children with APF were treated. Initial diagnosis and follow-up was performed with D-US and confirmed by arteriography, followed by endovascular embolization in all patients. D-US demonstrated abnormal arterioportal communications in all patients. Six endovascular procedures were performed in these four children. In two children, no residual fistula was seen on D-US after the first procedure and symptoms resolved. In the other two children, D-US demonstrated residual flow through the fistula, with resolution of pathological D-US findings and symptoms after the second endovascular procedure. All four children were successfully treated and asymptomatic at the end of follow-up. The mean follow-up was 24 months. Interventional radiology has a key role in the treatment of congenital APF. D-US is a noninvasive and effective tool for the diagnosis and follow-up of these patients. (orig.)

  5. Primary chronic venous insufficiency of the lower extremities: preoperative color duplex Doppler ultrasound study; Insuficiencia venosa cronica primaria de los miembros inferiores. Valoracion prequirurgica con ecografia Doppler duplex color

    Energy Technology Data Exchange (ETDEWEB)

    Selfa, S.; Diago, T.; Ricart, M.; Chulia, R.; Martin, F. [Hospital Lluis Xativa. Valencia (Spain)

    2000-07-01

    To asses the role of color duplex Doppler ultrasound (CDU) in the preoperative study of patients with varicose veins in lower extremities. We employed CDU to examine varicose veins in 342 lower limbs, assessing reflux in saphenous veins (SV), deep venous system (DVS) and perforating veins (PV). We analyzed the relationship between the anatomical extent of the reflux and the clinical findings. Insufficiency of the superficial venous system alone was uncommon, occurring in only 10.8% of the limbs examined. Reflux was observed in SV and PV in 48.2% of the legs. It was detected in all three systems in 29.2% of cases. The presence of reflux in more than one system and more than one value was associated with increased clinical severity. The site of venous reflux in lower extremities with varicose veins varies. Greater clinical severity is observed in the presence of more marked reflux in the DVS and PV. CDU provides anatomic and functional data on the three venous systems of the lower limbs, allowing an individualized therapeutic surgery. Preoperative localization of incompetent PV by means of CDU facilities their ligation. CDU is the technique of choice for the preoperative examination of the venous systems of patients with varicose veins. (Author)

  6. Correlations between contrast enhanced color Doppler US and neoangiogenesis in small prostate carcinomas; Correlazioni tra color Doppler con uso di mezzo di contrasto e neoangiogenesi dei piccoli carcinomi prostatici

    Energy Technology Data Exchange (ETDEWEB)

    Lagalla, R.; Caruso, G.; Caruso, R.; Bizzini, G. [Policlinico Universitario P. Giaccone, Palermo (Italy). Ist. di Radiologia; Marasa' , L. [Ospedale Oncologico M. Ascoli, Palermo (Italy). Servizio di Anatomia Patologica; Miceli, V. [Policlinico Universitario P. Giaccone, Palermo (Italy). Ist. di Clinica Urologica

    2000-04-01

    Aim of the work was to investigate if the use of a contrast agent (Levovist) improves the specificity of ultrasonography in the diagnosis of prostate carcinoma, having the results of prostate biopsy as the gold standard. The results have been compared with the microscopic angiogenesis grading system (MAGS) index; they exceed 30 in 11 avascular lesions value indicates microangiogenesis. In the other two cases a minor value of 30 was correlated with a different type of tumor vascularisation typical of macroangiogenesis. [Italian] Scopo del lavoro e' verificare se l'impiego del mezzo di contrasto Levovist (Schering, Berlino) consente di migliorare la specificta' dell'esame ecografico nella diagnosi del carcinoma prostatico, avendo come riferimento i risultati della biopsia prostatica. Trenta pazienti con esame obiettivo sospetto per carcinoma prostatico e antigene prostatico specifico (PSA) compreso tra 5 e 15 ng/ml, sono stati studiati con ecografia transrettale integrata da esame color Doppler e somministrazione di mdc. I risultati ottenuti sono stati confrontati con l'indice Microscopic Angiogenesis Grading System (MAGS) che nelle sezioni istologiche degli 11 casi con aspetto avascolare e' stato superato a 30, espressione di microgenesi; negli altri due casi, il valore inferiore a 30 e' conciso con un differente modello di vascolarizzazione neoplastica proprio della microangiogenesi.

  7. Color Doppler imaging of the ophthalmic artery in patients with chronic heart failure

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    Daniela B. Almeida-Freitas

    2011-10-01

    Full Text Available Purpose: To evaluate the ophthalmic artery hemodynamics in patients with chronic heart failure. Methods: Doppler parameters of ophthalmic artery of 18 patients with chronic heart failure in different stages of the disease were compared with 21 healthy volunteers (control group. These parameters were also correlated with echocardiographic assessments and clinical cardiologic status. Results: Mean diastolic velocity was 5.14 ± 2.4 cm/s in the chronic heart failure group and 7.44 ± 3.5 cm/s in the control group (p=0.007. Mean resistance index of the ophthalmic artery was 0.76 ± 0.08 in the chronic heart failure group and 0.70 ± 0.08 in the control group (p=0.04. Mean systolic velocity of the ophthalmic artery was 22.03 ± 7.7 cm/s in the chronic heart failure group and 25.32 ± 9.2 cm/s in the control group (p=0.24. There was a negative correlation between the resistance index of the ophthalmic artery and systemic blood pressure of patients with chronic heart failure (r= -0.47, p=0.007. Diastolic velocity of the ophthalmic artery correlated positively with systemic blood pressure (r=0.44, p=0.02. Conclusion: Lower diastolic velocity and higher resistance index were observed in the ophthalmic artery of chronic heart failure patients when compared to the control group, which probably reflects the presence of orbital vasoconstriction in response to low cardiac output. Therefore, the influence of these findings on the structure and function of the optic nerve head deserves investigation.

  8. Transvaginal color Doppler imaging of uterine contractions in early pregnancies: Significance of uterine contractions in early pregnancy failure

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eun Ju; Han, Chang Jin; Suh, Jung Ho; Kwon, Hyuck Chan [Aju University SChool of Medicine, Suwon (Korea, Republic of)

    1999-06-15

    To assess uterine contractions in early pregnancies using transvaginal color Doppler sonography (TVCDS) and to determine the role of uterine contractions in the diagnosis of early pregnancy failure. 76 patients with abnormal pregnancy diagnosed by sonography or histopathology up to 10 weeks of gestation and 38 normal pregnant women as the control group were examines with TVCDS. The presence of uterine contractions was determined by complete or partial disappearance of the color flow signals of vessels within myometrium, and the direction, amplitude (grade 1-3), and interval of uterine contractions were also evaluated. Uterine contractions were identified in 42 (55.3%) of 76 patients with abnormal pregnancy, whereas they were detected only in 2 (5.3%) of 38 normal pregnant women who had initial grade 1 contraction but disappeared in the follow-up study. In 26 patients with blighted ovum or missed abortion, 15 patients (57.7%),showed uterine contraction of grade 1 in 3 cases, grade 2 in 8 cases, and grade 3 in 4 cases and interval from 45 seconds to 5 minutes. In 30 patients with inevitable or incomplete abortion, 23 patients (76.6%) showed uterine contraction of grade 1 in 2 cases, grade 2 in 9 cases, and grade 3 in 12 cases and interval from 1 to 5 minutes. 4 (20%) of 20 patients with threatened abortion had uterine contraction of grade 2 and interval from 2 to 4 minutes. The presence of uterine contractions was significantly different in abnormal pregnancies compared with that of normal and also among the tree different groups of abnormal pregnancies, but the amplitude did not differ.

  9. Efficacy of Preoperative Color Doppler Sonography of Lower Extremity Veins on Postoperative Outcomes in Candidates of Saphenectomy: A Randomized Clinical Trial

    Science.gov (United States)

    Zarepur, Rouhollah; Kargar, Saeed; Hadadzadeh, Mehdi; Hatamizadeh, Nooshin; Zarepur, Ehsan; Forouzannia, Seyed Khalil; Faraji, Reza; Sarebanhassanabadi, Mohammadtaghi

    2016-01-01

    Background Doppler sonography is a type of sonography used for imaging the blood flow in the vessels and heart. This technique uses ultrasound waves with high frequency. In some patient candidates for venous graft, the identification of the suitable vein is not possible with clinical examination. Objective This study compared the effects of preoperative color Doppler sonography of lower extremity veins on the postoperative outcomes of saphenectomy. Methods This randomized clinical trial was conducted on 100 candidates of an off-pump coronary artery bypass graft (CABG) hospitalized in Afshar Hospital in Yazd in 2015. Patients were divided into two groups: 50 patients in the study group and 50 patients in the control group. Patients in the study group underwent color Doppler sonography of lower extremity veins using the Medison 8000 Live device. Patients in the control group were assessed preoperatively by routine venous examination without undergoing color Doppler sonography. The prepping and draping methods and also the preoperative antibiotics were the same for both groups. The patients were assessed for wound infection, edema, hematoma, and DVT 2 days, 1 week, and 1 month after surgery. Data were analyzed by SPSS version 16 using t-test, Chi-square, and Fisher’s exact test. Results The length of incision for saphenectomy was 29.20 ± 3.71 cm in the Doppler group and 28.98 ± 3.72 cm in the non-Doppler group with no significant difference between the two groups (p=0.768). The two groups were not significantly different with respect to age, gender, diabetes, hypertension, hyperlipidemia, smoking, and history of peripheral vessels disease, postoperative infection, postoperative organ edema, postoperative hematoma, and postoperative DVT. Conclusion Preoperative color Doppler sonography of the saphenous vein before saphenectomy has no effect on reducing the postoperative complications, and saphenectomy on the basis of intraoperative examination of the vein course by

  10. Stress echocardiography

    NARCIS (Netherlands)

    A. Salustri (Alessandro)

    1993-01-01

    textabstractIn the studies reported in this thesis, stress echocardiography (either with exercise or with pharmacological agents) and myocardial perfusion scintigraphy have been performed in different groups of patients and in different clinical conditions. Some practical aspects on the protocols of

  11. Stress echocardiography

    NARCIS (Netherlands)

    A. Salustri (Alessandro)

    1993-01-01

    textabstractIn the studies reported in this thesis, stress echocardiography (either with exercise or with pharmacological agents) and myocardial perfusion scintigraphy have been performed in different groups of patients and in different clinical conditions. Some practical aspects on the protocols

  12. Color Doppler monitoring of changes of utero-placental-fetal circulation in normal pregnancy and intrauterine growth retardation.

    Science.gov (United States)

    Xu, J; Wen, L; Ma, T; Zhang, Y; Zhang, Q; Gao, S; Zhao, M; Wu, H; Hu, J

    1997-01-01

    The utero-placental-fetal circulation (UPFC) of 150 subjects during second and third trimester was examined by using color Doppler. Of them 89 were normal woman and 58 were patients with intrauterine growth retardation IUGR). Our results showed that UPFC was increased gradually during normal pregnant period. In IUGR patients it was revealed that TAV and Q of UmA, UmV and UtA decreased at 20th week of gestation, especially after 30th week. PI, RI and S/D ratio of UmA were increased, but TAV, Q of UmA and UmV were markly reduced, so was UtA. PI were increased, but the changes of RI, S/D ratio in UtA were not significant. Hemodynamical findings of UmA, UmV and UtA were abnormal in 92.53% of IUGR patients. Only 81.03% present abnormal S/D ratio of UmA (P UPFC function directly. It is one of the best methods for monitoring IUGR and might be used for early diagnosis of IUGR. The main pathophysiological changes of IUGR were UPFC obstruction and placental disfunction.

  13. Effect of sample volume size and sampling method on feline longitudinal myocardial velocity profiles from color tissue Doppler imaging.

    Science.gov (United States)

    Granström, Sara; Pipper, Christian Bressen; Møgelvang, Rasmus; Sogaard, Peter; Willesen, Jakob Lundgren; Koch, Jørgen

    2012-12-01

    The aims of this study were to compare the effect of sample volume (SV) size settings and sampling method on measurement variability and peak systolic (s'), and early (e') and late (a') diastolic longitudinal myocardial velocities using color tissue Doppler imaging (cTDI) in cats. Twenty cats with normal echocardiograms and 20 cats with hypertrophic cardiomyopathy. We quantified and compared empirical variance and average absolute values of s', e' and a' for three cardiac cycles using eight different SV settings (length 1,2,3 and 5 mm; width 1 and 2 mm) and three methods of sampling (end-diastolic sampling with manual tracking of the SV, end-systolic sampling without tracking, and random-frame sampling without tracking). No significant difference in empirical variance could be demonstrated between most of the tested SVs. However, the two settings with a length of 1 mm resulted in a significantly higher variance compared with all settings where the SV length exceeded 2 mm (p sampling method on the variability of measurements (p = 0.003) and manual tracking obtained the lowest variance. No difference in average values of s', e' or a' could be found between any of the SV settings or sampling methods. Within the tested range of SV settings, an SV length of 1 mm resulted in higher measurement variability compared with an SV length of 3 and 5 mm, and should therefore be avoided. Manual tracking of the sample volume is recommended. Copyright © 2012 Elsevier B.V. All rights reserved.

  14. CORRELATION OF HIGH RESOLUTION ULTRASOUND AND COLOR DOPPLER FINDINGS OF THYROID NODULES WITH FINE NEEDLE ASPIRATION CYTOLOGY

    Directory of Open Access Journals (Sweden)

    Rajendra Kumar

    2015-07-01

    Full Text Available The objective of this study was to assess the utility of gray scale and color Doppler Ultrasonographic (US findings in characterization of benign and malignant thyroid nodules in correlation with the pathological diagnosis. METHODS: From January 2013 through December 2013, a total of 70 patients with solitary thyroid nodule underwent thyroid US with 7.5 – 12 MHz, linear array transducer of ESOATE MYLAB 40 . The following characteristics of each nodule were determined: Nodule diameter, Shape , Margins, Internal Contents , Echo texture, Halo, Presence and pattern of calcification, Pattern of vascularity, resistive index (RI of Intranodular/Peripheral vessels, and Association of cervical lymphadenopathy. Sensitivity, specificity, and positive and negative predictive values were obtained. The results were then compared to the fine needle aspira tion (FNA/Histopathological diagnosis. Diagnostic accuracy of US was determined using multiple logistic regression analysis. RESULTS: Statistically significant ( P peripheral pattern of vascularity and associated cervical lymphadenopathy. The overall diagnostic accuracy of thyroid US for differentiating a malignant lesion from a benign one was found to be 84.3%. CONCLUSION: Taller - than - wide shape, Lobulated/poorly defined margins, Hypoechogenicity and Marked hypoechogenicity, Microcalcifications and Central/central >peripheral pattern of vascularity are helpful criteria for the discrimination of malignant from benign nodules. Thyroid US achieved a good overall diagnostic accuracy in the categorization of benign and malignant thyroid nodules.

  15. Neoangiogenesis in early cervical cancer: Correlation between color Doppler findings and risk factors. A prospective observational study

    Directory of Open Access Journals (Sweden)

    Mazaira Jesús

    2008-11-01

    Full Text Available Abstract Background The aim of the present article was to evaluate whether angiogenic parameters as assessed by transvaginal color Doppler ultrasound (TVCD may predict those prognostic factors related to recurrence. Methods A total of 27 patients (mean age: 51.3 years, range: 29 to 85 with histologically proven early stage invasive cervical cancer were evaluated by TVCD prior to surgery. Subjective assessment of the amount of vessels within the tumor (scanty-moderate or abundant and pulsatility index (PI were recorded. All patients underwent radical hysterectomy and pelvic lymph node dissection. Postoperative treatment (RT or chemoradiotherapy was given according to risk factors (positive lymph nodes, parametrial and vaginal margin involvement, depth stromal invasion, lymph-vascular space involvement Results Tumors with "abundant" vascularization were significantly associated with pelvic lymph node metastases, depth stromal invasion > 10 mm, lymph-vascular space involvement, tumor diameter > 17.5 mm, and parametrial involvement. Postoperative treatment was significantly more frequent in patients with "abundant" vascularization (OR: 20.8, 95% CIs: 2 to 211. The presence of scanty-moderate vascularization with a PI 0.82 or PI Conclusion The results are consistent with a relationship between tumor angiogenesis and prognostic factors for recurrence in early cervical cancer. "Abundant" vascularization and PI

  16. Color Doppler Ultrasound of Lower Extremity Varicose Veins: A Simple Grading of Sapheno-Femoral Junction Reflux

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    Huh, Sik; Hong, Suk Joo; Kim, Shin Kee; Hong, Sun Hwa [Korea University Guro Hospital, Korea University College of Medicine, Seoul (Korea, Republic of); Park, Sang Woo [Konkuk University Hospital, Konkuk University School of Medicine, Seoul (Korea, Republic of); Kim, Yeon Soo [Ilsan Paik Hospital, Inje University College of Medicine, Goyang (Korea, Republic of)

    2011-12-15

    To establish a simple grading method for the severity of an incompetent sapheno-femoral junction (SFJ) using color Doppler ultrasound in patients with lower extremity varicose veins. 346 legs of 241 consecutive patients with varicose veins were examined (M:F = 96:145, 11-74 years, mean 50 years). The severity of SFJ and sapheno-popliteal (SPJ) incompetence was graded from I to IV according to the patient's position (standing versus supine or prone) and whether the Valsalva's maneuver had been induced. The extent of varicose veins was graded as I to III by the US findings in the SFJ incompetence group. The grading of SFJ incompetence was compared to the extent of varicose vein. SFJ, SPJ, both SFJ and SPJ, and perforator incompetence was observed in 198 (57.2%), 81 (23.4%), 21 (6.1%) and 54 (15.6%), respectively. Among the SFJ incompetence group, severity grade I - IV were observed in 14 (7.1%), 75 (37.9%), 73 (36.9%), and 36 (18.2%), respectively, and the extent grade I - III were noted in 47 (23.7%), 95 (48.0%), and 56 (28.3%), respectively. The SFJ incompetence grade and varicose extent grade showed a positive correlation (p < 0.0001). Simple sonographic grading of the severity of SFJ incompetence is possible. The extent of varicose veins in the SFJ incompetence group can be determined using this new grading system

  17. Diagnosis of Rupture of Mitral Chordae Tendinese by Color Doppler Eehocardiogrphy%二尖瓣腱索断裂的彩色多普勒超声心动图诊断

    Institute of Scientific and Technical Information of China (English)

    侯传举; 邓东安; 张玉威; 张仁福

    1996-01-01

    In 6016 patients of different cardiovascular diseases operated,5 cases with rupture of mitral chordae tendineae(RMCT)were detected by color Doppler eehocardiography(CDE).The accuracy rate of CDE was 100%.The ultrasonic manifeslations of RMCT in CDE were"flail shape" change of the mitral leaflets with ruptued ehordae tendineae in two-dimensional echocardiography (2DE)and a shade of multi-colored resurgitated jet of blood through mitral valve during systol in CDE.It is concluded that CDE has specific value in the diagnosis of RMCT and can replace the angiocardiography.It is necessary to differentiate RMCT from mitral valve prolapse(MVP)and mitral valve vegetation(MVV)by CDE.Surgical treatment should be done as soon as the diagnosis of RMCT iS confirmed.%应用彩色多普勒超声心动图(CDE)在已手术的6016例各种心血管疾病中检出5例二尖瓣腱索断裂(RMCT),CDE诊断准确率100%.本病的CDE表现是两维超声心动图(2DE)显示腱索断裂的二尖瓣叶呈"槤枷样"或"甩鞭样"改变,彩色多普勒(CD)显示收缩期过二尖瓣五彩相间返流束血流信号.结果表明CDE对本病有特异性诊断价值,可代替心血管造影检查.CDE诊断本病需与二尖瓣脱垂(MVP)和二尖瓣叶赘生物(MVV)相鉴别.一旦确诊应及早手术治疗.

  18. Validation of color Doppler ultrasonography for evaluating the uterine blood flow and perfusion during late normal pregnancy and uterine torsion in buffaloes.

    Science.gov (United States)

    Hussein, Hassan A

    2013-04-15

    The aim of this study was to verify the efficacy of color Doppler ultrasonography for diagnosis of degree and duration of uterine torsion in buffaloes. In Assiut province/Upper Egypt, 65 buffaloes (37 with uterine torsion, 28 with normal late pregnancy) were examined clinically and using Doppler ultrasonography. The Doppler indices including resistance index (RI), pulsatility index (PI), time-averaged maximum velocity (TAMV), and blood flow volume (BFV) in the arteries ipsilateral to the uterine torsion (IPUT) and in arteries contralateral to the uterine torsion (COUT) were recorded. Methods of correction were documented along with dam and calf survival. Torsion was recorded postcervically with vaginal involvement in 35/37 (94.6%) of the cases. The degrees of uterine torsion were light and high in 9/37 (24.3%) and 28/37 (75.7%) of the cases, respectively (P = 0.001). Right uterine torsion was present in 36/37 (97.3%) of the cases (P = 0.0001). Pulsatility index, RI, TAMV, and BFV in IPUT and COUT did not differ significantly (P > 0.05) in normal late pregnancy. The PI and RI in IPUT were significantly higher (P perfusion. In conclusion, depicting blood flow within the middle uterine artery using color Doppler sonography could be helpful in correct diagnosis of duration and degree of uterine torsion and concurrently predicting the viability of the fetus and dam.

  19. Stress Doppler echocardiography in relatives of patients with idiopathic and familial pulmonary arterial hypertension: results of a multicenter European analysis of pulmonary artery pressure response to exercise and hypoxia.

    Science.gov (United States)

    Grünig, Ekkehard; Weissmann, Sylvia; Ehlken, Nicola; Fijalkowska, Anna; Fischer, Christine; Fourme, Thierry; Galié, Nazzareno; Ghofrani, Ardeschir; Harrison, Rachel E; Huez, Sandrine; Humbert, Marc; Janssen, Bart; Kober, Jaroslaw; Koehler, Rolf; Machado, Rajiv D; Mereles, Derliz; Naeije, Robert; Olschewski, Horst; Provencher, Steeve; Reichenberger, Frank; Retailleau, Kathleen; Rocchi, Guido; Simonneau, Gérald; Torbicki, Adam; Trembath, Richard; Seeger, Werner

    2009-04-07

    This large, prospective, multicentric study was performed to analyze the distribution of tricuspid regurgitation velocity (TRV) values during exercise and hypoxia in relatives of patients with idiopathic and familial pulmonary arterial hypertension (PAH) and in healthy control subjects. We tested the hypothesis that relatives of idiopathic/familial PAH patients display an enhanced frequency of hypertensive TRV response to stress and that this response is associated with mutations in the bone morphogenetic protein receptor II (BMPR2) gene. TRV was estimated by Doppler echocardiography during supine bicycle exercise in normoxia and during 120 minutes of normobaric hypoxia (FIO(2)=12%; approximately 4500 m) in 291 relatives of 109 PAH patients and in 191 age-matched control subjects. Mean maximal TRVs were significantly higher in PAH relatives during both exercise and hypoxia. During exercise, 10% of control subjects but 31.6% of relatives (Ppressure, smoking status, or heart rate. Within kindreds identified as harboring deleterious mutations of the BMPR2 gene, a hypertensive TRV response occurred significantly more often compared with those without detected mutations. Pulmonary hypertensive response to exercise and hypoxia in idiopathic/familial PAH relatives appears as a genetic trait with familial clustering, being correlated to but not caused by a BMPR2 mutation. The suitability of this trait to predict manifest PAH development should be addressed in long-term follow-up studies.

  20. Association of maternal and umbilical cord blood leptin concentrations and abnormal color Doppler indices of umbilical artery with fetal growth restriction

    Directory of Open Access Journals (Sweden)

    Elahe Zareaan

    2017-08-01

    Full Text Available Background: Fetal growth restriction (FGR is a condition with heterogeneous pathophysiology which characterized by fetal weight less than the tenth percentile for gestational age. Several factors have impact on maternal, placental and fetal due to growth restriction. Objective: The aim of this study was to investigate the relationship between levels of leptin in the cord, and serum leptin of mothers also abnormal color Doppler indices of umbilical artery with fetal growth restriction. Materials and Methods: This is a cross sectional study conducted in Isfahan, Iran, 2015-2016. We recruited 40 women with singleton pregnancies complicated by fetal growth restriction (Group I and 40 pregnant women with normal fetal growth (Group II with matched age. Maternal serum and umbilical artery leptin levels were determined with Enzyme-Linked immunosorben method. Also, color Doppler ultrasound of umbilical artery was performed. Results: Mean maternal and fetal leptin levels were lower in the FGR group compared to the normal group (36.58±(20.99 and 7.42 ±(4.08vs. 47.32±(22.50 and 30.49±(14.50 respectively. Also, mean fetal leptin level was lower in the group with abnormal color Doppler sonographic indices compared to the normal group (7. 40 ±(4.10vs 27.06±(15.80, respectively. Conclusion: This study indicated that maternal and fetal leptin levels are correlated with FGR originating from damaged placental function; also fetal leptin level can indicate changes in color Doppler sonographic indices.

  1. 宫外孕的彩超诊断价值及临床意义%Diagnostic value and clinical significance of color Doppler ultrasound for ectopic pregnancy

    Institute of Scientific and Technical Information of China (English)

    高鸣

    2014-01-01

    目的:探讨彩超对宫外孕的诊断价值以及临床意义。方法回顾性分析88例宫外孕患者的临床及影像学资料。结果超声检查的88例宫外孕患者,诊断符合82例,误诊6例,确诊率为93.18%。结论彩超对宫外孕的诊断分辨力高、简便、快捷、诊断符合率较高,能为临床提供及时和切实可靠的诊断依据。%Objective To explore the diagnostic value and clinical significance of color Doppler ultrasound for ectopic pregnancy. Methods A retrospective analysis was made on the clinical and imaging data of 88 ectopic pregnancy patients. Results Among the 88 cases, who underwent color Doppler ultrasound examination, there were 82 cases with qualified diagnosis and 6 misdiagnosed cases. The accurate diagnosis rate was 93.18%. Conclusion Color Doppler ultrasound for ectopic pregnancy has the advantages of high diagnostic definition, convenience, high speed, and high diagnose accordance rate, thus it can provide timely and reliable information for clinicosis.

  2. Imaging features of gray-scale and contrast-enhanced color doppler US for the differentiation of transient renal arterial ischemia and arterial infarction

    Energy Technology Data Exchange (ETDEWEB)

    Park, Byung Kwan; Kim Seung Hyup [Seoul National University Hospital, Seoul (Korea, Republic of); Moon, Min Hwan; Jung, Sung Il [Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of)

    2005-09-15

    To characterize the imaging features on gray-scale and contrast-enhanced color Doppler US images which differentiate renal ischemia from renal infarction. The segmental renal arteries of eight healthy rabbits were surgically ligated. In four of these rabbits, the ligated renal artery was released 60 minutes after arterial occlusion to cause transient ischemia. In the remaining four rabbits, the arterial ligation was retained to cause a permanent infarction. The gray-scale and contrast-enhanced color Doppler US imaging features of the involved renal parenchymal of both ischemia and infarction groups were compared with respect to the presence or absence of parenchymal swelling, echogenicity changes, tissue loss and perfusion defects. Parenchyma swelling, echogenic changes, tissue loss and perfusion defects were found to be more extensive in the infarction than the ischemia group. The hyperechoic areas reperfused with blood flow recovered normal echogenicity and perfusion, whereas the hyperechoic areas without reperfusion became renal infarcts. Gray-scale and contrast-enhanced color Doppler US showed that the hyperechoic areas with reperfusion may reverse to normal parenchyma and allow the differentiation of renal ischemia from renal infarction.

  3. Karakteristik Aliran Darah pada Katup Semilunar Aorta Anjing Kampung yang Dinilai dengan Pulsed Wave Doppler Ekhokardiografi (CHARACTERISTICS OF BLOOD FLOW IN SEMILUNAR AORTA VALVE OF MONGREL DOG ASSESSED BY PULSED WAVE DOPPLER ECHOCARDIOGRAPHY

    Directory of Open Access Journals (Sweden)

    Deni Noviana

    2014-04-01

    Full Text Available The purpose of this study was to determine the characteristics of blood flow which passed through theaortic valve of normal Indonesian mongrel dogs using trans-thoracic Pulsed Wave Doppler (PWDechocardiography. Eight (8 adult dogs (three male dogs and 5 female dogs with an average age 3.31 ± 0.59years and average body weight 12.45 ± 1.30 kg were used in the study. Trans-thoracic PWD echocardiographyexaminations were performed in conscious/unsedated animals at the left lateral recumbence position. Theinstruments used in this study were: i two dimensional ultrasound device and ii phased array transducersmall foot print with 3.7 – 5.0 MHz frequency. Six elements of PWD were measured: i heart rate (HR; iipeak velocity (Vpeak; iii velocity time integral (VTI; iv mean pressure gradient (MPG; v pulsatilityindex (PI; and vi ratio of systole-diastole (S/D. Results showed the typically characteristics of blood flowin semilunar aorta valve is demonstrated by the only one peak wave (peak velocity = Vpeak upon examinationby placing the Doppler scan volume right on the aorta valve. In general, all six elements of PWD measuredwere found to be higher in female dogs compared to male dogs. However, these differences were notstatistically significant (P>0.05.

  4. Color Tissue Doppler to Analyze Fetal Cardiac Time Intervals: Normal Values and Influence of Sample Gate Size.

    Science.gov (United States)

    Willruth, A M; Steinhard, J; Enzensberger, C; Axt-Fliedner, R; Gembruch, U; Doelle, A; Dimitriou, I; Fimmers, R; Bahlmann, F

    2016-02-04

    Purpose: To assess the time intervals of the cardiac cycle in healthy fetuses in the second and third trimester using color tissue Doppler imaging (cTDI) and to evaluate the influence of different sizes of sample gates on time interval values. Materials and Methods: Time intervals were measured from the cTDI-derived Doppler waveform using a small and large region of interest (ROI) in healthy fetuses. Results: 40 fetuses were included. The median gestational age at examination was 26 + 1 (range: 20 + 5 - 34 + 5) weeks. The median frame rate was 116/s (100 - 161/s) and the median heart rate 143 (range: 125 - 158) beats per minute (bpm). Using small and large ROIs, the second trimester right ventricular (RV) mean isovolumetric contraction times (ICTs) were 39.8 and 41.4 ms (p = 0.17), the mean ejection times (ETs) were 170.2 and 164.6 ms (p < 0.001), the mean isovolumetric relaxation times (IRTs) were 52.8 and 55.3 ms (p = 0.08), respectively. The left ventricular (LV) mean ICTs were 36.2 and 39.4 ms (p = 0.05), the mean ETs were 167.4 and 164.5 ms (p = 0.013), the mean IRTs were 53.9 and 57.1 ms (p = 0.05), respectively. The third trimester RV mean ICTs were 50.7 and 50.4 ms (p = 0.75), the mean ETs were 172.3 and 181.4 ms (p = 0.49), the mean IRTs were 50.2 and 54.6 ms (p = 0.03); the LV mean ICTs were 45.1 and 46.2 ms (p = 0.35), the mean ETs were 175.2 vs. 172.9 ms (p = 0.29), the mean IRTs were 47.1 and 50.0 ms (p = 0.01), respectively. Conclusion: Isovolumetric time intervals can be analyzed precisely and relatively independent of ROI size. In the near future, automatic time interval measurement using ultrasound systems will be feasible and the analysis of fetal myocardial function can become part of the clinical routine.

  5. Role of color Doppler US in the evaluation of uterine leiomyoma treated with gonadotrophin-releasing hormone (GnRH) agonist (Zoladex)

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jung Sik; Sohn, Cheol Ho; Lee, Tae Sung [Keimyung University Dongsan Medical Center, Taegu (Korea, Republic of)

    1999-03-15

    To access the role of color Doppler US in the evaluation of uterine leiomyoma treated with GnRH agonist (Zoladex). Out of 25 patients with uterine leiomyoma treated with Zoladex, nineteen cases of leiomyoma in 18 women who had US examination before and after medication were included in this study. Zoladex was injected subcutaneously three times within three months. Both gray scale and color Doppler US were obtained before and 1-3 months after the medication. The size, volume, location and internal echoes of the leiomyoma were recorded with gray scale US. Changes in the amount of color signal within leiomyomas were recorded. Pulsatility index (PI), resistive index (RI), peak systolic velocity (PSV) of both uterine artery and arteries within leiomyomas were also recorded. The image findings of good response group and poor response group in which the volume reduction of the leiomyoma was above or below 50% respectively were compared with each other. The reduction of the volume of leiomyoma was compared between a group with decrease in the amount of color signals during follow-up US and a group with increase or no change. Mean reduction of the volume of leiomyomas was 52%. Changes in the amount of color signals of the leiomyoma, PI, RI, PSV obtained from the arteries within leiomyomas were not correlated with the change of the volume of leiomyomas. PSV of uterine artery in one month follow-up and PI of two month follow-up were correlated with the changes of the volume of leiomyomas (p<0.05). RI of uterine artery in two month follow-up was useful in prediction of the good response group and the poor response group (p<0.05). The prediction of the volume reduction of leiomyoma following Zoladex medication might be possible by obtaining RI of uterine artery in two month follow-up. Doppler US of the arteries within the leiomyoma was not useful.

  6. [Calculation of the mitral valve area with the proximal convergent flow method with Doppler-color in patients with mitral stenosis].

    Science.gov (United States)

    Aguilar, J A; Summerson, C; Flores, D; Espinosa, R A; Enciso, R; Badui, E; Hurtado, R

    1994-01-01

    In this study we evaluate prospectively a new color Doppler method for calculating the mitral valve area based on identifying a blue-red aliasing interfase proximal to the orifice, corresponding to the flow convergence region (FCR). This method can be used to calculate areas using the continuity equation. We studied 61 patients with stenosis. The mitral valve area was calculated using pressure half-time (PHT) Doppler method which were compared with values that obtained by the FCR method, according to the following formula. AVM (cm2) = 2 pi r2 x VN/Vmax; where "r" is the FCR radius measured from the orifice to the first color aliasing (blue-red interface); VN is Nyquist velocity and Vmax is the peak flow velocity by continuous wave Doppler. Twenty three patients had pure mitral stenosis and 38 double mitral lesion. Twenty patients were on sinus rhythm while 41 in atrial fibrillation. Calculated mitral valve area using the FCR method correlated well with mitral valve area determined by PHT method at a correlation coefficient of r = 0.96 (y = 0.097 x + 54.9, SEE = 0.10 cm2, p < 0.001). MVA by FCR ranged from 0.4 to 2.5 cm2 (mean = 1.19 cm2). MVA by PHT ranged from 0.42 to 2.48 cm2 (mean = 1.15 cm2). Color Doppler FCR method provides an accurate estimate of effective mitral valve area and may be useful as an alternative to the pressure half-time method. The calculated mitral valve area by the FCR method is not influenced by the presence of mitral regurgitation nor atrial fibrillation.

  7. QUANTITATIVE ANALYSIS ON CHANGES OF HEPATIC HEMODYNAMICS AFTER TRANSCUTANEOUS ELECTRIC PULSE STIMULATION OF LOCAL POINTS BY USING COLOR DOPPLER ULTRASOUND DIAGNOSTIC APPARATUS

    Institute of Scientific and Technical Information of China (English)

    ZHANG Jun-chang; WANG Ling; LI Hong; LI Jun; ZHANG Yun

    2006-01-01

    Objective: To evaluate the effect of transcutaneous electric pulse stimulation (TEPS) on hepatic blood flow and parenchymal microcirculation in patients with fatty liver. Methods: A total of 31 fatty liver volunteer patients were observed in this study. Changes of color Doppler energy (CDE) images before and after TEPS of local points nearby the liver were recorded by using color Doppler ultrasound diagnostic apparatus (ACUSON 128XP/10C). Sum of color pixel area (SCPA), average of color value (ACV) and SCPA×ACV (integral) of the hepatic flow images were analyzed by an image processing system, single blind method and paired t-test. Programmed TEPS (0.5- 150 Hz/2 000 Hz, 10-25 V) was applied to the right Qimen (期门LR 14)-Jingmen (京门GB 25), Fuai (腹哀 SP 16)-Ganshu (肝俞 BL 18) respectively for 15 min. Results:Compared with basic values of pretreatment, SCPA, ACV and SCPA×ACV increased significantly ( t = 2.71,P<0.02; t=3.42, P<0.01; and t=8.15, P<0.001 ) after TEPS, meaning improvement of hepatic blood flow supply. Conclusion: TEPS of acupoints near the liver can improve hepatic blood flow and hepatic parenchyrnal microcirculation in patients with fatty liver.

  8. Evaluation of varicocele frequency of patients with spinal cord injury by color Doppler ultrasonography: A new etiological factor for varicocele?

    Energy Technology Data Exchange (ETDEWEB)

    Unsal, Alparslan [Adnan Menderes University, Faculty of Medicine, Department of Radiology, 09100 Aydin (Turkey)]. E-mail: aunsal@adu.edu.tr; Yilmaz, Bilge [Turkish Armed Forces Rehabilitation and Care Center, Department of Physical Medicine and Rehabilitation, Bilkent, Ankara (Turkey); Turgut, Ahmet Tuncay [Ankara Training and Research Hospital, Department of Radiology, Ankara (Turkey); Taskin, Fuesun [Adnan Menderes University, Faculty of Medicine, Department of Radiology, 09100 Aydin (Turkey); Alaca, Ridvan [Turkish Armed Forces Rehabilitation and Care Center, Department of Physical Medicine and Rehabilitation, Bilkent, Ankara (Turkey); Karaman, Can Zafer [Adnan Menderes University, Faculty of Medicine, Department of Radiology, 09100 Aydin (Turkey)

    2006-01-15

    Purpose: To evaluate the varicocele frequency of patients with spinal cord injury by color Doppler ultrasonography. Materials and methods: Sixty patients {l_brace}48 patients with upper motor neuron injury (U-MNI) and 12 patients with lower-MNI{r_brace} with traumatic spinal cord injury and age matched 48 healthy volunteers were enrolled in this prospective study. Testis volumes and varicocele grades were determined. Presence of varicocele was also classified according to clinical significance. Results: Testis volumes of U-MNI sub-group (14.81 {+-} 4.74 ml) were significantly smaller than the control group (18.20 {+-} 4.52 ml, p = 0.000) and L-MNI sub-group (17.88 {+-} 3.23 ml, p = 0.008). No left-sided clinical varicocele was found in L-MNI sub-group (0/12, 0%), whereas there were 14 patients in control group (14/48, 29%) and 7 patients in U-MNI sub-group (7/47, 15%), and the difference was statistically significant (p = 0.000, 0.007, respectively). Conclusion: Clinical varicocele frequency of U-MNI patients, who have spastic paralysis of abdominal and lower extremity muscles, is similar to the control group. This finding inspires that increased intra-abdominal pressure via normal to increased abdominal muscle tonus may have a role in the varicocele etiology, beside the classical factors. Absence of clinical varicocele in L-MNI patients, who have flaccid paralysis of the same muscle groups, supports this observation.

  9. Short-term effects of intravitreal triamcinolone acetonide injection on ocular blood flow evaluated with color Doppler ultrasonography

    Institute of Scientific and Technical Information of China (English)

    Mustafa; Alpaslan; Anayol; Yasin; Toklu; Elif; Asik; Kamberoglu; Sabri; Raza; Hasan; Basri; Arifoglu; Huseyin; Simavli; Ayse; Gul; Kocak; Altintas; Saban; Simsek

    2014-01-01

    AIM:To evaluate the changes in ocular blood flow with color Doppler ultrasonography(CDU) after intravitreal triamcinolone acetonide(IVTA) injection.METHODS:A total of 46 patients who underwent IVTA(4 mg/0.1 mL) injection for diabetic macular edema(DME)(n =22), central retinal vein occlusion(CRVO)(n =12) and choroidal neovascular membrane(CNVM)(n =12) were included in the study. Peak systolic velocity(PSV), end diastolic velocity(EDV) and resistivity index(RI) were measured from the ophthalmic artery(OA), the central retinal artery(CRA) and the posterior ciliary artery(PCA)of each patient with CDU before, at the end of the first week and at the end of the first month following IVTA injection.RESULTS:In the DME group, PSV of OA at the first of the first month(mean ±SD)(37.48 ±10.87 cm/s) increased compared to pre-injection value(31.39 ±10.84 cm/s)(P =0.048). There was a statistically significant decrease(P =0.049) in PSV of CRA at the end of the first month(7.97±2.67 cm/s) compared to the pre-injection(9.47±3.37 cm/s).There was not any statistically significant difference onthe other parameters in the DME group. Also, there was not any statistically significant difference on the ocular blood flow values in the CRVO and CNVM groups.CONCLUSION:We observed that 4 mg/0.1 mL IVTA increased PSV of OA and decreased PSV of CRA in DME patients and did not have any effect on ocular blood flow values of CRVO and CNVM patients.

  10. Value of sagittal color Doppler ultrasonography as a supplementary tool in the differential diagnosis of fetal cleft lip and palate

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Myoung Seok [Dept. of Radiology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul (Korea, Republic of); Cho, Jeong Yeon; Kim, Sang Youn; Kim, Seung Hyup [Dept. of Radiology, Seoul National University Hospital, Seoul (Korea, Republic of); Park, Joong Shin; Jun, Jong Kwan [College of Medicine, Seoul National University, Seoul (Korea, Republic of)

    2017-01-15

    The purpose of this study was to evaluate the feasibility and usefulness of sagittal color Doppler ultrasonography (CDUS) for the diagnosis of fetal cleft lip (CL) and cleft palate (CP). We performed targeted ultrasonography on 25 fetuses with CL and CP, taking coronal and axial images of the upper lip and maxillary alveolar arch in each case. The existence of defects in and malalignment of the alveolus on the axial image, hard palate defects on the midsagittal image, and flow-through defects on CDUS taken during fetal breathing or swallowing were assessed. We compared the ultrasonography findings with postnatal findings in all fetuses. Alveolar defects were detected in 16 out of 17 cases with CP and four out of eight cases with CL. Alveolar malalignment and hard palate defects were detected in 11 out of 17 cases and 14 out of 17 cases with CP, respectively, but not detected in any cases with CL. Communicating flow through the palate defect was detected in 11 out of 17 cases of CL with CP. The accuracy of detection in axial scans of an alveolar defect and malalignment was 80% and 76%, respectively. Accuracy of detection of in mid-sagittal images of hard palate defect and flow was 80% and 86%, respectively. The overall diagnostic accuracy of combined axial and sagittal images with sagittal CDUS was 92%. Sagittal CDUS of the fetal hard palate is a feasible method to directly reveal hard palate bony defects and flow through defects, which may have additional value in the differential diagnosis of fetal CL and CP.

  11. Short-term effects of intravitreal triamcinolone acetonide injection on ocular blood flow evaluated with color Doppler ultrasonography

    Directory of Open Access Journals (Sweden)

    Mustafa Alpaslan Anayol

    2014-10-01

    Full Text Available AIM:To evaluate the changes in ocular blood flow with color Doppler ultrasonography (CDU after intravitreal triamcinolone acetonide (IVTA injection.METHODS: A total of 46 patients who underwent IVTA (4 mg/0.1 mL injection for diabetic macular edema (DME (n=22, central retinal vein occlusion (CRVO (n=12 and choroidal neovascular membrane (CNVM (n=12 were included in the study. Peak systolic velocity (PSV, end diastolic velocity (EDV and resistivity index (RI were measured from the ophthalmic artery (OA, the central retinal artery (CRA and the posterior ciliary artery (PCA of each patient with CDU before, at the end of the first week and at the end of the first month following IVTA injection.RESULTS:In the DME group, PSV of OA at the first of the first month (mean±SD (37.48±10.87 cm/s increased compared to pre-injection value (31.39±10.84 cm/s (P=0.048. There was a statistically significant decrease (P=0.049 in PSV of CRA at the end of the first month (7.97±2.67 cm/s compared to the pre-injection (9.47±3.37 cm/s. There was not any statistically significant difference on the other parameters in the DME group. Also, there was not any statistically significant difference on the ocular blood flow values in the CRVO and CNVM groups.CONCLUSION: We observed that 4 mg/0.1 mL IVTA increased PSV of OA and decreased PSV of CRA in DME patients and did not have any effect on ocular blood flow values of CRVO and CNVM patients.

  12. Color Doppler imaging features in patients presenting central retinal artery occlusion with and without giant cell arteritis

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    Catalin Jianu Dragos

    2016-01-01

    Full Text Available Introduction. Central retinal artery obstruction (CRAO represents an abrupt diminution of blood flow through the CRA that is severe enough to cause ischemia of the inner retina with permanent unilateral visual loss. We presented the role of color Doppler imaging (CDI of orbital vessels and of extracranial duplex sonography (EDS in the etiological diagnosis of CRAO in two patients with clinical suspicion of unilateral CRAO. Case report. Patients were examined following the protocol which included CDI of orbital vessels and EDS. Both patients had no emboli visible on ophthalmoscopy. The B-scan ultrasound evaluation of the first patient found a small round, moderately reflective echo within the right optic nerve, 1.5 mm behind the optic disc (emboli of cholesterol. CDI of retrobulbar vessels revealed the normal right ophthalmic artery (OA hemodynamic parameters, but the first patient had no arterial flow signal on CDI at the distance of 1.5 mm behind the right optic disc. In contrast, the left eye had the normal aspect on CDI of retrobulbar vessels. The right internal carotid artery EDS identified a severe stenosis at its origin as CRA’s emboli source. The second patient had characteristic CDI findings for giant cell arteritis (GCA with eye involvement: severe diminished blood flow velocities, especially end-diastolic velocities, in both CRAs. Less abnormalities were observed in the posterior ciliary arteries, and in the ophthalmic arteries. The second patient had no systemic symptoms or signs of GCA. Conclusion. In the presented cases, the ultrasound investigation enabled prompt differentiation between central retinal artery occlusion of embolic mechanism and CRAO caused by GCA.

  13. Evaluation the index of ophthalmic arteries in diabetic patients with retinopathy compared to diabetic patients without retinopathy using color Doppler ultrasound

    Directory of Open Access Journals (Sweden)

    Mohammad Ghasem Hanafi

    2016-12-01

    Full Text Available Diabetic retinopathy is the most common eye complication in diabetic patients that early detection of this complication is essential. The aim of this study was to evaluate ophthalmic artery index in diabetic retinopathy by Doppler ultrasound. . In this cross-sectional study, 64 patients were studied in 4 groups (healthy, diabetic without retinopathy, background retinopathy and proliferative retinopathy. Resistance index (RI and Pulsatile Index (PI were assessed by color Doppler ultrasound. The obtained data were analyzed by ANOVA and chi-square test and ROC curve. RI in diabetic patients with proliferative retinopathy has the highest mean (0.83 and the lowest mean was observed in healthy subjects (0.54 (P <0.001 as well as in PI, the highest rate was in diabetic patients with proliferative retinopathy (1.41 and the lowest was in healthy subjects (0.92 (P <0.001. The results of our study showed that the sensitivity, specificity, positive and negative predictive values and overall accuracy of RI and PI in diabetic patients with proliferative retinopathy in the best cut-off points (0.645 and 1.0175 respectively were 100%.Ophthalmic artery index RI and PI was significantly increased in patients with diabetic retinopathy and the sensitivity and specificity for detection retinopathy was 100%. Color Doppler ultrasound method is more efficient for screening diabetic patients with retinopathy.

  14. Avaliação com Doppler colorido e espectral da veia porta de cães Evaluation of portal vein in dogs by color and spectral Doppler imaging

    Directory of Open Access Journals (Sweden)

    Raquel Sartor

    2009-04-01

    Full Text Available A perfusão total do fígado e suas contribuições relativas, pelo sistema portal e pela artéria hepática, podem estar alteradas por vários processos hepáticos, como doença hepato-celular difusa, neoplasia e shunts intra-hepáticos. O estudo do comportamento do fluxo sangüíneo nos vasos do fígado por meio da ultra-sonografia Doppler tem demonstrado que este é um método viável não-invasivo e de grande auxílio, principalmente na avaliação da hemodinâmica portal. São duas as modalidades de ultra-sonografia Doppler com maior aplicação na rotina para avaliação de fluxo nos vasos abdominais, o Doppler espectral e o Doppler colorido. Na doença hepática crônica, ocorre alteração da complacência hepática devido à fibrose ou à cirrose, as quais acarretam alterações vasculares, levando ao aumento da pressão venosa portal. As principais indicações desse exame são os casos em que há suspeita de hipertensão portal. A hemodinâmica portal é avaliada pela mensuração de sua área, da velocidade média, do volume de fluxo no vaso e do índice de congestão portal. Esta revisão de literatura tem como objetivo descrever os princípios físicos básicos da ultra-sonografia Doppler e sua aplicação na avaliação da hemodinâmica portal nos cães.Total hepatic perfusion by portal system and hepatic arteria as well as its respective average contributions, can be affected for several hepatic processes, such as diffuse liver disease, neoplasm and intrahepatic shunts. Blood flow exams of the liver vessels using Doppler ultrasonography, appeared as a viable, non-invasive and helpful diagnostic method for the hemoportal dynamic evaluation. There are two Doppler ultrasonographic modalities most frequently used in routine for evaluation of the abdominal vessels flow, spectral Doppler imaging and color-flow Doppler imaging. In chronic liver disease, alteration of hepatic complacency occurs because of either fibrosis or cirrhosis

  15. Color Doppler sonography with contrast in the differentiation of ovarian tumors Ultra-sonografia com Doppler colorido e uso de contraste na diferenciação dos tumores ovarianos

    Directory of Open Access Journals (Sweden)

    Eduardo Cardoso Blanco

    2003-01-01

    Full Text Available The objective of this study was to differentiate benign ovarian tumors from malignant ones before surgery using color and pulsed Doppler sonography, and to compare results obtained before and after use of contrast medium, thereby verifying whether contrast results in an improvement in the diagnostic sensitivity. METHODS: Sixty two women (mean age 49.9 years with ovarian tumors were studied, 45 with benign and 17 with malignant tumors. All women underwent a transvaginal color Doppler ultrasonographic exam. A study of the arterial vascular flow was made in all tumor areas, as well as an impedance evaluation of arterial vascular flow using the resistance index. RESULT: Localization of the vessels in the tumor revealed a greater proportion of malignant tumors with detectable internal vascular flows (64% than benign tumors with such flows (22%. There was a considerable overlap of these findings. The use of contrast identified a greater number of vessels with confirmation in the totality of tumors, but did not improve the Doppler capacity in tumoral differentiation. Malignant tumors presented lower values of resistance index than the benign ones, whether or not contrast was used. The cutoff value for resistance index that better maximized the Doppler sensitivity and specificity was 0.55. Through this value, an increase of the sensitivity after contrast use was obtained, varying from 47% to 82%, while specificity remained statistically unchanged. CONCLUSION: Although the injection of a microbubble agent improved the sensitivity of the method detecting vascularization of tumors, a positive finding for vascularization by this method was not clinically useful in the differentiation of benign and malignant ovarian tumors.O objetivo deste estudo foi diferenciar tumores ovarianos benignos e malignos antes da cirurgia através da ultra-sonografia com uso de Doppler colorido pulsátil e comparar os resultados obtidos antes e após o uso de contraste. M

  16. 4-Dimensionally Guided 3-Dimensional Color-Doppler Ultrasonography Quantifies Carotid Artery Stenosis With High Reproducibility and Accuracy.

    Science.gov (United States)

    Macharzina, Roland Richard; Kocher, Sascha; Messé, Steven R; Rutkowski, Thomas; Hoffmann, Fabian; Vogt, Matthias; Vach, Werner; Fan, Nian; Rastan, Aljoscha; Neumann, Franz-Josef; Zeller, Thomas

    2017-07-13

    The purpose was to analyze the agreement and binary accuracy of the degree of internal carotid artery stenosis (ICAS) as determined by 4-dimensionally (4D) real-time gray-scale guided 3-dimensional (3D) color-Doppler ultrasonography (3DC-US) (4D/3DC-US) compared with catheter angiography (CA) and duplex ultrasonography (DUS). This study hypothesized that 4D/3DC-US is noninferior to CA and DUS in grading ICAS in selected patients. Clinical stratification in patients with ICAS largely depends on a patient's symptomatic status and the degree of stenosis. Screening with 4D/3DC-US was prospectively performed in 93 study patients (with 122 ICASs), thus yielding 80 patients for analysis (with 103 ICASs) after excluding patients with insufficient image quality, previous revascularization, and contraindications to CA. The ultrasound examination (10 MHz) consisted of consensus conform DUS examination and independent real-time 4D-guided gray-scale views for orientation followed by static 3DC-US NASCET (North American Symptomatic Carotid Endarterectomy Trial) percent stenosis quantification using off-line multiplanar rendering. Multiplanar selective CA of the same ICASs was quantified with dedicated software in a blinded fashion. Quantitative CA of 103 stenoses with a mean degree of 65 ± 17% was compared with 4D/3DC-US, with a resulting concordance correlation coefficient of 0.89 and a standard deviation of differences (SDD) of 8.1% at a bias of +1.7%. Binary 50% and 70% stenosis detection with 4D/3DC-US revealed a sensitivity of 97% and 87%, respectively, and a specificity of 92% and 84%, respectively. Interobserver SDD for CA of 52 stenoses (7.2%) did not differ from SDD for 4D/3DC-US and CA (p = 0.274). Accuracy of 50% stenosis detection by 4D/3DC-US was tendentially higher compared with DUS (96% vs. 91%). The 4D/3DC-US method provides reliable and accurate stenosis quantification and binary classification with good diagnostic accuracy compared with CA and DUS. Copyright

  17. Assessment of Uterine Receptivity by Endometrial and Subendometrial Blood Flows Measured by Vaginal Color Doppler Ultrasound in Women Undergoing IVF Treatment

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Obiective To evaluate endometrial and Subendometrial blood flows measured by vaginal color Doppler ultrasound as a predicator of endometrial receptivity in women undergoing IVF treatment.Methods A total of 119 infertile patients undergoing the first IVF/ICSI-ET cycle were recruited.Three groups were divided according to a color Doppler ultrasound examination performed on the day of hCG injection.Group A,endometrial and subendometrial blood flows were 2 branches and below,group B,endometrial and subendometrial blood flows were between 3 and 4 branches;group C, endometrial and subendometrial blood flows were 5 branches and above.Patients were transferred 1-3 embryos each.Demographic data,ovarian responses.endometrial thickness,PI,RI,development of embryo and IVF result among groups were compared.Results Demographic data,ovarian responses,endometrial thickness,PI,RI and development of embryo among groups have no significant difference.The pregnancy rate of group A was significantly lower than that of group B(P<0.05) and group C(P<0.01).The implantation rate of group A was significantly lower than than of group C (P<0.01).There was no significant difference of the rate of pregnancy and implantation between group B and group C (P>0.05).Conclusion Endometrial and subendometrial blood flows measured by vaginal color Doppler ultrasound is a good predicator of pregnancy during IVF treatment.A good endometrial and subendometrial blood flows is benefit for the result of IVF.

  18. Assessment value of blood flow velocity and resistance index detection by transvaginal color Doppler ultrasound on effect of neoadjuvant chemotherapy for ovarian cancer

    Institute of Scientific and Technical Information of China (English)

    You-Bin Fan

    2016-01-01

    Objective:To analyze the assessment value of blood flow velocity and resistance index detection by transvaginal color Doppler ultrasound on effect of neoadjuvant chemotherapy for ovarian cancer.Methods:A total of 78 cases of ovarian cancer patients receiving treatment in our hospital from September 2012 to May 2014 were included for study, all patients received neoadjuvant chemotherapy, and before and after treatment, transvaginal color Doppler ultrasound (TVCDU) was used to record resistance index (RI) and pulsatility index (PI), the expression levels of serum tumor markers, illness-related indicators and apoptosis-related factors in circulating blood were detected, and the correlation between TVCDU monitoring indexes and ovarian cancer-related indicators was further analyzed.Results: PI value (1.13±0.12) and RI value (0.65±0.05) of ovarian cancer patients after treatment were significantly higher than PI value (0.72±0.06) and RI value (0.32±0.03) of ovarian cancer patients before treatment; serum HE4, CA153, CA125 and毬-HCG levels of ovarian cancer patients after treatment were lower than those before treatment; serum MSLN, CCL-18, FS, CL and Hpa levels of ovarian cancer patients after treatment were lower than those before treatment; after ovarian cancer patients received neoadjuvant chemotherapy, ADM, HIF-1毩, PCNA and bcl-2 gene expression levels were lower than those before treatment; RI and PI values of ovarian cancer patients were inversely proportional to the expression levels of HE4, CA153, CA125,毬-HCG, MSLN, CCL-18, FS, CL, Hpa, ADM, HIF-1毩, PCNA and bcl-2. Conclusion:Blood flow velocity and resistance index detection by transvaginal color Doppler ultrasound can be used as a highly efficient means to evaluate the effect of neoadjuvant chemotherapy for ovarian cancer, and it has positive significance in judging disease severity, guiding treatment and other aspects.

  19. Transient basilar artery occlusion monitored by transcranial color Doppler presenting with a spectacular shrinking deficit: a case report

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    Del Sette Massimo

    2010-01-01

    Full Text Available Abstract Introduction We describe the case of a 79-year-old Caucasian Italian woman with a transient basilar occlusion monitored by transcranial Doppler, with subsequent recanalization and clinical shrinking deficit. This is the first case of transient basilar occlusive disease diagnosed and monitored by transcranial Doppler. This case is important and needs to be reported because transient basilar occlusion may be easily diagnosed if transcranial Doppler is performed. Case presentation A 79-year-old woman affected by chronic atrial fibrillation and not treated with oral anticoagulants, cardioverted to sinus rhythm during a gastric endoscopy. She then showed a sudden-onset loss of consciousness, horizontal and vertical gaze palsy, tetraparesis and bilateral miosis and coma. Two hours later, the symptoms resolved quickly, leaving no residual neurologic deficits. Transcranial Doppler examination showed a dampened flow in the basilar artery in the emergency examination and a restored flow when the symptoms resolved. Conclusion This is the first case of transient basilar occlusive disease diagnosed and monitored by transcranial Doppler. We believe that transcranial Doppler should be performed in all cases of unexplained acute loss of consciousness, in particular, if associated with signs of brainstem dysfunctions.

  20. Clinical value of transvaginal color Doppler ultrasound in diagnosis of ectopic pregnancy%阴道彩超诊断异位妊娠的临床价值

    Institute of Scientific and Technical Information of China (English)

    刘华; 张卉

    2012-01-01

    目的 探讨经阴道彩超检查对早期异位妊娠的诊断价值.方法 对226例经阴道超声检查诊断为早期异位妊娠的超声声像图和临床资料进行回顾性分析.结果 226例经阴道超声检查诊断为异位妊娠的病例,218例与临床及病理诊断符合,诊断符合率为96.4%,漏诊率为1.77% (4/226),误诊率为1.77%(4/226).结论 经阴道彩超诊断异位妊娠技术操作简单,图像显示清晰,对异位妊娠的检出率非常高.同时对异位妊娠发生的部位定位较准确,对病变的进展程度也可作出相应的评价.%[Objective]To explore the diagnostic value of transvaginal color Doppler ultrasound examination for early ectopic pregnancy. [Methods] The ultrasound images and clinical data of 226 early ectopic pregnancy cases diagnosed by transvaginal color Doppler ultrasound were analyzed retrospectively. [ Results ] Among 226 early ectopic pregnancy cases diagnosed by transvaginal color Doppler ultrasound, 218 cases accorded with the clinical and pathological diagnosis, the diagnostic accordance rate was 96.4% , the rate of missed diagnosis was 1.77% (4/226), and the rate of misdiagnosis was 1.77% (4/226). [Conclusion] The transvaginal color Doppler ultrasound in diagnosis of ectopic pregnancy has the advantages of simple operation, clear image display and high detection rate. Meanwhile, it can accurately determine the position of ectopic pregnancy, and make an appropriate evaluation on degree of disease.

  1. Global testicular infarction in the presence of epididymitis: clinical features, appearances on grayscale, color Doppler, and contrast-enhanced sonography, and histologic correlation.

    Science.gov (United States)

    Yusuf, Gibran; Sellars, Maria E; Kooiman, Gordon G; Diaz-Cano, Salvador; Sidhu, Paul S

    2013-01-01

    Epididymitis is common, presenting indolently with unilateral scrotal pain and swelling. Diagnosis is based on clinical assessment and resolves with antibiotic therapy. Recognized complications are abscess formation and segmental infarction. Global testicular infarction is rare. Diagnosis is important and requires surgical management. On grayscale sonography, global infarction may be difficult to establish. The addition of color Doppler imaging is useful but is observer experience dependent with limitations in the presence of low flow. Contrast-enhanced sonography is useful for unequivocally establishing the diagnosis. We report global testicular infarction in 2 patients with epididymitis clearly depicted on contrast-enhanced sonography, allowing immediate surgical management.

  2. 99m-Tc DMSA scintigraphy and color/power doppler sonography for children pyelonephritis diagnosis and follow-up; Scintigraphie au 99m-Tc DMSA et echo-doppler couleur/energie dans le diagnostic et le suivi des pyelonephrites de l'enfant

    Energy Technology Data Exchange (ETDEWEB)

    Hitzel, A.; Manrique, A.; Gardin, I.; Vera, P. [Centre de Lutte Contre le Cancer Henri-Becquerel, Dept. de Medecine Nucleaire, 76 - Rouen (France); Centre Hospitalier Universitaire Charles Nicolle, 76 - Rouen (France); Dacher, J.N.; Menard, J.F.; Vera, P. [Laboratoire Universitaire Quant.I.F., Faculte de Medecine de Rouen, 76 (France); Dacher, J.N. [Centre Hospitalier Universitaire Charles Nicolle, Dept. de Radiologie, 76 - Rouen (France); Liard, A. [Centre Hospitalier Universitaire Charles Nicolle, Dept. de Chirurgie Pediatrique, 76 - Rouen (France); Menard, J.F. [Centre Hospitalier Universitaire Charles Nicolle, Dept. de BioStatistiques, 76 - Rouen (France)

    2004-04-01

    Early diagnosis of acute pyelonephritis is essential to avoid scarring development. This study was performed to evaluate capabilities of color/doppler sonography to detect pyelonephritis and to predict scarring when compared with {sup 99m}Tc-DMSA scintigraphy. Fifty-seven children were evaluated during pyelonephritis: biology (CRP, creatinine, blood formula), color/power doppler sonography and {sup 99m}Tc-DMSA scintigraphy (DMSA1). 7 {+-} 2 months later, follow-up consisted in biological tests and a {sup 99m}'Tc-DMSA scintigraphy (DMSA2). During pyelonephritis, body temperature, CRP value and neutrophil counts were significantly higher in patients with an abnormal DMSA1 but not in patients with abnormal doppler sonography. When compared with DMSA1, doppler sonography sensitivity and specificity were 80% and 81% respectively. DMSA1 and doppler sonography were concordant in 86% of children with a pyelonephritis. At follow-up, all clinical et biological parameters were normalized. DMSA2 was abnormal in 51% of children. When compared with DMSA2, positive and negative predictive values for scarring of doppler sonography were 57% and 75% respectively. DMSA 1, positive and negative predictive values for scarring were 62% and 100%. In conclusion, color/power doppler sonography is a reliable tool for pyelonephritis diagnosis, but its predictive value for scarring is poor. Negative predictive value of DMSA scintigraphy is excellent. (author)

  3. Clinical value analysis of color doppler ultrasound screening for fetal congenital heart disease%彩超筛查胎儿先天性心脏病的临床价值分析

    Institute of Scientific and Technical Information of China (English)

    黄梅; 熊瑜

    2016-01-01

    Objective:To research clinical value of Doppler ultrasound screening for fetal congenital heart disease.Methods:1286 fetal were collected from Jan.2011 to Feb.2015 in our hospital,cases with fetal cardiac abnormalities discovered with color Doppler ultrasound were dynamically observed on postpartum echocardiography,operation and pathology results.Results:20 eases with fetal congenital heart disease were found in 1286 cases through color Doppler ultrasound,of which the aortatransposition with ventricular septal defect in 3 cases,tricuspid valve malformation in 1 case,3 cases is of endoeardial cushiondefect,the method of rockwell quadruple disease in 3 patients,4 cases were large ventricular septal defect,2 cases of atrial septal defects,left ventricular dysplasia in 2 cases,single atrium in 3 cases.23 fishy cases of congenital heart diseasewere confirmed by pathology,including aorta transposition merger ventricular septal defect in 4 cases,4 cases is endocardial cushion defect,the method of rockwell quadruple disease in 3 cases,large ventricular septal defect in 5 cases,2 cases of atrial septal defects,left ventricular dysplasia in 2 cases,single atrium in 3 cases,3 cases were misdiagnosed,diagnosis rate was 86.96%.Conclusion:Color Doppler echocardiography plays an important role in the diagnosis of fetal congenital heart disease,and could make accuratejudgment on the fetal cardiac abnormalities;it is a important imaging method on diagnosis of fetal congenital heart disease in prenatal screening,and shows safe,noninvasive,low cost characters.%目的 探讨彩色多普勒超声(彩超)筛查胎儿先天性心脏病的临床价值.方法 选择2011年1月至2015年2月期间在我院检查的1286例胎儿,对彩色多普勒超声筛查发现的胎儿心脏异常的病例进行动态追踪观察、产后超声心动图检查及追踪手术结果和病理结果,分析统计彩色多普勒超声诊断结果的符合率.结果 1286例胎儿发现先天性心脏病20

  4. Serial color Doppler flow of uterine vasculature combined with serum beta-hCG measurements for improved monitoring of patients with gestational trophoblastic disease. A preliminary report.

    Science.gov (United States)

    Maymon, R; Schneider, D; Shulman, A; Bukowsky, I; Weinraub, Z

    1996-01-01

    Weekly serum beta-hCG measurements and transvaginal ultrasound scans coupled with color Doppler flow were performed on 8 patients with hydatidiform mole. Two patients later developed persistent trophoblastic disease, necessitating chemotherapy. The correlation coefficients between Doppler flow indices, systolic-diastolic (S/D) ratio and pulsatility index (PI) with log beta-hCG were -0.96 and -0.97, respectively. The weekly S/D and PI indices were plotted on an individual curve. Only the 2 patients who developed persistent gestational trophoblastic disease had PI index levels of < or = 1.5 as early as 2 weeks after molar evacuation. At that stage their serum beta-hCG levels were not different from some of the other patients. In this preliminary report, the regression of the disease could be reliably assessed by observing the changes in low resistance flow which paralleled the gradual decrements in serial beta-hCG levels. Thus, the contribution of this noninvasive imaging technique encourages the authors to further investigate Doppler flow monitoring among a larger sample of patients suffering from various gestational trophoblastic diseases.

  5. Dynamic three-dimensional reconstruction of the heart by transesophageal echocardiography

    Directory of Open Access Journals (Sweden)

    Veiga Maria de Fátima

    1999-01-01

    Full Text Available OBJECTIVE: To evaluate echocardiography accuracy in performing and obtaining images for dynamical three-dimensional (3D reconstruction. METHODS: Three-dimensional (3D image reconstruction was obtained in 20 consecutive patients who underwent transesophageal echocardiography. A multiplanar 5 MHz transducer was used for 3D reconstruction. RESULTS: Twenty patients were studied consecutively. The following cardiac diseases were present: valvar prostheses-6 (2 mitral, 2 aortic and 2 mitral and aortic; mitral valve prolapse- 3; mitral and aortic disease - 2; aortic valve disease- 5; congenital heart disease- 3 (2 atrial septal defect- ASD - and 1 transposition of the great arteries -TGA; arteriovenous fistula- 1. In 7 patients, color Doppler was also obtained and used for 3D flow reconstruction. Twenty five cardiac structures were acquired and 60 reconstructions generated (28 of mitral valves, 14 of aortic valves, 4 of mitral prostheses, 7 of aortic prostheses and 7 of the ASD. Fifty five of 60 (91.6% reconstructions were considered of good quality by 2 independent observers. The 11 reconstructed mitral valves/prostheses and the 2 reconstructed ASDs provided more anatomical information than two dimensional echocardiography (2DE alone. CONCLUSION: 3D echocardiography using a transesophageal transducer is a feasible technique, which improves detection of anatomical details of cardiac structures, particularly of the mitral valve and atrial septum.

  6. Bedside echocardiography in internal medicine: which are the key questions and answers for our decision-making?

    Directory of Open Access Journals (Sweden)

    Chiara Cogliati

    2015-12-01

    Full Text Available The advent of portable equipment in the last years has brought ultrasound (US technology available at patient bedside, giving the opportunity to non-cardiologists to extend cardiac assessment based on physical examination. Bedside echocardiography is a question-driven examination, where simple and often dichotomous answers are searched. It is performed using phased-array probes and bi-dimensional images are visually evaluated to obtain information regarding cardiac size and function, presence of pericardial effusion, gross valvular diseases. Although this approach cannot in any case substitute a standard 2D color-Doppler echocardiography, bedside echocardiography has been demonstrated to maintain a good diagnostic accuracy when limited to basic questions, even in the hands of short-trained non cardiologist physicians. At present the bedside US approach is widely used in different settings and focused echocardiography takes part together with US explorations of lung, abdomen and deep veins in an integrated perspective that perfectly fits with the holistic approach of the internist. In this context we address two typical scenarios encountered in the internal medicine divisions - the patient presenting with dyspnea or nonpost- traumatic hypotension - showing the main questions we can ask to bedside echocardiography for a rapid identification of the determinants of symptoms and consequently for a therapeutic choice based on more objective evidence.

  7. A feasible method for non-invasive measurement of pulmonary vascular resistance in pulmonary arterial hypertension: Combined use of transthoracic Doppler-echocardiography and cardiac magnetic resonance. Non-invasive estimation of pulmonary vascular resistance.

    Science.gov (United States)

    Yan, Chaowu; Xu, Zhongying; Jin, Jinglin; Lv, Jianhua; Liu, Qiong; Zhu, Zhenhui; Pang, Kunjing; Shi, Yisheng; Fang, Wei; Wang, Yang

    2015-12-07

    Transthoracic Doppler-echocardiography (TTE) can estimate mean pulmonary arterial pressure (MPAP) and pulmonary capillary wedge pressure (PCWP) reliably, and cardiac magnetic resonance (CMR) is the best modality for non-invasive measurement of cardiac output (CO). We speculated that the combined use of TTE and CMR could provide a feasible method for non-invasive measurement of pulmonary vascular resistance (PVR) in pulmonary arterial hypertension (PAH). Right heart catheterization (RHC) was undertaken in 77 patients (17M/60F) with PAH, and simultaneous TTE was carried out to evaluate MPAP, PCWP and CO. Within 2 days, CO was measured again with CMR in similar physiological status. Then, PVR was calculated with the integrated non-invasive method: TTE-derived (MPAP-PCWP)/CMR-derived CO and the isolated TTE method: TTE-derived (MPAP-PCWP)/TTE-derived CO, respectively. The PVR calculated with integrated non-invasive method correlated well with RHC-calculated PVR (r = 0.931, 95% confidence interval 0.893 to 0.956). Between the integrated non-invasive PVR and RHC-calculated PVR, the Bland-Altman analysis showed the satisfactory limits of agreement (mean value: - 0.89 ± 2.59). In comparison, the limits of agreement were less satisfactory between TTE-calculated PVR and RHC-calculated PVR (mean value: - 1.80 ± 3.33). Furthermore, there were excellent intra- and inter-observer correlations for the measurements of TTE and CMR (P measurement of PVR is very important in clinical practice. Up to now, however, the widely accepted non-invasive method is still unavailable. Since TTE can estimate (MPAP-PCWP) reliably and CMR is the best image modality for the measurement of CO, the combined use of two modalities has the potential to determine PVR non-invasively. In this research, the integrated non-invasive method showed good diagnostic accuracy and repeatability compared with RHC. Therefore, it might be a feasible method for non-invasive measurement of PVR in patients

  8. Application of Echocardiography on Transgenic Mice with Cardiomyopathies

    Directory of Open Access Journals (Sweden)

    G. Chen

    2012-01-01

    Full Text Available Cardiomyopathies are common cardiac disorders that primarily affect cardiac muscle resulting in cardiac dysfunction and heart failure. Transgenic mouse disease models have been developed to investigate the cellular mechanisms underlying heart failure and sudden cardiac death observed in cardiomyopathy cases and to explore the therapeutic outcomes in experimental animals in vivo. Echocardiography is an essential diagnostic tool for accurate and noninvasive assessment of cardiac structure and function in experimental animals. Our laboratory has been among the first to apply high-frequency research echocardiography on transgenic mice with cardiomyopathies. In this work, we have summarized our and other studies on assessment of systolic and diastolic dysfunction using conventional echocardiography, pulsed Doppler, and tissue Doppler imaging in transgenic mice with various cardiomyopathies. Estimation of embryonic mouse hearts has been performed as well using this high-resolution echocardiography. Some technical considerations in mouse echocardiography have also been discussed.

  9. Recent advances in echocardiography for nuclear medicine physician

    Energy Technology Data Exchange (ETDEWEB)

    Hong, Geu Ru; Shin, Dong Gu [Yeungnam University College of Medicine, Daegu (Korea, Republic of)

    2005-10-15

    Echocardiography is one of the most frequently used techniques for diagnosing cardiovascular diseases. Over the last twenty years, technological advances have enabled the application of high-quality imaging. Important recent developments have occurred in echocardiography that are already being used clinically. Equipment and hardware is now available to produce real time three-dimensional and contrast enhanced imaging. Tissue Doppler and stress echocardiography have provided potential benefit to analyze hemodynamic information of heart. This review discusses each of these new developments and their potential impact on the practice of echocardiography and cardiology in general.

  10. 彩色多普勒超声诊断胎盘植入的价值%The Value of Color Doppler Ultrasound in Diagnosis of Placenta Accrete

    Institute of Scientific and Technical Information of China (English)

    王玲红; 武超

    2014-01-01

    目的:评价彩色多普勒超声诊断胎盘植入的价值。方法:回顾性分析2012年1月-2013年10月在天津市中心妇产科医院超声诊断胎盘低置状态或低置胎盘或前置胎盘的住院患者93例,其中超声检查疑似胎盘植入者24例。经腹部超声及阴道超声着重扫查胎盘的位置及其厚度、胎盘内回声、胎盘附着处子宫肌层厚度及其与子宫肌层的关系、与子宫相邻的膀胱壁情况、胎盘附着处血流情况。结果:24例经彩色多普勒超声检查疑似胎盘植入,经手术病理确诊为胎盘植入20例,其中粘连性胎盘4例,植入性胎盘14例,穿透性胎盘2例。超声误诊5例,漏诊1例。彩色多普勒超声检查的敏感度为95.00%,特异度为93.15%,阳性预测值为79.17%,阴性预测值为98.55%。结论:彩色多普勒超声为产前检查胎盘植入的较好方法。%Objective:To evaluate the value of color Doppler ultrasound in the diagnosis of placenta accreta. Methods:Retrospective analysis of 93 cases diagnosed as placenta low state ,low-lying placenta or placenta previa through ultrasound examination in our hospital between January 2012 to October 2013. 24 cases were diagnosed as placenta implantation among them. Abdominal and transvaginal ultrasonography focus in observing the thickness ,position and internal echo of the placenta , the thickness of uterine muscle in placental site ,the relationship between the placenta and uterine muscle ,and the adjacent urinary bladder wall blood flow in placental site were also included. Results:24 patients were suspected of placenta implantation by color Doppler ultrasonography,20 cases were confirmed of placenta implantation by pathology after operation,including 4 cases of placenta adherence,14 cases of placenta accreta,2 cases of placenta penetration.,5 cases of misdiagnosis, missed diagnosis in 1 cases. Sensitivity and specificity of color Doppler ultrasonography was 95.00% and 93

  11. 胡桃夹现象的彩色多普勒超声诊断及分析%The Diagnoses and Analysis of Nutcracker Phenomenon by Color Doppler Ultrasonography

    Institute of Scientific and Technical Information of China (English)

    邹勤; 邹雅; 权赫磊; 夏婷婷; 薛彩云; 侯淑娟; 刘露; 宋冬玲

    2015-01-01

    本文通过探讨彩色多普勒超声诊断胡桃夹现象(ncP)的临床价值,得出结论:彩色多普勒超声可作为诊断 ncP 的首选方法,ΔP 与 a/b 内径比联合应用可明显提高 ncP 的诊断准确性。%this paper through to investigate the clinic value of color doppler ultrasound in diagnosis of nutcracker Phenomenon(ncP),come to conclusion:color doppler ultrasound can provide important basis for clinical diagnosis of ncP. compositive adhibition of a/b and ΔP is the best method in diagnosis of ncP with color doppler ultrasound.

  12. Healed perivalvular abscess: Incidental finding on transthoracic echocardiography

    Directory of Open Access Journals (Sweden)

    Vishnu Datt

    2014-01-01

    Full Text Available A 36-year-old male patient presented with the complaints of palpitations and breathlessness. Preoperative transthoracic echocardiography (TTE revealed a bicuspid aortic valve; severe aortic regurgitation with dilated left ventricle (LV and mild LV systolic dysfunction (ejection fraction 50%. He was scheduled to undergo aortic valve replacement. History was not suggestive of infective endocarditis (IE. Preoperative TTE did not demonstrate any aortic perivalvular abscess. Intraoperative transesophageal echocardiography (TEE examination using the mid-esophageal (ME long-axis view, showed an abscess cavity affecting the aortic valve, which initially was assumed to be a dissection flap, but later confirmed to be an abscess cavity by color Doppler examination. The ME aortic valve short-axis view showed two abscesses; one was at the junction of the non-coronary and left coronary commissure and the other one above the right coronary cusp. Intraoperatively, these findings were confirmed by the surgeons. The case report demonstrates the superiority of TEE over TTE in diagnosing perivalvular abscesses.

  13. Value of color Doppler ultrasonography in diagnosis of rhabdomyolysis%横纹肌溶解症的超声诊断价值探讨

    Institute of Scientific and Technical Information of China (English)

    亓恒涛; 滕剑波; 张先东; 王增涛; 袁海

    2012-01-01

    Objective To study the value of color Doppler sonography in diagnosis of rhabdomyolysis.Methods The color Doppler sonography images of twenty-one patients with diagnosed rhabdomyolysis were retrospective analyzed.The pathological changes of the muscle were observed.Results The appearance of ultrasound was cloundness and rough-cast glass change in the diseased area of rhabdomyolysis.The diseased region can be found by ultrasound,and location and scope can be displayed clearly.There were major differences in the location of rhabdomyolysis because of etiological factor.The muscle volume and tension of rhabdomyolysis were increased for trauma,the individual patients will lead to the osteofascial compartment syndrome.There was no blood flow signal or little blood flow signal in the diseased area of rhabdomyolysis.Conclusions The color Doppler sonography is an efficient method for diagnosis of rhabdomyolysis.%目的 探讨彩色多普勒超声对横纹肌溶解症的诊断价值.方法 回顾性分析经临床和化验室检查证实的21例横纹肌溶解症患者的彩色多普勒超声特征.结果 超声均可测及异常病变区域,并清晰显示病变的部位及范围;不同病因横纹肌溶解症发生部位因致病因素不同差别较大;病变区域横纹肌呈“云雾状”或“毛玻璃样”改变;部分创伤性原因所致横纹肌溶解患者部分肌束体积增大,张力明显提高,形成骨筋膜室综合征.彩色多普勒示病灶区内可见少量点状血流信号或无血流信号.结论 彩色多普勒超声检查是诊断横溶解溶解症的有效方法.

  14. 彩色多普勒超声诊断异位妊娠的临床意义%Clinical assessment of ectopic pregnancy by color Doppler sonography

    Institute of Scientific and Technical Information of China (English)

    张敏

    2011-01-01

    Objective: To evaluate clinical sigiificance of color Doppler ultrasound in diagnosis of ectopic pregnancy.Methods: 176 patients with suspected ectopic pregnancy were checked by transvaginal two-dimensional ultrasound, color Doppler flow imaging (CDFI), the results of the ultrasound and clinical pathology and follow-up datas were compared.Results: 148 cases of ultrasound diagnosis of ectopic preWancy and surgical and conservative treatment of clinically diagnosed 143 cases, false positive rate was 0.2% and false negative rate 0.14%, diagnostic accuracy was 96.6%.Conclusion:Color Doppler ultrasound diagnosis of ectopic pregnancy with high accuracy, diagnosis of ectopic pregnancy is intuitive,safe, convenient and reproducible is good, it can proviod reliable clinical basis for the diagnoaia.It has important clinical value and is preferred examination method in the ditWiosis of ectopic pregnancy.%目的:探讨彩色多普勒超声诊断异位妊娠的临床意义.方法:对176例临床可疑异位妊娠的患者,采用经阴道二维超声、彩色多普勒(CDFI)进行检查,将超声结果与临床病理以及随访资料进行对比.结果:超声诊断异位妊娠148例,经临床手术及保守治疗后确诊143例,假阳性率0.2%,假阴性率0.14%,诊断准确率为96.6%.结论:彩色多普勒超声检查对异位妊娠诊断准确性高,对异位妊娠诊断直观、安全、方便、重复性好,能为临床提供可靠诊断依据,具有重要的临床应用价值,是诊断异位妊娠的首选检查方法.

  15. 彩色多普勒超声对腰疝的诊断价值%The diagnostic value of color Doppler ultrasound for lumbar hernia

    Institute of Scientific and Technical Information of China (English)

    林炳钦

    2013-01-01

    Objective To investigate the clinical value of color Doppler high-frequency ultrasound in the diagnosis of lumbar hernia.Methods The clinical data on six patients with surgically confirmed lumbar hernia who had been hosptialized during the period of January 1997 to August 2012 were retrospectively analyzed.Results Left lumbar hernia occurred in four paients and right lumbar hernia occurred in two patients; one of the six patients was complicated by acute intestinal obstruction.The color Doppler ultrasound showed part of the intraabdominal contents (visible peristaltic intestinal echo) protruded into the subcutaneous soft tissue of the iliolumbar region through the lumbar triangle gap,with interruption of the continuity of deep muscle tissue and fascia echoes.Conclusions Color Doppler ultrasound can show the hernia sac and hernial contents,which has important clinical value in the diagnosis of lumbar hernia can be used as the first choice of examination for lumbar hernia.%目的 探讨彩色多普勒高频超声对腰疝诊断的临床价值.方法 将1997年1月至2012年8月在我院经手术证实的6例腰疝患者临床资料进行回顾性分析.结果 左侧腰疝4例,右侧腰疝2例,其中1例合并急性肠梗阻,6例腰疝彩色多普勒超声表现为部分腹腔内容物(可见蠕动肠管回声)经腰三角间隙疝出于髂腰部皮下软组织内,深部肌层组织及筋膜回声连续性中断.结论 彩色多普勒超声可显示疝囊和疝内容物,对腰疝的诊断具有重要的临床价值,可作为腰疝的首选检查方法.

  16. Application of color Doppler ultrasound in the acute scrotum%彩色多普勒超声在诊断阴囊急症中的应用

    Institute of Scientific and Technical Information of China (English)

    怀玉水; 尹正银; 孙医学

    2012-01-01

    目的:探讨彩色多普勒超声(彩超)在诊断阴囊急症中的应用价值.方法:对72例彩超检查阴囊急症患者的结果进行回顾分析,与随访结果作对照.结果:确诊睾丸扭转23例,彩超正确诊断22例,声像图主要表现为睾丸位置上提、横位或斜位,形态失常,回声减低不均匀,血流信号消失.确诊睾丸附睾炎45例,彩超正确诊断44例,声像图主要表现为睾丸附睾的增大,局部回声减低,不均匀.睾丸外伤4例,彩超均正确诊断,声像图主要表现睾丸形态不完整,局部包膜回声中断,损伤区回声不均匀.结论:彩超能较可靠地诊断与鉴别阴囊急症,为临床诊断与治疗提供了重要信息.%Objective: To explore the application of color Doppler ultrasound in the acute scrotum. Methods: The results of color Doppler ultrasound examination of 72 patients with acute scrotum were retrospectively analyzed,and compared with following-up results. Results : Of 23 cases with testicular torsion,22 cases were diagnosed by ultrasonography, which ultrasonography displayed mainly raising testicular location, transverse or oblique, abnormal morphology, uneven hypoechoic and blood flow signal loss. Of 45 cases with epididymitis,44 cases were diagnosed by ultrasonography,which ultrasonography displayed mainly the increasing testis and epididymis, reducting and uneven local echo. Four cases with testicular trauma were correctly diagnosed by ultrasonography, which ultrasonography displayed mainly no complete testicular morphology, partial envelope echo interrupt and uneven echo in injury area. Conclusions: Color Doppler ultrasound can reliably diagnose and differentially diagose the acute scrotum, which can provide the important application value for clinical diagnosis and treatment.

  17. Factors influencing the structure and shape of stenotic and regurgitant jets: an in vitro investigation using Doppler color flow mapping and optical flow visualization.

    Science.gov (United States)

    Krabill, K A; Sung, H W; Tamura, T; Chung, K J; Yoganathan, A P; Sahn, D J

    1989-06-01

    To evaluate factors influencing the structure and shape of stenotic and regurgitant jets, Doppler color flow mapping and optical flow visualization studies were performed with use of a syringe model with a constant rate of ejection to simulate jets of valvular regurgitation and a pulsatile flow model of the right heart chambers to simulate jets of mild, moderate and severe valvular pulmonary stenosis. Ink-(0 to 40%) glycerol-water jets (viscosity 1 to 3.5 centiPoise) were produced by injecting the fluid at a constant rate into a 10 gallon rectangular reservoir of the same still fluid through 1.4 and 3.4 mm needles. The Doppler color flow scanners imaged the laminar jet length within 3 mm of actual jet length (2 to 6 cm) and the jet width within 2 to 3 mm of the actual jet width. Jet flows with Reynolds numbers ranging from 230 to 1,200 injected into still fluid yielded jet length/width ratios that decreased with increasing Reynolds numbers and leveled off to a length/width ratio of 5-6:1 at a Reynolds number near 600. When the fluid reservoir was swirled to better mimic the effect of flow entering the same cardiac chamber from a second source, the jets showed diminution of the jet length/width ratio and a clearly defined zone of turbulence. Studies of the pulsatile flow model were performed at cardiac outputs of 1 to 6 liters/min for the normal and each stenotic valve. Mild stenosis had an orifice area of 2.8 cm2, moderate stenosis an area of 1.0 cm2 and severe stenosis an area of 0.5 cm2. Laminar jet length represented the length of the total jet, which had a symmetric width and was measured from the valve opening to a region where the jet exhibited a spray effect. Laminar jet lengths (0.2 to 1.1 cm) were imaged by Doppler color flow mapping and optical visualization only in the moderate and severely stenotic valves and only at flows less than or equal to 3 liters/min (mean Reynolds numbers less than or equal to 3,470). Beyond this flow rate the jets exhibited a

  18. Advanced techniques in echocardiography in small animals.

    Science.gov (United States)

    Chetboul, Valérie

    2010-07-01

    Transthoracic echocardiography has become a major imaging tool for the diagnosis and management of canine and feline cardiovascular diseases. During the last decade, more recent advances in ultrasound technology with the introduction of newer imaging modalities, such as tissue Doppler imaging, strain and strain rate imaging, and 2-dimensional speckle tracking echocardiography, have provided new parameters to assess myocardial performance, including regional myocardial velocities and deformation, ventricular twist, and mechanical synchrony. An outline of these 4 recent ultrasound techniques, their impact on the understanding of right and left ventricular function in small animals, and their application in research and clinical settings are given in this article.

  19. 彩色多普勒超声诊断飞行员左冠状动脉-肺动脉瘘一例并文献复习%A case of color Doppler ultrasound diagnosis of pilot's left coronary-pulmonary artery fistula and literature review

    Institute of Scientific and Technical Information of China (English)

    吴迪; 徐蜀宣; 姚克纯; 朴龙松; 邵波; 侯双双

    2008-01-01

    Objective To explore the characteristics and diagnosis of coronary artery fistula images,and evaluate the value of color Doppler uhrasound examination for the transition pilot in medical assessment. Methods The characteristics of a pilot'S ultrasound images of left coronary artery pulmonary artery fistula were analyzed and related literature was reviewed.Investigation also conducted the necessity of applying color Doppler uhrasonography in transition pilot'S physical examinatiom Results The imagine of color Doppler ultrasound showed that the abnormal blood flow beam was tortuous between myocardia of cardiac base,and perfused into pulmonary artery via lateral wall of the main pulmonary artery.The left coronary artery-pulmonary artery fistula was diagnosed by ultrasound diagnosis.The pilot was disqualified both for flying original and transition type of aircraft. Conclusions Color Doppler uhrasonography can clearly show coronary artery fistula.include its running track,location,diameter and size.Those are consistent with the results of coronary angiography.Color Doppler echocardiography shows its clinical value in diagnosing coronary arterv fistula with a direct,safe and facile way since no specific clinical manifestations visualized at early stage.It's recommended as the first choice in clinical examination of coronary artery fistula%目的 探讨冠状动脉瘘的影像特征、鉴别诊断及彩色多普勒超声在飞行员改装体检中的医学鉴定价值.方法 分析1例飞行员左冠状动脉-肺动脉瘘超声图像特征并复习相关文献.探讨应用彩色多普勒超声检查在飞行员改装体检中的必要性.结果 彩色多普勒超声显示心底部心肌间走行迂曲的异常血流束,经主肺动脉外侧壁注入肺动脉内.超声诊断:左冠状动脉-肺动脉瘘.飞行结论:改装并原机种飞行不合格结论彩色多普勒超声检查能清晰显示冠状动脉瘘,并能追踪观察其走行、部位、内径和大小,超声

  20. Ligation or distortion of the right circumflex artery during minimal invasive mitral valve repair detected by transesophageal echocardiography.

    Science.gov (United States)

    Ender, Joerg; Gummert, Jan; Fassl, Jens; Krohmer, Eugen; Bossert, Thorsten; Mohr, Friedrich W

    2008-04-01

    A 43-year-old male patient undergoing mitral valve repair because of severe mitral regurgitation as a result of P2 prolapse was treated with insertion of neochords and a 36 Carpentier-Edwards physio-ring. After weaning from cardiopulmonary bypass, S-T elevation in leads II, III, and aVF occurred. On transesophageal echocardiography an occlusion or distortion of the circumflex artery by ring sutures was suggested, because coronary flow was no longer detected by color Doppler. Despite stable hemodynamics an angiogram was performed, which confirmed the diagnosis of stenosis of the circumflex artery. During reoperation 4 sutures placed at the P1 segment of the mitral valve annuloplasty were corrected. Transesophageal echocardiography could detect a good flow of the circumflex artery and the electrocardiographic changes disappeared.

  1. Different imaging methods in the comparative assessment of vascular lesions: color-coded duplex sonography, laser Doppler perfusion imaging, and infrared thermography

    Science.gov (United States)

    Urban, Peter; Philipp, Carsten M.; Weinberg, Lutz; Berlien, Hans-Peter

    1997-12-01

    Aim of the study was the comparative investigation of cutaneous and subcutaneous vascular lesions. By means of color coded duplex sonography (CCDS), laser doppler perfusion imaging (LDPI) and infrared thermography (IT) we examined hemangiomas, vascular malformations and portwine stains to get some evidence about depth, perfusion and vascularity. LDI is a helpful method to get an impression of the capillary part of vascular lesions and the course of superficial vessels. CCDS has disadvantages in the superficial perfusion's detection but connections to deeper vascularizations can be examined precisely, in some cases it is the only method for visualizing vascular malformations. IT gives additive hints on low blood flow areas or indicates arterial-venous-shunts. Only the combination of all imaging methods allows a complete assessment, not only for planning but also for controlling the laser treatment of vascular lesions.

  2. Spontaneous development of bilateral subdural hematomas in an infant with benign infantile hydrocephalus: color Doppler assessment of vessels traversing extra-axial spaces

    Energy Technology Data Exchange (ETDEWEB)

    Amodio, John; Spektor, Vadim; Pramanik, Bidyut; Rivera, Rafael; Pinkney, Lynne; Fefferman, Nancy [New York University Medical Center, Department of Radiology, New York, NY (United States)

    2005-11-01

    We present an infant with macrocrania, who initially demonstrated prominent extra-axial fluid collections on sonography of the brain, compatible with benign infantile hydrocephalus (BIH). Because of increasing macrocrania, a follow-up sonogram of the brain was performed; it revealed progressive enlargement of the extra-axial spaces, which now had echogenic debris. Color Doppler US showed bridging veins traversing these extra-axial spaces, so it was initially thought that these spaces were subarachnoid in nature (positive cortical vein sign). However, an arachnoid membrane was identified superior to the cortex, and there was compression of true cortical vessels beneath this dural membrane. An MRI of the brain showed the extra-axial spaces to represent bilateral subdural hematomas. The pathogenesis of spontaneous development of the subdural hematomas, in the setting of BIH, is discussed. We also emphasize that visualizing traversing bridging veins through extra-axial spaces does not necessarily imply that these spaces are subarachnoid in origin. (orig.)

  3. American Society of Echocardiography

    Science.gov (United States)

    American Society of Echocardiography Join Ase Member Portal Log In Membership Member Portal Log In Join ASE Renew Benefits Rates FASE – Fellow of the American Society of Echocardiography Member Referral Program FAQs Initiatives Advocacy ...

  4. Diagnostic value of color doppler ultrasound in endometrial lesions%彩超在子宫内膜病变鉴别诊断中的价值

    Institute of Scientific and Technical Information of China (English)

    王敏; 朱建慧

    2012-01-01

    Objective To evaluate the differential diagnostic value of color doppler ultrasound in endometrial lesions.Methods Sixty-seven patients with endometrial lesions were examined by abdominal and transvaginal ultrasound preoperatively,observing endometrial condition,all of the operation or diagnostic curettage pathological results were compared and analyzed.Results The coincidence of ultrasound diagnosis was 91.6% for endometrial polyps,90.0% for endometrial hyperplasia,87.5% for submucous myoma of uterus,93.7% for endometrial carcinoma,0% for endometrial stromal sarcoma,100% for atrophic endometritis.Conclusions The diagnostic value of color doppler ultrasound in endometrial lesions can not be replaced.%目的 探讨彩色多普勒超声对子宫内膜病变的鉴别诊断价值.方法 术前应用腹部及阴道超声观察67例子宫内膜病变患者的病灶情况,并与术后病理进行对照分析.结果 超声诊断符合率:子宫内膜息肉为91.6%,子宫内膜增生为90.0%,子宫黏膜下肌瘤为87.5%,子宫内膜癌为93.7%,子宫内膜间质肉瘤为0%,萎缩性子宫内膜炎为100%.结论 彩色多普勒超声检查对子宫内膜病变的鉴别诊断有不可替代的作用.

  5. Color Doppler ultrasound detection of uterine artery S/D, PI and RI in patients with preeclampsia and their correlation with disease severity

    Institute of Scientific and Technical Information of China (English)

    Yan-Ping Zhao

    2016-01-01

    Objective:To study color Doppler ultrasound detection of uterine artery S/D, PI and RI in patients with preeclampsia and their correlation with disease severity.Methods:Pregnant women with preeclampsia were selected as PE group, healthy pregnant women were the NOR group, color Doppler ultrasound detection was conducted to detect uterine artery S/D, PI and RI, serum was collected to detect the contents of angiogenesis-related cytokines, and placenta tissue was collected to detect the contents of proteases as well as inhibitors, oxidative stress molecules and anti-apoptotic molecules.Results: S/D, PI and RI of PE group were significantly higher than those of NOR group; serum PIGF, VEGF and PAPP-A contents of PE group were significantly lower than those of NOR group and negatively correlated with S/D, PI and RI while sVEGFR-1 and Kisspeptin-10 contents were significantly higher than those of NOR group and positively correlated with S/D, PI and RI; CTSB, CTSL, MMP3, MMP9, SOD, GST, VitC, VitE and coenzyme Q10 as well as Xiap and Survivin contents in placenta tissue of PE group were lower than those of NOR group and negatively correlated with S/D, PI and RI while TIMP1, TIMP2, TIMP3 and RECK contents were higher than those of NOR group and positively correlated with S/D, PI and RI.Conclusion: Uterine artery S/D, PI and RI significantly increase in patients with preeclampsia, and can assess the angiogenesis, cell invasion, anti-apoptosis and oxidative stress in patients.

  6. 'Focal thyroid inferno' on color Doppler ultrasonography: A specific feature of focal Hashimoto's thyroiditis

    Energy Technology Data Exchange (ETDEWEB)

    Fu, Xianshui, E-mail: fuxs1968@163.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Guo, Limei, E-mail: guolimei@bjmu.edu.cn [Department of Pathology, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Zhang, Huabin, E-mail: huabinzhang@bjmu.edu.cn [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Ran, Weiqiang, E-mail: ranwq-sina@vip.sina.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Fu, Peng, E-mail: fupeng01@gmail.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Li, Zhiqiang, E-mail: lizhq126@126.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Chen, Wen, E-mail: wendy7989@sina.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Jiang, Ling, E-mail: papayaling@yahoo.com.cn [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Wang, Jinrui, E-mail: jinrui_wang@sina.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China); Jia, Jianwen, E-mail: drjia88@sohu.com [Department of Ultrasound, Peking University Third Hospital, 49 Huayuanbeilu Road, Beijing 100191 (China)

    2012-11-15

    Purpose: To evaluate color-Doppler features predictive of focal Hashimoto's thyroiditis. Materials and methods: A total of 521 patients with 561 thyroid nodules that underwent surgeries or gun biopsies were included in this study. These nodules were divided into three groups: focal Hashimoto's thyroiditis (104 nodules in 101 patients), benignity other than focal Hashimoto's thyroiditis (73 nodules in 70 patients), and malignancy (358 nodules in 350 patients). On color Doppler sonography, four vascularity types were determined as: hypovascularity, marked internal flow, marked peripheral flow and focal thyroid inferno. The {chi}{sup 2} test was performed to seek the potential vascularity type with the predictive ability of certain thyroid pathology. Furthermore, the gray-scale features of each nodule were also studied. Results: The vascularity type I (hypovascularity) was more often seen in focal Hashimoto's thyroiditis than other benignity and malignancy (46% vs. 20.5% and 19%). While the type II (marked internal flow) showed the opposite tendency (26.9% [focal Hashimoto's thyroiditis] vs. 45.2% [other benignity] and 52.8% [malignancy]). However, type III (marked peripheral flow) was unable to predict any thyroid pathology. Importantly, type IV (focal thyroid inferno) was exclusive to focal Hashimoto's thyroiditis. All 8 type IV nodules appeared to be solid, hypoechoic, and well-defined. Using 'focal thyroid inferno' as an indicator of FHT, the diagnostic sensitivity and specificity were 7.7% and 100% respectively. Conclusions: The vascularity type of 'focal thyroid inferno' is specific for focal Hashimoto thyroiditis. Recognition of this particular feature may avoid unnecessary interventional procedures for some solid hypoechoic thyroid nodules suspicious of malignancy.

  7. Impact of nodular size on the predictive values of gray-scale,color-Doppler ultrasound, and sonoelastography for assessment of thyroid nodules

    Institute of Scientific and Technical Information of China (English)

    Yu-rong HONG; Yu-lian WU; Zhi-yan LUO; Ning-bo WU; Xue-ming LIU

    2012-01-01

    Objective:To define the roles of gray-scale,color-Doppler ultrasound,and sonoelastography for the assessment of thyroid nodule to determine whether nodule size affects the differential diagnosis of benign and malignant.Methods:A total of 243 consecutive subjects (214 women,29 men) with 329 thyroid nodules were examined by gray-scale,color-Doppler ultrasound,and sonoelastography in this prospective study.All patients underwent surgery and the final diagnosis was obtained from histopathological examination.Results:Three hundred and twenty-nine nodules (208 benign,121 malignant) were divided into small (SNs,5-10 mm,n=137) and large (LNs,>10 mm,n=192) nodules.Microcalcifications were more frequent in malignant LNs than in malignant SNs,but showed no significant difference between benign LNs and SNs.Poorly-circumscribed margins were not significantly different between malignant SNs and LNs,but were less frequent in benign LNs than in benign SNs.Among all nodules,marked intranodular vascularity was more frequent in LNs than in SNs.By comparison,shape ratio of anteroposterior to transverse dimensions (A/T) ≥1 was less frequent in LNs than in SNs.Otherwise,among all nodules,marked hypoechogenicity and elasticity score of 4-6 showed no significant difference between LNs and SNs.Conclusions:The predictive values of microcalcifications,nodular margins,A/T ratio,and marked intranodular vascularity depend on nodule size,but the predictive values of echogenicity and elastography do not.

  8. Diagnostic value of Doppler echocardiography in patients undergoing mitral and aortic valve replacement%多普勒超声心动图对二尖瓣及主动脉瓣置换术的诊断价值

    Institute of Scientific and Technical Information of China (English)

    罗丽敏; 黄枢

    2016-01-01

    Objective To explore the clinical effect of Doppler echocardiography in the diagnosis of mitral replacement surger-y.Methods 186 patients who had received mitral and aortic valve, double valve replacement with mechanical prosthetic valve in our hospital between December 2010 and December 2015 were selected.The echocardiography results of the patients were ana-lyzed before and after surgery.Results After the surgery, the LA and LV of all the patients were significantly lower than before surgery, and RV, LVEF and LVFS were significantly higher than before, with statistically significant difference ( P <0.05).For patients with mitral stenosis, the LA, LAA, LV, LAV, MPGmv, VTImv and PHTmv after the surgery were all lower than before the surgery, and the differences were significant ( P <0.05) .Postoperative EOAmv and EOAImv were shown to be significantly higher than fore surgery, where the difference was significant ( P <0.05) .For patients with mitral regurgitation, the LA and LV after the surgery were both lower than before the surgery, and the difference was significant ( P <0.05).For patients with aortic valve stenosis, the LA, LAM, IVS Vav and MPGav after the surgery were all lower than before the surgery, and the differences were significant ( P <0.05);Postoperative EOAav and EOAIav were shown to be significantly higher than fore surgery, where the difference was significant ( P <0.05).For patients with aortic regurgitation, the LA, LAMI, EOAav and EOAIav after the surgery were all lower than before the surgery, and the differences were significant ( P <0.05); Postoperative Vav and PGav were shown to be significantly higher than fore surgery, where the difference was significant ( P <0.05).The proportion of mis-match between heart valve prosthesis and mitral valve was less than that between heart valve prosthesis and aortic valve, and the difference was significant ( P <0.05) .Conclusion For patients with valvular heart disease, double valve replacement can im

  9. 经阴道彩超诊断瘢痕子宫妊娠的临床价值%Clinical value of transvaginal color doppler ultrasound in diagnosis of scar uterine pregnancy

    Institute of Scientific and Technical Information of China (English)

    顾兵

    2014-01-01

    目的:分析经阴道彩超诊断瘢痕子宫妊娠的临床价值。方法:收治瘢痕子宫妊娠患者52例,作为研究对象,所有患者均分别采取经腹部彩超和经阴道彩超检查,分析其诊断结果。结果:经腹部彩超诊断,诊断符合率73.1%;经阴道超声诊断,诊断符合率92.3%,组间对比差异有统计学意义(P<0.05)。经阴道彩超诊断,混合包块型27例,孕囊型15例,蜂窝型6例。结论:经阴道彩超可有效诊断瘢痕子宫妊娠,具有较高的确诊率,并且可直观显示病变处实际情况,为瘢痕子宫妊娠的治疗提供了必要的参考价值。%Objective:To discuss the clinical value of transvaginal color doppler ultrasound in diagnosis of scar uterine pregnancy. Methods:52 cases of patients with scar uterine pregnancy were admited and as the research objects.All cases were respectively adopted abdomen color doppler ultrasound and transvaginal color doppler ultrasound.Then analyze the diagnostic results.Results:The diagnostic accordance rate of abdomen color doppler ultrasound diagnosis was 73.1%,while the diagnostic accordance rate of transvaginal color doppler ultrasound was 92.3% .There was significant difference between the two methods(P<0.05).In the transvaginal color doppler ultrasound,27 cases were mixed bag piece type,15 cases were pregnant bursa type,and 6 cases were honeycomb type.Conclusion:Transvaginal color doppler ultrasound can effectively diagnose scar uterine pregnancy.It has a high diagnostic rate.It can display the actual situation of the lesion,and provide the necessary reference for the treatment of scar uterine pregnancy.

  10. Ecocardiografia por Doppler tecidual no diagnóstico de rejeição após transplante cardíaco Ecocardiografía con Doppler tisular en el diagnóstico de rechazo después de transplante cardíaco Tissue doppler echocardiography in the diagnosis of heart transplantation rejection

    Directory of Open Access Journals (Sweden)

    Marcos Valério Coimbra Resende

    2011-07-01

    Full Text Available FUNDAMENTO: A biópsia endomiocárdica (BEM é o método padrão-ouro para o diagnóstico de rejeição celular (RC após transplante cardíaco (TC. OBJETIVO: Testar a hipótese de que o exame de imagem por Doppler tecidual (IDT pode detectar RC > 3A e agregar informação diagnóstica, comparado ao Doppler convencional. MÉTODOS: Cinquenta e quatro pacientes com TC foram submetidos à BEM e estudo ecocardiográfico através de IDT em até 24 horas. Comparamos os pacientes com TC e RC > 3A com pacientes com TC e RC 3A em 39/129 (30,2% das BEM. O melhor preditor isolado para o diagnóstico de RC foi a a'LAT, com sensibilidade de 76,3%, especificidade de 73,8% (p = 0,001. Na análise multivariada, a a'LAT (p = 0,001, a'SEP (p = 0,002, relação e'/a' LAT (p = 0,006, relação e'Mitral/ e'LAT (p = 0,014, SINF (p = 0,009 foram preditores de RC > 3A. Obtivemos um escore com sensibilidade de 88,2%, acurácia de 79,6%, e valor preditivo negativo de 92,9% para diagnosticar RC > 3A. O Doppler convencional (fluxo mitral e pulmonar venoso não foi relevante para predizer a RC > 3A. CONCLUSÃO: O estudo de IDT agregou informação diagnóstica para predizer RC > 3A quando comparado ao Doppler convencional. O modelo baseado em IDT pode ser tornar um método em potencial para detectar RC > 3A após TC.FUNDAMENTO: La biopsia endomiocárdica (BEM es el método gold standard para el diagnóstico de rechazo celular (RC después de transplante cardíaco (TC. OBJETIVO: Testear la hipótesis de que el examen de imagen con Doppler tisular (IDT puede detectar RC > 3A y agregar información diagnóstica, comparado al Doppler convencional. MÉTODOS: Cincuenta y cuatro pacientes con TC fueron sometidos a BEM y estudio ecocardiográfico a través de IDT en hasta 24 horas. Comparamos los pacientes con TC y RC > 3A con pacientes con TC y RC 3A en 39/129 (30,2% de las BEM. El mejor predictor aislado para el diagnóstico de RC fue la a'LAT, con sensibilidad de 76

  11. Clinical Value of Color Doppler Ultrasound in Diagnosis of Lower Extremity Deep Venous Thrombosis%彩色多普勒超声诊断下肢深静脉血栓的临床价值

    Institute of Scientific and Technical Information of China (English)

    段林; 谢军

    2015-01-01

    Objective To study the color Doppler flow imaging (CDFI) Detection of deep venous thrombosis of the application. Methods 46 patients with lower extremity deep venous thrombosis (DVT) in patients using color Doppler ultrasonic diagnostic apparatus of the lower extremity deep venous acute and chronic thrombosis in patients with inspection, observation of its two-dimensional images, color flow characteristics and spectral characteristics. Results 46 patients with vascular lesions in the two-dimensional ultrasound image, color Doppler flow imaging and spectral Doppler area showed a significant specificity and sensitivity. Conclusion Color Doppler ultrasound accurate, sensitive, non-invasive diagnosis of deep venous thrombosis is one ef ective method worthy of clinical application.%目的:探讨彩色多普勒血流显像(CDFI)检测下肢深静脉血栓的应用价值。方法对46例下肢深静脉血栓(DVT)患者,采用彩色多普勒超声诊断仪对下肢深静脉急、慢性血栓患者进行检查,观察其二维图像、彩色血流特点及频谱特征。结果46例患者的病变血管在二维超声图像、彩色多普勒血流显像以及频谱多普勒方面均有显著的特异性和敏感性。结论彩色多普勒超声检查准确、敏感、无创,是诊断下肢深静脉血栓的有效方法之一,值得临床推广应用。

  12. Trans-esophageal echocardiography for tricuspid and pulmonary valves

    Directory of Open Access Journals (Sweden)

    Prabhu Mahesh

    2009-01-01

    Full Text Available Transesophageal echocardiography has been shown to provide unique information about cardiac anatomy, function, hemodynamics and blood flow and is relatively easy to perform with a low risk of complications. Echocardiographic evaluation of the tricuspid and pulmonary valves can be achieved with two-dimensional and Doppler imaging. Transesophageal echocardiography of these valves is more challenging because of their complex structure and their relative distance from the esophagus. Two-dimensional echocardiography allows an accurate visualization of the cardiac chambers and valves and their motion during the cardiac cycle. Doppler echocardiography is the most commonly used diagnostic technique for detecting and evaluating valvular regurgitation. The lack of good quality evidence makes it difficult to recommend a validated quantitative approach but expert consensus recommends a clinically useful qualitative approach. This review ennumerates probe placement, recommended cross-sectional views, flow patterns, quantitative equations including the clinical approach to the noninvasive quantification of both stenotic and regurgitant lesions.

  13. 双功能彩色多普勒评价阴茎勃起功能障碍%Evaluation of Impotence by Color Doppler Sonography

    Institute of Scientific and Technical Information of China (English)

    姚绍球; 王炼; 杨斌; 张征宇

    1993-01-01

    本文用双功能彩色多普勒超声俭查勃起功能障碍病人的阴茎血管共31例,对阴攀海锦体腔内注射罂粟碱前后的血流变化作了对比分析,结果16例为血管性阳莲,15例为非血管阳萎.血管性阳萎中,6例动脉供血不足,11例静脉机能不全(静脉漏).对阴茎血管性阳萎血流频谱改变进行了讨论与分析.%The penile vascularity of 31 patients was examined by duplex color sonography.Blood flow of penile vascularity was compared before and after papaverine imjeetion.15 cases were non-vasculogenic impotence.16 cases vaseulogenic impotence included arterial insufficiecy(5 cases)and venous leakage(11 cases).The vasculogenic impotence evaluated by duplex color Doppler was discussed and analysed.

  14. Efeito da brimonidina na circulação retrobulbar em pacientes com glaucoma: estudo com Doppler colorido Effect of brimonidine on the retrobulbar circulation in glaucomatous patients: a color Doppler study

    Directory of Open Access Journals (Sweden)

    Maria Rosa Bet de Moraes Silva

    2001-08-01

    Full Text Available Objetivo: Avaliar o efeito do tartarato de brimonidina a 0,2% tópico, instilado de 12/12 horas, na circulação retrobulbar em pacientes portadores de glaucoma. Métodos: Foram estudados os 2 olhos de 16 pacientes portadores de glaucoma primário de ângulo aberto e glaucoma crônico de ângulo estreito com iridotomia. Usando o Doppler colorido foram avaliados: velocidade sistólica máxima, velocidade diastólica final e índice de resistência das artéria central da retina, artéria ciliar posterior curta temporal e artéria oftálmica. As avaliações foram feitas antes e depois do uso da brimonidina. Resultados: O tartarato de brimonidina a 0,2% aumentou significativamente a velocidade sistólica máxima (28,24 para 34,23 cm/seg e velocidade diastólica final (6,62 para 8,10 cm/seg no olho direito e reduziu o índice de resistência (0,75 para 0,71 no olho esquerdo da artéria oftálmica. Conclusão: O tartarato de brimonidina 0,2% 2x/dia aumentou significativamente a velocidade sistólica máxima e velocidade diastólica final e reduziu índice de resistência da artéria oftálmica de pacientes glaucomatosos. Este efeito sugere que a brimonidina pode beneficiar pacientes glaucomatosos com insuficiência vascular na cabeça do nervo óptico.Purpose: To evaluate a twice daily 0.2% brimonidine tartrate effect on retrobulbar circulation with color Doppler in glaucomatous patients. Methods: Both eyes of sixteen patients with glaucoma were studied. Using a Color Doppler imaging, peak systolic, end diastolic velocity and resistive index was determined in the ophthalmic artery, central retinal artery and temporal short posterior ciliary artery before and after 0.2% brimonidine treatment. Results: 0.2% brimonidine tartrate significantly improved peak systolic (28.24 to 34.23 cm/seg and end diastolic velocities (6.72 to 8.10 cm/seg in the right eye and decreased resistive index (0.75 to 0.71 in the ophthalmic artery of the left eye. Conclusions: A

  15. Prevalência de hipertensão pulmonar avaliada por ecocardiografia Doppler em uma população de pacientes adolescentes e adultos com fibrose cística Prevalence of pulmonary hypertension evaluated by Doppler echocardiography in a population of adolescent and adult patients with cystic fibrosis

    Directory of Open Access Journals (Sweden)

    Paula Maria Eidt Rovedder

    2008-02-01

    Full Text Available OBJETIVO: Determinar a prevalência de hipertensão pulmonar (HP em pacientes com fibrose cística (FC, comparar características clínicas, escore radiológico, função pulmonar e parâmetros ecocardiográficos nos grupos com e sem HP e correlacionar achados ecocardiográficos com características clínicas, escore radiológico e função pulmonar. MÉTODOS: Estudo transversal prospectivo em pacientes clinicamente estáveis (idade > 16 anos atendidos por um programa de adultos para FC. Os pacientes foram submetidos a avaliação clínica, ecocardiografia Doppler, testes de função pulmonar e exame radiológico do tórax. RESULTADOS: Obteve-se a velocidade de regurgitação tricúspide (VRT em 37 dos 40 pacientes estudados. A prevalência de HP foi de 49% com um ponte de corte da VRT de 2,5 m/s (18 pacientes e de 30% com um ponte de corte da VRT de 2,8 m/s (11 pacientes. Os valores de saturação periférica de oxigênio (SpO2 em repouso, escore clínico, volume expiratório forçado no primeiro segundo (VEF1 e capacidade vital forçada (CVF foram significativamente menores no grupo com HP. A VRT correlacionou-se significativamente com SpO2 em repouso (p OBJECTIVE: To determine the prevalence of pulmonary hypertension (PH in patients with cystic fibrosis (CF, to compare clinical characteristics, radiographic scores, pulmonary function, and echocardiographic parameters in patients with and without PH, and to correlate echocardiographic findings with clinical characteristics, radiographic scores, and pulmonary function. METHODS: This was a prospective, cross-sectional study involving clinically stable patients (aged 16 or older enrolled in an adult CF program. The patients were submitted to clinical evaluation, Doppler echocardiography, pulmonary function tests, and chest X-rays. RESULTS: Tricuspid regurgitant jet velocity (TRV was obtained in 37 of the 40 patients studied. The prevalence of PH was 49% with a TRV cut-off of 2.5 m/s (18 patients

  16. 经颅多普勒增强实验结合经食管超声鉴别肺动静脉瘘与卵圆孔未闭所致隐源性卒中的研究%The Significance of Contrast Transcranial Doppler Combined with Transesophageal Echocardiography in the Differential Diagnosis of Cryptogenic Stroke with Pulmonary Arteriovenous Fistula and Patent Foramen Ovale

    Institute of Scientific and Technical Information of China (English)

    董培; 潘华

    2016-01-01

    目的:探讨经颅多普勒增强实验(contrast transcranial Doppler,cTCD)结合经食管超声(transesophageal echocardiography,TEE)对于鉴别肺动静脉瘘(pulmonary arteriovenous fistula,PAVF)与卵圆孔未闭(patent foramen ovale,PFO)所致隐源性卒中的意义。方法收集4例隐源性卒中患者(PAVF组2例,PFO组2例)的临床资料,行cTCD、TEE检查,比较两组的检查结果差异。结果 PAVF组cTCD结果显示患者平静呼吸时即见雨帘样栓子信号,Valsalva动作(Valsalva maneuver, VM)后栓子数量变化不明显;TEE彩色多普勒(color Doppler flow image,CDFI)未见异常,右心声学造影VM后5个心动周期左房内肺静脉开口处见大量微泡。PFO组cTCD结果显示,一例平静呼吸时可见4个栓子,VM后雨帘样栓子信号,VM作用消失后第40个心动周期有2个栓子信号。一例平静呼吸时无栓子信号,VM后可见>50个栓子信号,VM作用消失后无栓子信号。TEECDFI示原发隔继发隔间裂隙左向右过隔血流,右心声学造影VM后2~3个心动周期卵圆孔附近的左心房内见数个微气泡。结论 cTCD结合TEE鉴别诊断PFO和PAVF敏感性高,易于操作。二者主要鉴别点在于cTCD平静呼吸时是否出现大量栓子及是否受VM影响。%Objective To explore the significance of contrast transcranial Doppler (cTCD) combined with transesophageal echocardiography (TEE) in the differential diagnosis of cryptogenic stroke with pulmonary arteriovenous ifstula and patent foramen ovale. Methods Detailed clinical information were collected. TEE and cTCD were performed in 4 patients with cryptogenic stroke (2 patients with pulmonary arteriovenous fistula [PAVF] and 2 patients with patent foramen ovale [PFO]) to compare the difference in test results. Results cTCD in 2 patients with PAVF showed the following characteristics: detection of massive microembolic signals (curtain pattern) during regular

  17. Ultrasonography and color Doppler in juvenile idiopathic arthritis: diagnosis and follow-up of ultrasound-guided steroid injection in the ankle region. A descriptive interventional study

    Directory of Open Access Journals (Sweden)

    Boesen Mikael

    2011-01-01

    Full Text Available Abstract Background The ankle region is frequently involved in juvenile idiopathic arthritis (JIA but difficult to examine clinically due to its anatomical complexity. The aim of the study was to evaluate the role of ultrasonography (US of the ankle and midfoot (ankle region in JIA. Doppler-US detected synovial hypertrophy, effusion and hyperemia and US was used for guidance of steroid injection and to assess treatment efficacy. Methods Forty swollen ankles regions were studied in 30 patients (median age 6.5 years, range 1-16 years with JIA. All patients were assessed clinically, by US (synovial hypertrophy, effusion and by color Doppler (synovial hyperemia before and 4 weeks after US-guided steroid injection. Results US detected 121 compartments with active disease (joints, tendon sheaths and 1 ganglion cyst. Multiple compartments were involved in 80% of the ankle regions. The talo-crural joint, posterior subtalar joint, midfoot joints and tendon sheaths were affected in 78%, 65%, 30% and 55% respectively. Fifty active tendon sheaths were detected, and multiple tendons were involved in 12 of the ankles. US-guidance allowed accurate placement of the corticosteroid in all 85 injected compartments, with a low rate of subcutaneous atrophy (4,7%. Normalization or regression of synovial hypertrophy was obtained in 89%, and normalization of synovial hyperemia in 89%. Clinical resolution of active arthritis was noted in 72% of the ankles. Conclusions US enabled exact anatomical location of synovial inflammation in the ankle region of JIA patients. The talo-crural joint was not always involved. Disease was frequently found in compartments difficult to evaluate clinically. US enabled exact guidance of steroid injections, gave a low rate of subcutaneous atrophy and was proved valuable for follow-up examinations. Normalization or regression of synovial hypertrophy and hyperemia was achieved in most cases, which supports the notion that US is an important

  18. Hemodynamic Changes on Color Doppler Flow Imaging and Intravenous Contrast-enhanced Ultrasound for Assessing Transplanted Liver and Early Diagnosis of Complications

    Institute of Scientific and Technical Information of China (English)

    Daozhong HUANG; Yanchao CHEN; Kaiyan LI; Qingping ZHANG

    2008-01-01

    The value of color Doppler flow imaging (CDFI) and intravenous contrast-enhanced ultrasound (CEUS) for assessing the transplanted liver and early diagnosing complications by examining hemodynamic changes was discussed. Seventy-five patients with orthotopic liver transplantation (OLT) underwent CDFI. The following parameters were measured: peak systolic velocity (PS), resistance index (RI) and Doppler perfusion index (DPI) of the hepatic artery (HA), time average velocity (TAV) of portal vein (PV) and velocity of hepatic vein (HV) in different stages post-operation. And 11 patients of them received CEUS. Thirty healthy subjects were enrolled as controls. The results showed that: (1) In 23 patients without obvious complications, TAV of PV within 15 days post-operation was significantly higher than in controls (P<0.05), PS and DPI of HA within 7 days postoperation were lower, but RI was higher than in controls (P<0.05); (2) When the hepatic artery thrombosis (HAT) occurred, PS and DPI of HA were obviously decreased, but TAV of PV significantly increased like a high saw-tooth wave; (3) While rejection occurred, both TAV of PV and PS of HA were decreased with the increase in RI of HA, and the triphasic wave of HV disappeared and displayed as saw-tooth wave; (4) The incidence of biliary complications in liver transplantation was in-creased when DPI was reduced; (5) Seven cases of hepatic carcinoma relapse after OLT demonstrated hyperecho in the arterial phase and hypoecho in the portal and later phase on CEUS; (6) In 2 cases of HA thrombus, there was no visualized enhancement in arterial phase of CEUS, but enhancement during the portal vein and parenchymal phase. It was concluded that the hemodynamic changes of PV, HA and HV in the transplanted liver are valuable for assessing the transplanted liver and early diagnosing complications on CDFI and CEUS.

  19. Scar or recurrence - comparison of MRI and color-coded ultrasound with echo signal amplifiers; Narbe oder Rezidiv? Einsatz der signalverstaerkten Doppler-Sonographie im Vergleich zur MRT

    Energy Technology Data Exchange (ETDEWEB)

    Aichinger, U.; Schulz-Wendtland, R.; Lell, M.; Bautz, W. [Institut fuer Diagnostische Radiologie, Erlangen Univ., Nuernberg (Germany); Kraemer, S. [Klinik fuer Frauenheilkunde, Friedrich-Alexander-Universitaet Erlangen, Nuernberg (Germany)

    2002-11-01

    Purpose: MRI is the most reliable method to differentiate scar and recurrent carcinoma of the breast after surgical treatment. This study compares MRI and color-coded ultrasound with and without echo signal amplifier (ESA). Materials and Methods: Forty-two patients with suspected recurrent tumors were enrolled in this prospective study, with 38 patients after breast conserving therapy and 4 after mastectomy. All patients had a clinical examination, mammography (n=38), real time ultrasound (US), color-coded ultrasound without and with ESA (Levovist {sup trademark}, Schering, Berlin), and dynamic MRI. The criteria used for duplex ultrasound were tumor vascularisation and flow pattern. The results were compared with histologic findings or the results of follow-up examinations for at least 12 months. Results: The detection of penetrating or central vessels proved to be an accurate sign of malignancy in duplex ultrasound. With the application of ESA, additional vessels were detected within the lesions, increasing the diagnostic accuracy (83% with ESA versus 79% without ESA). The sensitivity of color-coded ultrasound improved from 64% to 86% with echo signal amplifier. The specificity was 86% without and 82% with echo signal amplifier. MRI was found to have a sensitivity fo 100% and a specificity of 82%. The same 5 lesions were false positive on MRI and color-coded US after Levovist {sup trademark}. No lesion without signs of vascularity within or in its vicinity was malignant. Conclusion: Color-coded ultrasound seems to be a promising method in the differentiation between scar and recurrence. Lesions with penetrating or central vessels have a high probability of being malignant, whereas lesions without any signs of vascularity inside or nearby have a high probability of being benign. Advantage of contrast-enhanced US is its ubiquitous availability. (orig.) [German] Studienziel: Die MRT zeigt in der Rezidiverkennung nach behandeltem Mammakarzinom die hoechste

  20. 灰阶超声及彩色多普勒超声诊断眼眶神经鞘瘤的价值%Value of Gray-scale Ultrasound and Color Doppler Ultrasound in the Diagnosis of Orbital Schwannoma

    Institute of Scientific and Technical Information of China (English)

    向彦霖; 罗孝勇; 陆薇

    2014-01-01

    Objective To explore the value of gray-scale ultrasound and color doppler ultrasound in the diagnosis of orbital schwannoma disease. Methods Confirmed by pathology were retrospectively analyzed eyes schwannoma of ultrasound. Results 7 cases of orbital schwannoma are characterized by a complete capsular, forms the rule, bet er sound permeability, color doppler ultrasound can display color blood flow signal.Conclusion Gray-scale sonography with color doppler ultrasound in the diagnosis of orbital schwannoma has certain diagnostic value.%目的:探讨灰阶超声及彩色多普勒超声在诊断眼眶神经鞘瘤疾病中的应用价值。方法回顾性分析7例经病理证实的眼眶神经鞘瘤的超声检查声像图特征。结果7例眼眶神经鞘瘤二维声像图均表现为有完整的包膜,形态较规则,透声性较好,彩色多普勒超声检查均可显示彩色血流信号。结果灰阶超声合并彩色多普勒超声检查在诊断眼眶神经鞘瘤中具有一定的诊断价值。

  1. Diagnostic Value of Cervical Cancer Using Three Dimensional Energy Color Doppler Ultrasound%宫颈癌应用三维能量彩超的诊断价值研究

    Institute of Scientific and Technical Information of China (English)

    吴侠

    2015-01-01

    Objective To study the three dimensional energy color doppler ultrasound is applied to the value of cervical cancer diagnosis.Methods Selected 2014 and 2015,76 patients with early cervical cancer,for patients with color doppler examination and three dimensional energy color doppler ultrasound, and record the data,stored the image.Results The differences between two testing ways was smaler,three dimensional energy color doppler ultrasound results of 58 cases of malignant tumor,18 cases of benign tumor,color doppler examination results of 47 cases of malignant tumor,29 cases of benign tumor.Conclusion The two kinds of detection methods are able to clearly show the cervical lesions,as wel as the internal blood flow of the tumor,the energies of the three dimensional colour to exceed examination used in the clinical diagnosis of cervical cancer,and complementary to the color doppler ultrasound examination,can improve the accuracy of diagnosis.%目的:研究三维能量彩超应用于宫颈癌诊断的价值;方法选取2014年~2015年的76例早期宫颈癌患者,对患者行彩色多普勒检查以及三维能量彩超检查,并记录数据、存储图像。结果两种检测方式用时差异较小,三维能量彩超检查结果为58例恶性肿瘤,18例良性肿瘤;彩色多普勒检查结果为47例恶性肿瘤,29例良性肿瘤。结论两种检测方式均能够清晰的显示出宫颈癌的病灶,以及肿瘤的内部血流情况。将三维能量彩超检查应用于宫颈癌的临床诊断中,与彩色多普勒超声检查互补,能够提高诊断的准确性。

  2. Target heart rate to determine the normal value of coronary flow reserve during dobutamine stress echocardiography

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    Rousse Maria G

    2011-04-01

    Full Text Available Abstract Background The determination of coronary flow reserve (CFR is an essential concept at the moment of decision-making in ischemic heart disease. There are several direct and indirect tests to evaluate this parameter. In this sense, dobutamine stress echocardiography is one of the pharmacological method most commonly used worldwide. It has been previously demonstrated that CFR can be determined by this technique. Despite our wide experience with dobutamine stress echocardiography, we ignored the necessary heart rate to consider sufficient the test for the analysis of CFR. For this reason, our main goal was to determine the velocity of coronary flow in each stage of dobutamine stress echocardiography and the heart rate value necessary to double the baseline values of coronary flow velocity in the territory of the left anterior descending (LAD coronary artery. Methods A total of 33 consecutive patients were analyzed. The patients included had low risk for coronary artery disease. All the participants underwent dobutamine stress echocardiography and coronary artery flow velocity was evaluated in the distal segment of LAD coronary artery using transthoracic color-Doppler echocardiography. Results The feasibility of determining CFR in the territory of the LAD during dobutamine stress echocardiography was high: 31/33 patients (94%. Mean CFR was 2.67 at de end of dobutamine test. There was an excellent concordance between delta HR (difference between baseline HR and maximum HR and the increase in the CFR (correlation coefficient 0.84. In this sense, we found that when HR increased by 50 beats, CFR was ≥ 2 (CI 93-99.2%. In addition, 96.4% of patients reached a CFR ≥ 2 (IC 91.1 - 99% at 75% of their predicted maximum heart rate. Conclusions We found that the feasibility of dobutamine stress echocardiography to determine CFR in the territory of the LAD coronary artery was high. In this study, it was necessary to achieve a difference of 50 bpm

  3. 心电图与心脏彩色多普勒超声在高血压心脏病中的诊断价值%Diagnostic value of ECG and heart color Doppler ultrasound on hypertensive heart disease

    Institute of Scientific and Technical Information of China (English)

    牛殿英

    2015-01-01

    目的 探讨心电图与心脏彩色多普勒超声在高血压心脏病中的诊断价值. 方法 选择2013年4月至2014年3月高血压心脏病患者100例为观察组,对其分别行心电图、心脏彩色多普勒超声检查,比较其阳性检出率. 选取同期行健康体检的100例正常人群为对照组,比较两组相关指标. 结果 100例高血压心脏病患者中,心脏彩色多普勒超声检出率为73.0%,心电图检出率为49.0%,二者比较差异有统计学意义( P<0.01 ). 另外,心脏彩色多普勒超声、心电图检查后均发现,两组左房内径、左房内径/主动脉根内径比较差异有统计学意义(P<0.05). 结论 心脏彩色多普勒超声相比心电图对高血压心脏病的敏感性、特异性更高,且左房内径/主动脉根内径可作为高血压心脏病诊断的特异指标.%Objective To investigate the diagnostic value of ECG and heart color Doppler ultra-sound on hypertensive heart disease .Methods From April 2013 to March 2014, 100 patients with hy-pertension heart disease were selected as the research group , the ECG, heart color ultrasound examina-tion were performed , the positive rate were compared .In 100 normal subjects and in the same period for health examination as control group , relevant indicators of the two groups were compared .Results A-mong the 100 cases of hypertensive heart disease , the detection rate of cardiac ultrasound was 73%, and 49%of the ECG 49%, the difference was significant ( P<0.01 ) .In addition , after echocardiography , electrocardiogram were found , the left atrial diameter and left atrial diameter/aortic root diameter of the two groups were significantly different ( P<0.05 ) .Conclusions The sensitivity , specificity of cardiac ultrasound is higher than ECG , and the left atrial diameter/aortic root diameter can be used as a specific index for the diagnosis of hypertensive heart disease .

  4. The effect of isometric exercise of the hand on the synovial blood flow in patients with rheumatoid arthritis measured by color Doppler ultrasound.

    Science.gov (United States)

    Ellegaard, Karen; Torp-Pedersen, Søren; Lund, Hans; Pedersen, Kirsten; Henriksen, Marius; Danneskiold-Samsøe, Bente; Bliddal, Henning

    2013-01-01

    In 90% of patients with rheumatoid arthritis (RA), the joints of the hand are affected. Studies of grip strength training have not indicated a negative effect on disease activity after training. Introduction of ultrasound Doppler (USD) to measure increased blood flow induced by inflammation has made it possible to investigate the direct effect on blood supply in the synovium after training. In this case-control study, 24 patients with RA with USD activity in the wrist joint participated. The USD activity was measured by the color fraction (CF) (CF = colored pixels/total number of pixels in ROI). Twenty-four patients were assigned to an 8-week grip strength training program. At baseline and after 8 weeks of training, an USD examination of the wrist joint was performed. In the training group, we measured grip strength and pain in the wrist joint. Six patients withdrew from the training because of pain or change in medication. Eighteen patients served as control group. There was a modest, not significant, decrease in the CF in response to training (1.86%; P = 0.08). Grip strength increased 8.8% after training (P = 0.055). Pain in motion deceased after training (P = 0.04). No difference in the CF was seen between the training and control groups, neither at baseline nor at follow-up (P = 0.82 and P = 0.48). Patients withdrawing from training had a significantly higher CF than the other patients (P > 0.001). The results in this study might indicate that the flow in the synovium assessed by USD is not affected by grip strength training.

  5. The Diagnostic Value of Superb Microvascular Imaging (SMI) in Detecting Blood Flow Signals of Breast Lesions: A Preliminary Study Comparing SMI to Color Doppler Flow Imaging.

    Science.gov (United States)

    Ma, Yan; Li, Gang; Li, Jing; Ren, Wei-dong

    2015-09-01

    The correlation between color Doppler flow imaging (CDFI) and Superb Microvascular Imaging (SMI) for detecting blood flow in breast lesions was investigated, as was the diagnostic value of SMI in differentiating benign from malignant breast lesions.These lesions were evaluated using both CDFI and SMI according to Adler's method. Pathologic examination showed 57 malignant lesions and 66 benign lesions. The number of blood vessels in a single mass was detected by 2 techniques (SMI and CDFI), and the difference between the 2 values (SMI-CDFI) was calculated. The optimal threshold for the diagnosis of malignant neoplasms and the diagnostic performances of SMI, CDFI, and SMI-CDFI were calculated.For the total lesions and malignant lesions alone, the difference between SMI and CDFI for detecting blood flow was significant (P < 0.01), but the difference was not significant for benign lesions (P = 0.15). The area under the receiver operating characteristic curve was 0.73 (95% confidence interval [CI]: 0.64-0.82) for CDFI; 0.81 (95% CI: 0.74-0.89) for SMI; and 0.89 (95% CI: 0.82-0.95) for SMI-CDFI. Furthermore, the modality of "SMI-CDFI" showed the best diagnostic performance.SMI provides further microvessel information in breast lesions. The diagnostic modality of "SMI-CDFI" can improve the diagnostic performance of ultrasound in the differentiation between benign and malignant masses.

  6. Nursing of renal biopsy guided by Color Doppler ultrasound%彩超引导下肾穿刺活检的护理体会

    Institute of Scientific and Technical Information of China (English)

    陈敏

    2011-01-01

    Objective To discuss the nursing strategies of renal biopsy guided by Color Doppler ultrasound. Methods Effective nursing was given to patients during preoperative, intraop-erative and postoperative stages. Results Sixty renal biopsy cases were done with 100% success rate and no serious complications occurred. Conclusion Effective preoperative, intraoperative and postoperative nursing intervention can decrease the incidence of complications of renal biopsy and it is the key to improve the success rate of renal biopsy.%目的 探讨对彩超引导下肾穿刺活检术患者的护理措施.方法 对患者进行术前、术中及术后的有效护理.结果60例患者肾穿刺活检术成功率为100%,无1例严重并发症发生.结论 有效的术前、术中及术后护理干预可以降低肾穿刺术后并发症的发生,是提高肾穿刺活检成功率的关键.

  7. Coronary flow velocity analysis during short term follow up after coronary reperfusion: use of transthoracic Doppler echocardiography to predict regional wall motion recovery in patients with acute myocardial infarction

    OpenAIRE

    Hozumi, T; Kanzaki, Y; Ueda, Y.; Yamamuro, A; Takagi, T; Akasaka, T; Homma, S; Yoshida, K.; Yoshikawa, J

    2003-01-01

    Background: A recent study using a Doppler guide wire showed that coronary flow velocity measurements immediately after coronary reperfusion were useful in predicting recovery of regional left ventricular function. The value of coronary flow velocity analyses during follow up after reperfusion has not been established in the clinical setting.

  8. The investigation of color Doppler signals enhancement of normal lower limb arteries with perfluorocarbon contrast agent%氟碳造影剂增强正常下肢动脉彩色血流信号的观察

    Institute of Scientific and Technical Information of China (English)

    吴凤林; 龚渭冰; 饶修平; 侯连兵

    2001-01-01

    目的:探讨氟碳声学造影剂对下肢动脉彩色血流信号的增强作用。方法:15例接受造影检查,超声造影剂经左前臂浅静脉弹丸式注射,剂量0.005ml/kg。结果:注射造影剂后下肢动脉彩色血流信号迅速增多、血流束增宽。高峰期持续时间20~30s(平均25±5s),消退期持续时间52~76s,平均61±6s。结论:氟碳声学造影剂能显著增强下肢动脉彩色血流信号,有助于了解深部血管血流状况。%Objective: To investigate the enhancement of color Doppler signals in normal lower limb arteries by perfluorocarbon contrast agent. Method: Fifteen cases were examined. The ultrasound contrast agents were administrated through forearm veins with bolus injection, the dosage was 0. 005ml/kg. Result: The color Doppler signals and flow width were all increased in normal lower limb arteries after the contrast agent was admitted. The peak period sustained 20~30s(means 25±5s), the decrease period lasted for 52~76s(means 61±6s). Conclusion: The results suggested perfluorocarbon contrast agent could give rise color Doppler signals in lower limb arteries, and help to show the color Doppler flow of deep vessels in lower limb.

  9. 彩超和钼靶X线定性诊断未触及肿块乳腺肿瘤的临床对比研究%Clinical Contrastive Study of Color Doppler Ultrasound and Molybdenum

    Institute of Scientific and Technical Information of China (English)

    吴小芹; 林瑞祯

    2012-01-01

    Objective: To evaluate the value of single or combined use of color doppler ultrasound and molyb -denum target X-ray in the early detection of non-palpable breast cancer. Methods: To analyze the results of color doppler ultrasound and/or molybdenum target X-ray in detecting 143 female patients with suspicious masses. The pathological results were included with the detection results as well. Results: The sensitivity of using color doppler ultrasound or molybdenum target X-ray alone and use of parallel or series were 81. 1% , 81. 1%, 95. 9% and 66. 2% respectively. Their specificity were 88. 4% , 85. 5% , 84. 1% and 89. 9% respectively. And their accuracy were 84. 6% , 83. 2% , 90. 2% and 77. 6% respectively. The false negative rates were 18. 9% , 18. 9% , 4. 1% and 33. 8% respectively. The under-receiver operating characteristic (ROC) curve area for the diagnosis of non-palpable breast cancer were 0. 847, 0. 833 , 0. 900 and 0. 7800 respectively. The accuracy of sequential use was lower than histopathology results (P 0. 05 ). The sensitivity of parallel application was higher than using color doppler ultrasound or molybdenum target X-ray alone and sequential use ( P 0.05),但并联的灵敏度高于彩超、钼靶X线单独使用或串联使用(P<0.01,P<0.01,P<0.001),并且假阴性率最低.结论:彩超和钼靶X线并联应用可作为未触及肿块乳腺癌的有效筛查和诊断方法.

  10. 常规超声心动图结合彩色室壁动态技术评价猪急性心肌梗死模型%Assessment of Acute Myocardial Infarction Models in Pigs by Conventional Echocardiography and Color Kinesis

    Institute of Scientific and Technical Information of China (English)

    张军辉; 李媛; 曹礼庭; 张小明; 董国礼; 顾鹏; 刘兴华

    2011-01-01

    目的 应用常规超声心动图结合彩色室壁动态(color kinesis,CK)技术对猪急性心肌梗死(acute myocardium infarction,AMI)左心室结构和整体功能进行评价.方法 采用经冠状动脉丝线堵塞法制作小型猪AMI动物模型,于术前、术后1 d应用M型超声测量左室收缩与舒张末期内径(LVEDs,LVEDd);Simpson单平面法检测左室射血分数(EF);脉冲多普勒成像技术测量二尖瓣口舒张早期血流峰值速度(E)、舒张晚期血流峰值速度(A)并计算E/A;组织多普勒成像(Doppler tissue imaging,DTI)技术测量二尖瓣环与侧壁交界处心肌组织收缩期运动速度峰值(Sm)、舒张早期运动速度峰值(Em)、舒张晚期运动速度峰值(Am)并计算Em/Am;CK检测左心室16节段室壁运动幅度(Dis).根据健康小型猪术前左心室各节段Dis的95%可信区间下限值(5 mm)判定室壁运动异常节段(心肌缺血/梗死节段),并将CK确定的异常节段与组织病理学结果进行对照分析.结果 与术前相比,术后LVEDs增大,EF降低,Sm降低,差异均有统计学意义(P<0.05).与组织病理学结果对照分析,CK对心肌缺血/梗死节段判定的敏感性为86.67%,特异性为90.12%,准确性为89.58%.结论 常规超声心动图结合CK能对猪AMI后结构及整体心功能进行定量分析.%Objective To assess the structure and the global function of left ventricular after acute myocardium infarction(AMI) in pigs by conventional echocardiography and color kinesis(CK). Methods The coronary arteries of pigs were obstructed by thread to prepare model AMI. Before and one day after the procedure, left ventricular end systolic diameter(LVEDs) and left ventricular end diastolic diameter(LVEDd) were detected and left ventricular ejection fraction(EF) was measured with Simpson single-plane methods. Pulsed wave Doppler imaging was used to measure the early-diastolic and late-diastolic maximal velocity of mitral flow (E, A) and calculate the E/A ratio. Doppler

  11. Biplane transesophageal color-flow Doppler imaging in assessing severity of mitral regurgitation : Influence of hemodynamic circumstances and mechanism of regurgitation

    NARCIS (Netherlands)

    Pieper, EPG; Hellemans, IM; Hamer, HPM; Ravelli, ACJ; Jaarsma, W; Breekland, A; Lie, KI; Visser, CA

    1996-01-01

    Objective: To determine the value of biplane transesophageal echocardiography in the assessment of severity of mitral regurgitation compared with left ventricular angiography. Design: Prospective study of consecutive patients. Setting: Two university hospitals, one community hospital. Participants:

  12. The Clinical Value of Color Doppler Ultrasound Diagnosis In Placental Hemorrhage%彩色多普勒超声诊断胎盘内出血的临床价值

    Institute of Scientific and Technical Information of China (English)

    刘建琴

    2014-01-01

    目的:探讨彩色超声诊断胎盘内出血的价值。方法总结分析10例胎盘异常的超声图像,确定超声诊断的特征声像图。结果超声诊断和术后临床诊断的符合率为80﹪。结论彩色超声检查是及时准确诊断胎盘内出血的无创检查方法,对于指导临床急诊救治,减少并发症有重要意义。%Objective:To explore the clinical value of Color Doppler Ultrasound diagnosis in placental hemorrhage. Methods:Analyze 10 cases of placental hemorrhage and identify the characteristics graph of Color Doppler Ultrasound. Results:In 10 cases undergoing ultrasound diagnosis,the coincidence of ultrasound diagnosis with postoperative clinical diagnosis was 80%. Conclusion:Color Doppler Ultrasound diagnosis is timely,accurate and non-invasive examination in placental hemorrhage.It is significant for guiding clinical emergency and reducing complications.

  13. Ultra-sonografia transvaginal com doppler colorido para seleção das pacientes para tratamento conservador da gravidez ectópica íntegra Transvaginal ultrasonography with color doppler to select the patients for conservative treatment of unruptured ectopic pregnancy

    Directory of Open Access Journals (Sweden)

    Julio Elito Junior

    1999-04-01

    Full Text Available Objetivo: avaliar a eficiência da ultra-sonografia (US transvaginal com Doppler colorido para a previsão dos resultados do tratamento sistêmico da gravidez ectópica íntegra com dose única de metotrexato. Pacientes e método: vinte pacientes com diagnóstico de gravidez ectópica foram incluídas no estudo. Os critérios de inclusão foram: estabilidade hemodinâmica, massa anexial com diâmetro Purpose: to evaluate the efficacy of color Doppler in the prediction of results of the systemic treatment of unruptured ectopic pregnancy with a single dose of methotrexate. Methodology: twenty patients with a diagnosis of ectopic pregnancy were included in the study. The inclusion criteria were: hemodynamic stability, adnexal mass < 5.0 cm and decline of the titers of beta-hCG less than 15% in an interval of 24 h. The exclusion criteria were hepatic or renal disease and blood dyscrasias. Follow-up was by serial determinations of beta-hCG on days 4 and 7 after the beginning of the treatment, and weekly until the titers were negative. The patients were classified into 3 groups according to color Doppler: high risk (trophoblastic flow covering more than 2/3 of the mass, medium risk (when trophoblastic flow compromised 1/3 to 2/3 of tubal mass and low risk (when trophoblastic flow covered less than 1/3 of the mass. Results: the success of the treatment with a single dose was 75% (15/20; when a second dose of MTX was used, the success rate was 85%. When comparing color Doppler with the results of the medical treatment, we had high risk in 4 patients and in all the treatment failed; medium and low risk in 16 patients, and in 15 the treatment was successful. Conclusion: color Doppler showing high risk indicated an unfavorable situation for the medical treatment with MTX, while medium and low risk in color doppler were favorable situations for the clinical treatment. However, these results should always be analyzed in association with the evolution curve

  14. OCT angiography and Color Doppler Imaging in the study of hemoperfusion in the retina and optic nerve in POAG

    Directory of Open Access Journals (Sweden)

    N. I. Kurysheva

    2016-01-01

    Full Text Available Purpose: To evaluate the hemoperfusion of Optic Nerve Disk (OND, peripapillary and macular areas, and retrobulbar blood flow in patients with primary open-angle glaucoma using optical coherence tomography with angiography (OCT-A and Сolor Doppler Imaging (CDI.Patients and Methods: 65 eyes of patients with primary open angle glaucoma (POAG and 22 eyes of age-matched healthy subjects were examined using the SD-OCT-А (RtVue xR Avanti with the AngioVue software. Retinal Thickness and Angio Flow Density (AFD were measured. AFD Disc and Peripapillary Flow Density were measured in OND and in peripapillary area. AFD Retina were evaluated in Macula inсluding Fovea- and Parafovea regions (superficial and deep of the inner retinal layers. Ophthalmic Artery (OA, Central Retinal Artery (CRA, Posterior short Ciliary Arteries (PCA, Central Retinal Vein (CRV and Vortex Vein (VV were measured by CDI. Statistical analysis was performed using SPSS version 21 and MASS library of language R. The value of each diagnostic indicator (z-value was calculated with the Wilcoxon-Mann-Whitney test and the area under the receiver operating characteristic curve (AUC.Results: Both OCT-A and CDI indicators were reduced in glaucoma compared to healthy eyes. The following indicators had the largest AUC and diagnostic value (z-value to discriminate the early glaucoma from normal eyes: AFD Retina Superficial Whole En Face (z = 3,83, p<0,0001; AUC 0,8 (0,69‑0,90, AFD Retina Deep Whole En Face (z = 3,31, p = 0,0007; AUC 0,76 (0,64‑0,88, Peripapillary Vessel Density (z = 3,2, p = 0,001; AUC 0,75 (0,63‑0,87, end-diastolic flow velocity in AO (z = 3,03, p = 0,002; AUC 0,74 (0,61‑0,86 and in TPCA (z = 2,78, p = 0,005; AUC 0,72 (0,58‑0,86; and to discriminate the early glaucoma from the advanced and far advanced stages: AFD Disc Peripapillary Inferior Temporalis (z = 5,61, p<0,0001; AUC 0,94 (0,86‑1,0 and the mean flow velocity in the CRA (z = 4,16, p<0

  15. Ecografia transfontanelar com fluxo a cores em recém-nascidos prematuros Intracranial blood flow velocities evaluated by color doppler (duplex in preterm infants

    Directory of Open Access Journals (Sweden)

    Marcelo Cardoso de Assis

    2004-03-01

    intracranial hemorrhage. They were subjected to sequencial measurements of blood flow velocities in the intracranial arteries. The gestational age of the whole group varied from 28 to 36 weeks and birth weights between 720 and 2530 g. The diagnosis of the intracerebral hemorrhages in these preterm neonates were done using high resolution gray and color scale transfontanellar ultrasonography brain scans . The ultrasound evaluations were performed in the initial 3rd, 7th and 14th day of life. The 73 preterm infants were evaluated with sequencial measurements of blood flow velocity in the intracranial arteries using the Doppler technique through the anterior fontanelle. Doppler evaluation of the cerebral vessels were performed on days 3, 7, 30 and 90 of life. These evaluations were performed in the six intracranial arteries, meaning: right and left anterior and middle cerebral arteries and right and left internal carotid arteries. Doppler recordings were made using Duplex Color-Doppler system, pulse echo probe of 3,5; 5,0 and 7,5 MHz. Measuring the blood flow velocity in the cerebral arteries we obtained a maximum systolic velocity and end diastolic velocity with a rate in meters per second (m/s for each cardiac cycle. After obtaining these numerical values for these velocities we obtained the resistance index (RI or Pourcelot index. In a progressive way as the resistance index (RI values were being obtained in each stage of this study they were also being checked in the cerebral arteries of healthy preterm infants and infants with intracranial hemorrhages. We also analyzed in a comparative method the values of the resistive index between the two groups of preterm infants observing their behaviour.The results obtained when comparing the RI values in the various arteries during the different stages of the study permitted us to conclude that the RI values of healthy pre-term infants were always larger than the RI values of pre-term infants with intracranial hemorrhage. We also

  16. Association Between Echocardiography Laboratory Accreditation and the Quality of Imaging and Reporting for Valvular Heart Disease.

    Science.gov (United States)

    Thaden, Jeremy J; Tsang, Michael Y; Ayoub, Chadi; Padang, Ratnasari; Nkomo, Vuyisile T; Tucker, Stephen F; Cassidy, Cynthia S; Bremer, Merri; Kane, Garvan C; Pellikka, Patricia A

    2017-08-01

    It is presumed that echocardiographic laboratory accreditation leads to improved quality, but there are few data. We sought to compare the quality of echocardiographic examinations performed at accredited versus nonaccredited laboratories for the evaluation of valvular heart disease. We enrolled 335 consecutive valvular heart disease subjects who underwent echocardiography at our institution and an external accredited or nonaccredited institution within 6 months. Completeness and quality of echocardiographic reports and images were assessed by investigators blinded to the external laboratory accreditation status and echocardiographic results. Compared with nonaccredited laboratories, accredited sites more frequently reported patient sex (94% versus 78%; Pheart disease. Future quality improvement initiatives should highlight the importance of high-quality color Doppler imaging and echocardiographic quantification to improve the accuracy, reproducibility, and quality of echocardiographic studies for valvular heart disease. © 2017 American Heart Association, Inc.

  17. Clinical value of the placental abruption diagnosed by color Doppler ultrasonic combining with enhancement Doppler E-flow imaging%彩色多普勒超声结合增强型能量多普勒成像诊断胎盘早剥的临床价值探讨

    Institute of Scientific and Technical Information of China (English)

    魏达友; 梁玉婷; 蔡永秋; 巫朝君; 刘思怡; 吴绍锋

    2008-01-01

    目的 探讨彩色多普勒超声结合增强型能量多普勒(E-Flow)成像诊断胎盘早剥,尤其是轻型胎盘早剥的声像图特点,为临床提供有效的诊断依据.方法 应用彩色多普勒超声结合E-Flow对50例重型胎盘早剥、23例轻型胎盘早剥的声像图及临床结局进行分析研究.结果 50例重型胎盘早剥的彩色多普勒超声结合E-Flow的诊断与临床及产后病理诊断相符,诊断符合率100%;23例轻型胎盘早剥的彩色多普勒超声结合E-Flow的诊断与临床及产后病理诊断符合19例,诊断符合率83%,漏诊、误诊4例(17%).73例胎盘早剥患者中剖宫产60例,阴道分娩13例.结论 增强型能量多普勒超声结合彩色多普勒超声成像技术对重型胎盘早剥的诊断准确率高,为轻型胎盘早剥的诊断提供了新手段,并能动态监测轻型胎盘早剥的转归.%Objective To explore the ultrasonographical characteristics of placental abruption, especially the light placental abruption that was diagnosed by color Doppler ultrasonic combining with enhancement Doppler E-flow imaging, providing diagnosis data for clinical treatment. Methods With color Doppler ultrasonic and enhancement Doppler E-flow imaging, an analysis was made on the ultrasonography and clinical result of 50 patients with heavy placental abruption and 23 patients with light placental abruption. Results The diagnosis and clinical treatment of 50 patients with heavy placental abruption who had been diagnosed by color Doppler ultrasonic combining with enhancement Doppler E-flow imaging were in conformity with the postnatal pathological diagnosis. The coincidence rate in diagnosis was 100%. Of 23 patients with light placental abruption who had been diagnosed by color Doppler ultrasonic combining with enhancement E-flow Doppler imaging, 19 cases' diagnosis and clinical treatment were in accordance with their postnatal pathological diagnosis and the coincidence rate was 83%, 4 cases were

  18. Usefulness and limitations of transthoracic echocardiography in heart transplantation recipients

    Directory of Open Access Journals (Sweden)

    Galderisi Maurizio

    2008-01-01

    Full Text Available Abstract Transthoracic echocardiography is a primary non-invasive modality for investigation of heart transplant recipients. It is a versatile tool which provides comprehensive information about cardiac structure and function. Echocardiographic examinations can be easily performed at the bedside and serially repeated without any patient's discomfort. This review highlights the usefulness of Doppler echocardiography in the assessment of left ventricular and right ventricular systolic and diastolic function, of left ventricular mass, valvular heart disease, pulmonary arterial hypertension and pericardial effusion in heart transplant recipients. The main experiences performed by either standard Doppler echocardiography and new high-tech ultrasound technologies are summarised, pointing out advantages and limitations of the described techniques in diagnosing acute allograft rejection and cardiac graft vasculopathy. Despite the sustained efforts of echocardiographic technique in predicting the biopsy state, endocardial myocardial biopsies are still regarded as the gold standard for detection of acute allograft rejection. Conversely, stress echocardiography is able to identify accurately cardiac graft vasculopathy and has a recognised prognostic in this clinical setting. A normal stress-echo justifies postponement of invasive studies. Another use of transthoracic echocardiography is the monitorisation and the visualisation of the catheter during the performance of endomyocardial biopsy. Bedside stress echocardiography is even useful to select appropriately heart donors with brain death. The ultrasound monitoring is simple and effective for monitoring a safe performance of biopsy procedures.

  19. Avaliação da anatomia arterial no pé torto congênito através da ultrassonografia com doppler colorido Evaluation of arterial anatomy in congenital clubfoot with color doppler ultrasound

    Directory of Open Access Journals (Sweden)

    José Antonio Pinto

    2008-01-01

    Full Text Available OBJETIVO: Avaliação ultrassonográfica das artérias tibial anterior e posterior no pé torto congênito (PTC. MATERIAL E MÉTODO: Foram incluídos 20 pacientes portadores de PTC idiopático compreendendo 18 casos unilaterais e dois bilaterais, sendo que 17 pacientes foram submetidos a tratamento cirúrgico e três a tratamento conservador. Todos os pacientes apresentavam pés plantígrados e foram submetidos à avaliação clínica e radiográfica, seguido pelo exame de ultrassom Doppler colorido (UDC, visando a identificação das artérias tibiais anterior e posterior na altura do tornozelo. O nível funcional foi classificado pelos critérios de Lehman. RESULTADOS: Nesta série de 20 pacientes, somente em um não foi identificada a artéria tibial anterior. Nos 12 pacientes submetidos à mensuração de fluxo e calibre pelo UDC, foi encontrada uma correlação positiva entre o grau funcional do PTC e o calibre da artéria tibial anterior. Não houve redução estatisticamente significante entre o fluxo e calibre da artéria tibial anterior do lado normal em comparação com o lado alterado (nos casos de doença unilateral. CONCLUSÕES: Não houve alteração significativa da morfologia e fluxo arterial quando comparamos os lados afetado e normal. Além disso, quanto melhor o resultado clínico da correção do PTC, maior foi o calibre da artéria tibial anterior.OBJECTIVE: This investigation intended to evaluate anterior and posterior tibial arteries at the ankle joint level in congenital clubfoot, by using color Doppler ultrasound (CDU. MATERIAL AND METHOD: Twenty patients with idiopathic clubfoot were selected, from which 18 had unilateral involvement and two had bilateral involvement. Of the 18 patients with unilateral clubfoot, 16 went through surgical treatment and the other two were submitted to conservative treatment with serial casting. Of the bilateral cases, one patient was treated surgically and the other was treated with serial

  20. 彩色多普勒超声诊断甲状腺肿瘤的临床探析%Clinical Investigation on Color Doppler Ultrasound Examination in Diagnosis of Thyroid

    Institute of Scientific and Technical Information of China (English)

    申忠梅

    2015-01-01

    目的:探析甲状腺肿瘤应用彩色多普勒超声诊断的临床价值。方法选取2013年11月~2014年11月间我院收治的甲状腺肿瘤患者44例,分别给予颈部X线与超声检查,比较两组检查结果。结果彩色多普勒超声检查的特异性(95.45%)与灵敏度(81.82%)显著高于颈部X线,差异有统计学意义(P<0.05)。结论甲状腺肿瘤应用彩色多普勒超声检查快速、安全、敏感、准确,对疾病诊断、定位与术前评估意义重大,操作简单,值得推广。%Objective To investigate the clinical value of color Doppler ultrasound examination in diagnosis of thyroid tumor. Methods Select 44 thyroid tumor patients who are received and diagnosed in hospital from November 2013 to November 2014 and give these patients with neck X-ray examination and color Doppler ultrasound examination respectively. And then compare examination results of these two groups. Results Color Doppler specificity (95.45%)and its sensitivity(81.82%)are much higher than specificity and sensitivity of X-ray examination,and such a differential has statistic value (P<0.05). Conclusion Color Doppler ultrasound examination is of fast-speed,safety,sensitivity and accuracy in diagnosis of thyroid tumor,and in addition,it is of significance in diagnosis and orientation and preoperative assessment of thyroid tumor;color Doppler ultrasound examination is easy to operate and it is quite worthwhile to be clinical y applied.

  1. Saline contrast echocardiography for the detection of patent foramen ovale in hypoxia: a validation study using intracardiac echocardiography.

    Science.gov (United States)

    Fenster, Brett E; Curran-Everett, Douglas; Freeman, Andrew M; Weinberger, Howard D; Kern Buckner, J; Carroll, John D

    2014-04-01

    Although the "3 beat rule" is widely utiized to discriminate patent foramen ovale (PFO)-mediated right-to-left shunt (RTLS) from intrapulmonary RTLS using saline contrast transthoracic echocardiography (SCE), SCE diagnostic performance has yet to be validated using an invasive intracardiac standard. Percutaneous PFO occluder placement was recently shown to ameliorate hypoxia in patients with suspected PFO-mediated RTLS. We evaluated the ability of SCE to predict PFO presence and size using intracardiac echocardiography (ICE) as a gold standard in a hypoxic cohort. Sixty-three hypoxic patients with suspected PFO-mediated RTLS who underwent SCE at rest, with Valsalva maneuver, and with cough prior to ICE were evaluated retrospectively. PFO RTLS was defined by ICE findings including PFO anatomy, RTLS by saline contrast and color Doppler, and probe patency. SCE shunt severity and timing of left heart saline target appearance were compared to the presence of ICE-defined PFO RTLS. Forty-seven patients (75%) met criteria for PFO-mediated RTLS. A 4 beat cutoff for resting SCE provided optimal diagnostic performance for detection of PFO-mediated RTLS with a 71% sensitivity, 94% specificity, and 97% positive predictive value (PPV). Valsalva and cough maneuvers improved sensitivity compared to rest SCE (89% and 80%, respectively). Valsalva SCE shunt severity more accurately predicted PFO size than resting SCE. In contrast to the widely accepted "3 beat rule," resting SCE for the detection of PFO RTLS in a hypoxic population performs optimally using a 4-cycle cutoff with both excellent specificity and PPV. © 2013, Wiley Periodicals, Inc.

  2. 彩超顺序分段分析法对矫正型大动脉转位的诊断价值%Value of Sequential Color Doppler Ultrasound Segmentation Analysis in Diagnosis of Corrected Transposition of Great Arteries

    Institute of Scientific and Technical Information of China (English)

    陈慧倩; 崔亮; 王卫真; 叶雪存

    2014-01-01

    目的:探讨彩色多普勒超声心动图顺序分段分析法对矫正型大动脉转位(CTGA)的诊断价值。方法对11例 CTGA 患者采用彩色多普勒超声心动图顺序分段分析法判定心脏位置、连接关系及心内结构、功能和血流信号的变化。结果11例 CTGA 患者中,彩色多普勒超声心动图顺序分段分析法对 CTGA 的诊断符合率达100.0%(11/11)。SLL 型(心脏位置正常)9例(81.8%),IDD 型(镜面右位心)2例(18.1%)。SLL 型合并室间隔缺损9例、合并肺动脉狭窄7例和合并解剖三尖瓣中度反流8例;合并房间隔缺损4例,其中 SLL 型3例,IDD 型1例;IDD 型合并室间隔缺损、肺动脉狭窄和解剖三尖瓣中度反流1例。均经手术证实。结论CTGA 的超声表现错综复杂,心房与心室连接不一致和心室与大动脉连接不一致是诊断 CTGA 的关键,运用其特征性能有效提高诊断符合率,部分替代心血管造影等检查,为心胸外科提供重要的诊断依据。%Objective To evaluate the value of sequential color Doppler echocardiography (CDE)segmentation analysis in the diagnosis of corrected transposition of great arteries(CT-GA).Methods Sequential CDE segmentation analysis was used to determine heart position,con-nection relation,intracardiac structure,heart function and blood flow signal changes in 11 patients with CTGA.Results The diagnostic accordance rate of sequential CDE segmentation analysis was 100.0% (11/11 ).Among the 11 patients,SLL transposition (normal heart position)was found in 9(81.8%),and IDD transposition(mirror-image dextrocardia)in 2(18.1%).In addition, SLL transposition was complicated by ventricular septal defect in 9 patients,by pulmonary steno-sis in 7,and by moderate anatomical tricuspid regurgitation in 8.Among the 4 CTGA patients with atrial septal defect,SLL transposition was found in 3 and IDD transposition in 1.Further-more,IDD transposition was

  3. 四维彩超检查在胎儿先心病诊断中的临床应用%Clinical Application of Four-dimensional Color Doppler Ultrasonography in the Diagnosis of Fetal Congenital Heart Disease

    Institute of Scientific and Technical Information of China (English)

    谢广平; 贾立娟; 杜学谦

    2016-01-01

    ABSTRACT:Objective To analyze the application value of four-dimensional color Doppler ultrasonography in the diagnosis of fetal congenital heart disease, and to provide a reliable reference for clinical practice. Methods The research subjects in this study were 90 cases of fetus,whose gestational age were 25 to 40 weeks. All subjects were examined by four-dimensional color Doppler ultrasound. The results of four-dimensional color Doppler ultrasound examination of these studies subjects were retrospective analyzed,such as fetal heart rate, the four chamber view, the lfow of the chamber, etc..At the same time, the results of follow-up were retrospectively analyzed. The follow-up results and contrast the four-dimensional color Doppler ultrasound examination results were compared.The accuracy of the four-dimensional color Doppler ultrasound examination for diagnosis of fetal congenital heart disease were calculated ,in order to investigate the application value of four-dimensional color Doppler ultrasonography in the diagnosis of fetal congenital heart disease. Results In the study, 6 cases were diagnosed as congenital heart disease by four-dimensional color Doppler ultrasonography. Follow up results showed that 8 cases were eventually diagnosed as congenital heart disease in the study. By comparing the four-dimensional color Doppler ultrasound examination results and follow-up results, the diagnosis rate of four-dimensional color Doppler ultrasound examination was 75%, 1 cases was misdiagnosis, 1 cases was missed diagnosis. Conclusion Prenatal four-dimensional color Doppler ultrasound examination can improve the diagnostic rate of fetal congenital heart disease, and provide a reliable reference for the early intervention of congenital heart disease. Four-dimensional color Doppler ultrasound examination can be widely used in the diagnosis of fetal congenital heart disease, can provide referenc e for the early diagnosis and intervention of congenital heart disease

  4. 彩色多普勒检测胎儿三尖瓣反流产前筛查的临床意义%Clinical significance of color doppler detection in prenatal screening of fetal tricuspid regurgitation

    Institute of Scientific and Technical Information of China (English)

    王京平; 王萍平; 郑来坤

    2014-01-01

    目的:探讨彩色多普勒在中晚孕胎儿三尖瓣反流产前筛查中的临床意义及鉴别诊断。方法选择2009年3月~2012年6月就诊的11265例中晚期孕妇。观察其胎儿三尖瓣口彩色多普勒反流情况及脉冲多普勒评估流速、压差,追踪随访。结果1306例胎儿监测到三尖瓣反流,发生率11.6%。其中反流速度大于2.8m/s者46例,小于2.8m/s者1261例。结论彩色多普勒能够敏感地检出胎儿三尖瓣反流,对胎儿某些心脏疾病的诊断提供重要临床价值。%Objective To investigate the clinical significance and differential diagnosis of color doppler in the prenatal screening of middle and late pregnancy fetal tricuspid regurgitation. Methods 11265 middle and late pregnancy gravidae treated from March 2009 to June 2012 were selected. The color doppler tricuspid regurgitation situation of their fetuses was observed and the pulse doppler was used to evaluate the flow rate and pressure difference;the fetuses received follow-up visits. Results 1306 fetuses showed tricuspid regurgitation, with the incidence of 11.6%.Among them, 46 fetuses had a backflow rate over 2.8m/s and 1261 fetuses less than 2.8m/s. Conclusion Color doppler can detect fetal tricuspid regurgitation sensitively and is therefore of important clinical value for some fetal heart diseases.

  5. 肾脏巨大错构瘤的超声诊断探讨%Discussion on the diagnosisudy of giant renal hamartoma with color Doppler ultrasound

    Institute of Scientific and Technical Information of China (English)

    张清连; 张灌生; 钟跃

    2012-01-01

    Objective To discuss the value of color Doppler ultrasound on the diagnosis of giant (larger than 10cm) renal hamartoma (GRH). Methods Ultrasonic images of 9 cases with GRH confirmed by pathology after operation were retrospectively studied. Results 7 cases were diagnosed correctly by ultrasound (7/9), 1 case were mistaken as renal carcinoma (1/9) and 1 case was mistaken as adrenal gland fat tumor (1/9) in ultrasound diagnosis. The GRH shape was ellipse with clear margins. The GRH were showed high echo in 6 cases, middle echo in 2 cases and low echo in 1 case. That high alternate with low echoes were composed "stripe sign" were observed in all high echo and middle echo GRH, and there were a few bloodstream signal in these masses. The low echo GRH were not observed "stripe sign", and there were more bloodstream signal. That the protruding parts of GRH pressed the kidneys to form "press sign" were observed in all cases. The GRH with spontaneous rupture were observed cystic area in 2 cases. Both kidneys had many high echo small hamartoma sign in 6 cases. Conclusion The GRH has some features in ultrasonic images, color Doppler ultrasound has important diagnostic value for GRH, it could be considered as the first diagnostic method before operation.%目的 探讨彩色多普勒超声诊断肾脏巨大错构瘤(最大径线大于10cm)的临床应用价值.方法 回顾性分析经手术病理证实的9例肾脏巨大错构瘤的超声检查资料,并对其超声表现特征进行分析.结果 9例肾脏巨大错构瘤超声诊断正确7例(77.78%),1例误诊为肾癌(11.11%),1例误诊为肾上腺脂肪瘤(11.11%).肾脏巨大错构瘤的声像大致呈椭圆形,轮廓清晰,6例呈高回声,2例呈中等回声,1例呈低回声.高回声及中等回声肿块内皆观察到了高低回声相间的“条纹征”,且肿块内血流稀少.低回声肿块内未见“条纹征”,血流较多.9例肾脏巨大错构瘤皆观察到了肿瘤的外突部分对

  6. Application of color Doppler ultrasound in screening for fetal malformation%彩色多普勒超声在胎儿畸形筛查中的应用

    Institute of Scientific and Technical Information of China (English)

    黄嘉静

    2015-01-01

    目的:研究彩色多普勒超声在胎儿畸形筛查中的应用。方法选择2012年2月~2014年7月期间在我院进行分娩或者引产的胎儿畸形产妇共计90例。所有产妇在产前均实施过彩色多普勒超声的产前检查。对胎儿畸形的种类进行观察,以及彩色多普勒超声在胎儿畸形筛查中的诊断符合率,对不同时间段胎儿畸形筛选情况进行分析。结果彩色多普勒在胎儿畸形筛查中对无脑畸形、双胎畸形、心血管畸形、脑脊膜膨出、脑积水、泌尿系统畸形、消化道畸形、胸腹腔肿瘤以及脊柱裂方面均具有较高的诊断符合率。孕16~25周胎儿畸形筛选所占的比例75.56%显著高于孕26~35周和孕36~40周的比例,差异有统计学意义(P <0.05)。结论彩色多普勒超声在胎儿畸形筛查中是最为有效的方法,彩超操作医师在检查中应该从系统、全面、多方位、多角度出发,以此减少胎儿畸形筛选中的误诊与漏诊,进一步提高彩色多普勒超声在胎儿畸形筛查中的诊断率。%Objective To investigate the application of color Doppler ultrasound in screening for fetal malformation. Methods 90 cases of patients with maternal fetal malformation in childbirth or induced abortion were selected in our hospital from February 2012 to July 2014.All maternal prenatal prenatal examination were implemented by color Doppler ultrasound.The types of fetal malformations were observed,consistent with the diagnosis rate and color Doppler ultrasound in screening for fetal malformation,fetal malformation screening were analyzed at the different time. Results The rate of diagnosis with color Doppler in the diagnosis of fetal malformation of anencephaly,cardiovascular malformation,cerebral meningocele,hydrocephalus,malformation of the urinary system,digestive tract malformation,thoracic and abdominal tumor,spinal bifida all have good.At 16-25 weeks of gestation

  7. 彩色多普勒超声诊断下肢静脉血栓临床价值%Clinical value of color doppler ultrasound in the diagnosis of thrombus of lower extremity veins

    Institute of Scientific and Technical Information of China (English)

    巫朝君; 黄友清; 黄智勇

    2014-01-01

    Objective To investigate the clinical value of color doppler ultrasound in the diagnosis of thrombus of lower extremity veins. Methods A total of 84 patients with thrombus of lower extremity veins(DVT) underwent color Doppler ultrasound and digital subtraction angiography (DSA), and analyzed the test results comparatively. Results Color doppler ultrasound diagnosed deep vein thrombosis(DVT) in 68 cases of all 84 patients, 49 cases were in the left low-er extremity (72.1%), 19 cases were in the right lower extremity (27.9%),patients were in the left more than in the right;In all 68 patients,39 cases were in acute stage,20 cases were in sub acute stage, 9 cases were in chronic period. DSA diagnosed lower extremity DVT in 66 cases in 68 cases diagnosed by color doppler ultrasound,DSA diagnosed lower extremity DVT in 64 cases, 4 cases that examined by DSA were negative. Color doppler ultrasound diagnosed normal in 18 cases, DSA found lower extremity DVT in 2 cases. Compared with the results of DSA examination, the sensitivity and the specificity of color doppler ultrasound for diagnosing DVT were 96.97% and 88.9%, the diagnostic consistency of both methods was high (Kappa=0.78). Conclusion Color doppler ultrasound is simple, fast and repro-ducible, it is high in consistency with DSA and has important value in the diagnosis of lower extremity DVT.%目的:探讨彩色多普勒超声对下肢静脉血栓(DVT)的诊断价值。方法对84例疑诊为下肢DVT的患者分别采用彩色多普勒超声和数字减影血管造影(DSA)检查,对检查结果进行对比分析。结果所有84例患者中,彩超诊断下肢DVT68例,左下肢49例(72.1%),右下肢19例(27.9%),左侧明显多于右侧;所有68例患者中,急性期39例,亚急性期20例,慢性期9例。DSA检查诊断下肢DVT66例。彩超诊断68例中,64例DSA检查诊断为下肢DVT,4例DSA检查阴性。彩超检查正常18例中,2例经DSA检查诊断为下肢DVT

  8. Using the MEM-net program to report on mapping the EchoColorDoppler assessment for chronic cerebro spinal venous insufficiency

    Directory of Open Access Journals (Sweden)

    Mandolesi S

    2014-07-01

    Full Text Available Sandro Mandolesi,1 Aldo d’Alessandro,2 Ettore Manconi,3 Tarcisio Niglio,4 Augusto Orsini,5 Dimitri Mandolesi,6 Alessandro d'Alessandro,7 Francesco Fedele1 1Department of Cardiovascular and Respiratory Sciences, Sapienza University Rome, Rome, Italy; 2Department of Angiology, “T Masselli-Mascia” Hospital, San Severo (FG, Foggia, Italy; 3Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy; 4Istituto Superiore di Sanità, Rome, Italy; 5Department of Vascular Surgery, “Gioia” Hospital, Sora (FR, Sora, Italy; 6Medicina del lavoro Sapienza University Roma, Rome, Italy; 7Faculty of Medicine, Catholic University “Our Lady of Good Counsel,” Tirana, Albania Introduction: Chronic cerebrospinal venous insufficiency (CCSVI is characterized by multiple stenosis/obstructions affecting the principal extracranial outflow pathways of the cerebrospinal venous system. Using EchoColorDoppler (ECD to assess chronic CCSVI is a very difficult and long examination. It takes about an hour even for an expert sonographer. Methods: Hemodynamic morphological map (MEM-Net is a program that works on the Internet. All the morphological and hemodynamic data of the patient can be entered into the program’s anatomical scheme to create a map of the ECD report. The program also allows us to collect all the data during the ECD assessment and, using its algorithm, make the report uniform. Conclusion: Reporting on the map by using MEM-net shortens the time of ECD written reporting that is done automatically. The program also makes a blind control of the report and enables the use of it for scientific research. We hope that in the future everyone will use this data collection tool for all scientific work on this topic. Keywords: CCSVI, ECD, Map, cerebral venous system, sonography

  9. Clinical Stress Echocardiography

    NARCIS (Netherlands)

    S.E. Karagiannis

    2007-01-01

    textabstractTwo-dimensional echocardiography is a commonly used non-invasive method for the assessment of left ventricular function. It provides precise information on both global and segmental myocardial function by displaying endocardial motion and wall thickening. Dobutamine stress

  10. Analysis of the Effect of the Application of Four-dimensional Color Doppler Ultrasound in Prenatal Screening of Fetal Malformation%产前胎儿畸形筛查中四维彩超的应用效果分析

    Institute of Scientific and Technical Information of China (English)

    纪亚梅; 王文俊

    2016-01-01

    目的:探讨产前胎儿畸形筛查中四维彩超的应用效果。方法方便选取2013年1月—2016年2月在该院进行产前筛查的2200例中晚期孕妇作为研究对象,分别对其进行二维彩超及四维彩超检查,根据胎儿出生后情况或引产结果对二维彩超及四维彩超的检出率进行比较。结果二维彩超对胎儿畸形的检出率为76.92%(40/52),四维彩超对胎儿畸形的检出率为96.15%(50/52),四维彩超对胎儿畸形的检出率明显高于二维彩超(P﹤0.01)。结论与二维彩超相比,四维彩超在胎儿畸形检出方面具有明显优势,值得临床推广应用。%Objective To investigate the application effect of four dimensional color Doppler ultrasound in prenatal screen-ing of fetal malformation. Methods 2 200 cases of advanced pregnant women from January 2013 to February 2016 in our hospital were selected as research subjects. Two dimensional color Doppler ultrasound and four-dimensional color Doppler ultrasound examination were carried out on them. According to the results of the fetus after birth or induction of labor, the detection rate of two-dimensional color Doppler ultrasound and four-dimensional color Doppler ultrasound were compared. Results The detection rate of two-dimensional color Doppler ultrasound for fetal malformation was 76.92%(40/52), while that of four-dimensional color Doppler ultrasound was 96.15%(50/52). Thus the detection rate of four-dimensional color Doppler ultrasound was obviously higher than that of two-dimensional color Doppler ultrasound(P﹤0.01). Conclusion Com-pared with two-dimensional ultrasound, four-dimensional color Doppler ultrasound in the detection of fetal abnormalities has obvious advantages, which is worth clinical application.

  11. General principles of carotid Doppler ultrasonography

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Whal [Dept. of Radiology, Seoul National University College of Medicine, Seoul (Korea, Republic of)

    2014-03-15

    Carotid Doppler ultrasonography is a popular tool for evaluating atherosclerosis of the carotid artery. Its two-dimensional gray scale can be used for measuring the intima-media thickness, which is very good biomarker for atherosclerosis and can aid in plaque characterization. The plaque morphology is related to the risk of stroke. The ulceration of plaque is also known as one of the strong predictors of future embolic event risk. Color Doppler ultrasonography and pulse Doppler ultrasonography have been used for detecting carotid artery stenosis. Doppler ultrasonography has unique physical properties. The operator should be familiar with the physics and other parameters of Doppler ultrasonography to perform optimal Doppler ultrasonography studies.

  12. Quantitative assessment of harmonic power doppler myocardial perfusion imaging with intravenous levovist™ in patients with myocardial infarction: comparison with myocardial viability evaluated by coronary flow reserve and coronary flow pattern of infarct-related artery

    Directory of Open Access Journals (Sweden)

    Nagai Kunihiko

    2005-08-01

    Full Text Available Abstract Background Myocardial contrast echocardiography and coronary flow velocity pattern with a rapid diastolic deceleration time after percutaneous coronary intervention has been reported to be useful in assessing microvascular damage in patients with acute myocardial infarction. Aim To evaluate myocardial contrast echocardiography with harmonic power Doppler imaging, coronary flow velocity reserve and coronary artery flow pattern in predicting functional recovery by using transthoracic echocardiography. Methods Thirty patients with anterior acute myocardial infarction underwent myocardial contrast echocardiography at rest and during hyperemia and were quantitatively analyzed by the peak color pixel intensity ratio of the risk area to the control area (PIR. Coronary flow pattern was measured using transthoracic echocardiography in the distal portion of left anterior descending artery within 24 hours after recanalization and we assessed deceleration time of diastolic flow velocity. Coronary flow velocity reserve was calculated two weeks after acute myocardial infarction. Left ventricular end-diastolic volumes and ejection fraction by angiography were computed. Results Pts were divided into 2 groups according to the deceleration time of coronary artery flow pattern (Group A; 20 pts with deceleration time ≧ 600 msec, Group B; 10 pts with deceleration time Conclusion The preserved microvasculature detecting by myocardial contrast echocardiography and coronary flow velocity reserve is related to functional recovery after acute myocardial infarction.

  13. Three-dimensional echocardiography

    Energy Technology Data Exchange (ETDEWEB)

    Buck, Thomas [University Hospital Essen (Germany). West German Heart Center; Franke, Andreas [Klinikum Region Hannover - Klinikum Siloah, Hannover (Germany). Dept. of Cardiology, Angiology and Intensive Care Medicine; Monaghan, Mark J. (eds.) [King' s College Hospital, London (United Kingdom)

    2011-07-01

    Presents tips and tricks for beginners and experts Provides educational material for 3D training courses Features comprehensively illustrated cases Includes an accompanying DVD with video clips of all sample cases Three-dimensional echocardiography is the most recent fundamental advancement in echocardiography. Since real-time 3D echocardiography became commercially available in 2002, it has rapidly been accepted in echo labs worldwide. This book covers all clinically relevant aspects of this fascinating new technology, including a comprehensive explanation of its basic principles, practical aspects of clinical application, and detailed descriptions of specific uses in the broad spectrum of clinically important heart disease. The book was written by a group of well-recognized international experts in the field, who have not only been involved in the scientific and clinical evolution of 3D echocardiography since its inception but are also intensively involved in expert training courses. As a result, the clear focus of this book is on the practical application of 3D echocardiography in daily clinical routine with tips and tricks for both beginners and experts, accompanied by more than 150 case examples comprehensively illustrated in more than 800 images and more than 500 videos provided on a DVD. In addition to an in-depth review of the most recent literature on real-time 3D echocardiography, this book represents an invaluable reference work for beginners and expert users of 3D echocardiography. - Tips and tricks for beginners and experts - Educational material for 3D training courses - Comprehensively illustrated cases - DVD with video clips of all sample cases.

  14. Automatic extraction of disease-specific features from Doppler images

    Science.gov (United States)

    Negahdar, Mohammadreza; Moradi, Mehdi; Parajuli, Nripesh; Syeda-Mahmood, Tanveer

    2017-03-01

    Flow Doppler imaging is widely used by clinicians to detect diseases of the valves. In particular, continuous wave (CW) Doppler mode scan is routinely done during echocardiography and shows Doppler signal traces over multiple heart cycles. Traditionally, echocardiographers have manually traced such velocity envelopes to extract measurements such as decay time and pressure gradient which are then matched to normal and abnormal values based on clinical guidelines. In this paper, we present a fully automatic approach to deriving these measurements for aortic stenosis retrospectively from echocardiography videos. Comparison of our method with measurements made by echocardiographers shows large agreement as well as identification of new cases missed by echocardiographers.

  15. Exercise treadmill saline contrast echocardiography for the detection of patent foramen ovale in hypoxia.

    Science.gov (United States)

    Fenster, Brett E; Freeman, Andrew M; Silveira, Lori; Buckner, J Kern; Curran-Everett, Douglas; Carroll, John D

    2015-12-01

    Percutaneous patent foramen ovale (PFO) occluder placement improves dyspnea and oxygen requirement in hypoxic patients with PFO-mediated right-to-left shunt (RTLS). Although saline contrast echocardiography (SCE) in the resting state can identify PFO RTLS, SCE performed with exercise stress testing may provide incremental diagnostic yield compared to rest SCE. We evaluated the ability of exercise SCE to predict PFO presence and size using intracardiac echocardiography (ICE) as a gold standard in a hypoxic cohort. Thirty-three hypoxic patients with suspected PFO RTLS who underwent rest, Valsalva, and exercise stress SCE prior to ICE were evaluated retrospectively. PFO RTLS was defined by ICE findings including PFO anatomy, RTLS by saline contrast and color Doppler, and probe patency. SCE shunt severity was compared to the presence of ICE-defined PFO RTLS and PFO size. Exercise SCE for the detection of PFO RTLS performed with an area under the curve of 0.77, sensitivity of 73%, and specificity of 86%. Among 26 patients with PFO RTLS, exercise SCE identified four additional patients with PFO that had negative rest SCE and two patients with negative Valsalva SCE. Exercise SCE had a stronger correlation with PFO size than resting or Valsalva SCE. Exercise SCE detects PFO RTLS and predicts PFO size in a hypoxic cohort. In addition, exercise SCE can identify PFO RTLS that is otherwise undetected with rest or Valsalva SCE. Exercise SCE may be appropriate when a clinical suspicion for PFO RTLS persists despite negative rest and Valsalva SCE.

  16. 用彩超检查鉴别乳房肿块良恶性的准确性研究%Application of color Doppler ultrasound in the diagnosis of breast masses

    Institute of Scientific and Technical Information of China (English)

    徐志岩; 李颖

    2015-01-01

    目的:探讨用彩超检查鉴别乳房肿块良恶性的准确性。方法:对2012年1月~2013年12月期间在我院进行检查的76例乳房肿块患者的临床资料进行回顾性研究。我院对这76例患者进行了彩超检查。结果:经彩超检查发现,这76例患者中有58例患者的乳房肿块为良性,有18例患者的乳房肿块为恶性。经病理检查后发现,18例经彩超检查被诊断为乳房肿块恶性的患者其检查结果完全准确,但在58例经彩超检查被诊断为乳房肿块良性的患者中,有3例患者的乳房肿块为恶性,误诊率为3.9%。结论:用彩超检查鉴别乳房肿块良恶性的准确性很高。而且该检查方法还具有无创、方便、快捷和廉价等优点。因此,进行彩超检查可作为临床上鉴别乳房肿块良恶性的首选方法。%Objective To explore the effect of clinical diagnosis and the method of application of color Doppler ultrasound in breast masses. Methods 76 cases of breast masses were admitted to our hospital, application of color Doppler ultrasound inspection, observation of color Doppler sonographic characteristics, flow velocity and resistance index, analysis of the comparison of results, Results of 76 cases of pathologically confirmed malignant masses in 14 cases, accounting for 18.4%, color Doppler ultrasound in the diagnosis of malignant tumor in 13 cases, and the results of pathological diagnosis coincidence rate is 92.86%. Benign tumor of 62 cases, accounting for 81.6%, color Doppler ultrasound in the diagnosis of benign lesions in 58 cases, and the results of pathological diagnosis coincidence rate is 93.54%. The total coincidence rate was 93.42%. Conclusion color Doppler ultrasound for breast mass inspection is fast and convenient, noninvasive, inexpensive, accurate and early detection can help breast masses and diagnosis, to facilitate the timely treatment, is worthy of extensive promotion and application.

  17. Correlation of ABI、color doppler ultrasound spectrum and TBI of lower extremity artery in diabetic patients%ABI与彩超频谱、TBI在糖尿病下肢动脉疾病中相关性研究

    Institute of Scientific and Technical Information of China (English)

    邓迎红; 潘玲; 宋婉华; 肖菁

    2011-01-01

    目的 探讨糖尿病下肢动脉病变踝肱指数(ABI)与超声彩色多普勒频谱、趾肱指数(TBI)相关性分析.方法 采用多功能外周血管检查仪及超声彩色多普勒检查仪对55位糖尿病患者行109例下肢动脉检查,测定ABI、TBI及彩色多普勒血流频谱.结果 A1组(0.9color doppler ultrasound spectrum and toe-brachial index (TBI) of lower extremity artery in diabetic patients. Methods ABI, TBI and color doppler ultrasound spectrum measurement were carried out on 109 lower extremity artery of 55 diabetic patients. Croups were assigned according to ABI and TBI values and the correlation of ABI and color doppler ultrasound spectrum as well as ABI and TBI. Results The changes of ABI and of color doppler ultrasound spectrum in Group A1(0.9color doppler ultrasound spectrum measurement. Early diagnosis of pathological changes of diabetic patients can be realized exactly by combing ABI、TBI and color doppler ultrasound spectrum.

  18. Correlation between morphologic carotid plaque findings based on color-Doppler and CT multidetector angiography with intraopertive findings in carotid artery stenosis

    Directory of Open Access Journals (Sweden)

    Savić Živorad N.

    2010-01-01

    Full Text Available Bacground/Aim. Vast majority of patients with corotid artery sclerosis do not have transitory ischemic attacks (TIA as working to the persistent silent disease, but stroke is the first sign. Precise and early diagnosis of the carotid artery disease and plaques are very important. The aim of this study was to determine how the composition / identity of diagnostic methods, color-Doppler, ultrasonography (US CT multidetector angio (MDCTA scan and intraoperative (IO findings, as well as the morphology of plaques in patients with haemodynamic significant stenosis of the internal carotid artery. Methods. Carotid plaques were observed by two diagnostic methods, US and MDCTA, and these findings were correlated with the IO findings. Results. In 62 patients both carotid artheries were examined and 83 plaques were observed. There were 68 surgical interventions. The structure of plaques was divided into four types: lipid, fibrous, fibrocalcified and calcified plaque. US showed: lipid plaques 10.8%; fibrous 1.2%; fibrocalcified 44.6% and calcified 43.4%, and the MDCTA lipid plaques 8.4%; fibrocalcified 48.2% and calcified 43.4%. Intraoperative findings were: lipid plaques 10.3%; fibrocalcified 41.2% and calcified 48.5%. A statistically highly significant agreement between the US and MDCTA in the diagnosis of plaque morphology was obtained (Cramer's V = 0.919, p < 0.01; Lambda = 0.921, p < 0.01 and also statistically significant agreement between US and IO findings (Cramer' s V = 0.831, p < 0.01; Lambda = 0.859, p < 0.01. A statistically highly significant agreement between MDCTA and IO findings in plaque morphology was found, as well (Cramer's V = 0.815, p < 0.01; Lambda = 0.829, p < 0.01. Conclusion. There is statistically highly significant correlation between US and MDCTA diagnostic methods in the evaluation of plaque morphology in surgically significant stenosis of internal carotid artery as well as their agreement with the intraoperative finding.

  19. Comparison of findings of spontaneous splenorenal shunt in color Doppler sonography with multislice CT scan (64 slices) in liver transplant candidates

    Energy Technology Data Exchange (ETDEWEB)

    Bagheri, Mohammadhadi, E-mail: Bagherimh@gmail.com [Department of Radiology, Shiraz University of Medical Sciences, Namazi Hospital, Shiraz (Iran, Islamic Republic of); Hajati, Azadeh, E-mail: azadeh.hajati@gmail.com [Department of Radiology, Shiraz University of Medical Sciences, Namazi Hospital, Shiraz (Iran, Islamic Republic of); Hosseini, Mohammadkazem, E-mail: hosseiniaslm@sums.ac.ir [Department of Radiology, Shiraz University of Medical Sciences, Namazi Hospital, Shiraz (Iran, Islamic Republic of); Ostad, Seyed Pouria, E-mail: Pouria.Ostad@gmail.com [Department of Radiology, Shiraz University of Medical Sciences, Namazi Hospital, Shiraz (Iran, Islamic Republic of)

    2012-09-15

    Background: Liver transplantation is the only definite treatment for end stage liver disease and it has high costs for the medical system so decreasing its complication and increasing its effectiveness is crucial. One of the factors that affect liver transplantation is the presence of spontaneous splenorenal shunt. Its diagnosis is mainly overlooked in pre-liver transplant patients. Main modality for its diagnosis is multislice CT scan however this is more expensive than sonography. Also, it exposes the patients to ionizing radiation. Considering the advantages of color Doppler ultrasound, studies to determine the sensitivity and specificity for detection of spontaneous splenorenal shunt is essential. Materials and methods: In our study 70 cirrhotic patients who were referred by liver transplant surgeons for evaluation of abdomen by CT and sonograhy were assessed for presence of spontaneous splenorenal shunt, left adrenal varix and left renal vein diameter and velocity and sensitivity and specificity of both modalities were checked. Patients in whom left renal vein could not evaluated by sonography and patients with splenectomy and nutcracker syndrome were excluded. Results: In the point of 10 mm diameter of left renal vein in CT scan there was 78.6% sensitivity and 67.9% specificity for the presence of spontaneous splenorenal shunt. Left adrenal varix in CT had sensitivity of 71.4%, specificity of 100%, and positive predictive value of 100% and negative predictive value of 70% and varix below spleen in CT had sensitivity of 54.8%, specificity of 96.4%, and positive predictive value of 95.8% and negative predictive value of 58.7% for the presence of spontaneous splenorenal shunt. In the point of 8 mm diameter of left renal vein in sonography there was 66.7% sensitivity and 85.7% specificity for the presence of spontaneous splenorenal shunt. For the velocity of more than 35 cm/s of left renal vein in sonography there was 61.9% sensitivity and 82.1% specificity for

  20. 多普勒超声对阳萎分度诊断的研究%Study of color Doppler flow imaging for the diagnosis of impotence grading

    Institute of Scientific and Technical Information of China (English)

    滕剑波; 玄绪军; 张先东

    2000-01-01

    目的 探讨不同硬度状态阴茎血管血流参数的差异,为阳萎分度诊断提供客观依据.方法 应用多普勒超声检测74例阳萎患者,海绵体注药前后,连续测定海绵体动脉及背动脉收缩期峰值流速(PSV)、舒张期末血流速度(EDV)、阻力指数(RI)和背深静脉血流速度,对比分析不同硬度诸参数的差异及与硬度的关系.结果 多普勒超声根据海绵体动脉PSV减小及EDV升高,并同硬度结合可以推断海绵体动脉和静脉异常;海绵体动脉PSV、EDV、RI在不同硬度有显著性差异(P<0.05),RI与硬度密切相关(r's=0.7948,P<0.01),可作为阳萎分度诊断的客观指标.结论 多普勒超声是阳萎分度诊断有价值的检查手段.%Objective To studly the difference of penile vascular parameters under different penis stiffness state in order to provide objective information for diagnosis of impotence grading. Methods Seventy-four cases of impotence patients were examined by color Doppler flow imaging (CDFI). Before and after drug injection of cavemosum,the 5SV,EDV,RI of cavernosal artery and velocity of dorsal vein were measured continously at the time interval of 5 min,and were compared with penis stiffness state. The difference of the vascular parameters and the correlation between the vascular parameters and penis stiffness were analysed under different penis stiffness. Results By combinating the PSV decrease and EDV increase of cavernosal artery with penis stiffness, the abnormalities of cavernosal artery and dorsal vein may be found. Under different penis stiffness state the PSV, EDV,RI o"f cavernosal artery have significant difference ( P <0.05). The RI correlated closely with the penis stiffness state ( r',= 0.7948). RI may provide objective data for the diagnosis of impotence grading. Conclusions CDFI is regarded as the valuable method in the diagnosis of impotence grading.

  1. 二维和彩色多普勒超声诊断睾丸损伤%Two-dimensional and color Doppler ultrasonographic diagnosis for injury of testis

    Institute of Scientific and Technical Information of China (English)

    徐卫东; 刘牧; 耿兰溪; 栾智勇; 邓凯丽

    2001-01-01

    目的评价彩色多普勒超声(CDU)对睾丸损伤的诊断价值及临床治疗的指导意义。方法用CDU检测26例(27只)受伤睾丸的形态学及血流动力学改变,根据声像图特征将受伤睾丸分为四型:挫伤型、血肿型、破裂型、脱位型。结果 26例睾丸损伤的超声分型:挫伤型4例,血肿型7例,破裂型15例,脱位型1例。手术治疗22例,超声分型与手术对照符合率为 95.7%。结论 CDU检测简便易行,准确可靠,是睾丸损伤的首选检诊方法,睾丸损伤的超声分型与病理改变相接近,便于指导临床处理。%Objective To evaluate the diagnostic value and the instructive importance to the clinic treatment of color Doppler ultrasonography (CDU) in the injury of testis.Methods The morpholical and homodynamic changes of 27 injuried testes ( 26 patients ) were observed with CDU. On the basis of the features of CDU appearances, the injuried testes were divided into 4 types (blunt, hematoma, rupture and dislocation types ).Results By the types of CDU, 4,7,15 and 1 of 27 injuried testes were respectively classified for blunt, hematoma, rupture and dislcoation types. 22 of the patients underwent surgery.The coincident rate between CDU and pathologic diagnoses of 23 injuried testes performed operation was 95.7%(22/23).Conclusions Typing diagnosis with CDU in injuried testes is a simple, easy, accurate and reliable method and should become a first choice method in diagnosing testicular injury. Moreover, because the ultrasonic type and the pathologic changes of injuried testes was coincident,this method may be contribute to the clinical treatment of injuried testes.

  2. The monitoring value of color Doppler ultrasound in the vein puncture catheter postoperative application%彩色多普勒超声对静脉穿刺置管术后的监测价值

    Institute of Scientific and Technical Information of China (English)

    黄少敏; 岑忠耿; 张伟帅; 杨文海

    2016-01-01

    Objective To evaluate the value of color Doppler ultrasound in the vein puncture catheter postop-erative application. Methods A retrospective analysis of 211 cases of postoperative patients with venous puncture, color Doppler ultrasound catheter in intravascular position and direction, where there were no abnormal echo and blood flow in the venous lumen, walking in the direction of the line and filling. Results Of 211 cases, 158 cases of catheter and venous blood circulation unobstructed, no thrombosis. 53 cases and venous thrombosis, where incidence was 25%. Conclusion Color Doppler ultrasound is the preferred method of monitoring venous puncture catheter in postoperative patients.%目的:探讨彩色多普勒超声在静脉穿刺置管术后的应用价值。方法回顾性分析211例静脉穿刺置管术后患者,彩色多普勒超声观察导管在血管内位置及走行,所在静脉管腔内有无异常回声及血流的方向、走行及充盈情况。结果211例患者中,158例导管及所在静脉血流通畅,无血栓形成。53例导管及所在静脉有血栓形成,发生率为25%。结论彩色多普勒超声是监测静脉穿刺置管术后患者血管情况的首选方法。

  3. The clinical value of color Doppler ultrasound diagnosis of acute lower extremity deep venous thrombosis%彩色多普勒超声诊断下肢深静脉急性血栓的临床价值

    Institute of Scientific and Technical Information of China (English)

    雷声鸣; 童燕燕; 林继平

    2011-01-01

    Objective To evaluate the clinical value of color Doppler ultrasound in acute deep vein thrombosis diagnosis. Methods 38 patients acute deep venous thrombosis were treatment with color Doppler ultrasound then observed the, imaging features and the flow characteristics. Results The data in the diagnosis of acute thrombosis in 38 cases, 1 case of misdiagnosis, diagnosis rate of 97.44%, In which 37 patients with unilateral thrombosis, I case of thrombosis of both lower extremities; left lower extremity venous thrombosis in 27 cases, 10 cases of right lower limb thrombosis. Conclusion Color Doppler ultrasound examination for acute lower extremity deep venous thrombosis diagnosis has important clinical value, the preferred and reliable disease- based inspection methods.%目的 探讨彩色多普勒超声在下肢深静脉急性血栓诊断的价值.方法 应用彩色多普勒超声诊断39例下肢深静脉急性血栓,观察声像图特征及血流特点.结果 本组资料中诊断急性血栓38例,误诊1例,诊断符合率97.44%,其中单侧血栓37例,双下肢血栓1例;左下肢静脉血栓27例,右下肢血栓10例.结论 彩色多普勒超声检查对下肢深静脉急性血栓的诊断有重要的临床价值,为本病的首选和可靠的检查方法.

  4. 彩色多普勒超声在下肢深静脉血栓的诊断应用%Application of color Doppler ultrasound in diagnosis of lower extremity deep venous thrombosis

    Institute of Scientific and Technical Information of China (English)

    韩诚

    2014-01-01

    Objective:To evaluate the diagnosis significance of color Doppler ultrasound in deep lower vena thrombsis . Methods:35 cases patients with deep venous thrombosis were treated with color Doppler ultrasound then observed location, shape of thrombosis, diameter of affected vein, blood flow characteristics.Results:The data in the diagnosis of thrombosis in 35 cases,1 case of thrombosis of both lower extremities,34 case of thrombosis of single lower extremities;left lower extremity venous thrombosis in 24 cases,10 cases of right lower extremity venous throm-bosis.Conclusion:Color Doppler ultrasound examination for lower extremity deep venous thrombosis diagnosis has important clinical value,the preferred and reliable methods for lower extremity deep venous thrombosis .%目的:评价彩超对下肢深静脉血栓的诊断意义。方法:应用彩色多普勒超声诊断35例下肢深静脉血栓,观察血栓形成的位置、形态、受累静脉的管径、血流情况特点。结果:该组资料中诊断血栓35例,其中单侧血栓34例,双下肢血栓l例;左下肢静脉血栓24例,右下肢静脉血栓l0例。结论:彩色多普勒超声检查对下肢深静脉血栓的诊断有重要的临床价值,为该病的可靠和首选的检查方法。

  5. 肝肿瘤灰阶超声造影与彩色多普勒超声检查对比分析%Comparison of Gray Scale Contrast-enhanced and Color Doppler Ultrasound in Diagnosis of Hepatic Tumor

    Institute of Scientific and Technical Information of China (English)

    李文彬; 匡驰; 胡丽娜; 唐水娟

    2012-01-01

    目的 对比灰阶超声造影和彩色多普勒超声在诊断肝肿瘤中的应用价值.资料与方法 34例肝肿瘤患者分别行灰阶超声造影及彩色多普勒超声造影,对血流显示率、微血管血流显示率行临床监测及综合调查分析.结果 灰阶超声造影及彩色多普勒造影血流显示率分别为100.0% (34/34)、91.2% (31/34),差异无统计学意义(x2=1.39,P>0.05);微血管血流显示率分别为97.1%(33/34)与29.4% (10/34),差异有统计学意义(x2=33.46,P<0.01).结论 实时灰阶超声造影法具有对低速血流敏感、对肿瘤微血管的显示敏感、空间分辨力较好、不存在伪像等优势,可用于观察肿瘤实质内的微血管灌注,较多普勒造影法更有助于鉴别诊断肝肿瘤.%Purpose To compare contrast enhanced ultrasonography and color Doppler ultrasound in evaluating patients with hepatic tumor. Materials and Methods 34 patients with hepatic tumor underwent contrast enhanced ultrasonography and color Doppler ultrasound examination. The clinical information was correlated with detection rate of blood flow and microvascular blood flow. Results Tumor blood flow was detected in 34 cases (100.0%) using contrast enhanced ultrasound and in 31 (91.2%) cases using color Doppler. There was no statistical significance (xr2=1.39, P > 0.05); contrast enhanced ultrasound demontrated microvascular blood flow in 33 cases (97.1%) significantly higer than color Doppler which showed microvascular blood flow in 10 patients (29.4%) (/=33.46, P < 0.01). Conclusion Real-time gray scale harmonic imaging method is sensitive in demonstrating slow flow, tumor microvessel with better spatial resolution and no artifacts. This can be utilized for real time observation of microvascular perfusion within the tumor.

  6. 高频彩色多普勒超声对小儿肠套叠的诊断价值%Diagnostic value of high frequency color Doppler ultrasound for pedo-intussusception

    Institute of Scientific and Technical Information of China (English)

    冼敏

    2010-01-01

    目的 探讨高频彩色多普勒超声对小儿肠套叠的诊断及其临床价值.方法 回顾性分析高频彩色多普勒超声诊断、并经X-线下空气灌肠复位和手术证实的小儿肠套叠120例.结果 120例小儿肠套叠,低频超声检出112例,检出率93.33%,高频彩色多普勒超声检出119例,漏诊1例,高频彩色多普勒超声检出率99.16%,11例超声提示肠坏死可能,手术后证实.结论 高频彩色多普勒超声对诊断小儿肠套叠的检出率高,彩色多普勒可间接提示肠套叠是否合并有肠坏死可能,为临床选择治疗方案提供依据,是目前临床早期诊断小儿肠套叠的首选检查方法.%Objective To approach the diagnosis and clinical value of high frequency color Doppler ultrasound for pedo-intussusception. Methods To analyze the 120 cases pedo-intussusception retrospective,which has been diagnosed by high frequency color Doppler ultrasound and been certified by gaseous enema reduction and operation. Results In the 120 cases pedo-intussusception, 112 cases were detected by low frequency ultrasound,the detection rate was 93.33%. 119 cases were detected by high frequency color Doppler ultrasound, 1 case was missed diagnosis, the detection rate was 99.16%, and 11 eases were prompted to be intestinal necrosis,which certified by operation. Conclusion The detection rate of high frequency color Doppler ultrasound is high for pedo-intussusception. It can prompt that intussusception combine ntestinal necrosis or not and offer evidence for selecting treatment protocols. It is the preferred check method for early diagnosis of pedo-intussusception.

  7. Value of color Doppler ultrasound in diagnosis of closed scrotal and testicular trauma%彩色多普勒超声对阴囊闭合性损伤的诊断价值

    Institute of Scientific and Technical Information of China (English)

    黄芳

    2011-01-01

    目的 探讨彩色多普勒超声对阴囊闭合性损伤的诊断价值.方法 回顾性分析32例阴囊外伤患者的彩色多普勒超声图像资料,检测阴囊壁层次结构和睾丸的形态大小,内部有无肿块;对病变区,测量其大小,观察其形态、边界及内部回声,并用彩色多普勒观察肿块内部及周边血流情况.结果 32例患者根据睾丸、阴囊的声像图表现可分为:睾丸挫伤5例,睾丸血肿10例,睾丸破裂16例,单纯阴囊壁血肿1例(另有10例阴囊壁血肿合并睾丸损伤).结论 高频彩色多普勒超声能准确诊断阴囊、睾丸的损伤,可作为阴囊闭合性损伤的首选检查方法.%Objective To explore the value of color Doppler ultrasound in diagnosis of scrotal and testicular trauma.Methods The color Doppler ultrasonic imaging data of 32 patients with closed scrotal and testicular trauma were analyzed retrospectively. The layers and structure of scrotum wall, shape and size of testicles, internal masses were detected. The size,shape , boundary and internal echo of lesions were observed, then the blood flow was observed by color Doppler ultrasonography.Results According to the ultrasonographic imaging, 32 cases were divided into 5 cases of testicular contusion, 10 cases of testicular hematoma, 16 cases of testicular rupture, 1 case of simple scrotal wall hematoma( another 10 cases of scrotal wall hematoma complicated with testicular injury ). Conclusion High frequency color Doppler ultrasonography can accurately diagnose scrotal and testicular trauma, it can be the best way for examining closed scrotal trauma.

  8. 彩色多普勒超声在下肢深静脉血栓诊断中的应用分析%Analysis on Color Doppler Ultrasound Application in Diagnosis of Deep Venous Thrombosis of Lower Extremity

    Institute of Scientific and Technical Information of China (English)

    高宏

    2015-01-01

    Objective To evaluate the efficacy of color doppler ultrasound application in diagnosis of deep venous thrombosis of lower extremity. Methods We chose 42 patients suffering from deep venous thrombosis of lower extremity who were treated in hospital from December 2013 to December 2014 and separated them into study group and control group at random. Patients in study group were given color doppler ultrasound examination; while patients in control group were diagnosed by DSA(digital subtraction angiography),and then compared diagnosis effect of two groups. Results Diagnosis accuracy and complication incidence in study group were much better than those in control group; there was a diagnosis differential between two groups,and such a differential had statistic value(P<0.05). Conclusion Color doppler ultrasound examination is accurate and efficiency in diagnosis of deep venous thrombosis of lower extremity; it is conducive to increasing diagnosis efficiency and reducing complication incidence,therefore,color doppler ultrasound examination is rather worthwhile to be promoted and applied in diagnosis of deep venous thrombosis.%目的:探讨彩色多普勒超声在下肢深静脉血栓诊断中的应用分析。方法选取2013年12月~2014年12月我院接诊的42例下肢深静脉血栓患者,随机分为实验组和对照组,实验组采用彩色多普勒超声诊断技术,对照组采用数字减影血管造影(DSA)诊断技术,观察两组患者的诊断效果。结果实验组患者的诊断准确率、并发症的发生率好于对照组,差异有统计学意义(P<0.05)。结论彩色多普勒超声在下肢深静脉血栓诊断中的效果显著,诊断率高,并发症的发生率低。

  9. 彩色多普勒超声在妇科急腹症中应用价值%Application Value of Color Doppler Ultrasound in Gynecological Acute Abdomen

    Institute of Scientific and Technical Information of China (English)

    吴春山; 苏丹萍

    2013-01-01

    Objective:To explore ultrasound diagnosis value in gynecologic acute abdomen. Methods :The application of ultrasonic diagnosis for gynecological acute abdomen in 157 cases were confirmed by clinical operation. Results:color Dopper flow ima ultrasonic accuracy rate was 94%.Conclusion:Color Doppler ultrasonic diagnostic occupies an important position in the gynecological acute abdomen.%  目的:探讨彩色多普勒超声在妇科急腹症的诊断价值,方法:应用超声对157例妇科急腹症进行诊断并经临床治疗或手术证实;结果:彩色多普勒超声诊断正确率为94%。结论:彩色多普勒超声诊断在妇科急腹症中占重要地位。

  10. Advanced Three-Dimensional Echocardiography

    NARCIS (Netherlands)

    B. Ren (Ben)

    2014-01-01

    markdownabstract__Abstract__ During the development of echocardiography, 3D echocardiography imaging represents a major innovation in cardiovascular ultrasound (Figure 1). Advancements in computer and transducer technologies permit real-time 3D acquisition and presentation of cardiac

  11. Clinical Stress Echocardiography

    NARCIS (Netherlands)

    S.E. Karagiannis

    2007-01-01

    textabstractTwo-dimensional echocardiography is a commonly used non-invasive method for the assessment of left ventricular function. It provides precise information on both global and segmental myocardial function by displaying endocardial motion and wall thickening. Dobutamine stress echocardiograp

  12. 彩色多普勒超声在早产儿视网膜病变中应用%Application of color Doppler flow imaging in retinopathy of prematurity

    Institute of Scientific and Technical Information of China (English)

    陈洁玲; 邹丽娟; 吴京红; 赵华飞; 吴中耀

    2011-01-01

    Objective To observe ultrasound characteristics in stage Ⅴ retinopathy of prematurity.Methods All 80 patients (150 eyes) with retinopathy of prematurity were examined with color Doppler flow imaging (CDFI). The morphologic characteristics of color Doppler flow imaging and blood stream were observed in patients with retinopathy of prematurity. Results Among 150 eyes with retinopathy of prernaturity at stage Ⅴ, there were 80 patients in whom we observed that lump-like echo connected closely with echo of lens and the circumambience was surrounded and the zonal echo was attached to the optic disc. The features of blood flow showed the signal of blood stream connected with central retinal vessels, which was analyzed by Doppler spectrum as the blood-flow spectrum like sand-heap. Conclusions The morphologic changes of color Doppler flow imaging and the features of blood flow are useful in diagnosis of retinopathy of prematurity patients at the stageⅤ.%目的 观察5期早产儿视网膜病变的超声显像特征.方法 用彩色多普勒超声诊断仪检查80例(150只眼)于眼科临床检查发现异常的早产患儿,并观察彩色多普勒血流成像(CDFI)形态特点及病变的血流特征.结果 在早产儿患眼超声检查80例(150只眼)眼内显示为与晶状体回声紧密相连并包绕其周围的不规则光团回声,光团与视乳头间条索状光带相连,血流特点表现为条索状光带上显示与视网膜中央血管相延续的血流信号,脉冲多普勒显示沙堆状动脉血流频谱特征.结论 彩色多普勒超声能清晰显示5期早产儿视网膜病变的超声显像特征和血流特征,结合临床病史,为诊断提供重要的依据.

  13. The diagnosic value of Color Doppler Ultrasound in placental abruption%彩色多普勒超声在胎盘早剥中的诊断价值

    Institute of Scientific and Technical Information of China (English)

    刘楠

    2013-01-01

    目的:探讨彩色多普勒超声在胎盘中的诊断价值。方法:回顾性分析对符合胎盘早剥症状表现的203例孕妇行超声检查,探查胎儿胎盘分布,厚度,内部结构。结果:203例超声诊断与产后胎盘外观所见符合胎盘早剥者32例。结论:彩色多普勒超声能早期诊断胎盘早剥,准确率高,为临床选择分娩方式提供可靠的图像依据,具有较好的临床实用价值。%Objective:Discuss the diagnosic of Color Doppler Ultrasound in placental abruption. Methods:examine 203 cases of pregnant woman whose symptom accord placental abruption,examine fetus’s placenta distributing,thickness ane the structure .Results:there are 32 cases accors placental abrubtion in the 203 cases of pregnant woman.Conclusion:color Doppler Ultrasound can.

  14. Clinical value of high frequency color doppler ultrasound in the diagnosis of scrotum emergencies%高频彩色多普勒超声在阴囊急症诊断中的临床价值

    Institute of Scientific and Technical Information of China (English)

    郭丽霞; 江艳丽

    2015-01-01

    目的:探讨高频彩色多普勒超声在阴囊急症诊断中的临床价值。方法:对41例阴囊急症患者的声像图表现进行回顾性分析。结果:睾丸及附睾炎性改变21例,睾丸蒂扭转9例,睾丸外伤7例,阴囊疝4例。结论:高频彩色多普勒超声对阴囊急症诊断有较高的临床价值,可作为诊断与鉴别阴囊急症的首选无创性临床检查方法。%Objective:To explore the clinical value of high frequency color doppler ultrasound in the diagnosis of scrotum emergencies.Methods:The ultrasonogram manifestations of 41 patients with scrotum emergencies were retrospectively analyzed. Results:21 cases were testis and epididymis inflammatory change.9 cases were testicular pedicle torsion.7 cases were testicular trauma.4 cases were scrotum hernia.Conclusion:High frequency color doppler ultrasound has a high clinical value in the diagnosis of scrotum emergencies.It can be used as the preferred noninvasive clinical examination method for diagnosis and identification of scrotum emergencies.

  15. The Incidence of Patent Foramen Ovale in 1,000 Consecutive Patients: A Contrast Transesophageal Echocardiography Study

    Science.gov (United States)

    Fisher, Daniel C.; Fisher, Edward A.; Budd, Jacqueline H.; Rosen, Stacey E.; Goldman, Martin E.

    1995-01-01

    Study objective: Patent foramen ovale (PFO) is present in 10 to 35% of people and has been reported to be an important risk factor for cardioembolic cerebrovascular accidents (CVAs) and transient ischemic attacks (TIAS), especially in younger patients. While contrast transthoracic echocardiography has been used to detect PFO, contrast transesophageal echocardiography (TEE) has a greater sensitivity. Prior studies reported the incidence of PFO in patients presenting with a CVA or TIA. Design: To determine the incidence of PFO in a more general population, we reviewed 1,000 consecutive TEES performed with contrast and color Doppler for the presence of PFO and other cardioembolic risk factors, including atrial septal aneurysm (ASA), aortic plaque, atrial fibrillation (AFib), and atrial thrombi. While imaging with monoplane or biplane TEE, multiple injections of agitated saline solution were injected during cough or Valsalva maneuver to detect flow through a PFO. Patients: There were 482 male and 518 female patients with mean age of 60 + 17 years (range 11 to 93 years). Results: Patent foramen ovale was found in 9.2% of all patients and, though seen in all age groups divided by decade, the incidence in patients aged 40 to 49 years was greater than those aged 70 to 79 years (12.96% vs 6.15%',, p=0.03). Contrast TEE had a much higher detection rate than color Doppler alone. Importantly, there was no greater incidence of PFO in patients with CVA vs thos without CVA, or in male vs female patients. Also, there was a very strong correlation between the presence of ASA and PFO (p<.001). Conclusion: Thus, PFO detected by TEE, frequently seen with ASA, is seen in all age groups and does not in itself present a risk factor for CVA. The association of PFO with peripheral thrombosis and CVA needs further study.

  16. The Incidence of Patent Foramen Ovale in 1,000 Consecutive Patients: A Contrast Transesophageal Echocardiography Study

    Science.gov (United States)

    Fisher, Daniel C.; Fisher, Edward A.; Budd, Jacqueline H.; Rosen, Stacey E.; Goldman, Martin E.

    1995-01-01

    Study objective: Patent foramen ovale (PFO) is present in 10 to 35% of people and has been reported to be an important risk factor for cardioembolic cerebrovascular accidents (CVAs) and transient ischemic attacks (TIAS), especially in younger patients. While contrast transthoracic echocardiography has been used to detect PFO, contrast transesophageal echocardiography (TEE) has a greater sensitivity. Prior studies reported the incidence of PFO in patients presenting with a CVA or TIA. Design: To determine the incidence of PFO in a more general population, we reviewed 1,000 consecutive TEES performed with contrast and color Doppler for the presence of PFO and other cardioembolic risk factors, including atrial septal aneurysm (ASA), aortic plaque, atrial fibrillation (AFib), and atrial thrombi. While imaging with monoplane or biplane TEE, multiple injections of agitated saline solution were injected during cough or Valsalva maneuver to detect flow through a PFO. Patients: There were 482 male and 518 female patients with mean age of 60 + 17 years (range 11 to 93 years). Results: Patent foramen ovale was found in 9.2% of all patients and, though seen in all age groups divided by decade, the incidence in patients aged 40 to 49 years was greater than those aged 70 to 79 years (12.96% vs 6.15%',, p=0.03). Contrast TEE had a much higher detection rate than color Doppler alone. Importantly, there was no greater incidence of PFO in patients with CVA vs thos without CVA, or in male vs female patients. Also, there was a very strong correlation between the presence of ASA and PFO (pCVA. The association of PFO with peripheral thrombosis and CVA needs further study.

  17. Comparative Study of Molybdenum Target Mammography and Color Doppler Ultrasound in Breast Cancer Diagnosis%乳腺X线钼靶与彩超在乳腺癌诊断中的价值比较

    Institute of Scientific and Technical Information of China (English)

    刘亚; 胡茂能; 余梁; 含笑; 曾敏

    2013-01-01

    目的:探讨乳腺X线钼靶摄片、彩色多普勒超声对于乳腺癌诊断的临床价值及限度。方法:回顾性分析55例经手术病理证实为乳腺癌的乳腺钼靶影像报告、彩色多普勒超声结果以及临床相关资料,并按照乳腺影像学报告和数据系统(BI-RADS)分级标准进行统计分析。结果:①钼靶与病理诊断符合率为65%,彩超与病理的诊断符合率为69%,两者间无显著差异(P>0.05),两者联合应用其诊断符合率为89%。②钼靶对于微小钙化的显示优于彩超,彩超对局部血管及血流异常的显示优于钼靶。结论:乳腺钼靶X线与超声在乳腺癌的诊断中各有优势及不足,联合应用可以提高其诊断准确率。%Objective:To investigate the clinical value and limitation of Molybdenum Target Mammography (breast X-ray radiography) and Color Doppler ultrasound in the diagnosis of breast cancer. Methods:Breast cancer data from 55 patients was collected in our hospital from october 2009 to December 2012. The mammography report and color Doppler ultrasound result of these cases, which were confirmed by surgery and pathological analysis for breast cancer, were analyzed retrospectively. Statistical analysis was done according to the breast Imaging and reporting System (BI-RADS) classification standard. Results: ①The coincidence rate between Molybdenum Target Mammography and pathological diagnosis is 65%;the rate between ultrasonography and pathological diagnosis is 69%. There is no signif-icant difference(P>0.05) between the above rates. The diagnostic rate with two joint applications is 89%.②The dis-play of Microcalcification by Molybdenum Target Mammography is better than Color Doppler Ultrasound; but Color Doppler Ultrasound is better than Molybdenum Target Mammography in detection of the abnormalities of local blood vessels and blood flow. Conclusion:Our results show that Molybdenum Target Mammography and Color Doppler Ul

  18. 彩色多普勒超声对下肢深静脉血栓形成的诊断价值%Application value of color Doppler ultrasound in diagnosing lower extremity deep venous thrombosis

    Institute of Scientific and Technical Information of China (English)

    靳静

    2016-01-01

    目的 探讨彩色多普勒超声对下肢深静脉血栓形成的诊断价值.方法 选取2011年3月至2015年11月河北省廊坊市人民医院行彩色多普勒超声检查的下肢深静脉血栓形成患者63例,结合患者临床表现,分析彩色多普勒超声检查结果.结果 63例下肢深静脉血栓形成患者经彩色多普勒超声检查,左下肢40例(63.5%),右下肢20例(31.7%),双下肢2例(3.2%),漏诊1例(1.6%),诊断率为98.4%(62/63).62例确诊患者中急性栓塞14例(22.2%),亚急性栓塞40例(63.5%),慢性栓塞8例(12.7%).结论 应用彩色多普勒超声对下肢深静脉血栓高危患者进行检查,无创安全、及时准确、可重复操作且经济便捷,为临床提供可靠的诊断依据,是诊断下肢深静脉血栓形成的首选辅助检查方法.%Objective To explore the value of color Doppler ultrasound in diagnosing lower extremity deep venous thrombosis.Methods Sixty-three cases with lower extremity deep venous thrombosis who underwent color Doppler ultrasound from March 2011 to November 2015 were enrolled.The results of color Doppler ultrasound were analyzed based on clinical data.Results Totally 40 cases (63.5%) of left lower limb,20 cases (31.7%) of right lower limb and 2 cases (3.2%) of bilateral lower limb deep venous thrombosis were diagnosed by color Doppler ultrasound,1 case (1.6%) was missed,with diagnostic rate of 98.4% (62/63);among the 62 patients,14 cases (22.2%) were confirmed as acute lower extremity deep venous thrombosis,40 cases (63.5%) were confirmed as subacute lower extremity deep venous thrombosis and 8 cases (12.7%) were confirmed as chronic lower extremity deep venous thrombosis.Conclusion Color doppler ultrasound is non-invasive,safe,timely,accurate,repeatable,inexpensive and convenient,and is a preferred method for diagnosing lower extremity deep venous thrombosis.

  19. Clinical Value of Color Doppler Ultrasound in Diagnosis of Accessory Breast%彩超诊断副乳腺的临床价值分析

    Institute of Scientific and Technical Information of China (English)

    田涛

    2015-01-01

    目的:探讨彩色多普勒超声对副乳腺的诊断价值,以便为临床诊治和随访提供可靠的影像学依据。方法选取2008年4月~2012年8月在我院经高频超声及临床诊治的21例副乳患者,回顾性分析超声声像图特征,并鉴别诊断。结果副乳就是多余的乳房,一般发生在腋前区或腋下,也可见于胸壁、腹部等。副乳大多成对出现,对称分布,一般都比正常乳房要小,平常期的副乳实质回声一般略低于正常乳腺组织或强弱相间,高于脂肪组织,边界不整齐,无包膜,乳腺小叶结构不完整,实质内大多无明显的血流分布,与正常乳腺有明显分界,可发生小叶增生、导管扩张、纤维腺瘤、副乳癌等。结论高频超声是诊断副乳腺病变最为实用和有效的检查手段,且适用于哺乳期妇女,便于临床诊治和随访。%Objective To investigate the diagnostic value of color Doppler ultrasound in the diagnosis and treatment of accessory breast in order to provide reliable imaging evidence for clinical diagnosis and follow-up. Methods 21 cases of high frequency ultrasound and clinical diagnosis and treatment of the two patients were selected in our hospital in April 2008~August 2012, retrospective analysis of the ultrasonographic features and differential diagnosis. Results Accessory breast generally occurs in the anterior axillary region or axillary, are also found in the chest, abdomen etc. accessory breast mostly appear in pairs, symmetrical distribution, generally than normal breast to small, usual accessory breast parenchyma echo generally slightly lower than normal breast tissue or strength of the interphase, higher than the adipose tissue, irregular borders, no capsule, breast lobular structure is not complete, parenchyma mostly without obvious blood flow distribution, a clear demarcation with normal breast, can occur as a result of lobular hyperplasia, duct dilatation

  20. 彩色多普勒超声在新生儿先天性心脏病诊断中的应用%Application of color doppler ultrasound in diagnosis of congenital heart disease

    Institute of Scientific and Technical Information of China (English)

    王刚强

    2011-01-01

    目的 探讨彩色多普勒超声诊断新生儿先天性心脏病的应用.方法 对有心脏杂音、胸片提示心影增大以及不明原因发绀等可疑先天性心脏病病例予彩色多普勒超声心动图检查,利用彩色多普勒血流显像仪,观察心脏各切面结构和彩色血流特征.结果 先天性心脏病中房间隔缺损45例(占50.56%),动脉导管未闭26例,室间隔缺损11例,三尖瓣下移畸形1例,心内膜垫缺损2例,先天性肺动脉扩张1例.结论 新生儿先天性心脏病的诊断主要依据是超声二维图及彩色多普勒血流图,新生儿的先心病中以房间隔缺损最常见.%Objective To explore the application of color doppler ultrasound diagnosis of congenital heart disease . Methods Using color Doppler flow imaging instrument to observe the heart of the section structure and color flow characteristics. Results Atrial septal defect with congenital heart disease in 45 cases (accounting for 50. 56% ), 26 cases of patent ductus arteriosus, ventricular septal defect in 11 cases, 1 case of Ebstein malformation, 2 cases of endocardial cushion defect, congenital pulmonary expansion 1 case. Conclusions The diagnosis of congenital heart disease is based on two - dimensional ultrasound and Color Doppler flow imaging, in congenital heart disease of the newborn the most common case is atrial septal defect.

  1. The effect of isometric exercise of the hand on the synovial blood flow in patients with rheumatoid arthritis measured by color Doppler ultrasound

    DEFF Research Database (Denmark)

    Ellegaard, Karen; Torp-Pedersen, Søren; Lund, Hans

    2013-01-01

    In 90% of patients with rheumatoid arthritis (RA), the joints of the hand are affected. Studies of grip strength training have not indicated a negative effect on disease activity after training. Introduction of ultrasound Doppler (USD) to measure increased blood flow induced by inflammation has...

  2. A comparison of cell-free placental messenger ribonucleic acid and color Doppler ultrasound for the prediction of placental invasion in patients with placenta accreta

    Directory of Open Access Journals (Sweden)

    Elham Naghshineh

    2015-01-01

    Conclusions: Cell-free mRNA is an acceptable, easy made, functional test with sensitivity, specificity, PPV and NPV more than Doppler ultrasound for diagnosis and prediction of incidence of placenta accrete and we recommend the use of cell-free mRNA test for diagnosis of placenta accreta.

  3. Clinical Analysis of Color Doppler Ultrasound and X-ray Mammography in Screening Female Breast Cancer%彩超与X线钼靶筛查妇女乳腺癌临床分析

    Institute of Scientific and Technical Information of China (English)

    冯庆菁; 骆有寿; 徐惊; 黄晓芸; 朱超群; 周广慧

    2016-01-01

    Objective To discuss the effect of color Doppler ultrasound and x-ray mammography in screening female breast cancer. Methods 118 cases of patients with breast cancer diagnosed in our hospital from October 2012 to October 2015 were selected and screened and diagnosed with color Doppler ultrasound and X-ray mammography, and the diagnostic re-sults of them were compared. Results The coincident rate and detection rate of blood flow signal of color ultrasonic diagno-sis were obviously higher than those of x-ray mammography diagnosis, and the differences were obvious(P<0.05), the calci-fication detection rate of x-ray mammography was higher than that of the color Doppler ultrasound, and the difference was obvious(P<0.01), the coincident rate of pathological report and color ultrasonic diagnosis was 93.22%(110/118), the coinci-dent rate of X-ray mammography diagnosis was 79.66%(94/118), and the sensitivity, specificity, missed detection rate and misdiagnosis rate were respectively 93.55%, 97.70%, 6.45% and 2.30%. Conclusion Both color Doppler ultrasound and x-ray mammography in diagnosis of breast cancer are effective diagnostic methods, and each has its advantages and disadvan-tages, which can be selected according to the specific conditions of patients.%目的:探究彩超与X线钼靶对妇女乳腺癌的筛查效果。方法整群选择该院2012年10月—2015年10月确诊的118例乳腺癌患者,对其采用彩超和X线钼靶进行筛查诊断,对比两者诊断结果。结果彩超诊断符合率、血流信号检出率显著高于X线钼靶诊断,差异有统计学意义(P<0.05);X线钼靶的钙化检出率高于彩超,差异有统计学意义(P<0.01)。彩超诊断病理报告符合率为93.22%(110/118),X线钼靶诊断符合率为79.66%(94/118),彩超检查的灵敏度为93.55%,特异度为97.70%,漏检率为6.45%,误诊率为2.30%。结论彩超与X线钼靶诊断乳腺癌均为有效诊断方式,且各有利弊,可根据患者具体情况选择。

  4. Prognostic Value of Cardiac Time Intervals by Tissue Doppler Imaging M-Mode in Patients With Acute ST-Segment-Elevation Myocardial Infarction Treated With Primary Percutaneous Coronary Intervention

    DEFF Research Database (Denmark)

    Biering-Sørensen, Tor; Mogelvang, Rasmus; Søgaard, Peter;

    2013-01-01

    Background- Color tissue Doppler imaging M-mode through the mitral leaflet is an easy and precise method to estimate all cardiac time intervals from 1 cardiac cycle and thereby obtain the myocardial performance index (MPI). However, the prognostic value of the cardiac time intervals and the MPI...... assessed by color tissue Doppler imaging M-mode through the mitral leaflet in patients with ST-segment-elevation myocardial infarction (MI) is unknown. Methods and Results- In total, 391 patients were admitted with an ST-segment-elevation MI, treated with primary percutaneous coronary intervention......, and examined by echocardiography a median of 2 days after the ST-segment-elevation MI. Outcome was assessed according to death (n=33), hospitalization with heart failure (n=53), or new MI (n=25). Follow-up time was a median of 25 months. The population was stratified according to tertiles of the MPI. The risk...

  5. Biplane transesophageal echocardiography in the normal cat.

    Science.gov (United States)

    Kienle, R D; Thomas, W P; Rishniw, M

    1997-01-01

    Eight healthy, adult cats were examined with biplane transesophageal echocardiography (TEE). Cats were sedated with a combination of diazepam and propofol and were examined using a 5 mm x 80 cm pediatric biplane TEE probe. Consistent images were obtained at three imaging depths within the esophagus. The caudal position provided satisfactory short-axis images of the left ventricle and heart base. The middle position provided the best long-axis views of the left atrium, left ventricle, and aorta and allowed Doppler examination of transmitral left ventricular inflow. The cranial position provided satisfactory imaging of the aorta and pulmonary artery and allowed Doppler examination of right ventricular and left ventricular outflow. Biplane TEE provides an additional method of imaging the feline heart which is complimentary to other imaging techniques and the images obtained were similar to those reported for dogs. Although TEE offers a slight advantage over transthorcic imaging for Doppler examination, the quality of the images of heart base structures was not as consistently superior to transthoracic images in cats as reported in dogs.

  6. Tissue Doppler Findings in Patients with Pulmonary Arterial Hypertension

    Directory of Open Access Journals (Sweden)

    Firoozeh Abtahi

    2016-09-01

    Full Text Available In conclusion, our results suggested that increasing degrees of pulmonary artery systolic pressure affected timing of some tissue Doppler-derived intervals within the cardiac cycle, including IVC time, time to peak systolic myocardial velocity (Sm, and time to peak strain. Therefore, tissue Doppler imaging could be used in assessment of patients with suspected pulmonary arterial hypertension. Background: Pulmonary hypertension is an untreatable condition with poor prognosis and factors such as more elevated pulmonary arterial systolic pressure and right ventricular dysfunction are associated with a worse outcome. Objectives: Considering the limitations of the current modalities, this study aimed to find the relationship between tissue Doppler-derived systolic and diastolic parameters and elevated pulmonary arterial pressure in order to assess the routine application of tissue Doppler imaging in evaluation of pulmonary arterial hypertension. Patients and Methods: This study was conducted on 100 inpatient and outpatient individuals referred to the Department of Echocardiography in Shahid Faghihi hospital, Shiraz, Iran from July 2012 to March 2013. The individuals who had preserved right ventricular function in the presence of pulmonary arterial hypertension were included in the case group. On the other hand, the patients who did not have echocardiographic signs of pulmonary arterial hypertension were enrolled into the control group. All the patients underwent a complete transthoracic echocardiogram including 2-dimensional, color flow, and spectral Doppler as well as tissue Doppler imaging using a vivid E9 system, and the desired systolic and diastolic parameters were recorded. The relationship among these parameters was evaluated by independent sample t-test using the SPSS statistical software, version 16. Besides, P < 0.05 was considered to be statistically significant. Results: The mean time to peak strain was significantly longer in the case

  7. The Evaluation of Diagnoses and Management in Cesarean Scar Pregnancy with Color Doppler Ultrasound%彩色超声在子宫疤痕妊娠诊治中的作用

    Institute of Scientific and Technical Information of China (English)

    张小英; 彭艳丽; 陈涛; 朱亚利; 魏金铭; 王燕; 贾娟

    2011-01-01

    目的 评价彩色超声在疤痕妊娠诊治中的作用.方法 使用经阴道超声诊断疤痕妊娠病例进行保留生育能力的保守治疗.记录子宫疤痕孕囊时间、超声结果、β-hCG、经阴道彩色超声血流情况和手术方式及经腹超声在术中监测情况.结果 孕囊诊断时间约6周左右,剖腹产时间至疤痕妊娠时间为9 - 126月.经阴道超声诊断疤痕妊娠如下:孕囊大小0.8cm×0.4cm×0.5cm至2.2cm×2.1cm×1.0cm,有胎心,头臀径0.3cm至0.7cm,前壁肌层厚度0.5cm,血流显像丰富.对患者进行如下处理:子宫动脉栓塞后24小时在超声监测下行官腔镜吸官人流术2例,子官动脉栓塞失败+系统MTX化疗,经阴道超声检查孕囊仍存活,患者自动出院,后随访得知官腔镜下行吸官人流术,证实疤痕妊娠1例.结论 经阴道超声是子宫疤痕妊娠早期诊断非常有用手段,在经腹超声术中监测,明显缩短手术时间,减少盲目性,保证了手术安全.%Objecive To evaluate our experience and diagnosis of cesarean scar pregnancy(CSP) with color doppler ultrasound. Msthods From March 2006 to June 2010, 3 cases of cesarean scar pregnancy were diagnosed using color doppler sonography and treated conservatively to preserve fertility. Gastational age, sonographic findings, /3-human chorionic gonadotropin(/3-hCG) levels, flow profiles of transvaginal color Doppler ultrasound, and trasabdominal sonography during treatment were recorded. Results The gastational sac(GS) ages were diagnosed for about 6 weeks. The time interval from the Cesarean section to the diagnosis of Cesarean scar pregnancy was from 9 months to 126 months. Embryonic period diagnosed by color doppler sonography were as follow: the sizes of GS ranged from 0.8cm X 0.4cmx0.5cm to 2.2cm X2.1cmxl. 0cm, all with cardiac activity, the crown-rump length ranged from 0.3cm to 0.7cm, the anterior myometrial thickness to the csp were measured 0.5cm with rich color flow show. The patients were

  8. 产前应用彩色多普勒超声诊断胎儿心脏畸形的临床价值%Clinical value of color Doppler ultrasound in diagnosis of fetal cardiac malformations

    Institute of Scientific and Technical Information of China (English)

    丁宏军

    2015-01-01

    Objective To study the clinical value of color Doppler ultrasound in the diagnosis of fetal cardiac malformations. Methods From our hospital 176 cases (69 cases of maternal heart disease) in pregnant women as the research object, the fetuses of color doppler ultrasound,Analysis of ultrasound images and compare postnatal pathological results.Results Two checking methods of coincidence rate was 84.62%, the difference was not statistically significance (P > 0.05). And the mother has a history of heart disease, fetal heart disease 13.04%; The mother has no history of heart disease, fetal heart disease 1.87%.Conclusion Pregnant women have a history of heart disease especially pay attention to the growth of fetus during pregnancy, and color doppler ultrasonography can diagnose cardiac malformation fetus,and the diagnosis rate is high, no obvious adverse reactions, so the method is worthy of clinical application and promotion.%目的::研究产前应用彩色多普勒超声诊断胎儿心脏畸形的临床价值。方法:选取我院176例(其中69例母体有心脏病史)中孕期的妇女作为研究对象,对腹中的胎儿进行彩色多普勒超声检查,检查胎儿心脏情况,分析超声图像并对比产后胎儿的病理检查结果。结果:两种检查方法的符合率为84.62%,差异没有统计学意义(P>0.05)。且母体有心脏病史,胎儿有心脏病的比例为13.04%;母体没有心脏病史,胎儿有心脏病的比例为1.87%。结论:孕妇有心脏病史时在怀孕期间尤其注意胎儿的发育情况,另外彩色多普勒超声可以诊断胎儿心脏畸形,且诊断率高,无明显不良反应,因此该方法是值得临床上应用以及推广的。

  9. 高频彩超对下肢深静脉血栓的诊断研究%High frequency color Doppler ultrasound to research on the diagnosis of lower extremity deep vein thrombosis

    Institute of Scientific and Technical Information of China (English)

    王晓燕

    2015-01-01

    Objective: to investigate the diagnostic value of high frequency color doppler ultrasound in deep venous thrombosis of lower extremity. Methods:176 patients with lower extremity edema in our hospital from January 2013 to January were selected, and all patients were examined with color doppler ultrasound and the diagnostic results were analyzed.Results: 176 patients with deep venous thrombosis in the lower extremity in 62 patients, including 40 patients with left lesion, 14 patients with right side lesions, 8 patients with bilateral lesions. acute lower extremity deep venous thrombosis in 42 patients, 20 patients with chronic lower extremity venous thrombosis. thrombus in the anterior tibial veins, posterior tibial vein and calf muscular venous plexus were 19 cases, femoral vein and popliteal vein thrombus in a 43 cases. Conclusion: high frequency color doppler ultrasound in the diagnosis of lower extremity deep venous thrombosis with high sensitivity, is a noninvasive method for the diagnosis of lower limb venous thrombosis, which provides an important basis for clinical treatment.%目的:探讨高频彩超对下肢深静脉血栓的诊断意义。方法:选取2013年1月-2015年1月我院收治的下肢水肿患者176例,所有患者采取彩超高分辨率探头检查,分析其诊断结果。结果:176例患者中下肢深静脉血栓患者62例,其中左侧病变患者40例,右侧病变患者14例,双侧病变患者8例。急性下肢深静脉血栓患者42例,慢性下肢静脉血栓患者20例。血栓部位位于胫前静脉、胫后静脉以及小腿肌间静脉丛的患者19例,血栓部位位于股静脉、腘静脉的有43例。结论:高频彩超诊断下肢深静脉血栓具有较高的敏感性,是诊断下肢静脉血栓形成的一种无创方法,为临床治疗提供重要的依据。

  10. Color doppler blood flow imaging in twin reversed arterial perfusion sequence%彩色多普勒超声诊断双胎反向动脉灌注序列征

    Institute of Scientific and Technical Information of China (English)

    李雪蕾; 李昌安; 穆仲平

    2012-01-01

    目的探讨彩色多普勒超声诊断双胎反向动脉灌注序列征的价值.方法对5例双胎反向动脉灌注序列征的产前彩色多普勒超声检查结果进行回顾性分析,并与产后结果对照,总结声像图表现及诊断要点.结果 5例于产前彩色多普勒超声检查中发现并于产后证实为双胎反向动脉灌注序列征;5例均为单绒毛膜双胎,其中3例为单羊膜囊,2例为双羊膜囊;5例均为无脑、无心畸胎.结论彩色多普勒超声检查可以准确并及早诊断双胎反向动脉灌注序列征,有助于指导临床实现优生优育.%Objective To detect the diagnostic value of color doppler blood flow imaging in twin reversed arterial perfusion sequence. Methods Review and analysis of 5 cases of twin reversed arterial perfusion sequence were examined by color Doppler, and compared with the results of the clinical diagnosis after delivery. The main points of diagnosis were summarized. Results The twin reversed arterial perfusion sequence was observed in prenatal examination and demonstrated in postpartum through prenatal ultrasonic inspection system of 5 inspection objects. All 5 cases were confirmed to monochorionic twin. Among them 3 cases were monoamnionic twin and 2 cases were diamnionic twin. All 5 cases were anencephalia and acardia. Conclusion Color doppler imaging can provide accurate diagnoses with twin reversed arterial perfusion sequence timely, and will offer available instructions on clinical therapy to achieve prenatal and postnatal care.

  11. The screening value in the first-trimester fetuses by color Doppler flow image%彩色多普勒超声应用于11~14周胎儿筛查的价值

    Institute of Scientific and Technical Information of China (English)

    王莉; 吴青青; 陈焰; 姚苓; 马玉庆; 杨文娟; 李晓菲

    2011-01-01

    Objective To examine the value of color Doppler flow image CDFI)in the screening of first-trimester fetus. Methods Two thousand and three hundred and eighty cases in first-trimester were screened by the color Doppler ultrasonography. Results A total of 2426 fetuses included 46 twins. Twenty-eight fetuses were abnormal including 8 cases of NT≥3. 0 mm and 11cases of NT≥3. 0 mm with the other abnormalities. Eight cases of abnormal anatomical structures included 1 case of multiplicitas, 1 case of cephalocele, 1 case of partial hydatidiform mole, 1 case of choroid plexus cysts ,4 case of central nerve system abnormalities( 3 cases of exencephaly ,1 case of anencephaly )and 1 case of reversal "A" wave in ductus venosus flow.Conclusion The Color Doppler ultrasonographic examination can provide the important hereditary information for prenatal screening of first-trimester fetus and screen fetal serious abnormal anatomical structures.%目的 探讨彩色多普勒超声用于11~14周胎儿筛查的价值.方法 应用彩色多普勒超声对2380例孕11~14周(胎儿头臀长在45~84 mm之间)的孕妇进行检查.结果 胎儿总数2426例,其中单胎2334例,双胎46例.共发现可疑异常胎儿28例:(1)颈项透明层(NT)≥3.0 mm 8例.(2)NT≥3.0 mm合并其他异常11例.(3)胎儿单纯解剖结构异常8例(1例多发畸形,1例脐膨出,1例胎盘部分性葡萄胎,1例脉络丛囊肿,4例中枢神经系统畸形包括露脑畸形3例、无脑儿1例).(4)静脉导管血流频谱异常1例.结论 彩色多普勒超声检查用于11~14周胎儿筛查能够提供重要的遗传学信息,发现严重的胎儿解剖结构异常.

  12. Application of color Doppler ultrasound for diagnosing lower extremity venous vascular diseases%彩超在诊断下肢静脉血管疾病中的应用

    Institute of Scientific and Technical Information of China (English)

    舒银敏

    2015-01-01

    目的 分析研究彩超在下肢静脉血管疾病诊断中的应用价值.方法 选取我院收治的120例下肢静脉疾病患者,采用回顾性分析法,对彩超在患者下肢静脉疾病诊断中的应用以及诊断结果进行分析研究.结果 120例下肢静脉疾病患者中,108例患者的检查诊断结果为阳性,其中静脉血栓患者76例,静脉瓣功能不全患者23例,其他静脉疾病患者9例.结论 彩超在进行下肢静脉血管疾病诊断中不仅具有简便、迅速与安全的特征优势,并且进行患者病症检查诊断的客观性比较突出,值得在临床中进行推广应用.%Objective:analyze and research application value of color Doppler ultrasound for diagnosing lower extremity venous vascular diseases.Methos:choose 120 cases patients with lower extremity venous vascular diseases received in our hospital, and review and analyze application of color Doppler ultrasound for diagnosing lower extremity venous vascular diseases and its diagnosing effects.Result:108 cases of 120 patients with lower extremity venous vascular diseases showed positive after examination and diagnosis, and 76 cases are Venous thrombosis, 23 cases Venous valve insufficiency, 9 cases other venous diseases.Conclusion:during diagnosis for lower extremity venous vascular diseases color Doppler ultrasound has advantages and features of being simple, rapid and safe, and has objectivity during diagnosis, which is worth of being spreaded clinically.

  13. 彩色多普勒超声对小腿三头肌内静脉扩张的诊断价值%Diagnosis value of color Doppler ultrasonography phlebectasia in triceps surae

    Institute of Scientific and Technical Information of China (English)

    柳展梅; 鄂占森; 吕海霞; 张颖; 陈峥; 赵新宇

    2012-01-01

    Objective To investigate diagnosis value of color Doppler ultrasonography phlebectasia in triceps surae. Methods A total of 72 patients with inspected veins in triceps were enrolled,male 32,female 40,aged 28 - 92 years old,mean age 56 years old. The color Doppler ultrasonography was performed to inspect veins in triceps muscle(included soleus and gastrocnemius vein) and measured the diameters. The endovascular sound transmission and blood flow were observed and inspected the perforating veins. Results A total of 72 cases of the veins in triceps muscle were checked out,32 cases (44.4 %) of simple triceps surae phlebectasia,16 cases of combined thrombosis,24 cases of combined communicating branch phlebectasia. Conclusion It is demonstrated that the color Doppler ultrasound could be effective in detection phlebectasia in triceps surae,thrombosis and perforating veins ,it is an crucial content of ultrasound examination for deep veins.%目的 探讨彩色多普勒超声对小腿三头肌内静脉扩张的诊断价值.方法 选择72例疑为下肢深静脉病变的患者,其中男性32例,女性40例;年龄28~ 92岁,平均年龄56岁.应用彩色多普勒超声检查小腿三头肌内静脉(包括比目鱼肌静脉及腓肠肌静脉),测量其管径,观察管腔内透声及血流情况,探查其交通支的情况.结果 共检出小腿三头肌内静脉受累患肢72条,单纯小腿三头肌内静脉扩张32例(44.4%),合并血栓16例(22.2%),合并交通静脉扩张24例(33.3%).结论 彩色多普勒超声能够有效地检出小腿三头肌内静脉扩张及血栓、其交通支情况,是超声检查下肢深静脉时不容忽视的重要内容.

  14. 彩色多普勒超声检查乳腺肿块20例分析%Analysis of 20 cases with breast disease examined by Color Doppler Flowing Imaging

    Institute of Scientific and Technical Information of China (English)

    黄冬梅; 邹成银

    2014-01-01

    Objective To analyze the clinical diagnosis value of Color Doppler Flowing Imaging in the diag-nosis of female breast mass ,discuss sonographic features of breast hyperplasia and maeexy dyeplesle .Methods The data of 20 patients with breast disease which diagnosed by Color Doppler Flowing Imaging were retrospectively ana -lyzed,some cases were conducted postoperative pathological examination .Results In all cases,13 cases were breast fibroadenoma(65.0%),6 cases were maeexy dyeplesle (30.0%),1 case was metaplastic squamous cell carcinoma (5.0%).The typical fibroadenoma had regular shape ,clear boundary and homogeneous internal echo ,and were mar-ginated smoothly with a fine echoic capsule and a lateral wall shadowing .Conclusion Color Doppler ultrasonography is an approach for noninvasive and simple examination of breast lesion ,and worthwhile for spreading in clinical prac-tice .Analysis of the ultrasonographic performance of breast fibroadenoma is helpful to the diagnosis and differential di -agnosis of breast disease ,which can also improve the level of diagnosis .%目的:分析乳腺纤维腺瘤与乳腺结构不良症的影像学特征,探讨彩色多普勒超声检查女性乳腺肿块的临床诊断价值。方法回顾性分析20例女性彩色多普勒超声检查资料,部分病例术后病理检查。结果20例患者中,乳腺纤维腺瘤13例(65.0%),乳腺结构不良症6例(30.0%),乳腺化生性癌1例(5.0%)。典型的乳腺纤维腺瘤声像学表现形态规则、境界清晰,内回声均质。结论彩色超声检查乳腺病变简便有效无创,值得临床广泛推广。分析乳腺纤维腺瘤的声像图表现,有助于乳腺病的诊断和鉴别诊断,提高诊断水平。

  15. 新生儿室管膜下出血的彩色多普勒超声诊断价值分析%Neonatal subependymal hemorrhage analysis of the diagnostic value of color doppler ultrasound

    Institute of Scientific and Technical Information of China (English)

    余奕慧; 卓琳琅

    2016-01-01

    Objective To Analysis color doppler ultrasound diagnosis value in neonatal subependymal hemorrhage. Methods During February 2014 to February 2015,49 cases diagnosed as subependymal hemorrhage were set as observation group,the other 49 cases healthy newborn as control group,to all newborns of color doppler ultrasound. Results The SPV and DPV observation group was obviously higher than that of control group,P<0. 05). For observation group of children,the lower side of the SPV and DPV significantly higher than that of the healthy side,P<0. 05). Conclusion Color doppler ul-trasound can clearly show the actual situation of children subependymal hemorrhage, and it also has the advantages of low cost,safety,and can be used repeatedly. Therefore,it can be used in the diagnosis of neonatal subependymal hemorrhage.%目的:分析彩色多普勒超声诊断法用于新生儿室管膜下出血中的价值。方法选取2014年2月至2015年2月期间,49例诊断为室管膜下出血的患儿设为观察组,另选取49例健康新生儿作为对照组,对所有新生儿进行彩色多普勒超声检查。结果观察组SPV与DPV明显高于对照组,P<0.05。针对观察组患儿,其患侧SPV与DPV明显高于健侧,P<0.05。结论彩色多普勒超声能清楚显示患儿室管膜下出血的实际情况,且其还具备价格低廉、安全与可反复使用等优点。故,可将其用于新生儿室管膜下出血的诊断中。

  16. Clinical comparison of transabdominal and transvaginal color doppler ultrasound in diagnosis of early ectopic pregnancy%经腹及经阴道彩超诊断早期异位妊娠的临床对比分析

    Institute of Scientific and Technical Information of China (English)

    刘波

    2014-01-01

    目的:对比分析经腹及经阴道彩色多普勒超声在早期异位妊娠临床诊断中的应用价值。方法回顾我院2012年3月至2014年1月期间98例疑似异位妊娠患者临床资料、经腹彩色多普勒超声(tacds)检查结果、经阴道彩色多普勒超声(tVcds)检查结果及手术病理诊断结果。结果98例疑似异位妊娠患者,经手术病理确诊异位妊娠96例, tacds 检查诊断61例,符合率63.54%;tVcds 检查诊断88例,符合率91.67%。结论 tVcds 较 tacds 早期异位妊娠诊断率高,应在临床中推广应用。%Objective to investigate the clinical diagnosis value of transabdominal and transvaginal color doppler ultrasound in diagnosis of early ectopic pregnancy. Methods clinical data of 98 patients with suspected ectopic pregnancy in our hospital from March 2012 to January 2014 were reviewed including test results of transabdominal color doppler ultrasound (tacds),transvaginal color doppler ultrasound (tVcds) and surgical pathology. Results 98 patients with suspected ectopic pregnancy were confirmed 96 cases of ectopic pregnancy with pathologically . TACDS diagnosed 61 cases , in line with the rate of 63.54%; tVcds diagnosed 88 cases , in line with the rate of 91.67%.Conclusion compared tacds ,tVcds in early diagnosis of ectopic pregnancy has higher diagnosis rate, clinical application should be promoted.

  17. Clinical Value of Color Doppler Ultrasound in Diagnosis of Uterine Cavity Effusion%彩色多普勒超声对诊断宫腔积液性疾病的临床价值

    Institute of Scientific and Technical Information of China (English)

    黄冬玲

    2016-01-01

    目的::探讨彩色多普勒超声对宫腔积液性疾病的诊断价值。方法:选取东莞市石碣医院2013年4月~2015年4月收治的宫腔积液患者100例,分别采用经腹或经阴道彩色多普勒超声诊断,将检测结果与病检结果对照。结果:病理诊断宫腔粘连23例,宫外孕21例,宫颈癌13例,宫颈粘连12例,其他为内膜息肉、内膜癌等。超声确诊80例,漏诊7例,误诊13例。经阴道超声诊断总符合率明显高于经腹(P <0.05)。结论:宫腔积液采用彩色多普勒超声诊断符合率较高,能为确诊病因提供客观依据,值得应用。%Objective:To study the diagnostic value of color Doppler ultrasound in the diagnosis of uter-ine cavity effusion.Methods:100 patients with uterine cavity effusion were treated in a hospital from April 2013 to April 2015,who were diagnosed by abdominal or transvaginal color Doppler ultrasound,then the re-sults of the disease were compared.Results:23 cases were diagnosed with intrauterine adhesions,21 cases of ectopic pregnancy,13 cases of cervical cancer,12 cases of cervical adhesion,other for endometrial polyps, endometrial cancer,etc.Ultrasonic diagnosis of 80 cases,7 cases were missed diagnosis,13 cases were mis-diagnosed.The total coincidence rate of transvaginal ultrasound was higher than that of the abdomen,and the misdiagnosis rate was lower than that of the abdomen,and there were statistical differences (P <0.05). Conclusion:Color Doppler ultrasound diagnosis of uterine cavity effusion can provide objective evidence for etiological diagnosis,and the diagnostic accuracy rate is higher,but it can be used as the method of screening the cause of uterine cavity effusion.

  18. 彩色多普勒超声在下肢深静脉血栓诊断中的应用%Color doppler ultrasound in the diagnosis of lower extremity deep vein thrombosis

    Institute of Scientific and Technical Information of China (English)

    曾秀芳; 李志海; 郭芳青

    2010-01-01

    Objective To explore the value of color doppler ultrasound in the diagnosis of lower extremity deep vein thrombosis (DVT). Methods 36 patients with lower extremity DVT treated from January 2009 to December 2009 in our hospital were detected by color doppler ultrasound. Results The accurate rate of deep vein thrombosis in the lower extremity was 100.00%. 25 patients developed acute DVT.Two-dimension ultrasound showed the veins with embolism were widen, with low to moderate level of echo,without thickening dissepiments, and the lumens could not be press to closing. CDFI revealed signs of strip blood stream sign or without the signs. 11 patients had subacute or chronic DVT. Two-dimension ultrasound showed no obvious limit between dissepiments and thrombus, with thickening disaepiments and high level of echo. CDFI revealed signs of strip blood stream and affluent collateral branch blood stream. Conclusions Color doppler ultrasound is accurate and easy to run in the diagnosis of lower extremity deep vein thrombosis.It is worth popularizing.%目的 探讨彩色多普勒超声对下肢深静脉血栓(DVT)的诊断价值.方法 将2009年1月-2009年12月间在我院诊疗的下肢DVT患者36例进行彩色多普勒超声诊断,并了解其诊断价值.结果 彩色多普勒超声诊断准确率为100.00%.急性下肢DVT 25例,二维超声显示:栓塞静脉增宽,呈中低回声,管壁无增厚,管腔加压不能被压闭;CDFI可探及条状血流信号或无血流信号.亚急性和慢性下肢DVT 11例,二维超声显示:管壁与血栓界线欠清,管壁增厚,呈高回声;CDFI可探及条带状血流,可见丰富的侧支血流.结论 彩色多普勒超声对下肢DVT的诊断准确性高,操作方便,值得应用.

  19. Clinical value of color doppler ultrasonic diagnosis in gonarthromenigitis%彩色多普勒超声诊断膝关节滑膜炎的临床价值

    Institute of Scientific and Technical Information of China (English)

    万鑫

    2012-01-01

    Objective:To analyze the clinical application value of gonarthromenigitis by color doppler ultrasonic diagnosis and to conclude the characters of gonarthromenigitis ultrasonography. Methods: A total of 79 patients with gonarthromenigitis diagnosised by color doppler ultrasound in our hospital were collected to retrospective analysis. The characters of gonarthromenigitis ultrasonography were analyzed and compared to knee X-ray graphy and knee MRI graphy. Results:In detecting the changes of synovial hypertrophy, synovial morphology, arthroedema. Knee cartilage affection, the ultrasonography had satisfactory resolution power. The detection rates of above changes by ultrasonography were 92. 22%, 86. 67% . 83. 33% , 40. 00% respectively. The difference of detection rates between ultrasonography and X-ray graphy was significant ( P 0. 05). Conclusion: Color doppler ultrasonography was useful in the diagnosis of gonarthromenigitis. And was worth widing clinical application.%目的:探讨彩色多普勒超声对膝关节滑膜炎的声像图特点及其临床诊断价值.方法:回顾性分析我院79例诊断为膝关节滑膜炎患者,分析彩超检查声像图特点,并与膝关节X线平片及磁共振(MRI)作比较.结果:在滑膜厚度、滑膜形态、关节腔积液、软骨病变等方面彩超检查具有良好的分辨率,检出率分别为92.22%、86.67%、83.33%、40.00%,与膝关节X线平片比较,均有统计学差异(P<0.05);与膝关节MRI比较,均无统计学差异(P>0.05).结论:彩超对于膝关节滑膜炎的诊断具有较好的临床价值,值得推广.

  20. Ultrasonography and color Doppler in juvenile idiopathic arthritis: diagnosis and follow-up of ultrasound-guided steroid injection in the ankle region. A descriptive interventional study

    DEFF Research Database (Denmark)

    Laurell, Louise; Court-Payen, Michel; Nielsen, Susan;

    2011-01-01

    The ankle region is frequently involved in juvenile idiopathic arthritis (JIA) but difficult to examine clinically due to its anatomical complexity. The aim of the study was to evaluate the role of ultrasonography (US) of the ankle and midfoot (ankle region) in JIA. Doppler-US detected synovial...... hypertrophy, effusion and hyperemia and US was used for guidance of steroid injection and to assess treatment efficacy....

  1. Tissue Doppler imaging for detection of radial and longitudinal myocardial dysfunction in a family of cats affected by dystrophin-deficient hypertrophic muscular dystrophy.

    Science.gov (United States)

    Chetboul, Valérie; Blot, Stephane; Sampedrano, Carolina Carlos; Thibaud, Jean-Laurent; Granger, Nicolas; Tissier, Renaud; Bruneval, Patrick; Gaschen, Frederic; Gouni, Vassiliki; Nicolle, Audrey P; Pouchelon, Jean-Louis

    2006-01-01

    Diagnosis of feline hypertrophic cardiomyopathy currently is based on the presence of myocardial hypertrophy detected using conventional echocardiography. The accuracy of tissue Doppler imaging (TDI) for earlier detection of the disease has never been described. The objective of this sudy was to quantify left ventricular free wall (LVFW) velocities in cats with hypertrophic muscular dystrophy (HFMD) during preclinical cardiomyopathy using TDI. The study animals included 22 healthy controls and 7 cats belonging to a family of cats with HFMD (2 affected adult males, 2 heterozygous adult females, one 2.5-month-old affected male kitten, and 2 phenotypically normal female kittens from the same litter). All cats were examined via conventional echocardiography and 2-dimensional color TDI. No LVFW hypertrophy was detected in the 2 carriers or in the affected kitten when using conventional echocardiography and histologic examination, respectively. The LVFW also was normal for 1 affected male and at the upper limit of normal for the 2nd male. Conversely, LVFW dysfunction was detected in all affected and carrier cats with HFMD when using TDI. TDI consistently detects LVFW dysfunction in cats with HFMD despite the absence of myocardial hypertrophy. Therefore, TDI appears more sensitive than conventional echocardiography in detecting regional myocardial abnormalities.

  2. Application of Color Doppler Ultrasonography in the Prenatal Screening of Non-High Risk Fetus%彩色多普勒超声在非高危胎儿产前心脏筛查中的应用

    Institute of Scientific and Technical Information of China (English)

    王婷

    2016-01-01

    目的:探究彩色多普勒超声在非高危胎儿产前心脏筛查中的应用价值,通过胎儿产前心脏筛查以降低先天性心脏病患儿的出生率及死亡率。方法选取我院2013年12月~2015年12月收治的2352例处于孕20~24周的非高危胎儿作为实验组,同时选取同期341例高危胎儿作为对照组。这2693例均实施彩色多普勒超声检查,并对所有胎儿进行随访并随访至明确诊断,比较两组胎儿心脏畸形发生率以及非高危胎儿的畸形敏感性、特异性。结果实验组非高危胎儿心脏畸形的发生率低于对照组高危胎儿,差异有统计学意义(P<0.05)。非高危胎儿产前经彩色多普勒超声检查,其心脏畸形筛查的准确率为92.44%。四腔心和左、右室流出道切面筛查胎儿心脏崎形的特异性、敏感性分别为91.32%、99.9%。结论彩色多普勒超声在非高危胎儿产前心脏筛查中的应用价值较高,其诊断的特异度以及敏感度均较高。%Objective To explore the application value of color Doppler ultrasonography in the prenatal screening of non high risk fetus, birth rate and death rate in children with congenital heart disease by screening of fetal heart.Methods In our hospital from December 2013 to December 2015, 2 352 cases of non high risk fetus in 20 to 24 weeks of pregnancy were selected as experimental group, at the same time, 341 high-risk fetuses were selected as control group at the same time. All the 2 693 cases were examined by color Doppler ultrasound, and all the fetuses were followed up for deifnite diagnosis, the incidence rate of fetal heart rate and the abnormal sensitivity and specificity of the non - high risk fetus were compared between the two groups.ResultsIn the experimental group, the incidence rate of non high risk fetal heart malformation was lower than that of the control group, the difference was statistically signiifcant (P<0.05). The rate of screening for non

  3. Transvaginal color Doppler ultrasound in the diagnosis of endometrial lesions%经阴道彩色多普勒超声在子宫内膜病变诊断的应用价值

    Institute of Scientific and Technical Information of China (English)

    高鸣

    2015-01-01

    目的 探讨经阴道彩色多普勒超声在子宫内膜病变诊断中的应用价值,总结其应用经验.方法 对90例不规则阴道流血患者行经阴道彩色多普勒超声检查,分析其超声影像学资料,并将超声检查结果与诊刮以及患者术后病理诊断结果相对照.结果 本研究90例患者经阴道彩色多普勒超声检查确诊86例,其中子宫内膜增生36例、子宫内膜息肉42例,子宫内膜癌8例,确诊率为95.64%;漏诊4例,漏诊率为4.36%,其中1例子宫内膜癌病变,3例子宫内膜增生病变.结论 经阴道彩色多普勒超声检查子宫内膜病变操作简便、准确性高,超声检查时应注意测量子宫内膜厚度,观察内膜形态、内膜与肌层的关系、内膜回声特点以及子宫内膜内血流情况及阻力指数,作为诊断子宫内膜病变的重要检查方法,还需要结合患者的临床表现及其他影像学检查手段,以提高其确诊率.%Objective To investigate the application value of transvaginal color Doppler ultrasound in the diagnosis of endometrial lesions,and summarize the application experience.Methods Ninety patients with irregular vaginal bleeding underwent transvaginal color Doppler ultrasound examination,the ultrasound image data were analyzed,and the ultrasonic inspection results and curettage and postoperative pathological diagnosis results were compared.Results Among the 90 cases,86 cases were diagnosed by transvaginal color Doppler ultrasound,of which 36 cases of endometrial hyperplasia,42 cases of endometrial polyps,endometrial carcinoma in 8 cases,the diagnosis rate was 95.64% ; 4 cases of missed diagnosis,the missed diagnosis rate was 4.36%,in which l case of endometrial carcinoma lesions,3 cases of uterus hyperplasia lesions.Conclusions Transvaginal color Doppler ultrasonography for endometrial lesions has simple operation,high accuracy,we should pay attention to measure the thickness of endometrium,endometrial morphology

  4. 四维彩超在胎儿先天性畸形中的临床诊断价值%Four-dimensional color Doppler ultrasound in examination in prenatal screening of fetal malformation

    Institute of Scientific and Technical Information of China (English)

    罗妙云

    2014-01-01

    目的 探讨四维彩超在胎儿先天性畸形中的诊断价值.方法 随机观察我院2012年1月至2014年1月孕中晚期孕妇1200例产前常规超声检查结果,所有孕妇均进行了二维超声和四维超声检查,并随访至产后1个月,比较二维超声和四维超声诊断胎儿先天性畸形的准确性.结果 经产后临床证实,共发现先天性胎儿畸形34例,其中神经管畸形10例,心脏畸形8例,唇腭裂7例,泌尿系畸形3例,四肢畸形3例,腹部畸形1例,其他2例.四维超声检出畸形31例,与产后符合率91.17%;漏诊3例,其中多指畸形1例,脊柱裂2例.二维超声检出畸形26例,符合率76.47%;漏诊8例,其中唇腭裂2例,多指畸形2例,脊柱裂3例,足内翻1例.二维和四维超声的诊断符合率比较差异具有统计学意义(P<0.05).结论 四维超声更能多方位、多切面观察胎儿宫内发育情况,对诊断胎儿体表畸形具有更直观和准确的判断,具有较高的临床价值.%Objective To investigate the diagnostic value of four-dimensional (4D) color Doppler ultrasound examination in prenatal screening of fetal malformation.Methods 1200 pregnant women were observed and detected by four-dimensional color Doppler and two dimensional ultrasound.The results were compared with the results confirmed by clinical pathology.Results 34 cases were detected with congenital defects; among which,10 got defects in nervous system,8 heart deformity,7 cheilopalatognathus,3 urinary tract malformation,3 limb deformity,1 abdominal deformity,and the other 2 cases.31 cases were detected with deformity by four-dimensional color Doppler,with a postpartum coincidence rate of 91.17%; and 3 cases were misdiagnosed,of which 1 case had polydactyly deformity and 2 cases spina bifida.26 cases were detected with deformity by two-dimensional ultrasony,with a postpartum coincidence rate of 76.47%; and 8 cases were misdiagnosed,of which 2 cases had cleft lip and palate,2 case polydactyly

  5. Value of High-frequency Color Doppler Ultrasound in Diagnosis of Inguinal Hernia in Senile Men%高频彩色多普勒超声在诊断老年性腹股沟疝中的价值

    Institute of Scientific and Technical Information of China (English)

    王福明; 衷爱华; 郭金强

    2011-01-01

    目的 探讨高频彩色多普勒超声(高频彩超)在诊断老年性腹股沟疝中的价值.方法 回顾性分析80例老年性腹股沟疝的高频彩超检查的影像资料,观察疝囊内容物及血流显示,并结合临床按照疝囊颈部内径对腹股沟疝进行分型描述.结果 以腹壁下动脉作为标志,确定腹壁下动脉与疝囊颈的关系,鉴别腹股沟的斜疝、直疝.腹股沟疝的声像表现:在腹股沟区探及由疝囊和内容物组成的混合性包块回声,疝囊口与腹腔相通,当内容物为肠管可表现为肠管壁、肠腔气体及肠腔内容物回声;当内容物为大网膜时可表现为簇状杂乱回声团或筛网状回声光团.疝囊内容物彩色多普勒血流显示:易复性疝显示红、蓝条状或点状较多血流信号;难复性和嵌顿疝血流显示减少,呈散在棒状或星点状血流信号;绞窄性疝显示无血流或少许星点状血流信号.结论 高频彩超可作为老年性腹股沟疝诊断的首选检查方法.%Objective To investigate the value of high-frequency color Doppler ultrasound in the diagnosis of inguinal hernia in senile men. Methods Image data of high-frequency color Doppler ultrasound examination were analyzed retrospectively in 80 elderly patients with inguinal hernia,and hernial contents and blood flow were observed. The hernia was classified according to the diameter of internal hernial ring and the clinical symptoms. Results Considering the inferior epigastric artery as a reference,the relation between inferior epigastric artery and hernia sac neck was revealed,and direct and indirect inguinal hernias were identified. On ultrasound images,inguinal hernia was represented by echoes of hernial sac and contents in the inguinal region. Since hernial sac opening was connected to abdominal cavity,when the contents were intestine,the intestine walls,gas and the other contents produced ultrasound echoes. When the contents were the great omentum

  6. Color doppler ultrasound diagnosis of lower limb venous thrombosis and its risk factors analysis%彩色多普勒超声诊断下肢静脉血栓及其形成因素的分析

    Institute of Scientific and Technical Information of China (English)

    张涛

    2013-01-01

    Objective Retrospective study of color Doppler ultrasound image of the characteristics of lower limb venous thrombosis,evaluate the clinical diagnostic value,and to study the comformation for the purpose of clinical early diagnose and treatment.Methods Color Doppler ultrasound diagnoses were carried out on 32 patients with lower extremity venous thrombosis and the thrombus echo characteristics,scope of thrombus,venous wall,vascular diameter and blood flow were observed.Results In 32 cases,17 cases were diagnosed by color Doppler ultrasound of acute lower limb venous thrombosis,12 cases of subacute thrombosis,and 3 cases of chronic thrombosis.The ultrasonic imaging characteristics of every period has its specificity.Also,majority of the patients had traumatic fractures.Conclusion Color Doppler ultrasound is the top noninvasive method for venous thrombosis of lower limb,it can not only confirm the range and degree of lower extremity venous thrombosis,and to dynamically observe its ongoing at the same time.It has irreplaceable advantage over other imaging diagnose method in clinical diagnosis of lower limb venous thrombosis.%目的 探讨下肢静脉血栓彩色多普勒超声影像学的特点,评价其临床诊断价值,并对其形成因素进行分析,为临床早期发现下肢静脉血栓及早期治疗提供依据.方法 对32例下肢静脉血栓患者进行彩色多普勒超声检查,观察其血栓的回声特点、血栓范围、静脉管壁、血管内径及其血流情况.结果 32例患者中,彩色多普勒超声诊断急性下肢静脉血栓17例,亚急性血栓12例,慢性血栓3例,各期的超声影像学特点均有其特异性;同时在患者中以下肢外伤性骨折居多.结论 彩色多普勒超声检查是下肢静脉血栓无创检查的首选方法,它不仅可以对下肢静脉血栓程度及范围作出肯定的诊断,同时可以动态观察其演变情况,在临床诊断下肢静脉血栓中具有其他影像学不可替代的优势.

  7. 血管超声检查对颈动脉内膜剥脱诊断的应用价值%The clinical value of color Doppler in carotid endarterectomy

    Institute of Scientific and Technical Information of China (English)

    夏凯; 彭涛; 段云古; 陈清山

    2016-01-01

    目的:探讨血管超声在颈动脉内膜剥脱患者诊断中的应用价值。方法回顾性分析45例颈动脉内膜剥脱患者的资料和彩色多普勒超声、经颅多普勒超声检查结果,术前CDFI明确颈动脉狭窄程度、斑块性质,TCD评估侧枝循环代偿情况,TCD术中监测大脑中动脉血流指导是否转流、有无过度灌注,CDFI检查缝合后管腔通畅情况及有无内膜游离,术后CDFI随访了解管腔通畅情况及有无内膜增生再狭窄。结果45例患者术前超声均提示颈内动脉重度狭窄,低回声斑块17例,强回声斑块12例,不均质回声斑块16例,侧枝循环良好者31例,侧枝循环代偿不良术中需转流者14例,45例患者颈动脉内剥脱后,狭窄处颈动脉的内径恢复、颅内灌注较术前明显改善;术后随访疗效满意,管腔通畅,未见再狭窄情况发生。结论颈动脉内膜剥脱是治疗颈动脉狭窄安全有效的方法,血管超声能够为颈动脉内膜剥脱患者提供术前准确评估、术中安全监测、术后有效随访。%Objective To study the clinical value of color Doppler ultrasound in carotid endarterectomy ( CEA) .Methods Forty-five patients with CEA were examined and analyzed by TCD and CDFI.The position, range,character,diameter,stenosis rate were measured by CDFI and collateral flow by TCD before CEA.The intraop-erative CDFI was applied to confirm the flow and the flaps in carotid artery.TCD monitoring of middle cerebral blood flow in CEA to assess whether use shunt technique and cerebral hyper-perfusion.CDFI was applied to assess patency and intimal hyperplasia of carotid artery.Results Seventeen low echo plaques,twelve high echo plaques and sixteen hypoechogenicity echo plaques in forty-five patients with internal carotid stenosis were found by color Doppler ultra-sound.Blood flow volume increased significantly in the ispilateal internal carotid arteries and middle cerebral arteris after

  8. Study on the significance of color Doppler ultrasound in diagnosis of deep venous thrombosis%彩色多普勒超声诊断下肢深静脉血栓的应用价值研究

    Institute of Scientific and Technical Information of China (English)

    邱爽

    2013-01-01

    Objective To explore the significance of color Doppler ultrasound in diagnosis of deep venous thrombosis. Methods Ninety patients with deep vein thrombosis were examined by color Doppler ultrasound using GE LOGIQ E9 color Doppler ultrasonographic instrument for checking bilateral iliac vein, external iliac vein, femoral vein, popliteal vein, posterior tibial vein, anterior tibial vein and its branches, in order to observe the distribution of deep vein thrombosis and various thrombotic ultrasonographic characteristics. Results 1. Deep venous thrombosis had been found in 103 limbs of 90 patients including unilateral venous thrombosis in 77 cases, bilateral thrombosis in 13 cases, venous thrombosis located in left side of 74 (71. 84% ) limbs, and in right side of 29 (28. 16% ) limbs. Femoral vein thrombosis occupied highest proportion, and it reached 32.04% , followed by iliac vein and femoral vein reached 21.36% , the lowest percentage in iliac vein reached 4. 85%. 2. The ultrasound image of acute thrombosis manifested as uniform hypoechoic venous lumen occlusion or partial blockage of lumen with widened smooth wall. The ultrasound image in chronic thrombus manifested as irregular hyperechoic shape in occluded or partial occluded venous lumen, and the lumen became smaller with localized or diffuse thickening and rough inner wall. Conclusion Color Doppler ultrasound has high significance in diagnosis of deep venous thrombosis.%目的 探讨彩色多普勒超声诊断下肢深静脉血栓的应用价值.方法 90例下肢深静脉血栓患者均接受彩色多普勒超声检查,采用GE LOGIQ E9彩色多普勒超声诊断仪,依次检查双侧髂总静脉、髂外静脉、股静脉、胭静脉、胫后静脉、胫前静脉及其分支,观察下肢深静脉血栓分布情况及各种血栓声像图特征.结果 ①90例患者中,共显示103条患肢存在下肢深静脉血栓,其中单侧77例,双侧13例,左侧74条(71.84%),右侧29条(28.16%).股

  9. Color doppler ultrasound joint MRI in the diagnosis of small malignant breast tumors%彩超联合 MRI诊断小体积恶性乳腺叶状肿瘤的临床分析

    Institute of Scientific and Technical Information of China (English)

    郭亦爱

    2015-01-01

    Objective Studying the ultrasound and MRI performance of small volume malignant breast cancer, in order to improve the preoperative diagnostic rate of PTB.Methods Retrospectively analyse ultrasound and MRI imaging findings of 8 cases of small leafy malignant breast tumor which confirmed by surgery pathology. Results Diagnosis coincidence rate of color doppler ultrasound was about 25%, diagnosis coincidence rate of MRI was about 37%, diagnosis coincidence rate of color doppler ultrasound joint MRI was about 50%. Conclusions Small leafy malignant breast tumor has a certain characteristic in ultrasonography and MRI performance, combining use of them can improve the diagnostic accordance rate of PTB.%目的:探讨小体积恶性乳腺叶状肿瘤的超声和MRI表现,提高PTB的术前诊断率。方法回顾分析8例经手术病理确诊的小体积恶性乳腺叶状肿瘤的超声和MRI影像学表现。结果彩超诊断符合率约为25%,MRI诊断符合率约为37%,彩超联合MRI诊断符合率约为50%。结论小体积恶性乳腺叶状肿瘤在超声显像图和MRI上具有一定的特征性表现,两者联合诊断,可以提高PTB的诊断符合率。

  10. 彩色多普勒超声对下肢深静脉血栓的诊断价值%Diagnosis Value of Color Doppler Ultrasonography of Deep Venous Thrombosis of the Lower Limbs

    Institute of Scientific and Technical Information of China (English)

    陈淑臻

    2013-01-01

    Objective Discusses color doppler ultrasonography in the diagnosis of deep venous thrombosis of the lower limbs value. Methods Will our deep vein thrombosis of the lower limbs were in patients with the clinical data of 100 patients were retrospectively analyzed. Results 100 cases of lower limb deep vein thrombosis case detection of acute deep vein thrombosis of the lower limbs (45 cases) and detection chronic lower limb deep vein thrombosis in 55 cases. Conclusion Color doppler ultrasound help clinical to make the right diagnosis,deep vein thrombosis of the lower limbs can be used as the first choice for the method, it is worth clinical application.%  目的探讨彩色多普勒超声对下肢深静脉血栓的诊断价值。方法将我院收治的下肢深静脉血栓患者100例的临床资料进行回顾性分析。结果100例下肢深静脉血栓形成病例检出急性下肢深静脉血栓45例,检出慢性下肢深静脉血栓55例。结论彩色多普勒超声有助于临床做出正确诊断,可作为下肢深静脉血栓的首选检查方法,值得临床推广应用。

  11. 经直肠彩色多普勒超声对前列腺癌的诊断价值%Value of transrectal color Doppler ultrasound in diagnosis of prostatic carcinoma

    Institute of Scientific and Technical Information of China (English)

    易发现; 李永忠; 李响

    2012-01-01

    Objective To evaluate the clinical value of transrectal color Dopplei ultrasound in diagnosis of prostatic carcinoma. Methods Thiity-one patients with prostatic carcinoma were examined by transrectal color Dopplei ultrasound, and 31 patients with benign hyperplasia were involved as the control group. Then the shape, lesion size, internal echo oi prostate, membranes and whether metastasis in surrounding organs in two groups were observed. Blood flow distribution of prostate and interior and periphery of the lesions were observed with color Doppler flow imaging( CDFI) , the internal diameter, the peak velocity and resistance index of the art ray were measured. Results Prostatic carcinoma was associated with calcification with the form of cluster, weak echoes, increased blood flow, increased r