نتایج جستجو برای: color doppler
تعداد نتایج: 161606 فیلتر نتایج به سال:
Objective To evaluate the role of a transrectal ultrasound (TRUS) guided biopsy and a color Doppler test in the detection of prostate cancer in patients with increased serum prostate-specific antigen (PSA) levels and/or an abnormal digital rectal examination (DRE). Method A total of 40 cases, ranging in age from 50 to 80 years and showing increased serum PSA levels (4-10 ng/ml) and/or abnormal ...
A 15-year-old boy presenting blood in stools for one month. Four days after the symptoms onset, the patient underwent rectosigmoidoscopy which revealed the presence of stale blood in the rectosigmoid junction. Serum hemoglobin level was 11 mg/dl. History of appendectomy three years before. At color Doppler US, a fixed cystic image with gut signature was observed in the right lower abdominal qua...
Mitral regurgitation (MR) is considered the most common valve disease with a prevalence of 2-3 % of significant regurgitation (moderate to severe and severe) in the general population. Accurate assessment of the severity of regurgitation was demonstrated to be of significant importance for patient management and prognosis and consequently has been widely recognized in recent guidelines. However...
The Society of Radiologists in Ultrasound convened a multidisciplinary panel of experts in the field of vascular ultrasonography (US) to come to a consensus regarding Doppler US for assistance in the diagnosis of carotid artery stenosis. The panel's consensus statement is believed to represent a reasonable position on the basis of analysis of available literature and panelists' experience. Key ...
Accurate assessment of gestational age, fetal growth, and the detection of fetal and placental abnormalities are major benefits of sonography. Color Doppler can be used to assist in the identification of vascular architecture, detection of vascular pathology and visualization of blood flow changes associated with physiologic processes and disease states. The clinical applications of obstetrical...
OBJECTIVE The purpose of this presentation is to review the techniques of performing an upper extremity Doppler examination, in addition to illustrating the sonographic appearances of acute and chronic upper extremity deep venous thrombosis (UEDVT). METHODS The risk factors and complications of UEDVT are discussed, and the anatomy of the upper extremity deep venous system as well as examinati...
UNLABELLED We analyzed a group of nine neonates diagnosed with adrenal gland hemorrhage in the years 2007-2011, to evaluate diagnostic methods. We assessed risk factors and factors predisposing to hemorrhage. Severe and moderate perinatal hypoxia was found in 5 cases, while sepsis in 4 cases. Three patients had bilateral adrenal hemorrhage. All patients underwent ultrasound examination and colo...
A26-year-old woman presented at 33 weeks of gestation with a singleton fetus with tachycardia. A complete fetal echocardiogram revealed a structurally normal fetal heart without signs of hydrops. The fetal heart rate was between 200 and 220 bpm. Evaluation of the rhythm with pulsed Doppler and M-mode scanning was not definitive. Fetal Doppler tissue imaging color M-mode scanning was performed b...
In the present study we aimed to develop a formula for predicting adnexal malignancy based on menopausal status, ultrasound morphology, and color Doppler findings. Logistic regression analysis was performed retrospectively in 79 adnexal masses (59 benign and 20 malignant) in 73 unselected and consecutive patients. All these masses had been preoperatively evaluated using transvaginal color Doppl...
BACKGROUND The ability to visualize subsurface blood vessels and measure flow may be useful in certain experimental and clinical settings. METHODS Color Doppler optical coherence tomography was used to visualize and measure blood flow in subsurface vessels in vivo in a rat skin flap model. Local "hemostatic" interventions (epinephrine or sclerosant injection, heat probe, and laser) were then ...
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