OBJECTIVE To assess the validity of colour doppler sonography in the evaluation of portal venous system in hepatocellular carcinoma. METHODS The study was conducted at the Department of Diagnostic and Interventional Radiology at Shifa International Hospital, Islamabad, from March to November 2009, and comprised 100 patients who were already diagnosed cases of hepatocellular carcinoma or those...

BACKGROUND To determine the effect of vasovagally mediated syncope on the cerebral circulation, transcranial Doppler sonography was used to assess changes in cerebral blood flow velocity during head-upright tilt-induced syncope. METHODS AND RESULTS Thirty patients (17 men and 13 women; mean age, 43 +/- 22 years) with recurrent unexplained syncope were evaluated by use of an upright tilt-table...

OBJECTIVE To assess the role of grayscale and power Doppler sonography in short-term monitoring of acute gouty synovitis. METHODS Clinical and sonographic assessments were performed in a patient with gout. Clinical and sonographic evaluations were performed within the first day of the acute onset of synovitis of the first metatarsophalangeal joint of the left foot and 7 and 14 days after the ...

The value of duplex Doppler sonography as a noninvasive technique for evaluating the carotid neck vessels has been well documented [1-4]. The sensitivity and specificity of duplex Doppler sonography in the detection of high-grade stenosis (greater than 80%) approximates 90% [1] . However, duplex Doppler sonography has several limitations. Plaque ulceration cannot be detected reliably, even with...

Nuclear medicine methods have important role in the evaluation of transplanted kidney. In this study 58 99mTc-DTPA scans were performed in 38 patients. This method has 90% sensitivity and 96% specificity. In the cases of normal transplanted kidneys, function correlation between doppler sonography and scanning was more than dysfunctioning kidneys.

Abstract This second part on Doppler sonography in prenatal medicine and obstetrics reviews its clinical applications. While this has not become the initially anticipated screening tool, it is used for diagnosis surveillance of a variety fetal pathologies. For example, sonography-based determination uterine artery blood flow indices an important parameter first trimester multimodal preeclampsia...

rely on indirect evidence of nodal metastases. These include nodal enlargement, three or more borderline–sized nodes in a primary drainage pathway, and a nodal morphology showing a change from an elliptical to a spherical shape. The development of accurate radiologic criteria is important since 25% or more of patients presenting with head and neck cancer and no clinically palpable neck disease ...

this is retrospective double-blind research, which was carried out in imam khomeini hospital in order to study the accuracy of color doppler ultrasonography for detecting the site and grade of stenosis in cervical carotid artery. 40 patients with mean age of 62 years studied with color doppler before dsa angiography. the most common sites of stenosis were left internal carotid (39.5%) and right...