-In order to better understand the relationship abnormalities, a systematic study of a11 factors that may affect between the power of the Doppler spectrum and blood flow the Doppler power is required. In this study, three important factors were investigated in pifro using a mock flow loop: a) the pulsation rate of the flow, b) the hematocrit of blood and c) the vessel wall compliance. The resul...

AIM To investigate the potential usefulness of contrast-enhanced three-dimensional (3D) power Doppler sonography in the differentiation of benign and malignant adnexal lesions. METHODS Thirty one patients with complex adnexal lesions of uncertain malignancy at transvaginal B-mode and/or color Doppler sonography were prospectively evaluated with three-dimensional power Doppler sonography befor...

OBJECTIVE To compare the accuracy and feasibility of harmonic power Doppler and digitally subtracted colour coded grey scale imaging for the assessment of perfusion defect severity by single photon emission computed tomography (SPECT) in an unselected group of patients. DESIGN Cohort study. SETTING Regional cardiothoracic unit. PATIENTS 49 patients (mean (SD) age 61 (11) years; 27 women, ...

OBJECTIVE To determine the clinical utility and limitations of guided prostate biopsy Power Doppler in patients with elevated serum PSA levels. MATERIALS AND METHOD Prospective study. From April 2012 to May 2013, 111 men over 45 years of age with serum PSA level greater than 4.0ng/dl who underwent a transrectal prostate biopsy were included. The hypoechoic nodules in the peripheral region wer...

The accuracy of standard methods in estimating bulky lesions requires validation. We used clinical/computed tomography (CT) evaluation and power Doppler ultrasound (US) to detect bulky disease in 137 consecutive Hodgkin's lymphoma patients, and analyzed the prognostic relevance of each method. Bulky disease was detected by clinical/CT evaluation in 47% of the patients and by power Doppler US in...

PURPOSE The purpose of this preliminary study was to evaluate the usefulness of power Doppler sonography in differentiating metastatic from nonmetastatic cervical lymph nodes in patients with cancer. METHODS Histologically proved metastatic (n = 71) and nonmetastatic (n = 220) lymph nodes were examined with power Doppler sonography in 77 patients with head and neck cancer. Power Doppler sonog...

The aim of this work was to show contribution of power Doppler imaging in the diagnosis of the carotid body tumors. Six patients with a nontender mass beneath the mandibular angle were evaluated with gray scale and power Doppler sonography. Well-defined, solid, weakly hyperechoic masses were noted on gray scale sonography in the carotid bifurcation. Power Doppler sonography showed abundant flow...

Doppler sonographic criteria for assessing peripheral lymph nodes ! Introduction B-mode criteria provide the foundation for the sonographic identification of peripheral lymph nodes as normal or pathological and for differential diagnosis. “Sonography of Peripheral Lymph Nodes Part 1: Normal Findings and B-Image Criteria” therefore provides a comprehensive description of the sonographic appearan...

The use of Doppler ultrasound in rheumatology has grown in recent years. This is partly due to the increasing number of rheumatologists who perform US in their daily clinical practise and also to the technological advances of US systems. Both colour Doppler and power Doppler are used to evaluate the degree of intra- and peri-articular soft tissue inflammation. Moreover, Doppler US has been foun...

Sonoelastography is the visualisation of elastic properties using ultrasound. It can enable tumours to be detected and localised based on their elasticity when they are less elastic than the surrounding soft tissue. In vibration sonoelastography the target tissues are vibrated while simultaneously recording ultrasound images. A technique for imaging relative elastic properties is proposed that ...