منابع مشابه
Ultrasonic colour Doppler imaging.
Ultrasonic colour Doppler is an imaging technique that combines anatomical information derived using ultrasonic pulse-echo techniques with velocity information derived using ultrasonic Doppler techniques to generate colour-coded maps of tissue velocity superimposed on grey-scale images of tissue anatomy. The most common use of the technique is to image the movement of blood through the heart, a...
متن کاملThe difference between Colour Doppler Velocity Imaging and Power Doppler Imaging.
The Doppler effect, which occurs on the reflection of ultrasound from moving blood or tissue, is observed as a shift in frequency of the reflected ultrasound from that of the incident ultrasound. This Doppler shift has been widely used in clinical practice as a means of measuring blood velocity. Two types of Doppler Imaging are often discussed as facilities on ultrasonic scanners, namely Colour...
متن کاملColour Doppler imaging in the demonstration of an orbital varix.
Colour Doppler imaging (CDI) is a recent development in ultrasonography. It allows simultaneous two-dimensional structural imaging and Doppler evaluation of blood flow. Quantitative information on flow velocity is obtained by pulsed Doppler spectral analysis, the colour information being used to choose the vessel of interest. Using this technique the authors examined a patient with an orbital v...
متن کاملUltrasound imaging for the rheumatologist. XVII. Role of colour Doppler and power Doppler.
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...
متن کاملInfluence of colour Doppler echocardiography on the ultrasonic assessment of congenital heart disease: a prospective study.
OBJECTIVE To evaluate the additional information provided by colour Doppler in the ultrasonic assessment of congenital heart disease. PATIENTS AND METHODS A prospective study of 215 children (age range 1 day-16 years) presenting with clinical signs of congenital heart disease. RESULTS Colour Doppler was essential for the diagnosis of an anomalous left coronary artery and altered the managem...
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ژورنال
عنوان ژورنال: Interface Focus
سال: 2011
ISSN: 2042-8898,2042-8901
DOI: 10.1098/rsfs.2011.0017