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The Doppler effect provides an ultrasonic method for the detection of echoes from moving structures, particularly flowing blood. In its most simple form, the continuous wave Doppler offers velocity information without depth resolution and is therefore used mainly for the examination of...
Recent improvements in duplex ultrasound technology now permit the application of duplex ultrasound to the assessment of arterial occlusive disease from the level of the aorta to the popliteal trifurcation. In our laboratory we have developed duplex waveform criteria for classifying peripheral...
During the past decade Doppler echocardiography has evolved to an extent that it has become a major noninvasive tool for cardiac evaluation in both acquired and congenital heart disease. This article describes current applications of Doppler techniques in the evaluation of cardiac anatomy and...
Duplex Doppler scanning has many applications in the evaluation of the liver and the portal venous system. It can be a useful adjunct to real‐time sonographic identification of normal and variant anatomy, and lesion detection in the liver and porta hepatis. It is able to document both portal...
Well‐established roles for Doppler ultrasound assessment of renal transplants include postoperative evaluation for vascular occlusion and detection of renal artery stenosis. Doppler studies can often differentiate rejecting transplants from those that normally function. While very high Doppler...
We present a review of ultrasonic Doppler methods (duplex scanning) used in the noninvasive assessment of renal artery stenosis and hemodynamics. The clinically successful applications of ultrasonic Doppler methods to the noninvasive assessment of the peripheral and cerebral vasculatures have...
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