duplex Doppler scan

du·plex Dopp·ler scan

a method of visualizing and selectively assessing the flow patterns of peripheral arteries and veins using ultrasound imaging and pulsed Doppler.
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References in periodicals archive ?
A duplex Doppler scan of the lower limb and IVC failed to reveal the suspected venous occlusion.
A thorough search for emboli may include a contrast-enhanced computed tomography scan, echocardiography, a duplex Doppler scan, phlebography and angiography; recently angioscopy has been suggested.