Ultrasonography, Doppler, Duplex
"Ultrasonography, Doppler, Duplex" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
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Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
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