Echocardiography Techniques II Exam 1 Practice

In color Doppler imaging, which color represents flow away from the transducer in the aortic valve study?

Blue Red Green Yellow

Correct Answer:

Blue

Explanation:

Color Doppler encodes flow direction relative to the transducer. Flow toward the transducer is typically shown as red, while flow moving away is shown as blue. In the aortic valve study, the jet that moves from the left ventricle through the valve into the aorta is directed away from a standard transducer position, so it appears blue on the color map. Turbulent or very high-velocity areas can appear green or yellow depending on the palette, but the direction cue for flow away from the transducer is blue.

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