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How does a Doppler ultrasonography work?

In: Cardiovascular Health, Spectroscopy [Edit categories]

Answer:

The transducer sends the information it receives to a television monitor that shows a moving image of the organ being studied. The technician can save these images either on video tape, paper, or x-ray film for further study.

First answer by Gale Ency. of Medicine. Last edit by Gale Ency. of Medicine. Contributor trust: 36 [recommend contributor ]. Question popularity: 2 [recommend question].

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Relevant answers:

What is Doppler ultrasonography?
direct measurement of blood flow and rates of flow, sometimes performed in conjunction with stress testing (exercise between tests).
How does the Doppler Effect work?
The Doppler effect occurs whenever a source of sound or light moves, relative to the observer. It is an apparent shift in frequency or wavelength.
What are abnormal results of a Doppler ultrasonography?
Disrupted or obstructed blood flow through the neck arteries may indicate the person is a risk of having a stroke. (Narrowed arterial flow in the legs does not necessarily indicate a risk of stroke.)
What does Doppler Ultrasonography detect?
Doppler ultrasonography can detect the direction, velocity, and turbulence of blood flow. It is frequently used to detect problems with heart valves or to measure blood flow through the arteries.
What are normal results of a Doppler ultrasonography?
A Doppler ultrasonography test showing no restricted blood flow is a normal finding.