SPI Exam Dumps | What information does the ultrasound system calculate to display color flow?

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Question 3/99

What information does the ultrasound system calculate to display color flow?

A. Peak Doppler frequency

B. Mean Doppler frequency

C. Peak velocity of flow

D. Minimum velocity of flow

Correct Answer: B

Color flow Doppler imaging displays the mean Doppler frequency shift, which represents the average velocity of blood flow within a sample volume. The ultrasound system uses autocorrelation to process Doppler signals and compute the mean frequency shift. This provides a color-coded map of blood flow velocities, allowing for visualization of flow direction and speed. The mean Doppler frequency is displayed as different colors, with each color representing a range of velocities.
References:
ARDMS Sonography Principles & Instrumentation Guidelines
Kremkau FW. Sonography Principles and Instruments. 9th ed. Philadelphia, PA: Elsevier; 2016.

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