What adjustment is needed to optimize the color in the image below?
A . Decrease gain
B . Increase wall filter
C . Decrease persistence
D . Increase pulse repetition frequency
Answer: D
Explanation:
Increasing the pulse repetition frequency (PRF) helps to optimize the color Doppler imaging by reducing aliasing.
Aliasing occurs when the PRF is too low to accurately sample the rapid blood flow velocities, leading to incorrect color representation.
By increasing the PRF, the system can more accurately measure higher velocities without distortion, improving the overall quality of the color Doppler image.
Reference: ARDMS Sonography Principles and Instrumentation guidelines on Doppler imaging and techniques to reduce aliasing.
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