SPI Exam Dumps | Which adjustment resolves spectral Doppler aliasing?

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Question 75/99

Which adjustment resolves spectral Doppler aliasing?

A. Increase time gain compensation

B. Increase sweep speed

C. Decrease transducer frequency

D. Decrease velocity scale

Correct Answer: C

Comprehensive and Detailed Explanation From Exact Extract:
Reducing transducer frequency lowers the Doppler shift for a given velocity (since Doppler shift is directly proportional to frequency), which helps avoid aliasing when high velocities are present.
According to sonography instrumentation reference:
"Lowering the transducer frequency decreases Doppler shift, reducing the likelihood of aliasing." Therefore, the correct answer is C: Decrease transducer frequency.

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