SPI Exam Dumps | Which is a method to reduce noise?

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ARDMS.SPI.v2025-12-29.q99
Question 70

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Question 70/99

Which is a method to reduce noise?

A. Increase frequency

B. Decrease beam width

C. Decrease depth

D. Increase persistence

Correct Answer: D

Comprehensive and Detailed Explanation From Exact Extract:
Persistence averages multiple frames to smooth out random noise fluctuations, reducing the appearance of noise in the image and improving image quality.
According to sonography instrumentation reference:
"Persistence reduces noise by averaging data from consecutive frames, improving signal-to-noise ratio and producing a smoother image." Therefore, the correct answer is D: Increase persistence.
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