SPI Exam Dumps | What reduces speckle and increases visualization of specular reflectors and attenuated structures?

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ARDMS.SPI.v2025-12-29.q99
Question 77

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Question 77/99

What reduces speckle and increases visualization of specular reflectors and attenuated structures?

A. Elastography

B. Extended field of view

C. Pixel interpolation

D. Spatial compounding

Correct Answer: D

Comprehensive and Detailed Explanation From Exact Extract:
Speckle is a form of acoustic noise caused by interference of scattered echoes. Spatial compounding acquires multiple images from different angles and combines them to reduce speckle, enhance tissue texture, and improve visualization of structures that may otherwise be obscured by attenuation or artifact. The Principles and Instrumentation documentation states:
"Spatial compounding averages frames obtained at varying insonation angles. This reduces speckle artifact, smooths tissue texture, and improves visibility of specular reflectors and deeper structures." Therefore, the correct answer is D: Spatial compounding.
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