SPI Exam Dumps | Which artifact occurs when there is increased amplification of reflectors distal to a low-attenuating

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ARDMS.SPI.v2025-12-29.q99
Question 92

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Question 92/99

Which artifact occurs when there is increased amplification of reflectors distal to a low-attenuating structure?

A. Mirror image

B. Enhancement

C. Reverberation

D. Refraction

Correct Answer: B

Comprehensive and Detailed Explanation From Exact Extract:
When the ultrasound beam travels through a structure that attenuates less than surrounding tissues, more energy reaches structures located deeper. This results in stronger echo signals from those deeper structures, which is visualized as a brightening or enhancement distal to the structure. This is referred to as acoustic enhancement or posterior enhancement.
Official sonography instrumentation reference states:
"Enhancement occurs as a result of reduced attenuation of the sound beam as it passes through fluid-filled or weakly attenuating structures, causing reflectors distal to the structure to appear more echogenic than normal." Therefore, the correct answer is B: Enhancement.

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