SPI Exam Dumps | Which factor determines elevational resolution?

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ARDMS.SPI.v2025-12-29.q99
Question 96

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Question 96/99

Which factor determines elevational resolution?

A. Beam depth

B. Beam thickness

C. Beam uniformity ratio

D. Beam width

Correct Answer: B

Comprehensive and Detailed Explanation From Exact Extract:
Elevational resolution (slice thickness resolution) refers to the ability to resolve structures perpendicular to the imaging plane and is directly determined by the beam's thickness in that plane.
Principles and Instrumentation state:
"Elevational resolution is governed by the slice thickness, which depends on the transducer's beam profile and focusing in the elevational dimension."
* Beam depth (A) affects penetration.
* Beam uniformity ratio (C) is not related.
* Beam width (D) affects lateral resolution.
Therefore, the correct answer is B: Beam thickness.
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