SPI Exam Dumps | Which resolution is improved by focusing?

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ARDMS.SPI.v2024-09-05.q44
Question 43

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Question 43/44

Which resolution is improved by focusing?

A. Lateral

B. Axial

C. Temporal

D. Contrast

Correct Answer: A

Focusing improves lateral resolution in ultrasound imaging. Lateral resolution refers to the system's ability to distinguish between two points that are side by side (perpendicular to the sound beam's path). By focusing the ultrasound beam, the width of the beam is narrowed at the focal point, enhancing the system's ability to resolve structures that are close together in the lateral plane. This results in clearer, more detailed images of the anatomical structures.
Reference:
American Registry for Diagnostic Medical Sonography (ARDMS) Sonography Principles and Instrumentation study materials.
Diagnostic Ultrasound: Principles and Instruments by Kremkau, F. W. (latest edition).

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