Which settings will lead to the highest temporal resolution?

Which settings will lead to the highest temporal resolution?
A . 45-degree sector width, 4 cm scan depth, color Doppler off
B . 60-degree sector width, 5 cm scan depth, color Doppler off
C . 45-degree sector width, 4 cm scan depth, color Doppler on
D . 60-degree sector width, 5 cm scan depth, color Doppler on

Answer: A

Explanation:

The settings that lead to the highest temporal resolution are those that reduce the amount of information that the ultrasound system needs to process, allowing for a higher frame rate. A smaller sector width and shallower scan depth reduce the area that needs to be imaged, enabling faster data acquisition. Turning off color Doppler further reduces processing demands, as the system no longer needs to compute and display color flow information. Therefore, a 45-degree sector width, 4 cm scan depth, and color Doppler off will provide the highest temporal resolution.

Reference: ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau

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