Which factor has a positive effect on temporal resolution?

Which factor has a positive effect on temporal resolution?
A . Increase in scan depth
B . Use of spatial compounding
C . Increase in number of focal zones
D . Use of narrow sector width

View Answer

Answer: D

Explanation:

Temporal resolution refers to the ability to accurately depict moving structures over time.

A narrow sector width reduces the area being scanned, which increases the frame rate because fewer scan lines are required per frame.

Higher frame rates improve temporal resolution, allowing for better visualization of fast-moving structures.

Other factors like scan depth and the number of focal zones also affect frame rate but typically reduce it when increased, thereby decreasing temporal resolution.

Reference: ARDMS Sonography Principles and Instrumentation guidelines on factors affecting temporal resolution and frame rate.