In sector-based ultrasound imaging, how does increasing sector width affect frame rate?

Prepare for the Ultrasound Physics Test. Access flashcards and multiple-choice questions, each with hints and explanations. Get set for your exam day!

Multiple Choice

In sector-based ultrasound imaging, how does increasing sector width affect frame rate?

Explanation:
Increasing sector width means the image covers a broader angular range, so more scan lines are needed to fill that frame. Frame rate is determined by how quickly a frame can be acquired, and adding more lines lengthens the time to complete one frame. So widening the sector lowers the frame rate. Depth penetration isn’t directly set by sector width; it depends on transmit settings and the time window for receiving echoes, so widening the sector doesn’t increase how deep you can image.

Increasing sector width means the image covers a broader angular range, so more scan lines are needed to fill that frame. Frame rate is determined by how quickly a frame can be acquired, and adding more lines lengthens the time to complete one frame. So widening the sector lowers the frame rate. Depth penetration isn’t directly set by sector width; it depends on transmit settings and the time window for receiving echoes, so widening the sector doesn’t increase how deep you can image.

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