Which factor has no impact on frame rate?

Which factor has no impact on frame rate?

• A. Transmit focal zones
• B. Scanning depth
• C. Receiver gain
• D. Sector width

Answer: (C)

Frame rate reflects how quickly a complete image is produced, governed by data acquisition timing rather than signal amplification. Deeper imaging lengthens the round-trip time for echoes, wider sector widths increase the number of scan lines per frame, and using multiple transmit focal zones requires more pulses per line—each of these slows the frame rate. Receiver gain, by contrast, only changes the brightness of the signal after it’s received; it doesn’t alter timing or the amount of data collected. Hence, it does not affect frame rate.

Frame rate reflects how quickly a complete image is produced, governed by data acquisition timing rather than signal amplification. Deeper imaging lengthens the round-trip time for echoes, wider sector widths increase the number of scan lines per frame, and using multiple transmit focal zones requires more pulses per line—each of these slows the frame rate. Receiver gain, by contrast, only changes the brightness of the signal after it’s received; it doesn’t alter timing or the amount of data collected. Hence, it does not affect frame rate.