Which control adjustment is most likely to affect the frame rate during a sonographic exam?

Which control adjustment is most likely to affect the frame rate during a sonographic exam?

• A. Scan Depth
• B. Time Gain Compensation
• C. Amplification
• D. Transmit Power

Answer: (A)

Frame rate is how many images are produced each second, and it hinges on how long it takes to acquire one frame. The pulse must travel to the deepest point in the image and back, so increasing imaging depth lengthens that travel time and reduces how many pulses per second you can send—lowering the frame rate. Conversely, shallower depth shortens the round trip, letting more pulses per second and raising the frame rate. The other adjustments change brightness or signal strength but don’t affect how long the frame takes to acquire, so they don’t impact the frame rate.

Frame rate is how many images are produced each second, and it hinges on how long it takes to acquire one frame. The pulse must travel to the deepest point in the image and back, so increasing imaging depth lengthens that travel time and reduces how many pulses per second you can send—lowering the frame rate. Conversely, shallower depth shortens the round trip, letting more pulses per second and raising the frame rate. The other adjustments change brightness or signal strength but don’t affect how long the frame takes to acquire, so they don’t impact the frame rate.