Which parameter is used to adjust depth-dependent brightness?

Which parameter is used to adjust depth-dependent brightness?

• A. Frequency
• B. Time Gain Compensation
• C. Frame averaging
• D. Echo arrival time

Answer: (B)

Depth-dependent brightness is managed by compensating for the loss of signal as sound travels deeper. Time Gain Compensation adjusts the gain as time (and thus depth) increases, letting the operator shape how bright deeper tissues appear relative to shallow ones. This targeted amplification keeps the image evenly bright by offsetting attenuation with depth. Frequency affects how deep and sharp the image is but doesn't tailor brightness across depths. Frame averaging reduces speckle by combining multiple frames, not depth-dependent brightness. Echo arrival time relates to calculating depth from the travel time of the echo, not to brightness control.

Depth-dependent brightness is managed by compensating for the loss of signal as sound travels deeper. Time Gain Compensation adjusts the gain as time (and thus depth) increases, letting the operator shape how bright deeper tissues appear relative to shallow ones. This targeted amplification keeps the image evenly bright by offsetting attenuation with depth.

Frequency affects how deep and sharp the image is but doesn't tailor brightness across depths. Frame averaging reduces speckle by combining multiple frames, not depth-dependent brightness. Echo arrival time relates to calculating depth from the travel time of the echo, not to brightness control.