TGC is also called?

TGC is also called?

• A. Master gain
• B. Depth gain compensation
• C. System shielding
• D. Frame averaging

Answer: (B)

Time Gain Compensation is used to correct for the fact that deeper tissues attenuate ultrasound more than shallow tissues. By increasing the gain as depth increases, echoes from deeper structures are amplified more, keeping image brightness more uniform across the image. It’s often called depth gain compensation because the adjustment targets depth (how far the sound has traveled), even though the underlying mechanism is a time-based gain curve. Other controls serve different roles: master gain changes overall brightness for the entire image, shielding isn’t about image brightness, and frame averaging helps reduce noise rather than compensate for depth.

Time Gain Compensation is used to correct for the fact that deeper tissues attenuate ultrasound more than shallow tissues. By increasing the gain as depth increases, echoes from deeper structures are amplified more, keeping image brightness more uniform across the image. It’s often called depth gain compensation because the adjustment targets depth (how far the sound has traveled), even though the underlying mechanism is a time-based gain curve. Other controls serve different roles: master gain changes overall brightness for the entire image, shielding isn’t about image brightness, and frame averaging helps reduce noise rather than compensate for depth.