In ultrasound imaging, what does TGC stand for?

In ultrasound imaging, TGC stands for Time Gain Compensation. This is a key concept used to improve image quality by compensating for the attenuation of sound waves as they travel through different tissues in the body. Since sound waves lose energy and may be weakened or scattered when they penetrate deeper into the body, TGC allows the sonographer to adjust the gain at specific depths during an examination.

By utilizing TGC, the gain can be increased for deeper structures while maintaining appropriate gain levels for more superficial tissues. This adjustment results in a more uniform image, ensuring that both superficial and deep structures are represented with clarity and detail. It allows for enhanced visualization of anatomy and pathology, leading to better diagnostic outcomes.

The other terms provided in the options might refer to concepts related to gain control, but they do not accurately define TGC as used in the context of ultrasound.