If the attenuation coefficient of tissue is very high, which control should you adjust to modify the image?

If the attenuation coefficient of tissue is very high, which control should you adjust to modify the image?

• A. Dynamic range
• B. Rejection
• C. Compensation
• D. Compression

Answer: (C)

Attenuation grows with depth, so deeper tissues weaken more and appear dimmer. The compensation control, also known as time-gain compensation (TGC) or depth gain, adjusts amplification as a function of depth to offset this loss. By boosting signals coming from deeper levels, you can maintain consistent brightness and reveal deeper structures. Dynamic range changes overall image contrast, not depth-based brightness. Rejection suppresses noise, and compression maps signal amplitudes to display brightness but doesn’t specifically address depth attenuation. So the best control to modify image when attenuation is very high is compensation.

Attenuation grows with depth, so deeper tissues weaken more and appear dimmer. The compensation control, also known as time-gain compensation (TGC) or depth gain, adjusts amplification as a function of depth to offset this loss. By boosting signals coming from deeper levels, you can maintain consistent brightness and reveal deeper structures.

Dynamic range changes overall image contrast, not depth-based brightness. Rejection suppresses noise, and compression maps signal amplitudes to display brightness but doesn’t specifically address depth attenuation. So the best control to modify image when attenuation is very high is compensation.