Which adjustment is most appropriate when the ultrasound image displays only strong reflectors with little background detail?

• A. Increase output power
• B. Adjust the far gain
• C. Increase lateral resolution
• D. Adjust the TGC

Answer: (A)

When echoes from the tissue are dominated by a few very bright interfaces and the rest of the image looks dark, the main issue is insufficient signal strength across the scene. Increasing the transmitted power raises the amplitude of all echoes, not just the strongest ones, which improves the visibility of weaker background details and enhances overall image brightness and contrast. This helps reveal tissue structures that were previously too faint to detect and can improve penetration into deeper tissues.

Be mindful that higher output power increases patient exposure, so adjust gradually and monitor safety indices.

The other adjustments are less direct for this situation: changing far gain affects only deeper echoes and may not address the general weak background; altering the time-gain compensation changes depth-dependent brightness but won’t necessarily raise the overall signal level enough to reveal subtle structures; and improving lateral resolution changes sharpness, not the brightness or visibility of faint echoes.