In B-mode imaging, which echo amplitude would produce the brightest dot?

In B-mode imaging, which echo amplitude would produce the brightest dot?

• A. Very High Amplitude
• B. Moderate Amplitude
• C. Very Low Amplitude
• D. Low Amplitude

Answer: (A)

Brightness in B-mode imaging is determined by the strength of the reflected ultrasound signal. The display maps echo amplitude to pixel brightness, so stronger echoes appear as brighter dots while weaker echoes look dimmer. Therefore, the echo with very high amplitude would produce the brightest dot, compared with moderate or low amplitudes that yield progressively dimmer spots. High-contrast interfaces with strong reflections—like interfaces with large impedance differences—tend to produce the brightest echoes.

Brightness in B-mode imaging is determined by the strength of the reflected ultrasound signal. The display maps echo amplitude to pixel brightness, so stronger echoes appear as brighter dots while weaker echoes look dimmer. Therefore, the echo with very high amplitude would produce the brightest dot, compared with moderate or low amplitudes that yield progressively dimmer spots. High-contrast interfaces with strong reflections—like interfaces with large impedance differences—tend to produce the brightest echoes.