What information is present in the M-mode display?

What information is present in the M-mode display?

• A. Amplitude, frequency, and time
• B. Time, motion pattern, and amplitude
• C. Motion pattern, and frequency
• D. Time, motion pattern, and frequency

Answer: (B)

In M-mode, you’re looking at how structures move over time along a single scan line. The horizontal axis represents time, so you can follow motion as it unfolds. The vertical axis shows depth, indicating where echoes come from along that line. The traces you see illustrate the motion pattern of tissues—how walls or interfaces move during the cardiac cycle. The brightness or intensity of the echoes conveys their amplitude, giving you a sense of how strong each reflection is. So the display provides time, the motion pattern, and the amplitude of the echoes.

In M-mode, you’re looking at how structures move over time along a single scan line. The horizontal axis represents time, so you can follow motion as it unfolds. The vertical axis shows depth, indicating where echoes come from along that line. The traces you see illustrate the motion pattern of tissues—how walls or interfaces move during the cardiac cycle. The brightness or intensity of the echoes conveys their amplitude, giving you a sense of how strong each reflection is. So the display provides time, the motion pattern, and the amplitude of the echoes.