Final answer:
In an echocardiogram utilizing M-mode, the display shows amplitude, motion, and time, which helps clinicians assess the heart's structures and function over the cardiac cycle.
Step-by-step explanation:
When M-mode is employed during an echocardiogram, the information depicted on the display includes amplitude, motion, and time. M-mode, or motion mode, is a single-dimensional form of ultrasound that provides a time-motion display of the beating heart. Unlike other modes that may include depth or frequency information, M-mode specifically allows clinicians to measure and evaluate the motion of the heart structures over a period of time.
Echocardiograms are sophisticated and can provide a wealth of information about the heart's structure and function. An M-mode echocardiogram helps in examining the size and movement of the heart's compartments, like the chambers and wall thickness, as they move through the cardiac cycle, which yields critical diagnostic information.