In M-mode, the z-axis represents what?

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Multiple Choice

In M-mode, the z-axis represents what?

Explanation:
In M-mode, motion is plotted along a single ultrasound line over time. The display uses two axes: time on the horizontal axis and depth (distance from the transducer along the beam) on the vertical axis. There isn’t a third dimension mapped to an axis in this mode, and echo strength is shown by brightness along the trace rather than a z-axis value. So the z-axis is not used in standard M-mode; there is no z-axis to interpret. The horizontal axis is time, the vertical axis is depth, and amplitude is represented by brightness.

In M-mode, motion is plotted along a single ultrasound line over time. The display uses two axes: time on the horizontal axis and depth (distance from the transducer along the beam) on the vertical axis. There isn’t a third dimension mapped to an axis in this mode, and echo strength is shown by brightness along the trace rather than a z-axis value. So the z-axis is not used in standard M-mode; there is no z-axis to interpret. The horizontal axis is time, the vertical axis is depth, and amplitude is represented by brightness.

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