In B-mode, which axis represents Amplitude?

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Multiple Choice

In B-mode, which axis represents Amplitude?

Explanation:
In B-mode imaging, only two spatial dimensions are shown: one axis corresponds to lateral position along the scan line, and the other shows depth (axial distance into the body). The actual amplitude of the returning echo isn’t plotted along a separate axis. Instead, amplitude is conveyed by how bright each point appears on the image—the gray-scale brightness. A stronger echo makes a brighter pixel, a weaker echo makes a darker one. So amplitude isn’t tied to an axis at all; it’s encoded in brightness.

In B-mode imaging, only two spatial dimensions are shown: one axis corresponds to lateral position along the scan line, and the other shows depth (axial distance into the body). The actual amplitude of the returning echo isn’t plotted along a separate axis. Instead, amplitude is conveyed by how bright each point appears on the image—the gray-scale brightness. A stronger echo makes a brighter pixel, a weaker echo makes a darker one. So amplitude isn’t tied to an axis at all; it’s encoded in brightness.

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