In 3D sonography, what term describes a single 3D pixel element?

In 3D sonography, what term describes a single 3D pixel element?

• A. Volume point
• B. Voxel
• C. Quadrant
• D. Channel

Answer: (B)

In 3D ultrasound, a single tiny element of the volume is a voxel, the volume counterpart of a pixel. Each voxel represents a small cube of tissue in the reconstructed volume and stores the brightness or echo value for that location. The entire 3D image is built from a grid of voxels across the three dimensions, so voxel size directly influences spatial resolution. The other terms don’t describe a 3D image element: a quadrant refers to a 2D division, a channel is a data pathway, and “volume point” isn’t the standard term used to name a 3D image element.

In 3D ultrasound, a single tiny element of the volume is a voxel, the volume counterpart of a pixel. Each voxel represents a small cube of tissue in the reconstructed volume and stores the brightness or echo value for that location. The entire 3D image is built from a grid of voxels across the three dimensions, so voxel size directly influences spatial resolution. The other terms don’t describe a 3D image element: a quadrant refers to a 2D division, a channel is a data pathway, and “volume point” isn’t the standard term used to name a 3D image element.