In MRI technologies, we use the term voxel to refer to
A) the rate at which atoms spin.
B) the strength of the magnets being used.
C) a small area of tissue to be assigned a pixel of appropriate color or darkness.
D) a gamma ray released during the breakdown of a radioactive tracer.

Question

Quizplus · Accepted Answer

Voxel stands for "volume element," which refers to a small three-dimensional cube-shaped area of tissue that is assigned a pixel of appropriate color or darkness in an MRI image. Each voxel represents a small volume of tissue, and the collection of all voxels together creates the three-dimensional image. The size of each voxel can vary, but typically they are in the range of a few millimeters cubed. The other options, such as the rate of atoms spinning or the strength of magnets, are important factors in MRI technology, but they do not directly relate to the definition of a voxel. Gamma rays are not typically used in traditional MRI imaging, so option D is also not correct.

In MRI Technologies, We Use the Term Voxel to Refer