Which term describes spatial resolution that is equal in all dimensions?

Which term describes spatial resolution that is equal in all dimensions?

• A. Isotropic resolution
• B. Anisotropic resolution
• C. Isotropic imaging
• D. Uniform resolution

Answer: (A)

Isotropic resolution describes spatial sampling that is the same in all three dimensions. That means the voxel size is identical along x, y, and z, so features are captured with equal detail no matter which direction you sample. This uniformity is what lets 3D reconstructions and measurements be accurate and undistorted when viewed in different planes or rotated. Anisotropic resolution, in contrast, has different sampling densities along different directions, which can blur or elongate structures along the lower-resolution axis and degrade 3D accuracy. While isotropic imaging is related, the precise descriptor for the equal-in-all-directions property is isotropic resolution. Uniform resolution isn’t the standard technical term for this concept.

Isotropic resolution describes spatial sampling that is the same in all three dimensions. That means the voxel size is identical along x, y, and z, so features are captured with equal detail no matter which direction you sample. This uniformity is what lets 3D reconstructions and measurements be accurate and undistorted when viewed in different planes or rotated.

Anisotropic resolution, in contrast, has different sampling densities along different directions, which can blur or elongate structures along the lower-resolution axis and degrade 3D accuracy. While isotropic imaging is related, the precise descriptor for the equal-in-all-directions property is isotropic resolution. Uniform resolution isn’t the standard technical term for this concept.