Intermediate
Technical
In the Industry Vocabulary Test
voxel
Pronunciation: vock-sel
Three-dimensional pixel representing the smallest unit of brain tissue in neuroimaging data.
Full Definition
A voxel (volumetric pixel) is the fundamental three-dimensional unit used to represent brain tissue in neuroimaging datasets. Each voxel contains intensity values corresponding to specific tissue properties and occupies a defined spatial location within the brain volume. Voxel size significantly impacts image resolution and statistical power in neuroimaging analyses, with typical dimensions ranging from 1x1x1mm to 4x4x4mm depending on the imaging protocol.
Usage
Usage note: Always singular 'voxel', plural 'voxels' - never 'voxel' as plural.
In Context
- "The analysis identified significant activation in 347 voxels within the left superior temporal gyrus." — Statistical analysis report
- "High-resolution scans used 1mm isotropic voxels to improve anatomical detail." — Imaging protocol
Also known as
volumetric pixel
Don't confuse with
pixel