Neuroimaging Data Processing/Glossary

BOLD
blood-oxygen-level-dependent

EPI
(gradient-echo) echoplanar imaging

fMRI
functional magnetic resonance imaging

MRI
magnetic resonance imaging

rotation
turning the entire image around an axis in space: x-y, x-z, y-z (in the absence of translation)

TE
echo time

TR
repetition time

translation
moving the entire image volume along an axis in space: x-,y-, and z-axes (in the absence of rotation)

volume
one 3-dimensional image, i.e., one timepoint in a 4-dimensional fMRI image

voxel
one 3-dimensional unit (length × width × height) in a 3-dimensional image (analogous to a pixel in a 2-dimensional image)