The location and the size of each WM-tract on axial hT2w-3D-FLAIR images.

WM-tract: white matter tract, hT2w-3D-FLAIR: heavily T2-weighted three-dimensional fluid-attenuated inversion-recovery, P: plain (i.e., without gadolinium injection), DE: delayed enhancement (4 hours after intravenous gadolinium injection), SD: standard deviation, CST: corticospinal tract, ML: medial lemniscus, SCP: superior cerebellar peduncle. aThe location of each WM-tract was calculated as follows: CST, lateral distance from the lateral margin of the third ventricle at the thalamic level; ML, anterior distance from the anterior margin of the fourth ventricle at the trigeminal nerve level; and SCP, lateral distance from the lateral margin of the fourth ventricle at the trigeminal nerve level. bThe size of each WM-tract was calculated by surrounding the margin of high intensity area: CST, at the thalamic level; ML and SCP, at the trigeminal nerve level. cSCP was just lateral to the fourth ventricle at the trigeminal nerve level in all patients.