White matter tracts of interest in RA (A) and T2WI (B) maps. Six white matter tracts were examined, including anterior commissure (AC), corpus callosum (CC), cerebral peduncle (CP), external capsule (EC), optic nerve (ON), and optic tract (OT). All white matter tracts exhibit bright in RA and dark in T2WI. The regions of interest of each white matter track were shown on the T2WI maps.