Figure 5
QSM atlas and susceptibility variance. QSM atlas was obtained non-linearly registering 30 HC exams to the MNI152 space; the variance of susceptibility measurements was evaluated on a voxel-by-voxel fashion—(a) susceptibility variance map in the 3D MNI152 in the white matter tracts; (b) QSM atlas in MNI152; (c) susceptibility variance map overlaid on QSM atlas; (d) susceptibility variance map reported individually for each WM tract, overlaid on QSM atlas, with the most representative projection for each of them (sagittal for AF, IFOF, and UF; coronal for CST and FAT; axial for OR). Red arrows in (b) and (d) indicate streaking artifacts on QSM reconstructions (QSM = quantitative susceptibility mapping, HC = healthy controls, MNI152 = Montreal Neurological Institute’s 152 space, WM = white matter, AF = arcuate fasciculus, CST = cortico-spinal tract, FAT = frontal aslant tract, IFOF = inferior fronto-occipital fasciculus, OR = optic radiation, UF = uncinate fasciculus).
