FIG 2. Top, Sagittal image shows the placement of the 6 x 6 x 6-cm PRESS VOI, the four 1.5-cm-thick HSI slices, a–d, and the chiasmal glioma (arrow) in a 3-year-old boy.

a–d, Axial T2-weighted images (FOV = 22 cm) of the corresponding HSI slices, superimposed with the axial projection of the 6 x 6-cm VOIs. The FASI regions were marked with a solid black line by a neuroradiologist. The dotted circle in d indicates the location of the glioma.