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Fig. 2A. —Color-coded anisotropy maps show placement of regions of interest (ROIs) in 27-month-old boy (group 2) in whom no brain abnormalities were detected on clinical MR imaging. Highest anisotropy values are depicted in red and yellow. Note the increase in anisotropy in these color-coded maps (i.e., increase in size of red and yellow regions) compared with images shown in Figure 1A,1B,1C. ROIs placed in corona radiata have mean anisotropy measurement of 0.414 in this structure.