A comparison of image histograms from the datasets in Figure 3. The gray lines mark the minimum (black = 3%) and maximum (red = 96%) for the color palette used in Figure 3. The shapes of the T1w/T2w histograms are very similar, but their absolute magnitudes differ markedly. The values for the NAMIC-10 group are twice as high as those for the Conte-69 group, reflecting the fact that the data were collected on different scanners using different pulse sequences (see Materials and Methods). The top row is the left hemisphere and the bottom row is the right hemisphere.