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Axial T2-weighted image (a), post-contrast T1-weighted image (b) of a 51-year-old man with GBM in splenium of corpus callosum. Five to 7 ROIs (40–60 mm2, 2 examples shown) were manually selected on the corresponding slices of Ktrans (c), DWI (d) and ADC map (e) using Image J.
