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A–C, Oligoastrocytoma, grade 2, centered on the pre-central gyrus of the right frontal lobe, seen on axial T2-weighted, T1-weighted postgadolinium, and DSC CBV. D–F, IVIM parametric maps f, D*, and fD* (scale bars: f = unitless; D*, fD* = mm2s−1). G, Logarithmic plot of signal-intensity decay as a function of b of the region of interest of the maximal perfusion fraction, with the corresponding biexponential fit.
