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Significant (RFT p-value < 0.05) GM volume decrease is shown for behavioural variants (BV) vs. normal elderly control (CN) (a), progressive non-fluent aphasia (PNFA) vs. CN (b) and semantic variant (SV) vs. CN (c). Legend are showing the magnitude of the voxelwise T values. An overlay of the statistical maps (d) is shown for BV (green), SV (blue), and PNFA (red), with associated T values colour bars.
