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Correlations between FA and mean diffusivity (MD) values and the duration of the illness. Axial slices. Clusters of voxels significantly different (p < 0.05) are shown in red for FA and in blue for MD in the WM. (A,B) Negative correlation between FA value and years of disease in right (p = 0.048) and left (p = 0.033) CB. (C,D) Positive correlation between MD value and years of disease in right CB (p = 0.005) and a trend in left CB (p = 0.057).
