Fig. 5.

T1w, T2w and T2*w intensity distributions of basal ganglia T2*w hypointensities. The bin-width optimized histograms estimate the distributions of T2*w, T2w and T1w intensities of basal ganglia T2*w hypointensities. The solid vertical lines indicate median and the dashed vertical lines the 25th- and 75th-percentiles. The vertical boxplots of the bottom figures indicate the ranges of normal-appearing intensities of the globus pallidus (G), the putamen (P) and caudate (C). The histograms suggest that the T2*w, T2w and T1w intensity distributions of basal ganglia T2*w hypointensities are unimodal but their shapes generally do not resemble normal distributions and potentially indicate an underlying inhomogeneous tissue structure.