Fig. 5.

Boxplots show parameter distributions across the high-grade and low-grade tumor groups, respectively. a, b Median uncorrected relative cerebral blood volume (rCBV_uncorr) and corrected relative cerebral blood volume (rCBV_corr) (a) and median K₂ (b). The bold lines show the mean parameter, whiskers show the interquartile range. The P-values from the Kruskal-Wallis tests for significant differences in parameters between the high-grade and low-grade tumor groups were significant at 0.008, 0.010 and 0.014 for rCBV_uncorr, rCBV_corr and K₂, respectively