Table 3.

Pearson's correlation coefficient, r, between ν _ic and OD for each FA strata in whole brain white and grey matter masks, for all subjects

	FA strata	1.5 T	3 T
White matter	0.0–0.2	r = −0.0935	r = −0.0857
	0.2–0.3	r = 0.2715	r = 0.2619
	0.3–0.4	r = 0.3554	r = 0.3426
	0.4–0.5	r = 0.4721	r = 0.4246
	0.5–0.6	r = 0.4808	r = 0.4818
	0.6–0.7	r = 0.5463	r = 0.4997
	0.7–1.0	r = 0.7308	r = 0.5124
Grey matter	0.0–0.1	r = 0.0564	r = −0.0562
	0.1–0.2	r = 0.1094	r = 0.0515
	0.2–0.3	r = 0.2624	r = 0.2776
	0.3–0.4	r = 0.4191	r = 0.4509
	0.4–0.6	r = 0.6638	r = 0.6580

All correlations were significant with P < 0.0001.