Table 3.

Comparison of different DTI metrics among various zones in high-grade groups.

	Tumor zone VS NAWM		Peritumoral edema zone VS NAWM		WM adjacent to edema VS NAWM
	T-value	P-value	T-value	P-value	T-value	P-value
AD	-2.193	0.036∗	8.239	0.000∗	-4.978	0.000∗
RD	6.889	0.000∗	15.895	0.000∗	5.212	0.000∗
Cp	-5.846	0.000∗	-6.609	0.000∗	-1.139	0.264
Cs	12.091	0.000∗	8.220	0.000∗	7.988	0.000∗
Cl	-12.892	0.000∗	-15.168	0.000∗	-7.142	0.000∗

^∗p < 0.05. AD, axial diffusivity; RD, radial diffusivity; Cp, planar tensor; Cs, spherical tensor; Cl, linear tensor; WM, white matter; NAWM, normal-appearing white matter.