Table 2.

All diffusion parameters in the contrast-enhancing tumor or peritumoral edema between HGGs and SBMs.

Parameters	Contrast-enhancing tumor		p-value	Peritumoral edema		p-value
	HGGs (n = 17)	SBMs (n = 26)		HGGs (n = 17)	SBMs (n = 26)
DWI
ADC	1.168 ± 0.037	1.188 ± 0.052	0.951	1.430 ± 0.032	1.493 ± 0.021	0.095
DTI
AD	1.183 ± 0.058	1.368 ± 0.069	0.477	1.631 ± 0.066	1.841 ± 0.025	0.004**
RD	1.162 ± 0.054	1.182 ± 0.056	0.806	1.364 ± 0.056	1.523 ± 0.030	0.030*
MD	1.236 ± 0.054	1.256 ± 0.067	0.688	1.045 ± 0.059	1.638 ± 0.031	0.026*
FA	0.125 ± 0.015	0.104 ± 0.008	0.293	0.140 ± 0.007	0.133 ± 0.007	0.531
DKI
AK	0.620 ± 0.046	0.672 ± 0.044	0.386	0.453 ± 0.031	0.409 ± 0.010	0.338
RK	0.673 ± 0.042	0.708 ± 0.043	0.571	0.571 ± 0.028	0.520 ± 0.014	0.421
MK	0.647 ± 0.043	0.688 ± 0.044	0.599	0.506 ± 0.028	0.467 ± 0.012	0.496
ADk	1.565 ± 0.066	1.568 ± 0.083	0.734	1.857 ± 0.063	1.936 ± 0.086	0.101
RDk	1.313 ± 0.062	1.334 ± 0.065	0.821	1.536 ± 0.062	1.705 ± 0.032	0.044*
MDk	1.397 ± 0.062	1.411 ± 0.070	0.891	1.622 ± 0.063	1.822 ± 0.029	0.026*
FAk	0.183 ± 0.013	0.160 ± 0.007	0.089	0.192 ± 0.008	0.178 ± 0.006	0.164
MAP-MRI
NG	0.157 ± 0.013	0.169 ± 0.012	0.536	0.118 ± 0.008	0.106 ± 0.004	0.404
NGAx	0.132 ± 0.010	0.145 ± 0.009	0.347	0.101 ± 0.007	0.090 ± 0.003	0.421
NGRad	0.084 ± 0.008	0.094 ± 0.007	0.386	0.059 ± 0.005	0.052 ± 0.002	0.370
MSD	22.214 ± 0.957	22.267 ± 1.063	0.972	25.684 ± 0.966	28.710 ± 0.506	0.017*
QIV	62.694 ± 5.931	60.510 ± 8.418	0.353	110.440 ± 9.572	128.436 ± 7.234	0.136
RTOP	2.268 ± 0.318	2.547 ± 0.359	0.496	1.476 ± 0.202	1.149 ± 0.042	0.122
RTAP	3.565 ± 0.290	3.659 ± 0.313	0.710	2.784 ± 0.212	2.422 ± 0.064	0.164
RTPP	5.074 ± 0.193	5.188 ± 0.228	0.421	4.428 ± 0.132	4.183 ± 0.031	0.039*
NODDI
Vic	0.294 ± 0.034	0.343 ± 0.036	0.421	0.177 ± 0.023	0.151 ± 0.008	0.421
Viso	0.187 ± 0.022	0.239 ± 0.027	0.164	0.236 ± 0.019	0.343 ± 0.020	0.001**
ODI	0.456 ± 0.042	0.551 ± 0.039	0.111	0.246 ± 0.025	0.214 ± 0.015	0.155

All data are represented as mean ± standard deviation. ^* p < 0.05; ^** p < 0.01. FA, AK, RK, MK, FAk, NG, NG_Ax, NG_Rad, V_ic, V_iso, and ODI are dimensionless. The units of ADC, AD, RD, MD, AD_k, RD_k, and MD_k are 10{sp}−3{/sp} mm²/s; MSD (× 10⁻⁵ mm²), QIV (× 10⁻¹⁰ mm⁵), RTOP (× 10⁵ mm⁻³), RTAP (× 10³ mm⁻²), and RTPP (× 10¹ mm⁻¹).