Table 1. Kurtosis and conventional diffusion metric values in the solid region of the tumor and the contralateral NAWM.

Region	Number	MK	Ka	Kr	MD (10−3 mm2/sec)	FA	ADC (10−3 mm2/sec)
Solid region of the tumor
Overall	74	0.586 ± 0.140	0.569 ± 0.135	0.605 ± 0.147	1.466 ± 0.410	0.163 ± 0.054	1.228 ± 0.303
LGGs	34	0.484 ± 0.088	0.472 ± 0.078	0.500 ± 0.102	1.720 ± 0.412	0.154 ± 0.050	1.404 ± 0.293
HGGs	40	0.674 ± 0.113	0.651 ± 0.118	0.695 ± 0.118	1.251 ± 0.259	0.170 ± 0.057	1.078 ± 0.220
Grade I gliomas	3	0.427 ± 0.022	0.408 ± 0.047	0.447 ± 0.044	2.071 ± 0.790	0.156 ± 0.060	1.529 ± 0.486
Grade II gliomas	31	0.489 ± 0.091	0.478 ± 0.078	0.505 ± 0.105	1.686 ± 0.362	0.154 ± 0.051	1.392 ± 0.277
Grade III gliomas	19	0.610 ± 0.095	0.585 ± 0.106	0.632 ± 0.098	1.349 ± 0.282	0.177 ± 0.063	1.178 ± 0.245
Grade IV gliomas	21	0.732 ± 0.097	0.711 ± 0.096	0.751 ± 0.107	1.162 ± 0.203	0.163 ± 0.052	0.987 ± 0.148
Contralateral NAWM	74	1.033 ± 0.058	0.806 ± 0.049	1.327 ± 0.114	0.844 ± 0.035	0.418 ± 0.037	0.737 ± 0.045

Note: Data are presented as the mean and standard deviation. All metrics are dimensionless, except for MD and ADC.

MK: mean kurtosis; Ka: axial kurtosis; Kr: radial kurtosis; MD: mean diffusivity; FA: fractional anisotropy; ADC: apparent diffusion coefficient; HGGs: high-grade gliomas; LGGs: low-grade gliomas; NAWM: normal-appearing white matter.