Table 4.

The inter-observer reliability of the parameters in the tumor area

		ADC	Dslow	Dfast	f	DDC	α
Grade II (n = 19)	Observation 1	1.06 ± 0.25	0.75 ± 0.16	2.39 ± 0.35	0.74 ± 0.14	1.66 ± 0.53	0.92 ± 0.07
	Observation 2	1.05 ± 0.26	0.75 ± 0.16	2.38 ± 0.31	0.72 ± 0.14	1.65 ± 0.56	0.91 ± 0.07
	ICC	0.993	0.998	0.969	0.972	0.994	0.974
	p value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
Grade III (n = 12)	Observation 1	0.82 ± 0.13	0.57 ± 0.10	2.70 ± 0.44	0.58 ± 0.13	1.10 ± 0.14	0.82 ± 0.05
	Observation 2	0.80 ± 0.12	0.57 ± 0.10	2.73 ± 0.44	0.58 ± 0.13	1.06 ± 0.11	0.83 ± 0.05
	ICC	0.990	0.989	0.987	0.994	0.886	0.986
	p value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
Grade IV (n = 19)	Observation 1	0.69 ± 0.15	0.46 ± 0.07	3.11 ± 0.42	0.45 ± 0.10	0.86 ± 0.14	0.76 ± 0.04
	Observation 2	0.66 ± 0.15	0.46 ± 0.07	3.10 ± 0.42	0.45 ± 0.10	0.89 ± 0.16	0.77 ± 0.05
	ICC	0.972	0.991	0.970	0.989	0.799	0.983
	p value	< 0.001	< 0.001	< 0.001	< 0.001	0.001	< 0.001

ADC (× 10^-3 mm²/s), Dslow (× 10^-3 mm²/s), Dfast (× 10^-3 mm²/s), f (unitless), DDC (× 10^-3 mm²/s), α (unitless), ICC = Intra-class Correlation Coefficient.