Table 3.

ROC analysis results

Parameter	AUC	Sensitivity	Specificity	PPV	NPV	Accuracy	Cut-off value
D	0.808	0.78	0.76	0.41	0.94	0.76	0.85
K	0.767	0.75	0.68	0.31	0.93	0.69	0.88

AUC, area under curve; PPV, positive predictive value; NPV, negative predictive value; D, true diffusion coefficient (×10⁻³ mm²/s); K, kurtosis value (dimensionless).