Diffusion Kurtosis Imaging of Substantia Nigra Is a Sensitive Method for Early Diagnosis and Disease Evaluation in Parkinson’s Disease

Table 2

ROC analysis of FA and MK for the SN.

	FA	MK
Sensitivity %	86.1	94.4
Specificity %	91.7	91.7
AUC	0.948	0.976
95% confidence intervals of AUC	0.937~0.960	0.966~0.985