Fig. 5.

Receiver operating characteristic curve of cerebral blood flow in distinguishing subcortical ischemic vascular disease (SIVD) from normal cognition (NC) and Alzheimer’s disease (AD). RSFG, right superior frontal gyrus; RIFG, right inferior frontal gyrus; RSTG, right superior temporal gyrus; LMFG, left middle frontal gyrus; AUC, area under the curve; CI, confidence interval; Sens., sensitivity; Spec., specificity. Cut-off value, sentivity, and specificity are reported when AUC is significant.