FIGURE 4.  The 95% confidence intervals of most discriminating regions between IPD, MSA, PSP, LBD, and ET for combined perfusion and DAT imaging. Perfusion values are relative to the whole-brain gray matter average; ¹²³I-FP-CIT binding indices are calculated as (uptake/occipital uptake – 1). R = right; L = left; THAL = thalamus; CBL = cerebellum; Post = posterior; Put = putamen; CNC = caudate head; MSA-p = striatal (parkinsonian) variant of MSA; MSA-c = cerebellar variant of MSA.