Fig. 5From: Same same but different: dopamine transporter SPECT on scanners with CZT vs. NaI detectorsBlue ROC curve for the test group’s putaminal z-scores of the CZT NDB to classify neurodegenerative vs. non-neurodegenerative PS (reference: visual rating). The dotted line serves as reference line. The optimal putaminal z-score cut-off for the CZT NDB (− 2.15; Youden’s index J = 0.94) is marked with a red arrowBack to article page