Fig. 6From: Single-site 123I-FP-CIT reference values from individuals with non-degenerative parkinsonism—comparison with values from healthy volunteersLeft and right putamen to caudate ratios for the Flash3D (upper row) and the FBP (bottom row) databases irrespective of gender. The solid blue line (y = mean + 2 × standard deviations of corresponding reference values) defines the reference limit above which a scan could be suspected as being positiveBack to article page