Fig. 4From: Single-site 123I-FP-CIT reference values from individuals with non-degenerative parkinsonism—comparison with values from healthy volunteersEffect of age and gender on specific binding ratio (SBR) values computed as the average of left and right SBRs within the striatum and plotted as a function of age. Also shown are regression lines with slope and intercept for the FBP database (female, blue; male, red)Back to article page