Fig. 4From: Semi-quantitative analysis of visually normal 123I-FP-CIT across three large databases revealed no difference between control and patientsScatterplot of harmonized ScanOnlyDB striatum VOI Specific Binding Ratios (SBR; black open circles) and NoDG5YearsDB (blue open circles). Linear regression lines for age: ScanOnlyDB (magenta solid line) and ScanOnlyDB + NoDG5YearsDB ± 2 SD (black solid and black dotted lines)Back to article page