Figure 1. Patterns of brain and cardiac catecholaminergic abnormalities.
(A) Decreased putamen 18F-DOPA–derived radioactivity and decreased left ventricular myocardial 18F-dopamine–derived radioactivity. (B) Normal putamen 18F-DOPA–derived radioactivity and normal left ventricular myocardial 18F-dopamine–derived radioactivity. (C) Decreased putamen 18F-DOPA–derived radioactivity and normal left ventricular myocardial 18F-dopamine–derived radioactivity. (D) Normal putamen 18F-DOPA–derived radioactivity and decreased left ventricular myocardial 18F-dopamine–derived radioactivity.