Fig. 4
Relative regional cerebral blood flow (rCBFR) in relation to striatal DAT activity. Legend Plots illustrating the relationship between rCBFR in (A) putamen and (B) the caudate, measured by R1 (FE-PE2I) and F (H2O) and striatal DAT activity. Red circles: patients with pathologically reduced striatal DAT uptake. Blue rhombs: patients without signs of dopaminergic deficit, “SWEDD” (i.e., normal striatal DAT activity). Open squares: healthy controls (HC) with normal DAT activity in the striatum