Fig. 5From: [18F]FE-PE2I PET is a feasible alternative to [123I]FP-CIT SPECT for dopamine transporter imaging in clinically uncertain parkinsonismPET versus SPECT. The lowest putamen/caudate nucleus ratio of the two hemispheres for each subject, PET plotted against SPECT. The dotted line is the line of identity. Red circles are patients categorized as abnormal while blue are normal. Note that delineation and semiquantitative measure are obtained with different methods for PET and SPECTBack to article page