FIGURE 1.  Representative parametric images of ¹⁸F-CPFPX DV_t in healthy 46-y-old male volunteer. A through D and E through H were generated by voxelwise graphical analysis without preceding spatial gaussian smoothing and with preceding spatial gaussian smoothing (filter kernel of 5 mm FWHM), respectively. Total scan durations were 90 min (A and E), 75 min (B and F), 60 min (C and G), and 45 min (D and H).