“…To correct for photon attenuation, transmission scans using 8 68 Ge ring sources were done. Input function was calculated by determining the plasma activity of arterialized venous blood samples over time (2,4,6,8,10,15,20,30,45, and 60 minutes following injection of 18-FDG). Reconstruction of 45 transverse attenuation-corrected slices of 3.375-mm thickness each in a 128ϫ128 matrix was done with a Hanning filter (cutoff frequency 0.5).…”