The purpose of this study was to compare the diagnostic performance of manually fused PET images obtained using 18F-FDG and CT images with that of CT alone, PET alone, and conventional side-by-side review of PET images and CT images (hereafter referred to as "PET + CT") in patients with suspected recurrent colorectal cancer.
Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Shogoinkawahara-cho, Sakyo-Ku, Kyoto 606-8507, Japan.