Comparison of Four PET/CT Systems

Four PET/CT systems equipped with both ToF and PSF capabilities from three major vendors (General Electric (GE), Siemens and Philips) were selected for this study. Systems included were the Siemens Biograph mCT (Siemens system 1), the Siemens Biograph mCT Flow (Siemens system 2), the GE Discovery 710 (GE system) and the Philips Ingenuity TF 128 (Philips system). The equipment was calibrated in accordance with the corresponding manufacturer’s instructions. In addition, all systems were participating and accredited in the EANM/EARL 18F–FDG PET/CT accreditation program. Detailed specifications for the systems can be found in supplemental Table 1 and references [47 (link)–51 ].