Fig. 5From: Feasibility of PET/CT system performance harmonisation for quantitative multicentre 89Zr studiesRC curves normalised to the largest sphere, derived from the phantom experiments using SUVmean (a), SUVmax (b) and SUVpeak (c) quantitative metrics. Systems 1–2 and 3–4 represent GE scanners Discovery 690 and Discovery 710, respectively; systems 5–6 are Siemens Biograph 40_mCT and Somatom Definition AS_mCT; system 7 is the Philips Ingenuity TF PET/CT; system 8 is the Siemens Biograph 64_mCTBack to article page