Figure 2

Comparison of ungated (A) and quiescent period gated (B) [18 F]FDG PET image reconstructions. The maximum standardized uptake value (SUV) is increased in the gated image of a detached lesion and the SUV profiles (C) show clear sharpening of the gated uptake spatial distribution (black line). This improvement in quantification would potentially alter the definition of biological targets for motion-compensated and PET/CT-guided radiotherapy.