Fig. 2From: Quantitative evaluation of PSMA PET imaging using a realistic anthropomorphic phantom and shell-less radioactive epoxy lesionsSodium-22 epoxy spheres. a Schematic of aluminium mould used for casting 3–16-mm spheres. b Radioactive epoxy spheres (3–16 mm) infused with 22Na-NaCl. c Transaxial PET image slices of Probe-IQ pelvis with 22Na spheres inserted into [18F]FDG background, which establishes increased lesion contrast at later timesBack to article page