Radionuclide impurities in [18F]F− and [18F]FDG for positron emission tomography

The paper describes radionuclide impurities (γ-emitters and 3H) in proton irradiated 18O enriched water from an Nb target vessel with Nb entrance window, their distribution in different synthesis steps and finally in the PET radiopharmaceuticals [18F]Fluoride and [18F]FDG.