Optimization of Automated Radiosynthesis of Gallium-68-Labeled PSMA11 with Two [Ge]Ge/[Ga]Ga Generators: Fractional Elution or Prepurification?

Prostate cancer is one of the most common forms of cancer in men. An imaging technique for its diagnosis is [Ga]-prostate-specific membrane antigen ([Ga]Ga-PSMA-11) positron emission tomography (PET). To address the increasing demand for [Ga]-labeled peptides and reduce the cost of radiosynthesis, it is therefore necessary to optimize the elution process of [Ge]Ge/[Ga]Ga generators.