Evaluation of an automated synthesis method for [¹⁸F]Fluoromisonidazole using a Scintomics GRP® module

There is limited information on utilizing commercially supplied [¹⁸F]Fluoride from an off-site cyclotron for the synthesis of radiopharmaceuticals. This study explored the production of the PET hypoxia marker [¹⁸F]FMISO, using the Scintomics® GRP module and distantly produced [¹⁸F]Fluoride, which lacks published data. A radiochemical yield of 27.4 ± 3.6% (n = 5) and high radiochemical purity were achieved in synthesis time of 48 min. The [¹⁸F]FMISO met all Ph. Eur. standards, demonstrating the consistency and reliability of the module in generating a clinical-grade radiopharmaceutical using off-site produced [¹⁸F]Fluoride, but available patient doses were severely limited.