Abstract
The worldwide usage of [18F]-sodium fluoride in clinical applications has increased the interest in the facility of its production. The development of a new automated method for multi-preparations of [18F]-NaF and [18F]FDG on an Explora FDG4 module is described. Explora FDG4 is one of the most widely used synthesizers for FDG production in daily routine use and is specifically designed to run up to four different productions with a single module. Therefore, slight modifications are carried out in order to increase the potential of the synthesizer to perform more radiopharmaceuticals. A fully automated method for multi-preparations of [18F]-NaF and [18F]FDG using Explora FDG4 was developed. Slight modifications to the Explora's hardware and software configuration were applied. A new elution vial for NaF preparation was installed and connected to the free position to MVP1. Quality control was carried out using the standard analytical methods applied for GMP production. This modification successfully provides preparation of [18F]-NaF without affecting the daily FDG production using one set preparation. [18F]-NaF was obtained in a high radiochemical yield (>90%, n=100) in 10 min total preparation time. The quality control results for both obtained products, FDG (RCP >95%) and NaF (RCP >98%), showed that the radiopharmaceuticals were in compliance with USP and Ph.Eur. specifications and compatible with clinical applications. A rapid and simple method for multi preparations of [18F]-NaF and [18F]FDG using a single Explora module was designed. Yet, the chemistry module has the potential to generate more radiopharmaceuticals to decrease the cost of preparation of [18F]-NaF compared to the cassette-based synthesizers, reducing radiation exposure resulting from manual preparations and increasing the reproducibility of [18F]-NaF preparation.
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