Automated radiosynthesis of the adenosine A(2A) receptor-targeting radiotracer [F-18]FLUDA

[F-18]FLUDA is a selective radiotracer for in vivo imaging of the adenosine A(2A) receptor (A(2A)R) by positron emission tomography (PET). Promising preclinical results obtained by neuroimaging of mice and piglets suggest the translation of [F-18]FLUDA to human PET studies. Thus, we report herein a remotely controlled automated radiosynthesis of [F-18]FLUDA using a GE TRACERlab FX2 N radiosynthesizer. The radiotracer was obtained by a one-pot two-step radiofluorination procedure with a radiochemical yield of 9 +/- 1%, a radiochemical purity of >= 99%, and molar activities in the range of 69-333 GBq/mu mol at the end of synthesis within a total synthesis time of approx. 95 min (n = 16). Altogether, we successfully established a reliable and reproducible procedure for the automated production of [F-18]FLUDA.

Automated summary

In this study, a reliable and reproducible automated production method for [F-18]FLUDA was successfully developed. The method utilized a GE TRACERlab FX2 N radiosynthesizer and achieved high radiochemical yields and purity for the final product.