Abstract
68Ge/68Ga generators provide cyclotron-independent access to positron emission tomography (PET) radiopharmaceuticals. We describe a system which allows the safe and efficient handling of 68Ge/68Ga generator eluates for labelling of DOTA-derivatised peptide ligands. The system comprises concentration and purification of the 68Ga eluate as well as labelling and purification steps for peptides, and can be used with different 68Ge/68Ga generator types. The suitability and efficiency were tested with two different DOTA-derivatised somatostatin derivatives and a DOTA-derivatised bombesin derivative. Amounts of 10–20 nmol of the peptides were sufficient and resulted in labelling yields of 50% for all peptides. The built-in safety precautions have proven to be appropriate in allowing use of the method for routine clinical applications. The system was set up and operated in a “hot lab” by personnel with no previous experience in the preparation of PET radiopharmaceuticals.
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H.M. would like to thank the Swiss National Science Foundation for financial support.
The work was performed within the COST B12 action of the EEC.
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Meyer, GJ., Mäcke, H., Schuhmacher, J. et al. 68Ga-labelled DOTA-derivatised peptide ligands. Eur J Nucl Med Mol Imaging 31, 1097–1104 (2004). https://doi.org/10.1007/s00259-004-1486-0
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DOI: https://doi.org/10.1007/s00259-004-1486-0