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New strategies for rapid (18)F-radiolabeling of biomolecules for radionuclide-based in vivo imaging.

The increasing availability of highly active no-carrier-added [(18)F]-fluoride makes its use in radiolabeling biomolecules attractive. By incorporating "fluorophilic" elements (Si, B, and Al) into biomolecules, recent advances offer mild and rapid (18)F-labeling approaches without HPLC purification at the radiosynthetic stage while maintaining sufficient specific activity. In this Topical Review, we will discuss the most recent strides in the field.