Fig. 1From: Evaluation of the inverse electron demand Diels-Alder reaction in rats using a scandium-44-labelled tetrazine for pretargeted PET imagingSchematic of the bone-pretargeting strategy. Aln-TCO (2) is injected into healthy rats via the tail vein. After 1 h, the radiolabelled tetrazine is injected. PET imaging occurs 4 h after injecting the radiolabelled tracerBack to article page