Tc-99m HMDP (hydroxymethylene diphosphonate): a radiopharmaceutical for skeletal and acute myocardial infarct imaging. I. Synthesis and distribution in animals.

Technetium-99m hydroxymethylene diphosphonate (Tc-99M HMDP) is a new diphosphonate skeletal imaging agent. Animal studies show that Tc-99m HMDP has a higher uptake on bone and a more rapid clearance from the blood than any of the three technetium-labeled bone imaging agents in current use: Tc-99m methylene diphosphonate (DMP), Tc-99 (1-hydroxyethylidene) diphosphonate (HEDP), and Tc-99m pyrophosphate (PPi). On the basis of these animal studies, Tc-99m HMDP is a highly promising candidate for skeletal imaging.

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