bone scans

Bone scans



Technetium 99m labelled MDP (Mono - diphosphonate)




1.  Pure gamma emitter


2.  Half life only 6 hours

- limits radiation exposure


3.  Localises in bone

- chemical interaction on the surface of the hydroxyapatite crystal of bone

- phosphorous component interacts with the endogenous calcium

- produces insoluble technetium calcium phosphate complexes.