Tc-99m-MDP Bone Scan
often provides an earlier diagnosis and demonstrates more lesions than are found by radiographic procedures.
Tc-99m-mdp (methylene diphosphonate) is a bone seeking agent that concentrates in the mineral phase of bone. 2-3 hours after injection, 50%-60% of the activity localizing in bone and the remainder is cleared by the kidneys. F18-naf bone scans are done with pet cameras, r + expensive.