Bone scintigraphy with sup(99m)Tc-MDP

On 57 patients, in whom bone metastasis of various cancers was suspected and benign diseases including femur head necrosis were found, bone scintigraphy with sup(99m)Tc-MDP was carried out, and the effectiveness was examined. The labeled rate was remarkably good within prescribed period for use, within 4 hours. On the basis of the bone accumulation rate and the physical half-life, the examination was found to be suitably performed about 3 hours after the injection of RI. Because the background was low, and the clear and fine bone accumulation was drawn in this scintigram, it was a little superior to the scintigram with sup(99m)Tc-DP. No side effects were observed in all the patients. (Kumagai, S.)