Seventy-one cases with bone metastases were treated with

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Sm-EDTMP

41 of them were administrated a single intravenous injection of 37mBq/kg

and 30 of them received more than one injection.The pain palliation was observed among them

and the changes of the metastases focus were analyzed in patieats retreated.It was found

that pain palliation occurred in 80.5%（33/41）of the single treatment group

and in multiple treatment group pain palliation occupied 90.0%（28/30）

the improvement of lesions occupied 50.6%.the results indicate that

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Sm-EDTMP not only can relief bone pain

but also have curative effects on metastases lesions.