[Diagnosis of skeletal tumors using 113mIn-indifor]

A new Soviet osteotropic agent 113mIn-indifor was used in clinical practice in 88 patients with primary (56), secondary (22), and systemic (10) skeletal diseases. The sensitivity of the method was 87.7%, its specificity--75%. The main indication for its use was a search for new or additional metastatic foci in malignant tumors of various sites. Investigations using 113mIn-indifor and 99m Tc-phosphates were conducted in 35 patients with different skeletal lesions. The authors obtained the results indicating the same informative value of both radiopharmaceuticals--90.3%. In view of some difficulties in supplies of generators of technetium, 113mIn-indifor can replace 99m Tc-phosphates in routine investigations of primary and especially metastatic skeletal lesions.