Indium (111In)-labelled bleomycin for the detection of intracranial lesions.

Brain scans with 99mTc pertechnetate were compared with scans made after administration of 111Indium bleomycin in 38 patients scanned on 41 occasions. They gave similar results in 34 pairs of examinations, including cases in which both failed to detect the tumour. In seven cases, the two agents differed. In two of these bleomycin distinguished residual tumour from the effects of craniotomy more clearly than did pertechnetate; in three bleomycin apparently detected tumour not seen with pertechnetate, and in two the differences may have been due to technical factors, or are unexplained.