title: Cobalt-57 bleomycin for imaging head and neck tumors.
abstract: Cobalt-57 bleomycin imaging was performed in 11 patients with a history of head and neck cancer. Clinical and scan findings concurred on the presence and extent of tumor in 9 patients (82%); tumor was present in 7 and absent in 2 of the 9. In 2 patients (18%) the scan demonstrated tumor in the neck but failed to show metastatic sites. Cobalt-57 bleomycin images were of good technical quality, with remarkably low background activity at 24 hours after administration. Cobalt-57 bleomycin imaging appears to be a promising technique for evaluating patients with head and neck tumors.
mesh_terms: D000328:Adult; D000368:Aged; D001761:Bleomycin / Q000008:administration & dosage; D003037:Cobalt Radioisotopes; D005069:Evaluation Studies as Topic; D005260:Female; D006258:Head and Neck Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging
chemical_list: D003037:Cobalt Radioisotopes; D001761:Bleomycin