title: Effect of small amounts of 131I on 99mTc detection by the scintillation camera.
abstract: A patient who had recently received a therapeutic dose of Na131I showed no 99mTc activity on the scintillation camera when a pertechnetate brain scan was attempted. Subsequent experiments showed that, when even small amounts of 131I are present in the field of view of a scintillation camera equipped with a collimator designed for low-energy photons, counting rates from 99mTc are markedly affected.
mesh_terms: D001927:Brain Diseases / Q000175:diagnosis; D005260:Female; D006044:Goiter, Nodular / Q000532:radiotherapy; D006801:Humans; D007457:Iodine Radioisotopes / Q000627:therapeutic use*; D008875:Middle Aged; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D007457:Iodine Radioisotopes; D013667:Technetium