title: Letter: Brain scannng with 99mTc-pertechnetate.
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis*; D003951:Diagnostic Errors; D006408:Hematoma, Subdural / Q000175:diagnosis*; D006801:Humans; D009362:Neoplasm Metastasis; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium