title: Head scintigraphy with krypton-81m.
mesh_terms: D000818:Animals; D004285:Dogs; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D007726:Krypton; D011868:Radioisotopes; D011877:Radionuclide Imaging
chemical_list: D011868:Radioisotopes; D007726:Krypton