title: Regional pulmonary perfusion assessed with continuous intravenous infusion of Kr-81m: a comparison with Tc-99m macroaggregates.
mesh_terms: D006801:Humans; D007726:Krypton / Q000008:administration & dosage; D008168:Lung / Q000098:blood supply / Q000000981:diagnostic imaging*; D008171:Lung Diseases / Q000000981:diagnostic imaging; D010477:Perfusion; D011868:Radioisotopes / Q000008:administration & dosage; D011877:Radionuclide Imaging; D012039:Regional Blood Flow; D013667:Technetium / Q000008:administration & dosage; D013679:Technology, Radiologic; D014692:Ventilation-Perfusion Ratio
chemical_list: D011868:Radioisotopes; D007726:Krypton; D013667:Technetium