title: Short-lived radioisotopes in cardiorespiratory studies.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002320:Cardiovascular Physiological Phenomena; D006801:Humans; D007204:Indium; D008297:Male; D008875:Middle Aged; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012119:Respiration; D013667:Technetium
chemical_list: D011868:Radioisotopes; D007204:Indium; D013667:Technetium