Differentiation of pulmonary embolism from chronic airways obstruction by a dual isotope technique.
D000328:Adult; D000402:Airway Obstruction / Q000000981:diagnostic imaging*; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006801:Humans; D007726:Krypton; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011868:Radioisotopes; D011877:Radionuclide Imaging; D013667:Technetium; D014692:Ventilation-Perfusion Ratio
D011868:Radioisotopes; D007726:Krypton; D013667:Technetium