title: PIOPED(Prospective Investigation in Pulmonary Embolism Diagnosis) study compares lung scans and pulmonary arteriography.
authors.forename: S
authors.initials: S
authors.lastname: Tilyou
mesh_terms: D006801:Humans; D015337:Multicenter Studies as Topic; D011655:Pulmonary Embolism / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D011877:Radionuclide Imaging; D014481:United States