title: The single perfusion abnormality: Quo vadis?
authors.forename: H W
authors.initials: HW
authors.lastname: Gray
mesh_terms: D006801:Humans; D011652:Pulmonary Circulation / Q000502:physiology*; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011859:Radiography; D011877:Radionuclide Imaging