title: Lung scan patterns in pulmonary embolism versus those in congestive heart failure and emphysema.
mesh_terms: D006332:Cardiomegaly / Q000175:diagnosis; D006333:Heart Failure / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D011655:Pulmonary Embolism / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011656:Pulmonary Emphysema / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography; D011877:Radionuclide Imaging