title: Physiological factors affecting lung scan interpretations.
mesh_terms: D006332:Cardiomegaly / Q000503:physiopathology; D003937:Diagnosis, Differential; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology; D008171:Lung Diseases / Q000175:diagnosis; D009765:Obesity / Q000503:physiopathology; D010477:Perfusion; D011187:Posture; D011652:Pulmonary Circulation; D011877:Radionuclide Imaging; D012039:Regional Blood Flow