title: Changes in lung scan pattern related to free fluid and cardiac position.
mesh_terms: D000368:Aged; D001826:Body Fluids / Q000473:pathology; D006332:Cardiomegaly / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000473:pathology*; D008297:Male; D009206:Myocardium / Q000473:pathology; D010477:Perfusion; D010994:Pleura / Q000473:pathology; D011655:Pulmonary Embolism / Q000175:diagnosis; D013902:Radiography, Thoracic; D011877:Radionuclide Imaging