title: Determination of pulmonary blood flow by videodensitometry.
mesh_terms: D000368:Aged; D000818:Animals; D003720:Densitometry / Q000379:methods; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011652:Pulmonary Circulation; D011655:Pulmonary Embolism / Q000503:physiopathology; D011656:Pulmonary Emphysema / Q000503:physiopathology; D011859:Radiography; D012756:Sheep; D014743:Videotape Recording / Q000295:instrumentation