title: Pulmonary ventilation and perfusion during graded pulmonary arterial occlusion.
mesh_terms: D015502:Absorptiometry, Photon; D000818:Animals; D001049:Apnea / Q000503:physiopathology; D004285:Dogs; D005069:Evaluation Studies as Topic; D005471:Fluoroscopy; D007089:Image Enhancement; D008168:Lung / Q000098:blood supply*; D011652:Pulmonary Circulation; D012123:Pulmonary Ventilation; D012129:Respiratory Function Tests; D013690:Television; D014692:Ventilation-Perfusion Ratio