title: 133Xe studies of collateral ventilation and air trapping following endobronchial occlusion.
mesh_terms: D000818:Animals; D001995:Bronchography; D002404:Catheterization; D004285:Dogs; D008173:Lung Diseases, Obstructive / Q000000981:diagnostic imaging / Q000503:physiopathology*; D010477:Perfusion; D011175:Positive-Pressure Respiration; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012119:Respiration; D013147:Spirometry; D014978:Xenon
chemical_list: D011868:Radioisotopes; D014978:Xenon