title: Proceedings: Pulmonary atresia: assessment by lung imaging of pulmonary perfusion before and after operation.
mesh_terms: D006330:Heart Defects, Congenital / Q000601:surgery*; D006801:Humans; D011652:Pulmonary Circulation; D011664:Pulmonary Valve / Q000002:abnormalities*; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium