post-operative lung function studies , including measurements of regional ventilation ( vr ) and perfusion ( qr ) by 133 xenon technique showed that : 1 ) two weeks after surgery , forced expiratory volume at 1 s was more reduced after simple than after sleeve lobectomy , but in both groups vr and its vertical gradient were similarly reduced in the operated lung compared to the contralateral ;
C0396585
sleeve lobectomy
C0024109
lung