Fig. 3From: Comparisons of the segments of left-sided double-lumen tracheobronchial tubes as industrial productsMeasurement of the external diameters of both lumens and the tracheal and bronchial cuff inflation tubules, and measurement of various cross-sectional areas. We cut the tubes across their diameter at the center of the cuff location (indicated by the red lines) and detached the cuffsBack to article page