Fig. 2From: Effects of 30% vs. 60% inspired oxygen fraction during mechanical ventilation on postoperative atelectasis: a randomised controlled trialExamples of CT scans. Original chest CT image: (A) transaxial and (B) sagittal scanning. The red part is the atelectasis area marked by ITK-SNAP software: (C) transaxial and (D) sagittal scanning. CT, computed tomographyBack to article page