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OCT images of the anterior segment (LB3) of the left upper lobe directly after ronchial thermoplasty (BT) treatment. a Normal, non-directly-BT-treated distal airway area. b BT-treated airway area with peribronchial oedema. c BT-treated airway area showing epithelial sloughing. d Corresponding reconstructed pullback of the airway (540 2D images, total length of 5.4 cm; Goorsenberg et al. [41]). P, probe.
