Computed tomography-derived assessment of respiratory impairment in thoracic scoliosis: Comparison between idiopathic and non-idiopathic etiologies

Figure 2 Computed tomography-derived respiratory function parameters. A: Lung segmentation and volumetric analysis; B: Airway segmentation and measurement. Parameters included lung volumes (total, right, left, upper, middle, and lower lobes), maximum and minimum airway diameters, cross-sectional area at four predefined sites (tracheal bifurcation, narrowest tracheal segment, and narrowest segments of the right and left bronchi), and the right-to-left bronchial length ratio.