Fig. 4From: Positional effects on the distributions of ventilation and end-expiratory gas volume in the asymmetric chest—a quantitative lung computed tomographic analysisDistribution of tidal ventilation. Please refer to Fig. 1 for nomenclature. Tidal changes in regional gas volume were significantly different in the supine and lateral positions with dependent and non-dependent PLEF. Prone position (asterisk), however, showed a more homogeneous gas volume distribution among quadrants compared to other horizontal positionsBack to article page