Fig. 2From: Prone positioning improves ventilation–perfusion matching assessed by electrical impedance tomography in patients with ARDS: a prospective physiological studyEvolution of Tidal image region (%) (A), Blood flow region (%) (C), ventilation (B) or perfusion distribution (%) (D) in the horizontal regions of interest (ROIs) at T0, T1, and T2. *vs. T0, p < 0.05. #vs. T1, p < 0.05Back to article page