Figure 3.

Pulmonary perfusion maps of the left lung in one animal with acute lung injury induced by lavage. Left panel: Perfusion map after induction of injury and mechanical ventilation according to the ARDS Network protocol. Right panel: Perfusion map after 6 h of mechanical ventilation according to the ARDS Network protocol, but using variable tidal volumes. Note the increase in perfusion in the more dependent basal-dorsal zones (ellipses), suggesting alveolar recruitment through variable ventilation. Blue voxels represents lowest and red voxels, highest relative pulmonary blood flow. Adapted from [41].