Fig. 4From: Progression of regional lung strain and heterogeneity in lung injury: assessing the evolution under spontaneous breathing and mechanical ventilationROI array maps of the strain heterogeneity index (SHI). a SB-group at T1, b MV-group at T1, c SB-group at T3, d MV-group at T3. Significant within-subject differences are denoted by * (p < 0.05)Back to article page