Fig. 3.

Regional distribution of non-inflated lung compartment in patients’ subgroups defined based on dichotomous variables. A exposure to mechanical ventilation before the chest CT (yes/not); B exposure to a mean tidal volume higher/lower than 6 mL/kg PBW; C duration of spontaneous breathing for more/less than 14 days before the chest CT; D plasma ferritin lower/higher than 1000 ug/L. * to indicate statistical difference. The regional distribution of lung compartments is expressed in % of total parenchyma (y-axis) for all the reported graphs. For p-values, see Supplementary materials. Vt: tidal volume, PBW: predicted body weight, SB: spontaneous breathing