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Values of apparent diffusion coefficient (ADC) and end inspiratory lung volumes (EILV) during ascending and descending PEEP ramps performed as described in Figure 5. All values are expressed as fraction of baseline at positive end expiratory pressure (PEEP) of zero. Dissociation between the hysteretic behavior of the whole lung and the responses of airspace dimensions is again shown. (Reproduced from Ref 96).
