Fig. 2From: Variation of poorly ventilated lung units (silent spaces) measured by electrical impedance tomography to dynamically assess recruitmentCorrelation between dependent silent spaces and recruited lung volume assessed by pressure-volume (P-V) curve. The recruited volume determined by the shift in lung volumes between the P-V curves performed at different levels of positive end-expiratory pressure (PEEP) correlated inversely with the percentage change in dependent silent spaces. IBW Ideal body weightBack to article page