Figure 5
Regional lung volume. (a) Relationship of regional lung volume measured with electrical impedance tomography (VLEIT predicted) and positron emission tomography (VAatten) in the second part of the experiment. The regression line was drawn over all experimental points pertaining to normal and acute lung injury conditions in each quadrant. (b) Relationship of the difference to the mean of regional lung volume measured with electrical impedance tomography (VLEIT predicted) and positron emission tomography (VAatten) in the second part of the experiment. Horizontal continuous line and horizontal broken lines are the mean and the upper (mean + 2 standard deviations) and lower (mean - 2 standard deviations) values of the difference, respectively.