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Figure 2 | Critical Care

Figure 2

From: Extrapolation in the analysis of lung aeration by computed tomography: a validation study

Figure 2

Accuracy of extrapolation for different numbers of reference CT slices. The accuracy of extrapolation was assessed by Bland-Altman analysis for different numbers of reference CT slices, which are plotted on the x-axis. To cover a broad range of lung volumes and masses for this analysis, CT data from normal and opacified lungs were pooled for each species. The solid red line indicates the mean difference between whole-lung CT analysis and extrapolation (bias) for each number of reference CT slices used for extrapolation. The dashed lines indicate the 95% limits of agreement (LOA). In addition to total lung volume and mass, the nonaerated lung compartment was chosen for presentation because of its pathophysiological relevance.

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