Figure 1
From: Extrapolation in the analysis of lung aeration by computed tomography: a validation study
Bland-Altman plots for the agreement between extrapolation and whole-lung analysis. The solid red line indicates the mean difference between whole-lung CT analysis and extrapolation (bias) and the dashed red lines correspond to the 95% limits of agreement. To cover a broad range of lung volume and mass for each species, CT data from normal and opacified lungs were pooled for this analysis. g, grams; ml, milliliters; Vall/Mall, lung volume or mass calculated from all CT-slices covering the entire lung; Vextra/Mextra, lung volume or mass obtained by extrapolation.