Figure 5From: Determination of regional lung air volume distribution at mid-tidal breathing from computed tomography: a retrospective study of normal variability and reproducibility This illustrates the reproducibility of measuring parameters of lung volume. Graph (a) shows the results for total volume and (b) for fractional air volume concentration (FAVC) for the right lung (♦) and left lung (■). In each graph, the line is the line of identity. The corresponding Bland-Altman plots of difference in measurements against mean of measurements are shown in graphs (c) and (d).Back to article page