Figure 2From: Automated measurement of heterogeneity in CT images of healthy and diseased rat lungs using variogram analysis of an octree decomposition Unfiltered coronal slices from 3D images of A) a control rat, B) a full-lung-dose rat, and C) a single-lobe-dose rat. Only subtle differences between the full-lung-dose and control rats are evident; however, the distal region of the left lobe of the single-lobe-dose rat has considerably lower signal intensity, indicative of tissue destruction and/or air trapping characteristic of emphysematous disease.Back to article page