Figure 7. Distribution of landmarks.

For each anatomic feature identified in this work, the minimum distance to the respective contoured eBH-CT lung surface was determined. The set of distance measurements was compiled to generate the overall cumulative distribution shown at left. An illustration of the measurement process is depicted at right for an example transverse section. Reference features are identified by crosshair, with adjoining line segment indicating the minimum distance to the contoured surface (overlain in red). For this example slice, 20 features (12 right lung; 8 left lung) were identified and are shown color-coded according to magnitude distance to surface, ranging from 3 – 37 mm.