Automated Lobe-Based Airway Labeling

Figure 2

An example used for illustrating the steps of the labeling algorithm: (a) a segmented airway tree that can be obtained using any airway segmentation algorithm, (b) the extracted skeleton/centerline of (a) in the form of point/voxel, (c) skeleton segments obtained by the algorithm of [18], (d) individual branch labeling (in different colors), (e) different generation labeling (in different colors), (f) lobe labeling (trachea, RUL, RML, RLL, LUL, LLL are colored with green, blue, red, yellow, cyan, and magenta, resp.), (g) airway tree volume labeling.

(a) A segmented airway tree

(b) Skeleton extraction

(c) Initial skeleton segments

(d) Branch labeling

(e) Generation labeling

(f) Lobe labeling

(g) Airway volume labeling