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Examples for airway extraction. Week 3, 4, 5 for Rabbits C and D; week 3, 4, 5, 7 for Rabbit I; and week 4 for Rabbit A are shown in the figure. As illustrated, cavities are within close vicinity for Rabbits C, D, and I; while it is away from segmented airway for Rabbit A due to broken structure caused by imaging artifacts.
