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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: IEEE J Biomed Health Inform. 2019 Jan 30;23(6):2537–2550. doi: 10.1109/JBHI.2019.2896034

Fig. 3.

Fig. 3.

Inscribed spheres and center lines. (a) An inscribed sphere with point clouds from the CT scan images. (b) A center line generated by inscribed spheres.