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. Author manuscript; available in PMC: 2009 Sep 21.
Published in final edited form as: Int J Comput Assist Radiol Surg. 2008;3(1-2):131–142. doi: 10.1007/s11548-008-0215-8

Figure 4.

Figure 4

Application of fast marching method to calculate adaptive gradient/curvature, (a) definition of interface propagation, and (b) the adaptation to the case of partial volume colon wall.