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. Author manuscript; available in PMC: 2017 Jul 7.
Published in final edited form as: Phys Med Biol. 2017 Jun 12;62(13):5383–5402. doi: 10.1088/1361-6560/aa6e20

FIG. 2.

FIG. 2

(a, c, e): f-volume curve for an esophageal tumor, its derivative, and its Menger curvature, respectively; (b, d, f): the fitted f-volume curve (blue line), its derivative, and its Menger curvature, respectively.