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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2013 May 18;86(5):1007–1013. doi: 10.1016/j.ijrobp.2013.04.009

Fig. 2.

Fig. 2

Convergence of estimated E[DVH] value for a selected patient as a function of (a) number of fractions and (b) number of courses for internal target volume (ITV) and esophagus. (b) Approximately 60 cumulative dose samples that consist of 10 fractions were needed to contain the maximum deviation in convergence value of E[DVH] within 1%.