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. Author manuscript; available in PMC: 2010 Jun 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2008 Oct 27;74(2):440–446. doi: 10.1016/j.ijrobp.2008.08.015

Figure 1.

Figure 1

Markov model. NED = no evidence of disease. The utility of the NED health states may vary according to modality of radiotherapy (WBRT vs. PBI) and to time since RT (0–5 years versus 6–15 years).