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. 2013 Jun 17;19(2):120–134. doi: 10.1016/j.rpor.2013.05.002

Fig. 4.

Fig. 4

Distribution of patients treated with RTSEI from 1981 to 2012. 1992–2005: 155 patients treated with the Varian Clinac-18. 2005–2012: 17 patients treated with the Varian Clinac-21 EX.