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. 2018 Nov 8;13(11):e0206879. doi: 10.1371/journal.pone.0206879

Table 2. RBE values obtained for the two proton radiation qualities.

mid-SOBP plateau
RBE30Gy± se 1.60 ± 0.32 1.41 ± 0.08
RBE20Gy± se 1.20 ± 0.04 1.13 ± 0.08

Dose dependent RBE values (± standard error) calculated on basis of the obtained survival rates 4 dpi with protons of the mid-SOBP and the entrance plateau relative to 6 MV photons.