A comparison of radiobiological models for light ion therapy

• Treatment planning for light ion therapy requires development of radiobiological models describing the effects of light ion irradiation on cellular survival. The aim of this work is to compare some of these radiobiological models currently in use. The benchmark cell line used in these studies is an AA human melanoma cell line, irradiated in vitro under aerobic conditions by 60Co and 10B5+ ions of different values of linear energy transfer (40, 80, 125 and 160 keV/μm). The models used to analyze the data were: the standard linear-quadratic (LQ) model, the repairable-conditionally repairable (RCR) model, the probabilistic two-stage (P2S) model, Katz’s cellular track structure theory (TST), and the local effect model (LEM).

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