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Table 1 Photon parameters applied during the in silico investigations. The Dt parameter is required for LEM calculations only

From: Biophysical modeling and experimental validation of relative biological effectiveness (RBE) for 4He ion beam therapy

αx [Gy−1] βx [Gy− 2] (α/β)x [Gy] Dt [Gy] calculation type References
0.2 0.1 2 6.2 water  
0.2 0.02 10 15 water  
0.036 0.024 1.5 5.65 prostate Brenner and Hall (1999) [39]
0.089 0.0287 3.1 7.41 prostate Terry and Denekamp (1984) [41]
0.077 0.009 8.6 13.41 head Jones and Sanghera (2007) [42]
0.0499 0.0238 2.1 6.31 head Meeks et al. (2000) [43]