Table 2.
Column | Helium Ions | Carbon Ions | ||||
---|---|---|---|---|---|---|
yd, keV/µm | RBE (0.5 SF) * | RBE (0.1 SF) * | yd, keV/µm | RBE (0.5 SF) * | RBE (0.1 SF) * | |
1 | 10.4 | ** | ** | 18.6 | 1.61 | ** |
2 | 13.8 | 0.61 | ** | 36.2 | 2.22 | 1.79 |
3 | 19.1 | 1.00 | ** | 55.6 | 3.50 | 2.46 |
4 | 27.9 | 1.61 | 0.96 | 61.3 | 3.82 | 2.26 |
5 | 42.0 | 1.93 | 1.43 | 72.6 | 4.31 | 2.53 |
6 | 51.4 | 2.60 | 1.81 | 87.9 | 4.81 | 2.82 |
7 | 62.0 | 2.89 | 2.24 | 113.8 | 4.56 | 2.67 |
8 | 70.8 | 4.41 | 2.91 | 146.0 | 4.31 | 2.52 |
9 | 79.0 | 5.44 | 3.19 | 181.3 | 3.76 | 2.21 |
10 | 84.9 | 3.97 | 2.33 | 230.8 | 3.40 | 1.99 |
11 | 88.0 | 1.76 | ** | 263.6 | 2.12 | 1.24 |
12 | 84.7 | ** | ** | 270.3 | 0.95 | ** |
* refers to RBE at surviving fractions of 0.5 or 0.1. ** value excluded due to lack of data coverage. Abbreviations: yd, dose-mean lineal energy; RBE, relative biological effectiveness; SF, surviving fraction.