α, β (Corrected for Indefinite Exposure) and α/β Values for DLD-1 and HT-29 Cell Lines Adopted from Lee et al. (16) Compared with a Mixed Model After Exposure to 6 MV Photons (EBRT) or 90Y
| Cell line | Radiation source | α (Gy−1) | β (Gy−2) | α/β (Gy) |
| DLD-1 | EBRT | 0.273 [0.187–0.359] | 0.0189 [0.00970–0.0282] | 14.4 [3.15–25.7] |
| 90Y | 0.106 [0.075–0.137] | 0.000716 [−0.00008–0.00151] | 148 [−56.3–353] | |
| HT-29 | EBRT | 0.050 [0.008–0.092] | 0.0276 [0.0230–0.0323] | 1.81 [0.0247–3.60] |
| 90Y | 0.090 [0.063–0.116] | 0.000092 [−0.001018–0.001201] | 979 [−6911–8861] | |
| Mixed model | EBRT | 0.176 [0.0092–0.256] | 0.0219 [0.0136–0.0304] | 8.02 [1.39–14.6] |
| 90Y | 0.0977 [0.075–0.12] | 0.00043 [−0.00015–0.001] | 226 [−129–582] |
Range shown in brackets represents 95% confidence interval of estimated parameter.