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Table 1 \(\alpha /\beta\) ratios and SERs SERs taken from the corresponding linear quadratic curves in Fig. 6 for a 1 h exposure time. The SPION graph for H460 cells was unable to generate an accurate α value, which was constrained to be > 0

From: Impact of superparamagnetic iron oxide nanoparticles on in vitro and in vivo radiosensitisation of cancer cells

Cell line SPION concentration
Control 23.5 μg/ml
\(\alpha\)(Gy−1) \(\beta\)(Gy−2) \(\alpha /\beta\)(Gy) \(\alpha\)(Gy−1) \(\beta\)(Gy−2) \(\alpha /\beta\)(Gy) SER for 8 Gy SER for 10% SF
H460 0.049 ± 0.047 0.045 ± 0.006 1.08 ± 0.61 0 0.081 ± 0.005 0 1.18 ± 0.10 1.45 ± 0.36
MiaPaCa2 0.198 ± 0.049 0.024 ± 0.007 8.33 ± 1.81 0.094 ± 0.059 0.045 ± 0.092 2.09 ± 0.79 1.09 ± 0.10 1.05 ± 0.47
DU145 0.038 ± 0.064 0.051 ± 0.009 0.74 ± 0.72 0.196 ± 0.013 0.048 ± 0.002 4.06 ± 0.17 1.17 ± 0.07 1.23 ± 0.19
MCF7 0.118 ± 0.122 0.071 ± 0.017 1.67 ± 0.95 0.186 ± 0.132 0.055 ± 0.018 2.77 ± 1.03 0.95 ± 0.39 0.98 ± 0.30
U87 0.180 ± 0.031 0.015 ± 0.004 12.35 ± 2.45 0.122 ± 0.030 0.019 ± 0.004 6.23 ± 1.18 0.96 ± 0.21 0.94 ± 0.17
HEPG2 0.161 ± 0.042 0.021 ± 0.006 7.51 ± 1.61 0.272 ± 0.076 0.025 ± 0.011 11.08 ± 3.26 1.28 ± 0.03 1.31 ± 0.32