. 2021 Jun 12;16:104. doi: 10.1186/s13014-021-01829-y

Table 1.

$α / β$ 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

Cell line	SPION concentration
	Control			23.5 μg/ml
	$α$ (Gy⁻¹)	$β$ (Gy⁻²)	$α / β$ (Gy)	$α$ (Gy⁻¹)	$β$ (Gy⁻²)	$α / β$ (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