Table 2. GD_V5 values for the two tumour models.

For LN229 treated with a dose of 3.5 Gy the value was not calculated since the corresponding time values are not significantly different from control. Dose errors include systematic and measuring uncertainties of film calibration and dose measurement; errors of the individual GD_V5 values were calculated by error propagation.

HNSCC FaDu		GBM LN229
Dose ± ΔD / Gy	GDV5 ± se / d	Dose ± ΔD / Gy	GDV5 ± se / d
3.8 ± 0.2 Gy	6.8 ± 2.3	3.5 ± 0.2 Gy	---
7.9 ± 0.5 Gy	16.5 ± 2.3	7.0 ± 0.4 Gy	14.2 ± 3.3
11.9 ± 0.7 Gy	---	10.5 ± 0.6 Gy	23.2 ± 4.1
15.9 ± 1.0 Gy	---	14.0 ± 0.8 Gy	39.8 ± 3.6