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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Phys Med. 2021 Mar 23;84:241–253. doi: 10.1016/j.ejmp.2021.03.005

Fig. 6:

Fig. 6:

Deviation from unity of the dose enhancement ratio (DER) for an extended photon field under secondary particle equilibrium for (a) a 50 nm GNP and 50 kVp X-rays, (b) a 50 nm GNP and 100 kVp X-rays, (c) a 100 nm GNP and 50 kVp X-rays and (d) a 100 nm GNP and 100 kVp X-rays. The different symbols correspond to the different participants in the exercise. Open symbols indicate that the reported simulation results did not pass the plausibility checks and no explanation could be reported by the participant. The other data sets passed the plausibility tests, where in some cases identified normalization issues have been corrected for (indicated by a hashtag). The dot-dashed line is the arithmetic mean of all data derived from simulations results that passed the plausibility tests, and the grey shaded area indicates the estimated 95% uncertainty band considering the scatter of these data and the uncertainties of the procedure used for correcting the lack of secondary photon equilibrium in the simulations.