ESTRO 2025 - Abstract Book

S2690

Physics - Dose calculation algorithms

ESTRO 2025

Figure 1. Results of gamma pass rate for ArcCHECK measurements, SciMoCa dose-to-medium and dose-to-water and Mobius3D in comparison to RayStation CC calculations.

Figure 2. Results of gamma pass rate for SciMoCa dose-to-medium in comparison to RayStation MC and CC calculations.

Conclusion: The Monte Carlo-based 3D secondary dose check of RayStation CC resulted in significantly higher pass rates than ArcCHECK measurements (p = 0.012, Wilcoxon signed rank test). The mean pass rates of MC-based dose-to-medium and dose-to-water in SciMoCa were comparable. MC-based secondary dose check In SciMoCa is more precise than in Mobius 3D. The Monte Carlo-based 3D secondary dose check of Monte Carlo calculations in RayStation showed even better results.

Keywords: Monte Carlo secondary dose check, dose-to-medium

References: 1.

Petoukhova AL, van Egmond J, Eenink MG, Wiggenraad RG, van Santvoort JP. The ArcCHECK diode array for dosimetric verification of HybridArc. Phys Med Biol. 2011 Aug 21;56(16):5411-28. doi: 10.1088/0031-9155/56/16/021.