Figure 5From: Dosimetric robustness against setup errors in charged particle radiotherapy of skull base tumorsPopulation frequency histograms of variations in dosimetric indices for all simulated setup errors and different beam setups. Frequency histograms of the observed CTV Δ V95%, CTV Δ HI and OAR Δ D(near-)max comparing mc treatment plans adopting LR and ROB beam setups for (a) carbon ions and (b) protons. Abbreviations: CTV – clinical target volume, OAR – organ(s) at risk, LR – lateral-opposed beam setup, ROB – robust beam setup, mc – multiple-field modulation.Back to article page