Figure 6
From: Dosimetric robustness against setup errors in charged particle radiotherapy of skull base tumors
Population frequency histograms of variations in dosimetric indices for all simulated setup errors and different ion species. Frequency histograms of the observed CTV Δ V95%, CTV Δ HI and OAR Δ D(near-)max comparing carbon ion and proton treatment plans with (a) mc LR and (b) mc ROB planning approaches. Abbreviations: CTV – clinical target volume, OAR – organ(s) at risk, LR – lateral-opposed beam setup, ROB – robust beam setup, mc – multiple-field modulation.