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. 2014 Dec 5;9:279. doi: 10.1186/s13014-014-0279-2

Figure 5.

Figure 5

Population frequency histograms of variations in dosimetric indices for all simulated setup errors and different beam setups. Frequency histograms of the observed CTV ΔV95%, CTV ΔHI and OAR ΔD(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.