Figure 4
From: On the robustness of VMAT-SABR treatment plans against isocentre positioning uncertainties
The average dose volume histograms over the brain patients cohort for the reference plans and the plans recalculated after the application of the various isocenter shifts. Each of these curve in the graphs corresponds also to the average over the 6 plans recalculated for each of the shifts (±X, ±Y and ± Z). The results are shown for the PTV, the CTV and the brain stem.