Figure 4.

Navigation dashboard for multiple Pareto surface navigation. Six anchor plans with their dose volume histograms (DVHs) are shown. For each plan, four control buttons appear at the left of the DVH. The increase arrow ∧ is used to increase the contribution of this type of plan, and the downward facing arrow ∨ is for the opposite. The buttons labeled S caused the active surface that is being navigated to switch to the closest other surface in the computed set, which offers the chance for more improvement regarding that objective. The check box is used as a constraint. If this is clicked, as it is for kidney 1, then the contribution of the kidney 1 plan is fixed at the value shown, in this case 0.22. The values shown in the text boxes for each plan constitute the s vector in the text.