Fig. 5.

Dose-volume histograms. Dose-volume histograms (DVHs) for the CTV for four exemplary ‘outlier’ cases as judged by Observer 3. Dose distributions are based on the online (RTTs-contour based) dose plan as delivered to the patient. DVHs are given for the RTTs CTV contour (solid blue line), the adapted CTV contour by Observer 1 (dashed yellow line), and the adapted CTV contour by Observer 2 (dotted orange line). RTTs = Radiation therapists. Obs = Observer.