FIGURE 1.

DVH overview of selected target volumes along with OARs for the clinical (solid lines) and modified (dashed lines) plan for the four treatment sites under investigation: A prostate plan without locoregional lymphatic drainage (a–c), a prostate plan with locoregional lymphatic drainage (d), a head and neck plan (e), and a rectum plan (f). The displayed errors resemble systematic MU miscalibration (a), different OAR protection (b), and altered mean dose to the high‐risk target structure (c–f).