Figure 3.

Computed tomography–guided stereotactic adaptive radiation therapy and nonadaptive target metrics. Coverage metrics are demonstrated for both the scheduled (P_I, red) and adapted (P_A, green) plans for each of the 7 patients on this clinical imaging study. Metrics presented from right to left per patients are PTV V100%, PTV V50Gy, GTV V100%, and GTV V50Gy. Patients one through 6 had intraparenchymal tumors, and patient 7 had a subcarinal lymph node. The specific data for each coverage metric can be reviewed in Table 1. Abbreviations: GTV = gross tumor volume; PTV = planning target volume.