Figure 1
Target coverage versus target volume for a) gross tumor volume (GTV), b) ITV and c) planning target volume (PTV); d) shows GTV coverage versus the ratio of ITV and GTV volume which is indicative of tumor movement. The black markers indicate the original values calculated with pencil beam (PB), while the red and green markers show the recalculated collapsed cone (CCre-calc) patients with central tumors (red) and tumors attached to mediastinum or pleura (green).