J Med Phys Close
 

Figure 3: Point gamma evaluation for an open 10 cm × 10 cm and 5 cm × 5 cm field size at ±3 cm separation. Beams were placed anteriorly at the mediastinum for lung patient 1. The lower gamma value is indicated in lung area

Figure 3: Point gamma evaluation for an open 10 cm × 10 cm and 5 cm × 5 cm field size at ±3 cm separation. Beams were placed anteriorly at the mediastinum for lung patient 1. The lower gamma value is indicated in lung area