This technology is to improve the radiation dose distribution in the target so that the high dose area is more conformal for the three - dimentional shape of the target and the radiation dose in the normal organs and tissue around the target decreases 目的是改善靶区的剂量分布,使得高剂量分布区与病变(靶区)三维形状的适合度比常规放疗大有提高,减少靶区周围正常器官和组织的照射量。