放射治疗利用放射线使肿瘤细胞生长的关键部位DNA链断裂,致使肿瘤细胞减少或停止繁殖,以杀伤或杀死癌细胞。目前,有60%￣70%的癌症病人在整个肿瘤治疗过程中需要接受放射治疗。在肿瘤早期单独使用放射治疗就可成功消灭肿瘤细胞,使患者痊愈;在肿瘤中期放射治疗结合其他疗法(综合 Radiation therapy uses radiation to break the DNA strand at the key site of tumor cell growth, causing the tumor cells to reduce or stop reproducing to kill or kill the cancer cells. At present, 60% to 70% of cancer patients need radiation therapy during the entire tumor treatment. The use of radiotherapy alone in the early stage of the tumor can successfully eliminate the tumor cells and enable the patient to heal; In the mid-stage tumor radiotherapy combined with other therapies (integrated