放射治疗是鼻咽癌最主要的治疗方法 ,其常规分割放射治疗的五年生存率一直徘徊在 5 0 %左右 ,2 0世纪 80年代以来 ,临床上出现了加速超分割放射治疗等一些非常规分割放射治疗的方法。根据头颈部肿瘤细胞在放疗后 3～ 4周开始出现加速再增殖的理论 ,我们应用后程加速超分割放射 Radiation therapy is the most important treatment for nasopharyngeal carcinoma. The five-year survival rate of conventional fractionated radiotherapy has been hovering around 50%. Since the 1980s, there have been some unconventional radiological treatments such as accelerated hyperfractionation radiotherapy Method of segmentation radiotherapy. According to the head and neck tumor cells 3 to 4 weeks after radiotherapy began to accelerate the theory of repopulation, we use the latter to accelerate hyperfractionation