放疗在肿瘤临床治疗中占有举足轻重的地位,是继手术之后的第二大治疗手段,约70%的患者在治疗过程中需要放疗。对早期头颈部癌和鼻咽癌、喉癌、口咽癌、下咽癌等,单独放疗可取得和根治术同样的效果,同时又完整地保存了患者的组织、器官解剖结构的完整性,提高了患者的生活质量。 Radiation therapy plays a decisive role in the clinical treatment of tumors. It is the second largest treatment after surgery and about 70% of patients require radiotherapy during the treatment. For early head and neck cancer and nasopharyngeal cancer, laryngeal cancer, oropharyngeal cancer, hypopharyngeal cancer, radiotherapy alone can be obtained and radical surgery the same effect, but also completely preserved the patient’s tissue, the integrity of the anatomy of the organ , Improve the quality of life of patients.