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自1979年作者对晚期头颈部肿瘤开始用一日二次放疗,方法为1.6Gy/次,二次最少间隔4小时,每周治疗5天,第一段治疗12天,38.4Gy,体息2周使急性放射反应和症状减轻,而后开始缩野治疗,二段总照射量为64Gy/6w,脊髓剂量限制在38.4Gy/2.5w。临床分期按AJC分期系统。106例为一日二次治疗(b.i.d),79例为每日一次治疗(q.d)。结果表明,b.i.d组3年实际局部控制率为76％,q.d组为50％(P=0.001)其中T_1、T_2
Since 1979, the authors started secondary radiotherapy for advanced head and neck neoplasms at a rate of 1.6 Gy/time, with a minimum interval of 4 hours at a time, 5 days per week, and 12 days at the first treatment, 38.4 Gy. The acute radiation reaction and symptoms were relieved in 2 weeks, and then contraction therapy was started. The total irradiation dose in the second stage was 64 Gy/6w, and the dose of spinal cord was limited to 38.4 Gy/2.5w. Clinical staging is based on the AJC staging system. Sixty-six cases were treated on the first day (b.i.d) and 79 cases were treated on a daily basis (q.d). The results showed that the actual local control rate in the b.i.d group was 76% for 3 years and 50% for the q.d group (P=0.001). Among them, T_1, T_2