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研究不同放射因素与NPC放疗后颞叶坏死(TLN)的相关性及不同的生物相等效模式对判断预后的准确性,作者对1976～1985年连续1008例采用不同分割方案进行根治性放疗的T_1期NPC病例进行分析。男:女=2.1:1,年龄18～84岁(平均46岁)。92％的病人完全随访,平均随访6.9年(0.1～17.5年),856例(85％)随访2年以上。病人特征为:①T_1期鳞癌,无远处转移证据,单纯放射治疗。②用4.5～6MV光子,标准3野照射,射野包括亚临床灶,咽后间隙第1站淋巴结。治疗野上缘在前床突上5mm。③给予根治剂量,肿瘤在100％等剂量水平(误
To study the correlation between different radiological factors and temporal lobe necrosis (TLN) after radiotherapy and the accuracy of different bioequivalent modes in judging the prognosis. The author studied the effect of different radiotherapy methods on the T_1 of consecutive 1008 patients who underwent radical radiotherapy from 1976 to 1985 NPC cases were analyzed. Male: Female = 2.1: 1, aged 18 to 84 (average 46 years). Ninety-two percent of patients were followed up for an average of 6.9 years (0.1-1.5 years) and 856 (85%) were followed up for more than 2 years. Patient characteristics: ① T_1 squamous cell carcinoma, no evidence of distant metastasis, radiation therapy alone. ② with 4.5 ~ 6MV photons, standard 3 field irradiation, radiation field, including sub-clinical lesions, the first station lymph nodes after pharyngeal space. Treatment of the wild edge of the bed in front of 5mm. ③ give the radical dose, the tumor at 100% dose level (error