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目的介绍鼻咽癌常规放疗颈部切线野处方剂量计算的简单方法。方法按照射野的一半来计算处方剂量Dm,并实际测量该处方剂量Dm相对应的靶区(肿瘤)剂量DT。结果测量值与预设值相差较小,误差在允许范围内。结论该计算方法准确、可行,可用于鼻咽癌常规放疗颈部切线野处方剂量计算。
Objective To introduce a simple method to calculate the dose of tangential field of neck in routine radiotherapy of nasopharyngeal carcinoma. The method calculates the prescribed dose Dm according to half of the radiation field and actually measures the target dose (tumor) DT corresponding to the prescribed dose Dm. Result The measured value is slightly different from the preset value and the error is within the allowable range. Conclusions This method is accurate and feasible and can be used to calculate the dose of tangential field in the neck of nasopharyngeal carcinoma.