CAJ | 학술논문

目的探索一种能更好地解决鼻咽癌常规放疗中射野之间衔接问题的新方法.方法使用三维计划系统模拟鼻咽癌2D-适形放疗(CRT)或3D-CRT治疗中电子线L形野照射技术与常规放疗颈后电子线野照射技术的布野方法,进行剂量学分布比较.结果电子线L形野照射技术与颈后电子线野照射技术的靶区剂量超过6000 cGy的包绕体积都达到95％以上,满足临床上肿瘤治疗的剂量需要,但颈后电子线野照射技术出现明显的剂量热点,最高剂量可达8900 cGy,电子线L形野照射技术的最高剂量达7200 cGy.电子线L形野照射技术的喉部高剂量范围比颈后电子线野照射技术小,前者喉部剂量超过6500 cGy的体积为19.64％,后者为31.95％.结论电子线L形野照射技术在照射野之间衔接和剂量分布方面都具有较好的优势,值得临床推广应用.
목적 탐색일충능경호지해결비인암상규방료중사야지간함접문제적신방법.방법 사용삼유계화계통모의비인암2D-괄형방료(CRT)혹3D-CRT치료중전자선L형야조사기술여상규방료경후전자선야조사기술적포야방법,진행제량학분포비교.결과 전자선L형야조사기술여경후전자선야조사기술적파구제량초과6000 cGy적포요체적도체도95％이상,만족림상상종류치료적제량수요,단경후전자선야조사기술출현명현적제량열점,최고제량가체8900 cGy,전자선L형야조사기술적최고제량체7200 cGy.전자선L형야조사기술적후부고제량범위비경후전자선야조사기술소,전자후부제량초과6500 cGy적체적위19.64％,후자위31.95％.결론 전자선L형야조사기술재조사야지간함접화제량분포방면도구유교호적우세,치득림상추엄응용.
Objective To introduce a new way to solve the problem of field-field junction in the traditional radiotherapy of the nasopharyngeal carcinoma better.Methods Using the 3-dimentional planning system,the dose distribution of traditional radiotherapy and the electronic beam irradiation technology of L shape field for nasopharyngeal carcinoma in 2D-or 3D-CRT could be gotten.Results The dose coverage of V95 of the gross tumor volume(GTV)satisfied the clinical requirements.The highest dose in the electronic beam irradiation of L shape field was 7200 cGy,while it was 8900 cGy in the traditional way.The volume of dose that over 6500 cGy of throat was 19.64 ％ in the former,the latter was 31.95 ％.Conclusion The electronic beam irradiation technology of L shape field is better than the traditional radiotherapy in field-field junction and in dose distribution.Since that,the electronic beam irradiation technology of L shape field is worth of application for the treatment of nasopharyngeal carcinoma.