非共面射野在中心型肺癌调强放疗中的应用  

The Application of Non-coplanar Field in IMRT for Central Lung Cancer

作　　者：杨海燕[1] 王军良[1] 周振山[1] 申戈[1] 吴世凯[1] 

机构地区：[1]军事医学科学院附属解放军307医院放疗科,北京100071

出　　处：《中国医学物理学杂志》2014年第2期4748-4750,共3页Chinese Journal of Medical Physics

摘　　要：目的:探讨非共面射野在中心型肺癌调强放疗中在降低双肺受照剂量、提高靶区剂量方面的优势。方法:选取10例中心型肺癌患者,每例患者分别建立5野调强计划和在5野基础上加一个非共面射野的6野调强计划。比较90%和95%处方剂量包的靶区体积,以及双肺V5、V10、V20、V30。结果:应用非共面射野的调强计划对提高95%处方剂量包的靶区体积有统计学意义,对提高90%处方剂量包的靶区体积无统计学意义。对降低全肺V5、V10、V20、V30有统计学意义。结论:在中心型肺癌调强放疗中,非共面射野的应用于对提高靶区剂量,降低双肺剂量有一定的优势。Objective： Investigate the advantage of the non-coplanar radiation field in central lung cancer IMRT for reducing the dose of lungs and improving dose of target .Methods： Selected ten patients with central lung cancer, Two IMRT plans were de signed for each patient： a five optimization fields plan and the other plan with a non-coplanar field basis on the five fields. Com parison the target volume for 90% and 95% of the prescription dose and the VS, V 10, V20, V30 for the whole lung. Results： the plan with a non-coplanar field improved the target volume for 95% of the prescription dose statistically significant, not for the target volume for 90% of the prescribed dose. The VS,V10, V20, V30 for the whole lung were reduced statistically significant. Conclusions： The central lung cancer IMRT with non-coplanar field dramatically improved the dose of the target,and reduced VS, V10, V20, V30 for the whole lung.

关 键 词：非共面射野 中心型肺癌 全肺 

分 类 号：R815[医药卫生—放射医学]