协和医学杂志Issue(2)：184-188,5.DOI:10.3969/j.issn.1674-9081.2014.02.012
固定铅门尺寸技术在宫颈癌容积调强计划设计中的应用
Fixed-jaw Technique in Volumetric Modulated Arc Therapy Plan for Cervical Cancer Radiotherapy
庞廷田 1杨波 1刘楠 1刘峡 1邱杰 1张福泉1
作者信息
- 1. 中国医学科学院 北京协和医学院 北京协和医院放射治疗科，北京100730
- 折叠
摘要
Abstract
Objective To summarize the relationship between the transverse dimension of the target volume and the most optimized X jaw size in volumetric modulated arc therapy ( VMAT) plan for cervical cancer radiother-apy.Methods The VMAT plans were made by modifying X jaw size on CT images in 12 postoperative patients with cervical cancer .On each image , the best X jaw size was identified .The relationship between the best X jaw size and the transverse width of planning target volume ( PTV) was determined .Results The change in the trans-verse dimension of the target volume was accompanied with the changes of the optimized X jaw size .The relation-ship between X jaw size (y) and the PTV's transverse width (x) could be expressed as the following equation: y=-0.0033x2 +0.7132x+3.6322.Conclusions There is a relationship between X jaw size and PTV's transverse width, which can be used for the postoperative VMAT plan design in patients with cervical cancer .关键词
宫颈癌/容积调强/固定铅门/剂量学Key words
cervical cancer/volumetric modulated arc therapy/fixed-jaw technique/dosimetry分类
医药卫生引用本文复制引用
庞廷田,杨波,刘楠,刘峡,邱杰,张福泉..固定铅门尺寸技术在宫颈癌容积调强计划设计中的应用[J].协和医学杂志,2014,(2):184-188,5.
