基本信息来源于合作网站,原文需代理用户跳转至来源网站获取       
摘要:
Introduction: The aim of this study is to dosimetrically compare 3D CRT, IMRT, and VMAT techniques that employ coplanar and non-coplanar beams for the SBRT of lung tumors. Methods and Materials: Nine (n = 9) consecutive SBRT lung patients with ten tumor sites who were previously treated at our institution were selected for this study. Six (n = 6) treatment plans were created for each PTV: 1 coplanar and 1 non-coplanar 3D CRT, IMRT, and VMAT such that 98% of PTV received 100% of prescription dose, Rx of 50 Gy in 5 fractions. The data collected from each plan included the conformity index, R50%, and homogeneity index of the target as well as the volume of normal tissue irradiated by 5 Gy, 25 Gy isodose lines, V5 and V20 of total lung, and maximum dose to organs at risk. Beam angles and arc lengths were chosen in order to achieve the lowest total lung V5, V20 and R50% values. Results: According to the observed data, the mean total lung V5 and V20 values were lowest for the non-coplanar VMAT plans, but were not statistically different from the other planning techniques. Conformity values were similar for the IMRT and VMAT plans, and significantly lower than the 3D CRT plans. R50% values were lowest for the VMAT plans and significantly lower than both IMRT and 3D CRT plans in both coplanar and non-coplanar beam arrangements. However, dose homogeneity in the PTV is significantly higher in the IMRT coplanar plans than the corresponding 3D CRT and SmartArc (SA) coplanar plans. Coplanar VMAT plans were able to produce a significant 35.5% reduction in the maximum cord dose than coplanar 3D CRT plans (p-value
内容分析
关键词云
关键词热度
相关文献总数  
(/次)
(/年)
文献信息
篇名 A Comparison between Three-Dimensional Conformal Radiotherapy, Intensity-Modulated Radiotherapy, and Volumetric-Modulated Arc Therapy Techniques for Stereotactic Body Radiotherapy of Lung Tumors
来源期刊 医学物理学、临床工程、放射肿瘤学(英文) 学科 医学
关键词 Lung SBRT VMAT Conformity INDEX HOMOGENEITY INDEX
年,卷(期) 2015,(2) 所属期刊栏目
研究方向 页码范围 104-112
页数 9页 分类号 R73
字数 语种
DOI
五维指标
传播情况
(/次)
(/年)
引文网络
引文网络
二级参考文献  (0)
共引文献  (0)
参考文献  (0)
节点文献
引证文献  (0)
同被引文献  (0)
二级引证文献  (0)
2015(0)
  • 参考文献(0)
  • 二级参考文献(0)
  • 引证文献(0)
  • 二级引证文献(0)
研究主题发展历程
节点文献
Lung
SBRT
VMAT
Conformity
INDEX
HOMOGENEITY
INDEX
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
医学物理学、临床工程、放射肿瘤学(英文)
季刊
2168-5436
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
236
总下载数(次)
0
总被引数(次)
0
论文1v1指导