泸州医学院学报Issue(1)：117-119,3.DOI:10.3969/j.issn.1000-2669.2014.01.028
9MeV电子线照射技术治疗乳腺癌术后胸壁靶区的方案比较
Comparison of irradiation plannings on postmastectomy chest wall target with 9 MeV electron beam
杨波 1孙小扬 1庞皓文 1罗惠群 1吴虹1
作者信息
- 1. 泸州医学院附属医院肿瘤科，四川泸州 646000
- 折叠
摘要
Abstract
Objective:To analyze the characteristics of postmastectomy chest wall irradiation with 9 MeV electron beam. Methods:On IMRT phantom, five radiation plannings were designed with 9 MeV electron beam: ①single-field vertllal planning; ②single-field planning with the gantry of 30°;③double-field planning with the gantry of 15° and 43°; ④triple-field planning with the gantry of 15°,30°and 43°; ⑤simulate-arc planning with the gantry from 15° to 43°.Then the dose distribution, lung-V 20, PTV 95%and Dmax were compared. Results: The dose distribution of the single-field veryical planning were cuneate.For the 5 plannings, the lung-V20 were 4172 cGy、4885 cGy、4923 cGy、4911 cGy and 4900 cGy,the PTV95% were:14.23%, 18.00%、17.82%、17.91% and 17.93%,and the Dmax were 6081cGy、6400cGy, 5661 cGy,5620cGy and 5598cGy respectively. Conclusion: Increasing the field number and changing the incidence direction were the effective means to optimize the electron beam radiation planning and the triple-field planning was suitable for the paitent whose chest wall target was both narrow and long around the lung.关键词
乳腺癌术后/电子线照射/模拟拉弧照射Key words
Postmastectomy/Electron beam radiation/Simulate-arc plannin分类
医药卫生引用本文复制引用
杨波,孙小扬,庞皓文,罗惠群,吴虹..9MeV电子线照射技术治疗乳腺癌术后胸壁靶区的方案比较[J].泸州医学院学报,2014,(1):117-119,3.
