| 基于动态模板匹配技术的放疗摆位误差测量 |
| |
| 引用本文： | 陶声祥,吴宜灿,张江辉.基于动态模板匹配技术的放疗摆位误差测量[J].中国医学影像技术,2005,21(12):1926-1929. |
| |
| 作者姓名： | 陶声祥 吴宜灿 张江辉 |
| |
| 作者单位： | 1. 中国科学院等离子体物理研究所,安徽,合肥,230031
2. 解放军炮兵学院,安徽,合肥,230031 |
| |
| 摘 要： | 本文考虑到病人在放射治疗过程中身体发生变形而使得基于固定模板匹配方法测量重复摆位误差精度降低的问题,提出了基于动态模板匹配的放疗病人重复摆位方法.该方法是对基于CT重建数字射线图像(DRR)作为模板进行匹配的重复摆位技术的改进,将能反映病人体态变化的视频重建三维体表模型作为匹配的模板进行摆位误差的计算.理论研究和实际检验表明,采用动态视频模板匹配的摆位方法,可以在保证摆位精度的同时消除因病人身体变形带来的不利影响.
|
| 关 键 词： | 体态变形 固定模板 动态模板 三维体表模型 匹配 重复摆位 |
| 文章编号： | 1003-3289（2005）12-1926-04 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2005-08-01 |
Positioning error measurement in radiotherapy based on dynamic template matching technique |
| |
| TAO Sheng-xiang,WU Yi-can and ZHANG Jiang-hui.Positioning error measurement in radiotherapy based on dynamic template matching technique[J].Chinese Journal of Medical Imaging Technology,2005,21(12):1926-1929. |
| |
| Authors: | TAO Sheng-xiang WU Yi-can and ZHANG Jiang-hui |
| |
| Institution: | 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China; 2. ArtilleryAcademy of PLA, Hefei 230031, China |
| |
| Abstract: | The decrease of accuracy in patients' repeated positioning in radiotherapy due to body's transformation is considered in this paper. It brings forward a new patients' repeated positioning technique based on dynamic template matching method. And it is an optimization of the matching method based on the CT digitally reconstructed radiograph (DRR), which uses the video reconstructed 3D surface model that can reflect the body's transformation as the matching template instead of DRR. This method is studied in theory and testified in practice, and it can not only guarantee the positioning accuracy but also eliminate the adverse influence brought by body's transformation. |
| |
| Keywords: | Body's transformation Fixed template Dynamic template Three-dimensional surface model Matching method Repeated positioning |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《中国医学影像技术》浏览原始摘要信息 |
| 点击此处可从《中国医学影像技术》下载免费的PDF全文 |
