| 三维坐标下任意方向的投影变换及反投影重建方法 |
| |
| 引用本文： | 罗建文,王进亮,白净,徐榭. 三维坐标下任意方向的投影变换及反投影重建方法[J]. 北京生物医学工程, 2006, 25(4): 342-345 |
| |
| 作者姓名： | 罗建文 王进亮 白净 徐榭 |
| |
| 作者单位： | 清华大学生物医学工程系,北京,100084;清华大学生物医学工程系,北京,100084;中国人民解放军总医院器械处,北京,100853;美国伦斯利尔理工学院核子工程与工程物理研究组,美国,纽约,12180 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 提出一种三维坐标下任意方向的投影变换及反投影重建的方法,并且给出一个基于多个二维投影变换及反投影重建的简单实现方式,计算机仿真实验的结果证明了该方法的可行性.本文提出的三维投影变换及反投影重建,不仅可以应用在放疗计划的设计过程中,也可用在多层CT的成像过程、数字减影等多种三维图像重建中.
|
| 关 键 词： | 三维 投影变换 反投影重建 radon变换 |
| 文章编号： | 1002-3208（2006）04-0342-04 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-03-07 |
A Projection Transformation for any Direction in 3-D Coordinates and the Back-Projection Reconstruction Method |
| |
| LUO Jianwen,WANG Jinliang,BAI Jing,XU Xie. A Projection Transformation for any Direction in 3-D Coordinates and the Back-Projection Reconstruction Method[J]. Beijing Biomedical Engineering, 2006, 25(4): 342-345 |
| |
| Authors: | LUO Jianwen WANG Jinliang BAI Jing XU Xie |
| |
| Affiliation: | 1. Department of Biomedical Engineering, Tsinghua University, Beijing 100084; 2. Department of medical instrument, The Chinese PLA General Hospital, Beijing 100853; 3. Nuclear and Biomedical Engineering Programs, Rensselaer Polytechnic Institute, Troy, NY 12180, USA |
| |
| Abstract: | A method of projection transformation and back-projection reconstruction for any angle in three dimensions (3-D) was presented. Furthermore, a simple implementation based several 2-D projection transformations and back-projection reconstructions was provided. Computer simulation results verified the feasibility of this method. This presented 3-D projection transformation and back-projection reconstruction can be applied not only in the program of radiotherapy treatment planning, but also in some 3-D image reconstruction procedures, e.g., the imaging of multi-slice CT and the 3-D reconstruction of DSA. |
| |
| Keywords: | 3-D projection transformation back-projection reconstruction radon transformation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
