| 基于二分法的CT投影快速仿真 |
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| 引用本文： | 李斌,张耀军,朱佩平,李保磊,莫阳.基于二分法的CT投影快速仿真[J].CT理论与应用研究,2014(1):115-122. |
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| 作者姓名： | 李斌 张耀军 朱佩平 李保磊 莫阳 |
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| 作者单位： | [1]公安部第一研究所,北京100048 [2]中科院高能物理研究所,北京100049 |
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| 基金项目： | 国家基本科研业务费专项项目（A13005）. |
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| 摘 要： | 投影仿真是CT仿真研究的基础。本文基于二分法原理，研究了一种CT投影快速仿真方法，并对仿真过程进行了优化。针对由凸物体组成的待扫描体，可实现任意轨迹的扫描，投影仿真精度可无限逼近于解析投影精度。数值仿真实验验证了本文方法的有效性。
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| 关 键 词： | 二分法 cT 投影仿真 |
A Fast Simulation Method for CT Projection Based on Bisection |
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| LI Bin,ZHANG Yao-jun,ZHU Pei-ping,LI Bao-lei,MO Yang.A Fast Simulation Method for CT Projection Based on Bisection[J].Computerized Tomography Theory and Applications,2014(1):115-122. |
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| Authors: | LI Bin ZHANG Yao-jun ZHU Pei-ping LI Bao-lei MO Yang |
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| Institution: | 1.The First Research Institute of the Ministry of Public Security of ER.C, Beijing 100048, China 2.Institute of High Energy Physics Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | Projection simulation is the basis of CT simulation research. A fast simulation method for CT projection based on bisection was proposed in this paper, and then the simulation process was optimized. As long as a scanned object could be decomposed to individual convex items, arbitrary scanning trajectory could be used to simulate projection based on our method, and the projection accuracy could be infinitely close to theoretical projection accuracy. Numerical simulation results verify the effectiveness of our method. |
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| Keywords: | bisection CT projection simulation |
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