| Performance evaluation of the backprojection filtered （BPF） algorithm in circular fan-beam and cone-beam CT |
| |
| 引用本文： | LI Liang CHEN Zhi-Qiang ZHANG Li KANG Ke-Jun. Performance evaluation of the backprojection filtered （BPF） algorithm in circular fan-beam and cone-beam CT[J]. 核技术(英文版), 2006, 17(2): 113-117. DOI: 10.1016/S1001-8042(06)60022-5 |
| |
| 作者姓名： | LI Liang CHEN Zhi-Qiang ZHANG Li KANG Ke-Jun |
| |
| 作者单位： | Department of Engineering Physics, Tsinghua University, Beijing 100084, China |
| |
| 摘 要： | In this article we introduce an exact backprojection filtered （BPF） type reconstruction algorithm for cone-beam scans based on Zou and Pan＇s work. The algorithm can reconstruct images using only the projection data passing through the parallel PI-line segments in reduced scans. Computer simulations and practical experiments are carded out to evaluate this algorithm. The BPF algorithm has a higher computational efficiency than the famous FDK algorithm. The BPF algorithm is evaluated using the practical CT projection data on a 450 keV X-ray CT system with a flat-panel detector （FPD）. From the practical experiments, we get the spatial resolution of this CT system. The algorithm could achieve the spatial resolution of 2.4 lp/mm and satisfies the practical applications in industrial CT inspection.
|
| 关 键 词： | 反向发射滤波器算法 BPF Hilbert转换 算法理论 |
| 收稿时间： | 2005-09-08 |
Performance evaluation of the backprojection filtered (BPF) algorithm in circular fan-beam and cone-beam CT |
| |
| LI Liang,CHEN Zhi-Qiang,ZHANG Li,KANG Ke-Jun. Performance evaluation of the backprojection filtered (BPF) algorithm in circular fan-beam and cone-beam CT[J]. , 2006, 17(2): 113-117. DOI: 10.1016/S1001-8042(06)60022-5 |
| |
| Authors: | LI Liang CHEN Zhi-Qiang ZHANG Li KANG Ke-Jun |
| |
| Affiliation: | 1. College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;2. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | In this article we introduce an exact backprojecfion filtered (BPF) type reconstruction algorithm for cone-beam scans based on Zou and Pan's work. The algorithm can reconstruct images using only the projection data passing through the parallel PI-line segments in reduced scans. Computer simulations and practical experiments are carried out to evaluate this algorithm. The BPF algorithm has a higher computational efficiency than the famous FDK algorithm. The BPF algorithm is evaluated using the practical CT projection data on a 450 keV X-ray CT system with a flat-panel detector (FPD). From the practical experiments, we get the spatial resolution of this CT system. The algorithm could achieve the spatial resolution of 2.4 lp/mm and satisfies the practical applications in industrial CT inspection. |
| |
| Keywords: | Cone-beam PI-line Backprojection filtered (BPF) algorithm Hilbert transform |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
