| An ART iterative reconstruction algorithm for computed tomography of diffraction enhanced imaging |
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| 作者姓名： | 王振天 张丽 黄志峰 康克军 陈志强 方侨光 朱佩平 |
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| 作者单位： | 1 Department of Engineering Physics, Tsinghua University, Beijing 100084, China;2 Key Laboratory of Particle & Radiation Imaging (Tsinghua University),;Ministry of Education, Beijing 100084, China;3 Beijing Synchrotron Radiation Facility, Institute of High Energy Physics,;Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | Supported by National Natural Science Foundation of China （10875066） and Program ibr New Century Excellent Talents m University （NCET-05-0060） The experiments were carried out at the BSRF, so the authors appreciate the support of the BSRF. |
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| 摘 要： | X-ray diffraction enhanced imaging （DEI） has extremely high sensitivity for weakly absorbing low- Z samples in medical and biological fields. In this paper, we propose an Algebra Reconstruction Technique （ART） iterative reconstruction algorithm for computed tomography of diffraction enhanced imaging （DEI-CT）. An Ordered Subsets （OS） technique is used to accelerate the ART reconstruction. Few-view reconstruction is also studied, and a partial differential equation （PDE） type filter which has the ability of edge-preserving and denoising is used to improve the image quality and eliminate the artifacts. The proposed algorithm is validated with both the numerical simulations and the experiment at the Beijing synchrotron radiation facility （BSRF）.
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| 关 键 词： | 计算机断层扫描 迭代重建算法 X射线衍射 成像 艺术 北京同步辐射装置 代数重建技术 偏微分方程 |
| 收稿时间： | 2008-12-17 |
| 修稿时间： | 2009-4-2 |
An ART iterative reconstruction algorithm for computed tomography of diffraction enhanced imaging |
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| Affiliation: | [1]Department of Engineering Physics, Tsinghua University, Beijing 100084, China; [2]Key Laboratory of Particle &: Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China; [3]Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | diffraction enhanced imaging, algebra reconstruction technique, phase contrast imaging |
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| Keywords: | diffraction enhanced imaging algebra reconstruction technique phase contrast imaging |
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