Improving the efficiency of small-angle x-ray scattering computed tomography using the OSEM algorithm
文献类型：期刊论文
| 作者 | Hu, T; Wang, YD; Du, GH; Wang, YZ; Hua, WQ; Deng, BA; Xie, HL; Bian, FG; Xiao, TQ |
| 刊名 | APPLIED OPTICS
 |
| 出版日期 | 2017 |
| 卷号 | 56期号:30页码:8326-8334 |
| 关键词 | Ordered-subsets Image-reconstruction Bone Nanostructure Brain Ct |
| ISSN号 | 1559-128X |
| DOI | 10.1364/AO.56.008326 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Small-angle x-ray scattering computed tomography (SAXS-CT) is a nondestructive method for the nanostructure analysis of heterogeneous materials. However, the limits of a long data acquisition time and vast amounts of data prevent SAXS-CT from becoming a routine experimental method in the applications of synchrotron radiation. In this study, the ordered subsets expectation maximization (OSEM) algorithm is introduced to improve the efficiency of SAXS-CT. To demonstrate the practicability of this method, a systematic simulation and experiments were carried out. The simulation results on a numerical phantom show that the OSEM-based SAXS-CT can effectively eliminate streaking artifacts and improve the efficiency of data acquisition by at least 3 times compared with the filter backprojection algorithm. By compromising the reconstruction speed and image quality, the optimal reconstruction parameters are also given for the image reconstruction in the OSEM-based SAXS-CT experiments. An experiment on a bamboo sample verified the validity of the proposed method with limited projection data. A further experiment on polyethylene demonstrated that the OSEM-based SAXS-CT is able to reveal the local nanoscale information about the crystalline structure and distributional difference inside the sample. In conclusion, the OSEM-based SAXS-CT can significantly improve experimental efficiency, which may promote SAXS-CT becoming a conventional method. (C) 2017 Optical Society of America |
| WOS关键词 | ORDERED-SUBSETS ; IMAGE-RECONSTRUCTION ; BONE ; NANOSTRUCTURE ; BRAIN ; CT |
| 语种 | 英语 |
| WOS记录号 | WOS:000413345300004 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28690]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Hu, T,Wang, YD,Du, GH,et al. Improving the efficiency of small-angle x-ray scattering computed tomography using the OSEM algorithm[J]. APPLIED OPTICS,2017,56(30):8326-8334. |
| APA | Hu, T.,Wang, YD.,Du, GH.,Wang, YZ.,Hua, WQ.,...&Xiao, TQ.(2017).Improving the efficiency of small-angle x-ray scattering computed tomography using the OSEM algorithm.APPLIED OPTICS,56(30),8326-8334. |
| MLA | Hu, T,et al."Improving the efficiency of small-angle x-ray scattering computed tomography using the OSEM algorithm".APPLIED OPTICS 56.30(2017):8326-8334. |
入库方式： OAI收割
来源：上海应用物理研究所
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