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| Improving the efficiency of small-angle x-ray scattering computed tomography using the OSEM algorithm | |
| Hu, T; Wang, YD; Du, GH; Wang, YZ; Hua, WQ; Deng, BA; Xie, HL; Bian, FG; Xiao, TQ | |
| 2017 | |
| Source Publication | APPLIED OPTICS
 |
| ISSN | 1559-128X |
| Volume | 56Issue:30Pages:8326-8334 |
| Subtype | 期刊论文 |
| Abstract | 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 |
| Keyword | Ordered-subsets Image-reconstruction Bone Nanostructure Brain Ct |
| DOI | 10.1364/AO.56.008326 |
| Indexed By | SCI |
| WOS Keyword | ORDERED-SUBSETS ; IMAGE-RECONSTRUCTION ; BONE ; NANOSTRUCTURE ; BRAIN ; CT |
| Language | 英语 |
| WOS ID | WOS:000413345300004 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/28690 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation 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. |
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| Improving the effici（1904KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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