Study of osem with different subsets in grating-based x-ray differential phase-contrast imaging
文献类型：期刊论文
| 作者 | Zhang, Kai1,7; Hong, Youli1; Zhu, Peiping1; Yuan, Qingxi1; Huang, Wanxia1; Wang, Zhili1; Chu, Shengqi1,7; McDonald, Samuel A.3,4; Marone, Federica3; Stampanoni, Marco3,5,6 |
| 刊名 | Analytical and bioanalytical chemistry
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 401期号:3页码:837-844 |
| 关键词 | X-ray phase-contrast imaging Computed tomography Phase retrieval Osem |
| ISSN号 | 1618-2642 |
| DOI | 10.1007/s00216-011-5080-6 |
| 通讯作者 | Zhu, peiping(zhupp@ihep.ac.cn) |
| 英文摘要 | Impressive developments in x-ray imaging are associated with x-ray phase contrast computed tomography based on grating interferometry, a technique that provides increased contrast compared with conventional absorption-based imaging. a new "single-step" method capable of separating phase information from other contributions has been recently proposed. this approach not only simplifies data-acquisition procedures, but, compared with the existing phase step approach, significantly reduces the dose delivered to a sample. however, the image reconstruction procedure is more demanding than for traditional methods and new algorithms have to be developed to take advantage of the "single-step" method. in the work discussed in this paper, a fast iterative image reconstruction method named osem (ordered subsets expectation maximization) was applied to experimental data to evaluate its performance and range of applicability. the osem algorithm with different subsets was also characterized by comparison of reconstruction image quality and convergence speed. computer simulations and experimental results confirm the reliability of this new algorithm for phase-contrast computed tomography applications. compared with the traditional filtered back projection algorithm, in particular in the presence of a noisy acquisition, it furnishes better images at a higher spatial resolution and with lower noise. we emphasize that the method is highly compatible with future x-ray phase contrast imaging clinical applications. |
| WOS关键词 | COMPUTED-TOMOGRAPHY ; RECONSTRUCTION ; INTERFEROMETER ; PROJECTIONS ; REFRACTION |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
| WOS类目 | Biochemical Research Methods ; Chemistry, Analytical |
| 语种 | 英语 |
| WOS记录号 | WOS:000292970200008 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176180 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zhu, Peiping |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Sci & Technol China, NSRL, Hefei 230026, Peoples R China 3.Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland 4.Univ Lausanne, Sch Med, Dept Radiol, Lausanne, Switzerland 5.Univ Zurich, Inst Biomed Engn, CH-8092 Zurich, Switzerland 6.Swiss Fed Inst Technol, CH-8092 Zurich, Switzerland 7.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Kai,Hong, Youli,Zhu, Peiping,et al. Study of osem with different subsets in grating-based x-ray differential phase-contrast imaging[J]. Analytical and bioanalytical chemistry,2011,401(3):837-844. |
| APA | Zhang, Kai.,Hong, Youli.,Zhu, Peiping.,Yuan, Qingxi.,Huang, Wanxia.,...&Wu, Ziyu.(2011).Study of osem with different subsets in grating-based x-ray differential phase-contrast imaging.Analytical and bioanalytical chemistry,401(3),837-844. |
| MLA | Zhang, Kai,et al."Study of osem with different subsets in grating-based x-ray differential phase-contrast imaging".Analytical and bioanalytical chemistry 401.3(2011):837-844. |
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来源：高能物理研究所
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