Refraction angle extracting strategy for fan-beam differential phase contrast CT
文献类型：期刊论文
| 作者 | Ye, Renzhen1; Tang, Yi2; Lu, Xiaoqiang3
|
| 刊名 | neurocomputing
 |
| 出版日期 | 2014-10-02 |
| 卷号 | 141期号:si页码:160-169 |
| 关键词 | Phase-contrast image X-ray imaging Fan-beam CT PI-line Gratings interferometer |
| ISSN号 | 0925-2312 |
| 英文摘要 | in this paper, the fan-beam differential phase contrast computed tomography (dpc-ct) reconstruction method is studied. we first present a new vision of how to implement the reverse-projection (rp) method to extract the refraction-angle data efficiently in fan-beam geometry, and then provide a katsevich-type formula for fan-beam dpc-ct reconstruction. the proposed method has two key properties. first, it is essentially a filtered back projection (fbp) reconstruction formula. second, it can deal with incomplete data sets. the main contributions of this paper lie in the following three aspects: first, the physical principle of the bent-grating based fan-beam dpc imaging is discussed and the rp-method is extended to the fan-beam case. second, an implementation strategy of katsevich algorithm for fan-beam dpc-ct is proposed. third, a semi-quantitative research on the influence of the approximation errors introduced by the rp-method is carried out by using several numerical simulations. it should be pointed out that the rp-method will certainly introduce some errors. the effect of these errors on our reconstruction algorithm is discussed by several numerical simulations. (c) 2014 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | computer science, artificial intelligence |
| 研究领域[WOS] | computer science |
| 关键词[WOS] | truncated hilbert transform ; hard x-rays ; image-reconstruction ; computed-tomography ; grating interferometer ; inversion algorithm ; minimum data ; retrieval |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000338403800018 |
| 公开日期 | 2015-03-18 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/22396]  |
| 专题 | 西安光学精密机械研究所_光学影像学习与分析中心 |
| 作者单位 | 1.Huazhong Agr Univ, Coll Sci, Wuhan 430074, Hubei, Peoples R China 2.Yunnan Univ Nationalities, Sch Math & Comp Sci, Kunming 650500, Yunnan, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Ctr OPT IMagery Anal & Learning, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Renzhen,Tang, Yi,Lu, Xiaoqiang. Refraction angle extracting strategy for fan-beam differential phase contrast CT[J]. neurocomputing,2014,141(si):160-169. |
| APA | Ye, Renzhen,Tang, Yi,&Lu, Xiaoqiang.(2014).Refraction angle extracting strategy for fan-beam differential phase contrast CT.neurocomputing,141(si),160-169. |
| MLA | Ye, Renzhen,et al."Refraction angle extracting strategy for fan-beam differential phase contrast CT".neurocomputing 141.si(2014):160-169. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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