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A new iterative algorithm to reconstruct the refractive index
Liu YJ(刘宜晋); Zhu PP(朱佩平); Chen B(陈彬); Wang JY(王佳怡); Yuan QX(袁清习); Huang WX(黄万霞); Shu H(舒航); Li ER(李恩荣); Liu XS(刘小松); Zhang K(张凯); Wu ZY(吴自玉); Liu, YJ; Zhu, PP; Chen, B; Wang, JY; Yuan, QX; Huang, WX; Shu, H; Li, ER; Liu, XS; Zhang, K; Ming, H; Wu, ZY
2007
发表期刊PHYSICS IN MEDICINE AND BIOLOGY
卷号52期号:12页码:L5-L13
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China ; Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
摘要The latest developments in x-ray imaging are associated with techniques based on the phase contrast. However, the image reconstruction procedures demand significant improvements of the traditional methods, and/or new algorithms have to be introduced to take advantage of the high contrast and sensitivity of the new experimental techniques. In this letter, an improved iterative reconstruction algorithm based on the maximum likelihood expectation maximization technique is presented and discussed in order to reconstruct the distribution of the refractive index from data collected by an analyzer-based imaging setup. The technique considered probes the partial derivative of the refractive index with respect to an axis lying in the meridional plane and perpendicular to the propagation direction. Computer simulations confirm the reliability of the proposed algorithm. In addition, the comparison between an analytical reconstruction algorithm and the iterative method has been also discussed together with the convergent characteristic of this latter algorithm. Finally, we will show how the proposed algorithm may be applied to reconstruct the distribution of the refractive index of an epoxy cylinder containing small air bubbles of about 300 mu of diameter.
文章类型Article
学科领域Engineering; Radiology, Nuclear Medicine & Medical Imaging
DOI10.1088/0031-9155/52/12/L01
研究领域[WOS]Engineering ; Radiology, Nuclear Medicine & Medical Imaging
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语种英语
WOS类目Engineering, Biomedical ; Radiology, Nuclear Medicine & Medical Imaging
WOS记录号WOS:000247047800021
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被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240282
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Liu YJ,Zhu PP,Chen B,et al. A new iterative algorithm to reconstruct the refractive index[J]. PHYSICS IN MEDICINE AND BIOLOGY,2007,52(12):L5-L13.
APA 刘宜晋.,朱佩平.,陈彬.,王佳怡.,袁清习.,...&Wu, ZY.(2007).A new iterative algorithm to reconstruct the refractive index.PHYSICS IN MEDICINE AND BIOLOGY,52(12),L5-L13.
MLA 刘宜晋,et al."A new iterative algorithm to reconstruct the refractive index".PHYSICS IN MEDICINE AND BIOLOGY 52.12(2007):L5-L13.
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