Principle of diffraction enhanced imaging (DEI) and computed tomography based on DEI method

Pei-Ping ZHU; Wan-Xia HUANG; Qing-Xi YUAN; Jian YU; Jun-Yue WANG; Xin ZHENG; Hang SHU; Bo CHEN; Yi-Jin LIU; En-Rong LI; Zi-Yu WU

doi:10.1016/S1001-8042(07)60004-9

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Principle of diffraction enhanced imaging (DEI) and computed tomography based on DEI method

SYNCHROTRON TECHNOLOGY AND APPLICATIONS | Updated：2021-01-29

- Principle of diffraction enhanced imaging (DEI) and computed tomography based on DEI method
- Nuclear Science and Techniques Vol. 17, Issue 6, (2006)
- Affiliations：
  
  1.Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
  2.Electronic Institute of Dalian University of Technology, Dalian 116023, China
- Author bio：
  
  Email: zhupp@mail.ihep.ac.cn.
- Funds：
- DOI：10.1016/S1001-8042(07)60004-9
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Cite this article
Pei-Ping ZHU, Wan-Xia HUANG, Qing-Xi YUAN, et al. Principle of diffraction enhanced imaging (DEI) and computed tomography based on DEI method. [J]. Nuclear Science and Techniques 17(6):342-353(2006)
DOI：

Pei-Ping ZHU, Wan-Xia HUANG, Qing-Xi YUAN, et al. Principle of diffraction enhanced imaging (DEI) and computed tomography based on DEI method. [J]. Nuclear Science and Techniques 17(6):342-353(2006) DOI： 10.1016/S1001-8042(07)60004-9.

摘要

Abstract

In the first part of this article a more general DEI equation was derived using simple concepts. Not only does the new DEI equation explain all the problems that can be done by the DEI equation proposed by Chapman, but also explains the problem that can not be explained with the old DEI equation, such as the noise background caused by the small angle scattering reflected by the analyzer. In the second part, a DEI-PI-CT formula has been proposed and the contour contrast caused by the extinction of refraction beam has been qualitatively explained, and then based on the work of Ando's group two formulae of refraction CT with DEI method has been proposed. Combining one refraction CT formula proposed by Dilmanian with the two refraction CT formulae proposed by us, the whole framework of CT algorithm can be made to reconstruct three components of the gradient of refractive index.

关键词

Keywords

Diffraction enhanced imagingRefraction computed tomographySynchrotron radiation

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University of Chinese Academy of Sciences

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