中国物理B ›› 2019, Vol. 28 ›› Issue (10): 108702-108702.doi: 10.1088/1674-1056/ab3f1d

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Theory and method of dual-energy x-ray grating phase-contrast imaging

Feng Rong(荣锋), Yan Gao(高艳), Cui-Juan Guo(郭翠娟), Wei Xu(徐微), Wei Xu(徐伟)   

  1. 1 College of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tianjin Polytechnic University, Tianjin 300387, China
  • 收稿日期:2019-05-19 修回日期:2019-08-08 出版日期:2019-10-05 发布日期:2019-10-05
  • 通讯作者: Feng Rong E-mail:shusheng677@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61405144), the Natural Science Foundation of Tianjin, China (Grant No. 15JCQNJC42100), and the Technology Special Commissioner Project of Tianjin, China (Grant Nos. 16JCTPJC47200 and 16JCTPJC48100).

Theory and method of dual-energy x-ray grating phase-contrast imaging

Feng Rong(荣锋)1,2, Yan Gao(高艳)1, Cui-Juan Guo(郭翠娟)1, Wei Xu(徐微)1, Wei Xu(徐伟)1   

  1. 1 College of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China;
    2 Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2019-05-19 Revised:2019-08-08 Online:2019-10-05 Published:2019-10-05
  • Contact: Feng Rong E-mail:shusheng677@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61405144), the Natural Science Foundation of Tianjin, China (Grant No. 15JCQNJC42100), and the Technology Special Commissioner Project of Tianjin, China (Grant Nos. 16JCTPJC47200 and 16JCTPJC48100).

摘要: The principle of dual-energy x-ray grating phase-contrast imaging (DEPCI) is clarified by using the theory of x-ray interference and Fresnel diffraction. A new method of retrieving phase from the two interferograms is proposed for DEPCI, and its feasibility is verified via simulation. Finally, the proposed method applied to DEPCI experiment demonstrates the effectiveness of the method. This paper lays the theoretical foundation for performance optimization of DEPCI and the further integration of DEPCI and computed tomography.

关键词: x-ray imaging, dual-energy analyzer grating, phase retrieval

Abstract: The principle of dual-energy x-ray grating phase-contrast imaging (DEPCI) is clarified by using the theory of x-ray interference and Fresnel diffraction. A new method of retrieving phase from the two interferograms is proposed for DEPCI, and its feasibility is verified via simulation. Finally, the proposed method applied to DEPCI experiment demonstrates the effectiveness of the method. This paper lays the theoretical foundation for performance optimization of DEPCI and the further integration of DEPCI and computed tomography.

Key words: x-ray imaging, dual-energy analyzer grating, phase retrieval

中图分类号:  (X-ray imaging)

  • 87.59.-e
42.79.Dj (Gratings) 42.30.Rx (Phase retrieval)