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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 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 |
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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.
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Received: 19 May 2019
Revised: 08 August 2019
Accepted manuscript online:
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Fund: 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). |
Corresponding Authors:
Feng Rong
E-mail: shusheng677@163.com
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Cite this article:
Feng Rong(荣锋), Yan Gao(高艳), Cui-Juan Guo(郭翠娟), Wei Xu(徐微), Wei Xu(徐伟) Theory and method of dual-energy x-ray grating phase-contrast imaging 2019 Chin. Phys. B 28 108702
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