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Noise analysis of grating-based x-ray differential phase-contrast imaging with angular signal radiography |
| Wali Faiz1, Yuan Bao(鲍园)2, Kun Gao(高昆)1, Zhao Wu(吴朝)1, Chen-Xi Wei(卫晨希)1, Gui-Bin Zan(昝贵彬)1, Pei-Ping Zhu(朱佩平)3, Yang-Chao Tian(田扬超)1 |
1 National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;
2 Shanghai United Imaging Healthcare Co. Ltd., Shanghai 201807, China;
3 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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Abstract X-ray phase-contrast imaging is one of the novel techniques, and has potential to enhance image quality and provide the details of inner structures nondestructively. In this work, we investigate quantitatively signal-to-noise ratio (SNR) of grating-based x-ray phase contrast imaging (GBPCI) system by employing angular signal radiography (ASR). Moreover, photon statistics and mechanical error that is a major source of noise are investigated in detail. Results show the dependence of SNR on the system parameters and the effects on the extracted absorption, refraction and scattering images. Our conclusions can be used to optimize the system design for upcoming practical applications in the areas such as material science and biomedical imaging.
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Received: 17 November 2016
Revised: 06 January 2017
Accepted manuscript online:
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PACS:
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06.30.Bp
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(Spatial dimensions)
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43.60.Cg
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(Statistical properties of signals and noise)
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42.50.Wk
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(Mechanical effects of light on material media, microstructures and particles)
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37.10.Vz
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(Mechanical effects of light on atoms, molecules, and ions)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11535015, 11305173, and 11375225). |
Corresponding Authors:
Kun Gao, Pei-Ping Zhu, Yang-Chao Tian
E-mail: gaokun@ustc.edu.cn;zhupp@ihep.ac.cn;ychtian@ustc.edu.cn
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Cite this article:
Wali Faiz, Yuan Bao(鲍园), Kun Gao(高昆), Zhao Wu(吴朝), Chen-Xi Wei(卫晨希), Gui-Bin Zan(昝贵彬), Pei-Ping Zhu(朱佩平), Yang-Chao Tian(田扬超) Noise analysis of grating-based x-ray differential phase-contrast imaging with angular signal radiography 2017 Chin. Phys. B 26 040602
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