中国物理B ›› 2017, Vol. 26 ›› Issue (4): 40602-040602.doi: 10.1088/1674-1056/26/4/040602

• GENERAL • 上一篇    下一篇

Noise analysis of grating-based x-ray differential phase-contrast imaging with angular signal radiography

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)   

  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
  • 收稿日期:2016-11-17 修回日期:2017-01-06 出版日期:2017-04-05 发布日期:2017-04-05
  • 通讯作者: Kun Gao, Pei-Ping Zhu, Yang-Chao Tian E-mail:gaokun@ustc.edu.cn;zhupp@ihep.ac.cn;ychtian@ustc.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11535015, 11305173, and 11375225).

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. 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
  • Received:2016-11-17 Revised:2017-01-06 Online:2017-04-05 Published:2017-04-05
  • Contact: Kun Gao, Pei-Ping Zhu, Yang-Chao Tian E-mail:gaokun@ustc.edu.cn;zhupp@ihep.ac.cn;ychtian@ustc.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11535015, 11305173, and 11375225).

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摘要：

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.

关键词: angular signal radiography, signal-to-noise ratio, photon statistical noise, mechanical error

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.

Key words: angular signal radiography, signal-to-noise ratio, photon statistical noise, mechanical error

中图分类号:  (Spatial dimensions)

  • 06.30.Bp
43.60.Cg (Statistical properties of signals and noise) 42.50.Wk (Mechanical effects of light on material media, microstructures and particles) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)