中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2319-2324.doi: 10.1088/1009-1963/16/8/027

• GENERAL • 上一篇    下一篇

Influence of tube voltage and current on in-line phase contrast imaging using a microfocus x-ray source

李晨, 李政, 禹爱民, 黎成权   

  1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2006-10-17 修回日期:2006-12-21 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10475044).

Influence of tube voltage and current on in-line phase contrast imaging using a microfocus x-ray source

Li Chen(李晨)†, Li Zheng(李政), Yu Ai-Min(禹爱民), and Li Cheng-Quan(黎成权)   

  1. Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  • Received:2006-10-17 Revised:2006-12-21 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10475044).

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摘要： In-line x-ray phase contrast imaging has attracted much attention due to two major advantages: its effectiveness in imaging weakly absorbing materials, and the simplicity of its facilities. In this paper a comprehensive theory based on Wigner distribution developed by Wu and Liu [Med. Phys. 31 2378-2384 (2004)] is reviewed. The influence of x-ray source and detector on the image is discussed. Experiments using a microfocus x-ray source and a CCD detector are conducted, which show the role of two key factors on imaging: the tube voltage and tube current. High tube current and moderate tube voltage are suggested for imaging.

Abstract: In-line x-ray phase contrast imaging has attracted much attention due to two major advantages: its effectiveness in imaging weakly absorbing materials, and the simplicity of its facilities. In this paper a comprehensive theory based on Wigner distribution developed by Wu and Liu [Med. Phys. 31 2378-2384 (2004)] is reviewed. The influence of x-ray source and detector on the image is discussed. Experiments using a microfocus x-ray source and a CCD detector are conducted, which show the role of two key factors on imaging: the tube voltage and tube current. High tube current and moderate tube voltage are suggested for imaging.

Key words: x-ray, in-line phase contrast imaging, Wigner distribution

中图分类号:  (Fourier optics)

  • 42.30.Kq
07.85.Fv (X- and γ-ray sources, mirrors, gratings, and detectors)