中国物理B ›› 2010, Vol. 19 ›› Issue (7): 70701-070701.doi: 10.1088/1674-1056/19/7/070701

• GENERAL • 上一篇    下一篇

A new method of detecting interferogram in differential phase-contrast imaging system based on special structured x-ray scintillator screen

刘鑫, 郭金川, 牛憨笨   

  1. College of Optoelectronic Engineering, Shenzhen University, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Shenzhen 518060, China
  • 出版日期:2010-07-15 发布日期:2010-07-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60232090 and 10774102), the Science & Technology Project from Shenzhen Government of China (Grant Nos. 2008340 and 200717).

A new method of detecting interferogram in differential phase-contrast imaging system based on special structured x-ray scintillator screen

Liu Xin(刘鑫), Guo Jin-Chuan(郭金川)†, and Niu Han-Ben(牛憨笨)‡   

  1. College of Optoelectronic Engineering, Shenzhen University, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Shenzhen 518060, China
  • Online:2010-07-15 Published:2010-07-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60232090 and 10774102), the Science & Technology Project from Shenzhen Government of China (Grant Nos. 2008340 and 200717).

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摘要： An x-ray scintillator screen with a special structure, functioning as detector and analyser grating, was proposed for collecting the interferogram of differential phase contrast imaging without absorption grating and difficulty of fabrication by a state of the art technique. On the basis of phase grating diffraction, a detecting model of the scintillator screen was built for analysing the phase and absorption information of objects. According to the analysis, a new method of phase retrievals based on two-images and the optimal structure of screen were presented.

Abstract: An x-ray scintillator screen with a special structure, functioning as detector and analyser grating, was proposed for collecting the interferogram of differential phase contrast imaging without absorption grating and difficulty of fabrication by a state of the art technique. On the basis of phase grating diffraction, a detecting model of the scintillator screen was built for analysing the phase and absorption information of objects. According to the analysis, a new method of phase retrievals based on two-images and the optimal structure of screen were presented.

Key words: differential phase contrast, x-ray scintillator screen, phase retrieval

中图分类号:  (Scintillation detectors)

  • 29.40.Mc
07.85.Fv (X- and γ-ray sources, mirrors, gratings, and detectors) 07.50.-e (Electrical and electronic instruments and components)