Zhi-Feng Huang et al 2006 Phys. Med. Biol. 51 3031 doi:10.1088/0031-9155/51/12/002
Zhi-Feng Huang, Ke-Jun Kang and Zheng Li
Show affiliationsAs a new method, x-ray diffraction enhanced imaging (DEI) has extremely high sensitivity for weakly absorbing low-Z samples in medical and biological fields. Conventional performance parameters, such as spatial resolution and low-contrast resolution, are not enough to describe the characteristics of a DEI system. This paper focuses on refraction-angle resolution which describes the ability of a DEI system to differentiate the x-rays refracted by the sample. The analysis of refraction-angle resolution is composed of two parts: the analysis of the single DEI image measured in a certain position of the rocking curve and the analysis of the refraction-angle image calculated by extraction methods. A 2D computer simulation experiment is performed to prove the results of the analyses. The limitations and conclusions of refraction-angle resolution are described in the end.
07.05.Tp Computer modeling and simulation
87.64.Bx Electron, neutron and x-ray diffraction and scattering
Issue 12 (21 June 2006)
Received 7 March 2006
Published 31 May 2006
Zhi-Feng Huang et al 2006 Phys. Med. Biol. 51 3031
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