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Strategy of extraction methods and reconstruction algorithms in computed tomography of diffraction enhanced imaging
Huang, ZF; Kang, KJ; Zhu PP(朱佩平); Huang WX(黄万霞); Yuan QX(袁清习); Wang JY(王寯越); Zhu, PP; Huang, WX; Yuan, QX; Wang, JY
2007
发表期刊PHYSICS IN MEDICINE AND BIOLOGY
卷号52期号:1页码:1-12
通讯作者Huang, ZF (reprint author), Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China.
摘要Computed tomography of diffraction enhanced imaging ( DEI-CT) is a novel x-ray phase-contrast computed tomography which is applied to inspect weakly absorbing low-Z samples. Refraction-angle images which are extracted from a series of raw DEI images measured in different positions of the rocking curve of the analyser can be regarded as projections of DEI-CT. Based on them, the distribution of refractive index decrement in the sample can be reconstructed according to the principles of CT. How to combine extraction methods and reconstruction algorithms to obtain the most accurate reconstructed results is investigated in detail in this paper. Two kinds of comparison, the comparison of different extraction methods and the comparison between 'two-step' algorithms and the Hilbert filtered backprojection ( HFBP) algorithm, draw the conclusion that the HFBP algorithm based on the maximum refraction-angle ( MRA) method may be the best combination at present. Though all current extraction methods including the MRA method are approximate methods and cannot calculate very large refraction-angle values, the HFBP algorithm based on the MRA method is able to provide quite acceptable estimations of the distribution of refractive index decrement of the sample. The conclusion is proved by the experimental results at the Beijing Synchrotron Radiation Facility.
文章类型Article
学科领域Engineering; Radiology, Nuclear Medicine & Medical Imaging
DOI10.1088/0031-9155/52/1/001
收录类别SCI
WOS类目Engineering, Biomedical ; Radiology, Nuclear Medicine & Medical Imaging
WOS记录号WOS:000243684400001
引用统计
被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225409
专题多学科研究中心
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GB/T 7714
Huang, ZF,Kang, KJ,Zhu PP,et al. Strategy of extraction methods and reconstruction algorithms in computed tomography of diffraction enhanced imaging[J]. PHYSICS IN MEDICINE AND BIOLOGY,2007,52(1):1-12.
APA Huang, ZF.,Kang, KJ.,朱佩平.,黄万霞.,袁清习.,...&Wang, JY.(2007).Strategy of extraction methods and reconstruction algorithms in computed tomography of diffraction enhanced imaging.PHYSICS IN MEDICINE AND BIOLOGY,52(1),1-12.
MLA Huang, ZF,et al."Strategy of extraction methods and reconstruction algorithms in computed tomography of diffraction enhanced imaging".PHYSICS IN MEDICINE AND BIOLOGY 52.1(2007):1-12.
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