Polychromatic X-ray in-line phase-contrast tomography for soft tissue

被引：13
|
作者：
Guo, Xue-Jun [1 ]
Liu, Xiao-Lin [1 ]
Gu, Mu [1 ]
Ni, Chen [1 ]
Huang, Shi-Ming [1 ]
Liu, Bo [1 ]
机构：
[1] Tongji Univ, Dept Phys, Shanghai Key Lab Special Artificial Microstruct M, Shanghai 200092, Peoples R China
来源：
EPL | 2012年 / 98卷 / 01期
基金：
中国国家自然科学基金;
关键词：
COMPUTED-TOMOGRAPHY; ATTENUATION DUALITY; REFRACTIVE-INDEX; RETRIEVAL; ALGORITHM; IMAGE;
D O I：
10.1209/0295-5075/98/14001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An in-line phase-contrast computed tomography algorithm is proposed for the reconstruction of the three-dimensional distribution of the electron density of a weak absorption sample using micro-focus X-ray source. It exploits the natural combination of Feldkamp-Davis-Kress (FDK) cone-beam reconstruction algorithm with a phase retrieval algorithm based on a modified phase-attenuation duality. The effects of the coherence of X-rays and the revolution of the detector are also incorporated into this algorithm. Then an experimental demonstration is given and the results show that the proposed method can reconstruct the electron density of soft tissue effectively. Copyright (C) EPLA, 2012
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页数：5
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