Polychromatic X-ray in-line phase-contrast tomography for soft tissue
Polychromatic X-ray in-line phase-contrast tomography for soft tissue
复制标题
用于软组织的多色 X 射线在线相衬断层扫描
DOI：
10.1209/0295-5075/98/14001
复制
发表时间：
2012-04-01
期刊：
影响因子：
1.8
通讯作者：
Liu, Bo
中科院分区：
文献类型：
--
作者：
Guo, Xue-Jun;Liu, Xiao-Lin;Liu, Bo
提出了一种利用微焦点X射线源重建弱吸收样品电子密度三维分布的同轴相衬CT算法。它利用了Feldkamp-Davis-Kress（FDK）锥束重建算法与基于修改的相位衰减对偶的相位恢复算法的自然组合。X射线的相干性和探测器的旋转的影响也被纳入该算法。实验结果表明，该方法能有效地重建软组织的电子密度。版权所有（C）EPLA，2012
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