Iterative reconstruction for few-view grating-based phase-contrast CT -An in vitro mouse model
Iterative reconstruction for few-view grating-based phase-contrast CT -An in vitro mouse model
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DOI：
10.1209/0295-5075/102/48001
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发表时间：
2013-05-01
期刊：
影响因子：
1.8
通讯作者：
Haase, A.
中科院分区：
文献类型：
--
作者：
Gaass, T.;Potdevin, G.;Haase, A.
本工作的目的是在一个体外小鼠模型上，通过压缩传感(CS)启发的迭代重建来研究基于少视角栅格的相衬CT(PCCT)应用中图像质量的改善。PCCT测量是在使用高亮度同步加速器源和常规管源的基于光栅的PCCT设置上进行的。数据的采样密度减少高达20倍，并迭代重建。结果表明，基于光栅基的PCCT本质上满足了CS成功应用的主要条件。对比度、保真度和细节的再现在所有重建的对象中都呈现出来。对传统X射线源产生的数据进行迭代重建的可行性在流体体模和小鼠标本上得到说明，其抽样不足20倍。版权所有(C)Epla，2013
The aim of this work is to investigate the improvement of image quality in few-view grating-based phase-contrast computed tomography (PCCT) applications via compressed sensing (CS) inspired iterative reconstruction on an in vitro mouse model. PCCT measurements are performed on a grating-based PCCT setup using a high-brilliance synchrotron source and a conventional tube source. The sampling density of the data is reduced by a factor of up to 20 and iteratively reconstructed. It is demonstrated that grating-based PCCT intrinsically meets the major conditions for a successful application of CS. Contrast fidelity and the reproduction of details is presented in all reconstructed objects. The feasibility of the iterative reconstruction on data generated with a conventional X-ray source is illustrated on a fluid phantom and a mouse specimen, undersampled by a factor of up to 20. Copyright (C) EPLA, 2013