Interlaced phase stepping in phase-contrast x-ray tomography
Interlaced phase stepping in phase-contrast x-ray tomography
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DOI：
10.1063/1.3559849
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发表时间：
2011-02-28
影响因子：
4
通讯作者：
Weitkamp, T.
中科院分区：
文献类型：
--
作者：
Zanette, I.;Bech, M.;Weitkamp, T.
我们报告了一种基于光栅的X射线相衬断层扫描的隔行扫描采集方案，其中使用不同的视角来检索单个差分相位投影。这种隔行采集方案对于感兴趣区域断层摄影特别有益，因为它大大减少了由外部区域引起的伪影，并且可以消除对断层摄影旋转轴的走走停停运动的需要。在这封信中，更高的精度与交错的方法获得的感兴趣区域的相位重建的数值模拟和实验结果表明。(C)2011年美国物理学会。[doi：10.1063/1.3559849]
We report on an interlaced acquisition scheme in grating-based x-ray phase-contrast tomography in which different viewing angles are used to retrieve a single differential phase projection. This interlaced acquisition scheme is particularly beneficial for region-of-interest tomography since it substantially reduces the artifacts caused by the external region and can eliminate the need for stop-and-go motion of the tomography rotation axis. In this letter, the higher accuracy of the region-of-interest phase reconstructions obtained with the interlaced approach is demonstrated by numerical simulation and experimental results. (C) 2011 American Institute of Physics. [doi:10.1063/1.3559849]