Comparison of data-acquisition designs for single-shot edge-illumination X-ray phase-contrast tomography.
Comparison of data-acquisition designs for single-shot edge-illumination X-ray phase-contrast tomography.
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DOI：
10.1364/oe.28.000001
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发表时间：
2019-12
期刊：
影响因子：
3.8
通讯作者：
Yujia Chen;Weimin Zhou;C. Hagen;A. Olivo;M. Anastasio
中科院分区：
文献类型：
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作者：
Yujia Chen;Weimin Zhou;C. Hagen;A. Olivo;M. Anastasio
边缘照明x射线相衬断层扫描（EIXPCT）是一种新兴的技术，可以实现实验室x射线源的实际相衬成像。提出了一种用于重构EIXPCT图像的联合重构方法，实现了新颖灵活的数据采集设计。然而，只有有限的努力已经致力于优化数据采集设计与联合重建方法的使用。在本研究中，介绍了几种有前途的设计，如恒定孔径位置（CAP）策略和不同角度范围的交替孔径位置（AAP）策略。在计算机仿真研究中，对这些设计进行了分析和比较。实验数据用于在实际应用中测试设计。还比较了所有候选设计的实现复杂性。讨论了数据采集时间和图像质量之间的权衡。
Edge-illumination X-ray phase-contrast tomography (EIXPCT) is an emerging technique that enables practical phase-contrast imaging with laboratory-based X-ray sources. A joint reconstruction method was proposed for reconstructing EIXPCT images, enabling novel flexible data-acquisition designs. However, only limited efforts have been devoted to optimizing data-acquisition designs for use with the joint reconstruction method. In this study, several promising designs are introduced, such as the constant aperture position (CAP) strategy and the alternating aperture position (AAP) strategy covering different angular ranges. In computer-simulation studies, these designs are analyzed and compared. Experimental data are employed to test the designs in real-world applications. All candidate designs are also compared for their implementation complexity. The tradeoff between data-acquisition time and image quality is discussed.