X-ray absorption tomography employing a conical shell beam
X-ray absorption tomography employing a conical shell beam
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DOI：
10.1364/oe.24.029048
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发表时间：
2016-12-12
期刊：
影响因子：
3.8
通讯作者：
Rogers, K. D.
中科院分区：
文献类型：
--
作者：
Evans, J. P. O.;Godber, S. X.;Rogers, K. D.
我们展示了深度分辨吸收成像通过扫描一个物体通过一个锥形壳的X射线。我们测量环形投影并应用断层合成来提取不同轴向焦平面位置处的光学切片。三维物体已被成像，以验证我们的理论治疗。我们的方法的新原理是可扩展的扫描尺寸和X射线能量。这项工作的驱动程序是补充以前报道的方法有关的衍射X射线结构分析的测量。采用锥形壳光束将吸收和衍射模态联合收割机两者结合的前景将提供增强的分析效用，并且在安全筛选、过程控制和诊断成像中具有许多潜在的应用。(C)2016美国光学学会
We demonstrate depth-resolved absorption imaging by scanning an object through a conical shell of X-rays. We measure ring shaped projections and apply tomosynthesis to extract optical sections at different axial focal plane positions. Three-dimensional objects have been imaged to validate our theoretical treatment. The novel principle of our method is scalable with respect to both scan size and X-ray energy. A driver for this work is to complement previously reported methods concerning the measurement of diffracted X-rays for structural analysis. The prospect of employing conical shell beams to combine both absorption and diffraction modalities would provide enhanced analytical utility and has many potential applications in security screening, process control and diagnostic imaging. (C) 2016 Optical Society of America