论文标题
通过单网格相对比成像从单个X射线投影中的材料分解
Material decomposition from a single x-ray projection via single-grid phase contrast imaging
论文作者
论文摘要
这项研究描述了X射线成像中材料分解的一种新方法，利用相对的相反，与增加对弱分析样品的敏感性以及作为衰减的互补测量，因此可以分离两种覆盖物质。使用单网格X射线相对比成像技术捕获测量值，其旨在消除衰减图像中尖锐边缘的基于传播的相位效应。单曝光技术的使用意味着可以以高速序列收集图像。结果显示了已知的两种物质样品和生物样品的结果。
This study describes a new approach for material decomposition in x-ray imaging, utilising phase contrast to both increase sensitivity to weakly-attenuating samples and to act as a complementary measurement to attenuation, therefore allowing two overlaid materials to be separated. The measurements are captured using the single-exposure, single-grid x-ray phase contrast imaging technique, with a novel correction that aims to remove propagation-based phase effects seen at sharp edges in the attenuation image. The use of a single-exposure technique means that images could be collected in a high-speed sequence. Results are shown for both a known two-material sample and for a biological specimen.
