Proof of principle experiment for demonstrating high-resolution computed tomography ghost-imaging x-ray fluorescence

X-ray fluorescence computed tomography (XRF-CT) is an important imaging technique that provides three-dimensional chemical maps. It can be used in many fields for example, to study the distribution of trace elements in biological tissues, to map the distribution of metal ions in materials, or to study the distribution of contrast agents in medical imaging. Despite its success XRF-CT faces several challenges related to the requirement to focus the incident beam and raster scan the sample. Our proposal centres around a proof-of-principle experiment aimed at demonstrating the potential of applying an innovative technique called Ghost Imaging (GI) to XRF-CT. This experimental endeavour underscores several significant advantages that distinguish it from conventional raster scan imaging approaches:

X射线荧光计算机断层扫描（X-ray fluorescence computed tomography, XRF-CT）是一类重要的成像技术，可提供三维化学分布图。该技术可应用于诸多领域，例如研究生物组织内微量元素的分布、绘制材料中金属离子的分布图谱，或是探究医学成像中造影剂的分布情况。尽管XRF-CT已取得成功，但仍面临若干挑战，这些挑战均与入射光束聚焦以及样品光栅扫描的技术要求相关。本研究提出的方案以一项原理验证实验为核心，旨在验证将鬼成像（Ghost Imaging, GI）这一创新技术应用于XRF-CT的潜力。本次实验研究凸显了其相较于传统光栅扫描成像方法的多项显著优势：