AI 中文总结
该研究提出基于同步辐射的F3CT技术，结合针孔光阑与能量分辨二维探测器，经两阶段校准-重建工作流程实现三维元素Mapping，可用于生物、地质样本成像，为三维X射线荧光成像及关联断层扫描提供新方案。
AI 中文摘要
我们提出了F3CT，这是一种基于同步辐射的高光谱全场荧光计算机断层扫描技术，它结合针孔光阑与能量分辨二维探测器，避免了光栅扫描。虚拟锥束模型与两阶段校准-重建工作流程可在全场照明下实现三维元素Mapping。该方法在生物与地质样本上得到验证，解析了斑马鱼组织中的银染色分布及岩芯中的高能荧光信号。在相同实验几何下依次获取的相衬断层图提供了配准的结构背景。F3CT为三维X射线荧光成像提供了高通量路径，为结构与化学关联断层扫描奠定基础，具备未来原位与 operando 实施的潜力。
英文摘要
We present F3CT, a synchrotron-based hyperspectral full-field fluorescence computed tomography technique that avoids raster scanning by combining a pinhole aperture with an energy-resolving 2D detector. A virtual cone-beam model and two-stage calibration-reconstruction workflow enable 3D elemental mapping under full-field illumination. The method is demonstrated on biological and geological specimens, resolving silver-stain distributions in zebrafish tissue and high-energy fluorescence signatures in rock cores. Phase-contrast tomograms acquired sequentially under the same experimental geometry provide co-registered structural context. F3CT provides a high-throughput route to 3D XRF imaging and establishes a foundation for correlated structural and chemical tomography, with potential for future in-situ and operando implementations.
