Liang Xiuzuo, Yang Shihan, Liu Haoyan, Huang Xianchao, Li Jianwei, Wang Yingjie, Hu Tingting, Liu Shuangquan, Liu Xinmeng, Hu Xuanhou, Wang Xiaoming, Zhang Zhiming, Wei Cunfeng, Shuai Lei, Wei Long
Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049, Beijing, China.
Sci Rep. 2025 Apr 26;15(1):14587. doi: 10.1038/s41598-025-97206-w.
The radiation imaging and intensity quantification of radioactive material is attracting increasing attention in numerous applications including radiological source investigation, radiation safety, nuclear security, nuclear facility maintenance and decommissioning. Here, quantitative intensity measurement of the far-field radioactive source is achieved by gamma-ray imaging, which is based on the conventional mask-antimask coded aperture approach. A multi-sensor radiation imaging system that fuses gamma-ray images, optical pictures, and 3D point clouds into a single vision is what we have created. Without the use of a mobile platform for numerous measurements or trajectory data, it is possible to simultaneously and in real time obtain the intensity and distribution of radioactive sources. In order to demonstrate the exceptional noise-resistant nature of the proposed quantitative gamma-ray imaging technique in the presence of interfering radiation, we present experimental results of point-like sources and actual nuclear power plant scenarios. This encourages further possibilities for widespread coded aperture applications. Incidentally, the system we designed offers a highly promising solution for the upgrade of existing coded aperture cameras.
放射性物质的辐射成像和强度定量在包括放射源调查、辐射安全、核安保、核设施维护与退役等众多应用中受到越来越多的关注。在此，基于传统的掩模-反掩模编码孔径方法，通过伽马射线成像实现了远场放射源的定量强度测量。我们创建了一个多传感器辐射成像系统，该系统将伽马射线图像、光学图片和三维点云融合为单一视图。无需使用用于多次测量的移动平台或轨迹数据，就能够同时实时获取放射源的强度和分布。为了证明所提出的定量伽马射线成像技术在存在干扰辐射时具有出色的抗噪声特性，我们展示了点状源和实际核电站场景的实验结果。这为编码孔径的广泛应用带来了更多可能性。顺便提一下，我们设计的系统为现有编码孔径相机的升级提供了极具前景的解决方案。
