CT所致受检者个体化器官剂量的研究进展

CT检查所引发的辐射风险备受关注，器官剂量被认为是量化受检者辐射剂量和评估风险的最有意义的技术参数。目前获取CT所致受检者器官剂量的方法主要包括：物理模体测量法、人体直接测量法、剂量转换系数法、蒙特卡罗模拟法、剂量计算软件法等。尽管不同的方法各有其特点和应用情形，但受检者器官剂量的个体化始终是辐射防护与剂量学研究所追求的目标。基于人工智能的个体化建模和GPU蒙卡仿真使得受检者器官剂量个体化计算成为可能，而基于CT探测器信号的受检者器官剂量反推则为受检者器官剂量的个体化研究提供了新的解决方案。

Research progress of patient-specific organ doses from CT

The radiation risk caused by CT examination is of great concern. Organ dose is considered to be the most significant technical parameter for quantifying the patient radiation dose and assessing the corresponding risk. At present, the methods to obtain patient organ dose caused by CT examination mainly include physical phantom measurement, direct human body measurement, dose conversion coefficient, Monte Carlo simulation, and dose calculation software. Although different methods have their own characteristics and application, the individualization of organ dose is always the goal of radiation protection and dosimetry research. Patient-specific phantom developed with artificial intelligence and GPU-accelerated Monte Carlo simulation make it possible to calculate the patient-specific organ dose, and the patient-specific organ dose extrapolated by the CT detector signal provides a new solution.