【摘要】 线性衰减系数图像重建是层析γ扫描(TGS)的一个核心问题。本文从粒子输运方程出发,应用Monte Carlo方法,提出了一种基于Monte Carlo方法的统计迭代图像重建算法。模拟结果表明,与一般TGS图像重建算法相比,该重建算法的重建图像误差大为减小,能够满足TGS装置的要求。更多还原

【Abstract】 Linear attenuation coefficient image reconstruction is an important problem in tomographic gamma scanning(TGS). The MonteCarlo statistical iteration image reconstruction algorithm according to particle transport theory and MonteCarlo method is presented. Simulating results indicate that the image reconstruction errors are reduced greatly by the new reconstruction algorithm comparing with general TGS algorithm. It can meet the requirements of TGS device.更多还原