SART算法在TGS透射数据分析中的应用

摘要

The method of transmission data-analysis of TGS which uses the continual scanning mode was researched. The SART arithmetic was used and the calculation of the parameters in the arithmetic was discussed. Monte Carlo simulations were done to prove the rationality of the method. The maximum deviation between the reconstructed values of linear attenuation coefficients and the declared values is less than 11 % , and it shows that the method is rational.%本文针对层析γ扫描(TGS)装置连续扫描模式的特点,将SART算法应用到透射数据的分析方法中,并讨论了算法中各参数的计算方法,最后用蒙特卡罗模拟实验对方法的合理性进行了验证.在中低密度介质情况下,计算得到的各体素线衰减系数的重建值与标称值之间的相对偏差均小于11％,表明该分析方法是合理的.