提出了一种改进的代数迭代重建技术，通过计算机数值模拟，考查了其重建精度与投影方向数、迭代次数的关系。结果表明，这种技术与代数迭代法(ART)比较，具有收敛速率快、重建精度高的优点。把这种技术应用于一个三维温度场的重建，再现了其三维温度分布。

A modified algebraic reconstructive technique ART is presented. By the computer simulation, relationship between reconstructive precision and views and relationship between reconstructive accuracy and iterations are tested. The results show that this technique has the merits of quick convergence and high reconstructive precision as compared with ART. Using this technique to the tomography of a three peak temperature field, the three dimensional temperature distribution is reconstructed.