Algebraic reconstruction technique in image reconstruction with narrow fan-beam

In order to improve the quality of reconstruction image, the authors propose a new algebraic reconstruction technique. The new method ameliorates the process of the old iterative method and adds a new iterative parameter: lambda, which can improve the quality of reconstruction image by changing the iterative process and adjusting convergence factor. The efficiency of algebraic reconstruction technique is evaluated in contrast to that of its traditional serial counterpart. Experiment results clearly demonstrate that algebraic reconstruction technique can efficiently improve quality of reconstruction images when processing the incomplete projection data or. noisy projection data.