Reconstructing high resolution image from overlapped low resolution fan beam projections data

Based on the study of the algebraic reconstruction techniques (ART) and the fan beam interpolative algebraic reconstruction techniques (FIART), two novel algorithms to reconstruct high resolution CT image from overlapped low resolution fan beam projection data are presented. One of the algorithms is called fan beam virtual detector algorithm, and the other is called fan beam direct reconstruction algorithm. Some simulation results are shown and analyzed.