A Projection Access Scheme Based on Prime Number Increment for Cone-Beam Iterative Reconstruction

The convergence speed of algebraic reconstruction technique (ART) depends heavily on the order in which the projections are considered. In this study, a projection access scheme based on prime number increment is proposed, which is applicable to uniform projection sampling in any angle range. We compared the results reconstructed from the proposed method with the results reconstructed from the conventional sequential method, the prime number decomposition method and random ordering method, for cone-beam X-ray computed tomography reconstruction and for the case of circular acquisition. The results indicate that using the proposed method can accelerate the convergence of ART and produces more accurate images with fewer artifacts.