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The iterative reconstruction process for simulated blood vessels under 64 projections. (a)-(f) The iterative reconstruction process of the sinograms from the 0th to the 1000th iterations. (h)-(m) The corresponding blood vessel images were reconstructed from the sinograms using the DAS method. (g) and (n) The GT for the sinograms and blood vessel images, respectively. (o) and (p) The PSNR and SSIM iteration carves, respectively.
