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. 2024 Sep 13;40:100646. doi: 10.1016/j.pacs.2024.100646

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© 2024 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 10 — The reconstruction results of in vivo experimental dataset under different limited imaging conditions. (a1)-(a4) are the reconstruction results of the DAS method in limited-view cases of 120°, 105°, 80° and 60°, respectively. (b1)-(b4) represent the reconstruction results of the U-Net method in limited-view cases of 120°, 105°, 80° and 60°, respectively. (c1)-(c4) are the reconstruction results of the FS-DM method in limited-view cases of 120°, 105°, 80° and 60°, respectively. (d1)-(d4) show the reconstruction results of the proposed method in this study in limited-view cases of 120°, 105°, 80° and 60°, respectively. (a5)-(d5) represent the ground truths. (e) and (f) show error maps of close-up images indicated by the green rectangles 1 and 2, respectively. Ours, the approach utilizing multi-scale diffusion models; FS-DM, a diffusion model trained using the fully-sampled sinogram dataset; GT, ground truth.