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MBIR Training for a 2.5D DL network in X-ray CT

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arxiv 2309.13399 v1 pith:LQZMEBEL submitted 2023-09-23 eess.IV

classification eess.IV
keywords mbirimageimagesnetworkqualitycostdl-mbirfaster
verification ladder T0 review T1 audit T2 compute T3 formal

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In computed tomographic imaging, model based iterative reconstruction methods have generally shown better image quality than the more traditional, faster filtered backprojection technique. The cost we have to pay is that MBIR is computationally expensive. In this work we train a 2.5D deep learning (DL) network to mimic MBIR quality image. The network is realized by a modified Unet, and trained using clinical FBP and MBIR image pairs. We achieve the quality of MBIR images faster and with a much smaller computation cost. Visually and in terms of noise power spectrum (NPS), DL-MBIR images have texture similar to that of MBIR, with reduced noise power. Image profile plots, NPS plots, standard deviation, etc. suggest that the DL-MBIR images result from a successful emulation of an MBIR operator.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Plug-and-Play with 2.5D Artifact Reduction Prior for Fast and Accurate Industrial Computed Tomography Reconstruction

    eess.IV 2025-06 conditional novelty 5.0 of 10

    A 2.5D artifact-reduction CNN prior in plug-and-play reconstruction improves sparse-view X-ray CT quality and defect detection over a 2D prior.

  2. 2.5D Super-Resolution Approaches for X-ray Computed Tomography-based Inspection of Additively Manufactured Parts

    eess.IV 2024-12 conditional novelty 4.0 of 10

    Using seven contiguous CT slices as input improves super-resolved image quality and defect detection for additively manufactured parts compared with single-slice 2D networks, at near-2D memory cost.

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