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CLEAR-Net: A Discretization-Aware Framework for Scale and Domain Adaptive Metal Artifact Reduction in CT

  • Faculty of Computing, Harbin Institute of Technology
  • Zhongguancun Academy
  • Beijing Academy of Artificial Intelligence

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Metal artifacts severely degrade the quality of CT images. Existing learning-based metal artifact reduction (MAR) methods often miss multi-scale anatomy and fail to transfer from synthetic to clinical scans. We present CLEAR-Net, which injects clinical priors and adaptively aligns corrupted features via two modules: CEAB, a quantized multi-scale anatomy bank distilled from clean clinical CTs, and FLAG, a scale-wise gating mechanism that aligns features to CEAB priors across domains. This structure-aware design preserves organ boundaries and fine textures, boosting robustness and generalization. Extensive experiments demonstrate CLEAR-Net's superior performance. The source code will be made publicly available.

Original languageEnglish
Title of host publicationProceedings - 2025 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2025
EditorsJuan Liu, Jingshan Huang, Xiaowo Wang, Fa Zhang, Xiufen Zou, Tian Tian, Xiaohua Hu, Bin Hu, Yi Xiong
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4568-4571
Number of pages4
ISBN (Electronic)9798331515577
DOIs
StatePublished - 2025
Externally publishedYes
Event2025 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2025 - Wuhan, China
Duration: 15 Dec 202518 Dec 2025

Publication series

NameProceedings - 2025 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2025

Conference

Conference2025 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2025
Country/TerritoryChina
CityWuhan
Period15/12/2518/12/25

Keywords

  • CT Restoration
  • Deep Learning
  • Discretization Alignment
  • Metal Artifact Reduction
  • Multi-Scale Prior

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