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Recent CT Metal Artifacts Reduction (MAR) methods are often based on image-to-image convolutional neural networks for adjustment of corrupted sinograms or images themselves. In this paper, we are exploring the capabilities of a multi-domain…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Artem Pimkin , Alexander Samoylenko , Natalia Antipina , Anna Ovechkina , Andrey Golanov , Alexandra Dalechina , Mikhail Belyaev

Metal Artifacts creates often difficulties for a high quality visual assessment of post-operative imaging in {c}omputed {t}omography (CT). A vast body of methods have been proposed to tackle this issue, but {these} methods were designed for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Wang Zihao , Vandersteen Clair , Demarcy Thomas , Gnansia Dan , Raffaelli Charles , Guevara Nicolas , Delingette Herve

Image restoration has traditionally required training specialized models on thousands of paired examples per degradation type. We challenge this paradigm by demonstrating that powerful pre-trained text-conditioned image editing models can…

Image and Video Processing · Electrical Eng. & Systems 2026-01-21 M. Akın Yılmaz , Ahmet Bilican , Burak Can Biner , A. Murat Tekalp

The reduction of metal artifacts in computed tomography (CT) images, specifically for strong artifacts generated from multiple metal objects, is a challenging issue in medical imaging research. Although there have been some studies on…

Image and Video Processing · Electrical Eng. & Systems 2020-08-24 Megumi Nakao , Keiho Imanishi , Nobuhiro Ueda , Yuichiro Imai , Tadaaki Kirita , Tetsuya Matsuda

If a CT scanner introduces a new artifact not present in the training labels, the model may misclassify the images. Although modern CT scanners include design features which mitigate these artifacts, unanticipated or difficult-to-mitigate…

Computer Vision and Pattern Recognition · Computer Science 2026-01-22 Justin Cheung , Samuel Savine , Calvin Nguyen , Lin Lu , Alhassan S. Yasin

Spectral computed tomography has received considerable interest in recent years since spectral measurements contain much richer information about the object of interest. In spectral computed tomography, we are interested in the energy…

Numerical Analysis · Mathematics 2022-03-04 Katrine O Bangsgaard , Genoveva Burca , Evelina Ametova , Martin S Andersen , Jakob S Jørgensen

Foundation models pre-trained on large-scale datasets demonstrate strong transfer learning capabilities; however, their adaptation to complex multi-label diagnostic tasks-such as comprehensive head CT finding detection-remains understudied.…

Computed tomography (CT) images containing metallic objects commonly show severe streaking and shadow artifacts. Metal artifacts are caused by nonlinear beam-hardening effects combined with other factors such as scatter and Poisson noise.…

Medical Physics · Physics 2017-08-02 Hyung Suk Park , Sung Min Lee , Hwa Pyung Kim , Jin Keun Seo

Purpose: The radial k-space trajectory is a well-established sampling trajectory used in conjunction with magnetic resonance imaging. However, the radial k-space trajectory requires a large number of radial lines for high-resolution…

Computer Vision and Pattern Recognition · Computer Science 2018-01-10 Yo Seob Han , Jaejun Yoo , Jong Chul Ye

Metal artifacts caused by the presence of metallic implants tremendously degrade the reconstructed computed tomography (CT) image quality, affecting clinical diagnosis or reducing the accuracy of organ delineation and dose calculation in…

Diffusion models have recently enabled state-of-the-art reconstruction of positron emission tomography (PET) images while requiring only image training data. However, domain shift remains a key concern for clinical adoption: priors trained…

Medical Physics · Physics 2025-10-16 George Webber , Alexander Hammers , Andrew P. King , Andrew J. Reader

In-scanner motion degrades the quality of magnetic resonance imaging (MRI) thereby reducing its utility in the detection of clinically relevant abnormalities. We introduce a deep learning-based MRI artifact reduction model (DMAR) to…

Image and Video Processing · Electrical Eng. & Systems 2020-11-03 Yijun Zhao , Jacek Ossowski , Xuming Wang , Shangjin Li , Orrin Devinsky , Samantha P. Martin , Heath R. Pardoe

Pre-trained image editing models exhibit strong spatial reasoning and object-aware transformation capabilities acquired from billions of image-text pairs, yet they possess no explicit temporal modeling. This paper demonstrates that these…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Nasrin Rahimi , Mısra Yavuz , Burak Can Biner , Yunus Bilge Kurt , Ahmet Rasim Emirdağı , Süleyman Aslan , Görkay Aydemir , M. Akın Yılmaz , A. Murat Tekalp

Accelerated MRI reconstructs images of clinical anatomies from sparsely sampled signal data to reduce patient scan times. While recent works have leveraged deep learning to accomplish this task, such approaches have often only been explored…

Image and Video Processing · Electrical Eng. & Systems 2022-12-01 Michael S. Yao , Michael S. Hansen

Computed Tomography (CT) using synchrotron radiation is a powerful technique that, compared to lab-CT techniques, boosts high spatial and temporal resolution while also providing access to a range of contrast-formation mechanisms. The…

Image and Video Processing · Electrical Eng. & Systems 2025-01-20 Jiayang Shi , Daniel M. Pelt , K. Joost Batenburg

In medical contexts, the imbalanced data distribution in long-tailed datasets, due to scarce labels for rare diseases, greatly impairs the diagnostic accuracy of deep learning models. Recent multimodal text-image supervised foundation…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Sirui Li , Li Lin , Yijin Huang , Pujin Cheng , Xiaoying Tang

Metal implants in MRI cause severe artifacts that degrade image quality and hinder clinical diagnosis. Traditional approaches address metal artifact reduction (MAR) and accelerated MRI acquisition as separate problems. We propose MASC, a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Zhengyi Lu , Ming Lu , Chongyu Qu , Junchao Zhu , Junlin Guo , Marilyn Lionts , Yanfan Zhu , Yuechen Yang , Tianyuan Yao , Jayasai Rajagopal , Bennett Allan Landman , Xiao Wang , Xinqiang Yan , Yuankai Huo

Objective: X-ray computed tomography employing sparse projection views has emerged as a contemporary technique to mitigate radiation dose. However, due to the inadequate number of projection views, an analytic reconstruction method…

Machine Learning · Computer Science 2025-01-10 Yoseob Han

Metal artifact reduction (MAR) is a challenging problem in computed tomography (CT) imaging. A popular class of MAR methods replace sinogram measurements that are corrupted by metal with artificial data. While these ``projection…

Medical Physics · Physics 2021-01-27 T. Humphries , J. Wang

With the proliferation of mobile devices, the need for an efficient model to restore any degraded image has become increasingly significant and impactful. Traditional approaches typically involve training dedicated models for each specific…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Bin Ren , Eduard Zamfir , Zongwei Wu , Yawei Li , Yidi Li , Danda Pani Paudel , Radu Timofte , Ming-Hsuan Yang , Nicu Sebe