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The positive outcome of a trauma intervention depends on an intraoperative evaluation of inserted metallic implants. Due to occurring metal artifacts, the quality of this evaluation heavily depends on the performance of so-called Metal…

Image and Video Processing · Electrical Eng. & Systems 2021-12-07 Tristan M. Gottschalk , Andreas Maier , Florian Kordon , Björn W. Kreher

Metal artifact correction is a challenging problem in cone beam computed tomography (CBCT) scanning. Metal implants inserted into the anatomy cause severe artifacts in reconstructed images. Widely used inpainting-based metal artifact…

Image and Video Processing · Electrical Eng. & Systems 2023-10-10 Harshit Agrawal , Ari Hietanen , Simo Särkkä

The presence of metallic implants often introduces severe metal artifacts in the X-ray CT images, which could adversely influence clinical diagnosis or dose calculation in radiation therapy. In this work, we present a novel…

Image and Video Processing · Electrical Eng. & Systems 2021-09-29 Lequan Yu , Zhicheng Zhang , Xiaomeng Li , Hongyi Ren , Wei Zhao , Lei Xing

During X-ray computed tomography (CT) scanning, metallic implants carrying with patients often lead to adverse artifacts in the captured CT images and then impair the clinical treatment. Against this metal artifact reduction (MAR) task, the…

Image and Video Processing · Electrical Eng. & Systems 2022-12-27 Hong Wang , Qi Xie , Yuexiang Li , Yawen Huang , Deyu Meng , Yefeng Zheng

In total hip arthroplasty, analysis of postoperative medical images is important to evaluate surgical outcome. Since Computed Tomography (CT) is most prevalent modality in orthopedic surgery, we aimed at the analysis of CT image. In this…

Image and Video Processing · Electrical Eng. & Systems 2019-06-28 Mitsuki Sakamoto , Yuta Hiasa , Yoshito Otake , Masaki Takao , Yuki Suzuki , Nobuhiko Sugano , Yoshinobu Sato

In the presence of metal implants, metal artifacts are introduced to x-ray CT images. Although a large number of metal artifact reduction (MAR) methods have been proposed in the past decades, MAR is still one of the major problems in…

Medical Physics · Physics 2018-04-23 Yanbo Zhang , Hengyong Yu

In computed tomography (CT), metal implants increase the inconsistencies between the measured data and the linear attenuation assumption made by analytic CT reconstruction algorithms. The inconsistencies give rise to dark and bright bands…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Sungsoo Ha , Klaus Mueller

Segmenting anatomical structures in medical images has been successfully addressed with deep learning methods for a range of applications. However, this success is heavily dependent on the quality of the image that is being segmented. A…

Image and Video Processing · Electrical Eng. & Systems 2020-07-06 Ilkay Oksuz , James R. Clough , Bram Ruijsink , Esther Puyol Anton , Aurelien Bustin , Gastao Cruz , Claudia Prieto , Andrew P. King , Julia A. Schnabel

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

In computed tomography (CT), the presence of metallic implants in patients often leads to disruptive artifacts in the reconstructed images, hindering accurate diagnosis. Recently, a large amount of supervised deep learning-based approaches…

Image and Video Processing · Electrical Eng. & Systems 2024-06-21 Xinquan Yang , Guanqun Zhou , Wei Sun , Youjian Zhang , Zhongya Wang , Jiahui He , Zhicheng Zhang

Metal artefact reduction (MAR) techniques aim at removing metal-induced noise from clinical images. In Computed Tomography (CT), supervised deep learning approaches have been shown effective but limited in generalisability, as they mostly…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Marta B. M. Ranzini , Irme Groothuis , Kerstin Kläser , M. Jorge Cardoso , Johann Henckel , Sébastien Ourselin , Alister Hart , Marc Modat

Current deep neural network based approaches to computed tomography (CT) metal artifact reduction (MAR) are supervised methods which rely heavily on synthesized data for training. However, as synthesized data may not perfectly simulate the…

Image and Video Processing · Electrical Eng. & Systems 2019-12-02 Haofu Liao , Wei-An Lin , Jianbo Yuan , S. Kevin Zhou , Jiebo Luo

Metal artifact reduction (MAR) is one of the most important research topics in computed tomography (CT). With the advance of deep learning technology for image reconstruction,various deep learning methods have been also suggested for metal…

Image and Video Processing · Electrical Eng. & Systems 2020-07-08 Junghyun Lee , Jawook Gu , Jong Chul Ye

In several image acquisition and processing steps of X-ray radiography, knowledge of the existence of metal implants and their exact position is highly beneficial (e.g. dose regulation, image contrast adjustment). Another application which…

Image and Video Processing · Electrical Eng. & Systems 2022-03-18 Fuxin Fan , Ludwig Ritschl , Marcel Beister , Ramyar Biniazan , Björn Kreher , Tristan M. Gottschalk , Steffen Kappler , Andreas Maier

This preliminary study focuses on the development of a medical image segmentation algorithm based on artificial intelligence for calculating bone growth in contact with metallic implants. %as a result of the problem of estimating the growth…

Image and Video Processing · Electrical Eng. & Systems 2022-04-25 Fernando García-Torres , Carmen Mínguez-Porter , Julia Tomás-Chenoll , Sofía Iranzo-Egea , Juan-Manuel Belda-Lois

Motion artifacts caused by prolonged acquisition time are a significant challenge in Magnetic Resonance Imaging (MRI), hindering accurate tissue segmentation. These artifacts appear as blurred images that mimic tissue-like appearances,…

Image and Video Processing · Electrical Eng. & Systems 2024-12-06 Sunyoung Jung , Yoonseok Choi , Mohammed A. Al-masni , Minyoung Jung , Dong-Hyun Kim

An attention guided scheme for metal artifact correction in MRI using deep neural network is proposed in this paper. The inputs of the networks are two distorted images obtained with dual-polarity readout gradients. With MR image generation…

Image and Video Processing · Electrical Eng. & Systems 2019-10-22 Jee Won Kim , Kinam Kwon , Byungjai Kim , HyunWook Park

Patient motion during the magnetic resonance imaging (MRI) acquisition process results in motion artifacts, which limits the ability of radiologists to provide a quantitative assessment of a condition visualized. Often times, radiologists…

Image and Video Processing · Electrical Eng. & Systems 2020-10-14 Tejas Sudharshan Mathai , Yi Wang , Nathan Cross

Metal artifacts, caused by high-density metallic implants in computed tomography (CT) imaging, severely degrade image quality, complicating diagnosis and treatment planning. While existing deep learning algorithms have achieved notable…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Farid Tasharofi , Fuxin Fan , Melika Qahqaie , Mareike Thies , Andreas Maier

Computed tomography (CT) is an imaging modality widely used for medical diagnosis and treatment. CT images are often corrupted by undesirable artifacts when metallic implants are carried by patients, which creates the problem of metal…

Image and Video Processing · Electrical Eng. & Systems 2019-07-02 Wei-An Lin , Haofu Liao , Cheng Peng , Xiaohang Sun , Jingdan Zhang , Jiebo Luo , Rama Chellappa , Shaohua Kevin Zhou
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