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Medical image registration and segmentation are two of the most frequent tasks in medical image analysis. As these tasks are complementary and correlated, it would be beneficial to apply them simultaneously in a joint manner. In this paper,…

Image and Video Processing · Electrical Eng. & Systems 2021-05-06 Mohamed S. Elmahdy , Laurens Beljaards , Sahar Yousefi , Hessam Sokooti , Fons Verbeek , U. A. van der Heide , Marius Staring

Digital Breast Tomosynthesis (DBT) provides an insight into the fine details of normal fibroglandular tissues and abnormal lesions by reconstructing a pseudo-3D image of the breast. In this respect, DBT overcomes a major limitation of…

Computer Vision and Pattern Recognition · Computer Science 2013-07-24 Guang Yang , John H. Hipwell , David J. Hawkes , Simon R. Arridge

Deformable image registration is a key task in medical image analysis. The Brain Tumor Sequence Registration challenge (BraTS-Reg) aims at establishing correspondences between pre-operative and follow-up scans of the same patient diagnosed…

Image and Video Processing · Electrical Eng. & Systems 2022-12-12 Javid Abderezaei , Aymeric Pionteck , Agamdeep Chopra , Mehmet Kurt

In this paper, we present our submission to the LUMIR25 task of Learn2Reg 2025, which ranked 1st overall on the test set. Extended from LUMIR24, this year's task focuses on zero-shot registration under domain shifts (e.g., high-field MRI,…

Image and Video Processing · Electrical Eng. & Systems 2026-02-24 Hengjie Liu , Yimeng Dou , Di Xu , Xinyi Fu , Dan Ruan , Ke Sheng

To accurately analyze changes of anatomical structures in longitudinal imaging studies, consistent segmentation across multiple time-points is required. Existing solutions often involve independent registration and segmentation components.…

Image and Video Processing · Electrical Eng. & Systems 2019-08-28 Bo Li , Wiro Niessen , Stefan Klein , Marius de Groot , Arfan Ikram , Meike Vernooij , Esther Bron

The recently proposed Segment Anything Model (SAM) is a general tool for image segmentation, but it requires additional adaptation and careful fine-tuning for medical image segmentation, especially for small, irregularly-shaped, and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Yaxi Chen , Aleksandra Ivanova , Shaheer U. Saeed , Rikin Hargunani , Jie Huang , Chaozong Liu , Yipeng Hu

Image synthesis is used to generate synthetic CTs (sCTs) from on-treatment cone-beam CTs (CBCTs) with a view to improving image quality and enabling accurate dose computation to facilitate a CBCT-based adaptive radiotherapy workflow. As…

Image and Video Processing · Electrical Eng. & Systems 2023-12-05 Chelsea A. H. Sargeant , Edward G. A. Henderson , Dónal M. McSweeney , Aaron G. Rankin , Denis Page

Background: Automated segmentation of spinal MR images plays a vital role both scientifically and clinically. However, accurately delineating posterior spine structures presents challenges. Methods: This retrospective study, approved by the…

The practical usage of reinforcement learning agents is often bottlenecked by the duration of training time. To accelerate training, practitioners often turn to distributed reinforcement learning architectures to parallelize and accelerate…

Machine Learning · Computer Science 2020-01-24 Michael Luo , Jiahao Yao , Richard Liaw , Eric Liang , Ion Stoica

Deformable medical image registration is a fundamental task in medical image analysis with applications in disease diagnosis, treatment planning, and image-guided interventions. Despite significant advances in deep learning based…

Machine Learning · Computer Science 2026-02-10 Muhammad Zafar Iqbal , Ghazanfar Farooq Siddiqui , Anwar Ul Haq , Imran Razzak

Medical image registration is a fundamental task in medical image analysis, enabling the alignment of images from different modalities or time points. However, intensity inconsistencies and nonlinear tissue deformations pose significant…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Eytan Kats , Christoph Grossbroehmer , Ziad Al-Haj Hemidi , Fenja Falta , Wiebke Heyer , Mattias P. Heinrich

Image registration has traditionally been done using two distinct approaches: learning based methods, relying on robust deep neural networks, and optimization-based methods, applying complex mathematical transformations to warp images…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Gabriel De Araujo , Shanlin Sun , Xiaohui Xie

MRI provides superior soft tissue contrast without ionizing radiation; however, the absence of electron density information limits its direct use for dose calculation. As a result, current radiotherapy workflows rely on combined MRI and CT…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Zolnamar Dorjsembe , Hung-Yi Chen , Furen Xiao , Hsing-Kuo Pao

Establishing pixel/voxel-level or region-level correspondences is the core challenge in image registration. The latter, also known as region-based correspondence representation, leverages paired regions of interest (ROIs) to enable regional…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Shiqi Huang , Tingfa Xu , Wen Yan , Dean Barratt , Yipeng Hu

Deformable registration has been one of the pillars of biomedical image computing. Conventional approaches refer to the definition of a similarity criterion that, once endowed with a deformation model and a smoothness constraint, determines…

Computer Vision and Pattern Recognition · Computer Science 2018-09-25 Enzo Ferrante , Puneet K. Dokania , Rafael Marini Silva , Nikos Paragios

Pretraining on large-scale datasets has been shown to improve transformer generalizability, even for out-of-domain (OOD) modalities and tasks. However, two common assumptions often fail under OOD transfer: that downstream datasets can be…

In the field of radiotherapy, accurate imaging and image registration are of utmost importance for precise treatment planning. Magnetic Resonance Imaging (MRI) offers detailed imaging without being invasive and excels in soft-tissue…

Image and Video Processing · Electrical Eng. & Systems 2023-11-29 Saba Nikbakhsh , Lachin Naghashyar , Morteza Valizadeh , Mehdi Chehel Amirani

The PI-CAI (Prostate Imaging: Cancer AI) challenge led to expert-level diagnostic algorithms for clinically significant prostate cancer detection. The algorithms receive biparametric MRI scans as input, which consist of T2-weighted and…

Image and Video Processing · Electrical Eng. & Systems 2024-07-01 Alessa Hering , Sarah de Boer , Anindo Saha , Jasper J. Twilt , Mattias P. Heinrich , Derya Yakar , Maarten de Rooij , Henkjan Huisman , Joeran S. Bosma

Image registration of liver dynamic contrast-enhanced computed tomography (DCE-CT) is crucial for diagnosis and image-guided surgical planning of liver cancer. However, intensity variations due to the flow of contrast agents combined with…

Image and Video Processing · Electrical Eng. & Systems 2023-03-09 Peng Xue , Jingyang Zhang , Lei Ma , Mianxin Liu , Yuning Gu , Jiawei Huang , Feihong Liua , Yongsheng Pan , Xiaohuan Cao , Dinggang Shen