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Undersampled CT volumes minimize acquisition time and radiation exposure but introduce artifacts degrading image quality and diagnostic utility. Reducing these artifacts is critical for high-quality imaging. We propose a computationally…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Johannes Thalhammer , Tina Dorosti , Sebastian Peterhansl , Daniela Pfeiffer , Franz Pfeiffer , Florian Schaff

In this work we reduce undersampling artefacts in two-dimensional ($2D$) golden-angle radial cine cardiac MRI by applying a modified version of the U-net. We train the network on $2D$ spatio-temporal slices which are previously extracted…

Image and Video Processing · Electrical Eng. & Systems 2019-08-14 Andreas Kofler , Marc Dewey , Tobias Schaeffter , Christian Wald , Christoph Kolbitsch

Kidney volume is greatly affected in several renal diseases. Precise and automatic segmentation of the kidney can help determine kidney size and evaluate renal function. Fully convolutional neural networks have been used to segment organs…

Image and Video Processing · Electrical Eng. & Systems 2020-09-02 Omid Bazgir , Kai Barck , Richard A. D. Carano , Robby M. Weimer , Luke Xie

Proton therapy offers superior organ-at-risk sparing but is highly sensitive to anatomical changes, making accurate deformable image registration (DIR) across longitudinal CT scans essential. Conventional DIR methods are often too slow for…

We aim to reduce the tedious nature of developing and evaluating methods for aligning PET-CT scans from multiple patient visits. Current methods for registration rely on correspondences that are created manually by medical experts with 3D…

Computer Vision and Pattern Recognition · Computer Science 2019-11-26 Teaghan O'Briain , Kyong Hwan Jin , Hongyoon Choi , Erika Chin , Magdalena Bazalova-Carter , Kwang Moo Yi

Organ shape reconstruction based on a single-projection image during treatment has wide clinical scope, e.g., in image-guided radiotherapy and surgical guidance. We propose an image-to-graph convolutional network that achieves deformable…

Image and Video Processing · Electrical Eng. & Systems 2022-08-01 Megumi Nakao , Mitsuhiro Nakamura , Tetsuya Matsuda

We propose a novel 3D fully convolutional deep network for automated pancreas segmentation from both MRI and CT scans. More specifically, the proposed model consists of a 3D encoder that learns to extract volume features at different…

Image and Video Processing · Electrical Eng. & Systems 2022-06-29 Federica Proietto Salanitri , Giovanni Bellitto , Ismail Irmakci , Simone Palazzo , Ulas Bagci , Concetto Spampinato

Objective: Four-dimensional computed tomography (4DCT) imaging consists in reconstructing a CT acquisition into multiple phases to track internal organ and tumor motion. It is commonly used in radiotherapy treatment planning to establish…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Yi-Heng Cao , Vincent Bourbonne , François Lucia , Ulrike Schick , Julien Bert , Vincent Jaouen , Dimitris Visvikis

This paper presents a method to register a preoperative CT volume to a sparse set of intraoperative US slices. In the context of percutaneous renal puncture, the aim is to transfer a planning information to an intraoperative coordinate…

Medical Physics · Physics 2007-05-23 Antoine Leroy , Pierre Mozer , Yohan Payan , Jocelyne Troccaz

Deep Learning-based 2D/3D registration methods are highly robust but often lack the necessary registration accuracy for clinical application. A refinement step using the classical optimization-based 2D/3D registration method applied in…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Srikrishna Jaganathan , Jian Wang , Anja Borsdorf , Karthik Shetty , Andreas Maier

U-Net has achieved huge success in various medical image segmentation challenges. Kinds of new architectures with bells and whistles might succeed in certain dataset when employed with optimal hyper-parameter, but their generalization…

Image and Video Processing · Electrical Eng. & Systems 2019-08-14 Wenshuai Zhao , Zengfeng Zeng

With an aim to increase the capture range and accelerate the performance of state-of-the-art inter-subject and subject-to-template 3D registration, we propose deep learning-based methods that are trained to find the 3D position of…

Computer Vision and Pattern Recognition · Computer Science 2018-08-21 Seyed Sadegh Mohseni Salehi , Shadab Khan , Deniz Erdogmus , Ali Gholipour

We propose a registration algorithm for 2D CT/MRI medical images with a new unsupervised end-to-end strategy using convolutional neural networks. The contributions of our algorithm are threefold: (1) We transplant traditional image…

Computer Vision and Pattern Recognition · Computer Science 2018-01-23 Siyuan Shan , Wen Yan , Xiaoqing Guo , Eric I-Chao Chang , Yubo Fan , Yan Xu

Chronic Kidney Disease (CKD) constitutes a major global medical burden, marked by the gradual deterioration of renal function, which results in the impaired clearance of metabolic waste and disturbances in systemic fluid homeostasis. Owing…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Anas Bin Ayub , Nilima Sultana Niha , Md. Zahurul Haque

Purpose: Functional imaging is emerging as an important tool for lung cancer treatment planning and evaluation. Compared with traditional methods such as nuclear medicine ventilation-perfusion (VQ), positron emission tomography (PET),…

Objective: Automated segmentation tools are useful for calculating kidney volumes rapidly and accurately. Furthermore, these tools have the power to facilitate large-scale image-based artificial intelligence projects by generating input…

Image and Video Processing · Electrical Eng. & Systems 2024-05-15 Lucas Aronson , Ruben Ngnitewe Massaa , Syed Jamal Safdar Gardezi , Andrew L. Wentland

We propose a novel 3D face recognition algorithm using a deep convolutional neural network (DCNN) and a 3D augmentation technique. The performance of 2D face recognition algorithms has significantly increased by leveraging the…

Computer Vision and Pattern Recognition · Computer Science 2017-04-03 Donghyun Kim , Matthias Hernandez , Jongmoo Choi , Gerard Medioni

Deep Learning-based 2D/3D registration enables fast, robust, and accurate X-ray to CT image fusion when large annotated paired datasets are available for training. However, the need for paired CT volume and X-ray images with ground truth…

Image and Video Processing · Electrical Eng. & Systems 2022-10-17 Srikrishna Jaganathan , Maximilian Kukla , Jian Wang , Karthik Shetty , Andreas Maier

The segmentation of kidney layer structures, including cortex, outer stripe, inner stripe, and inner medulla within human kidney whole slide images (WSI) plays an essential role in automated image analysis in renal pathology. However, the…

Image and Video Processing · Electrical Eng. & Systems 2023-09-07 Muhao Liu , Chenyang Qi , Shunxing Bao , Quan Liu , Ruining Deng , Yu Wang , Shilin Zhao , Haichun Yang , Yuankai Huo

Continuous protocols for cardiac magnetic resonance imaging enable sampling of the cardiac anatomy simultaneously resolved into cardiac phases. To avoid respiration artifacts, associated motion during the scan has to be compensated for…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Elisabeth Hoppe , Jens Wetzl , Philipp Roser , Lina Felsner , Alexander Preuhs , Andreas Maier