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Low-dose CT (LDCT) reduces radiation exposure but introduces protocol-dependent noise and artifacts that vary across institutions. While federated learning enables collaborative training without centralizing patient data, existing methods…

Image and Video Processing · Electrical Eng. & Systems 2026-03-17 Anas Zafar , Muhammad Waqas , Amgad Muneer , Rukhmini Bandyopadhyay , Jia Wu

Low-count positron emission tomography (LCPET) imaging can reduce patients' exposure to radiation but often suffers from increased image noise and reduced lesion detectability, necessitating effective denoising techniques. Diffusion models…

Image and Video Processing · Electrical Eng. & Systems 2025-03-24 Yinchi Zhou , Huidong Xie , Menghua Xia , Qiong Liu , Bo Zhou , Tianqi Chen , Jun Hou , Liang Guo , Xinyuan Zheng , Hanzhong Wang , Biao Li , Axel Rominger , Kuangyu Shi , Nicha C. Dvorneka , Chi Liu

Computed Tomography (CT) imposes risk on the patients due to its inherent X-ray radiation, stimulating the development of low-dose CT (LDCT) imaging methods. Lowering the radiation dose reduces the health risks but leads to noisier…

Image and Video Processing · Electrical Eng. & Systems 2022-11-03 Elvira Zainulina , Alexey Chernyavskiy , Dmitry V. Dylov

Low-count PET is an efficient way to reduce radiation exposure and acquisition time, but the reconstructed images often suffer from low signal-to-noise ratio (SNR), thus affecting diagnosis and other downstream tasks. Recent advances in…

Image and Video Processing · Electrical Eng. & Systems 2023-10-09 Bo Zhou , Huidong Xie , Qiong Liu , Xiongchao Chen , Xueqi Guo , Zhicheng Feng , Jun Hou , S. Kevin Zhou , Biao Li , Axel Rominger , Kuangyu Shi , James S. Duncan , Chi Liu

Standard machine learning approaches require centralizing the users' data in one computer or a shared database, which raises data privacy and confidentiality concerns. Therefore, limiting central access is important, especially in…

Supervised deep learning needs a large amount of labeled data to achieve high performance. However, in medical imaging analysis, each site may only have a limited amount of data and labels, which makes learning ineffective. Federated…

Image and Video Processing · Electrical Eng. & Systems 2022-08-09 Yawen Wu , Dewen Zeng , Zhepeng Wang , Yiyu Shi , Jingtong Hu

Large volumes of medical data remain underutilized because centralizing distributed data is often infeasible due to strict privacy regulations and institutional constraints. In addition, models trained in centralized settings frequently…

Image and Video Processing · Electrical Eng. & Systems 2026-05-12 Puja Saha , Eranga Ukwatta

Chest Computational Tomography (CT) scans present low cost, speed and objectivity for COVID-19 diagnosis and deep learning methods have shown great promise in assisting the analysis and interpretation of these images. Most hospitals or…

Image and Video Processing · Electrical Eng. & Systems 2022-04-08 Antonios Georgiadis , Varun Babbar , Fran Silavong , Sean Moran , Rob Otter

To reduce radiation exposure and improve the diagnostic efficacy of low-dose computed tomography (LDCT), numerous deep learning-based denoising methods have been developed to mitigate noise and artifacts. However, most of these approaches…

Image and Video Processing · Electrical Eng. & Systems 2025-08-12 Runze Wang , Zeli Chen , Zhiyun Song , Wei Fang , Jiajin Zhang , Danyang Tu , Yuxing Tang , Minfeng Xu , Xianghua Ye , Le Lu , Dakai Jin

Since 2016, deep learning (DL) has advanced tomographic imaging with remarkable successes, especially in low-dose computed tomography (LDCT) imaging. Despite being driven by big data, the LDCT denoising and pure end-to-end reconstruction…

Image and Video Processing · Electrical Eng. & Systems 2023-03-28 Wenjun Xia , Hongming Shan , Ge Wang , Yi Zhang

Deep learning has been successfully applied to low-dose CT (LDCT) image denoising for reducing potential radiation risk. However, the widely reported supervised LDCT denoising networks require a training set of paired images, which is…

Machine Learning · Computer Science 2023-02-09 Yuhui Ruan , Qiao Yuan , Chuang Niu , Chen Li , Yudong Yao , Ge Wang , Yueyang Teng

Noise in low-dose computed tomography (LDCT) can obscure important diagnostic details. While deep learning offers powerful denoising, supervised methods require impractical paired data, and self-supervised alternatives often use opaque,…

Image and Video Processing · Electrical Eng. & Systems 2026-02-19 Yipeng Sun , Linda-Sophie Schneider , Siyuan Mei , Jinhua Wang , Ge Hu , Mingxuan Gu , Chengze Ye , Fabian Wagner , Lan Song , Siming Bayer , Andreas Maier

Distributed training can facilitate the processing of large medical image datasets, and improve the accuracy and efficiency of disease diagnosis while protecting patient privacy, which is crucial for achieving efficient medical image…

Image and Video Processing · Electrical Eng. & Systems 2024-04-17 Lisang Zhou , Meng Wang , Ning Zhou

Deep learning-based organs/structures-at-risk(OARs) auto-contouring models can improve radiotherapy workflows, but models trained on adult data often underperform in pediatric patients. Developing robust pediatric-specific models is…

Federated Learning enables decentralized training by aggregating model updates across clients without sharing raw data, while Split Federated Learning further partitions the model between clients and a server to reduce computation and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-07 Chamani Shiranthika , Hadi Hadizadeh , Parvaneh Saeedi

Computed tomography (CT) is of great importance in clinical practice due to its powerful ability to provide patients' anatomical information without any invasive inspection, but its potential radiation risk is raising people's concerns.…

Image and Video Processing · Electrical Eng. & Systems 2024-03-26 Ziyuan Yang , Wenjun Xia , Zexin Lu , Yingyu Chen , Xiaoxiao Li , Yi Zhang

Deep learning (DL) has been increasingly applied in medical imaging, however, it requires large amounts of data, which raises many challenges related to data privacy, storage, and transfer. Federated learning (FL) is a training paradigm…

Computer Vision and Pattern Recognition · Computer Science 2025-10-09 Jan Fiszer , Dominika Ciupek , Maciej Malawski

In the intention of minimizing excessive X-ray radiation administration to patients, low-dose computed tomography (LDCT) has become a distinct trend in radiology. However, while lowering the radiation dose reduces the risk to the patient,…

Medical Physics · Physics 2022-04-12 Long Zhou , Xiaozhuang Wang , Min Hou , Ping Li , Chunlong Fu , Yanjun Ren , Tingting Shao , Xi Hu , Jihong Sun , Hongwei Ye

The collection and curation of large-scale medical datasets from multiple institutions is essential for training accurate deep learning models, but privacy concerns often hinder data sharing. Federated learning (FL) is a promising solution…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Rui Yan , Liangqiong Qu , Qingyue Wei , Shih-Cheng Huang , Liyue Shen , Daniel Rubin , Lei Xing , Yuyin Zhou

Federated learning (FL) offers a privacy-preserving paradigm for collaborative medical image analysis without sharing raw data. However, the absence of standardized benchmarks for medical image segmentation hinders fair and comprehensive…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Meilu Zhu , Zhiwei Wang , Axiu Mao , Yuxing Li , Xiaohan Xing , Yixuan Yuan , Edmund Y. Lam
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