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Deep learning is a popular and powerful tool in computed tomography (CT) image processing such as organ segmentation, but its requirement of large training datasets remains a challenge. Even though there is a large anatomical variability…

图像与视频处理 · 电气工程与系统科学 2020-02-06 Chi Nok Enoch Kan , Najibakram Maheenaboobacker , Dong Hye Ye

Quantification of cardiac structures in non-contrast CT (NCCT) could improve cardiovascular risk stratification. However, setting a manual reference to train a fully convolutional network (FCN) for automatic segmentation of NCCT images is…

图像与视频处理 · 电气工程与系统科学 2019-08-22 Steffen Bruns , Jelmer M. Wolterink , Robbert W. van Hamersvelt , Tim Leiner , Ivana Išgum

Contrast-enhanced computed tomography angiograms (CTAs) are widely used in cardiovascular imaging to obtain a non-invasive view of arterial structures. However, contrast agents are associated with complications at the injection site as well…

图像与视频处理 · 电气工程与系统科学 2020-03-04 Anirudh Chandrashekar , Ashok Handa , Natesh Shivakumar , Pierfrancesco Lapolla , Vicente Grau , Regent Lee

The standard non-invasive imaging technique used to assess the severity and extent of Coronary Artery Disease (CAD) is Coronary Computed Tomography Angiography (CCTA). However, manual grading of each patient's CCTA according to the…

Background: Coronary angiography (CAG) is a cornerstone imaging modality for assessing coronary artery disease and guiding interventional treatment decisions. However, in real-world clinical settings, angiographic images are often…

计算机视觉与模式识别 · 计算机科学 2026-01-23 Jingsong Xia , Siqi Wang

With the rise of large radio interferometric telescopes, particularly the SKA, there is a growing demand for computationally efficient image reconstruction techniques. Existing reconstruction methods, such as the CLEAN algorithm or proximal…

天体物理仪器与方法 · 物理学 2025-07-30 Matthijs Mars , Tobías I. Liaudat , Jessica J. Whitney , Marta M. Betcke , Jason D. McEwen

Dynamic contrast enhanced computed tomography (CT) is an imaging technique that provides critical information on the relationship of vascular structure and dynamics in the context of underlying anatomy. A key challenge for image processing…

Precise segmentation is a vital first step to analyze semantic information of cardiac cycle and capture anomaly with cardiovascular signals. However, in the field of deep semantic segmentation, inference is often unilaterally confounded by…

信号处理 · 电气工程与系统科学 2022-09-20 Xingyao Wang , Yuwen Li , Hongxiang Gao , Xianghong Cheng , Jianqing Li , Chengyu Liu

Coronary artery stenosis is a critical health risk, and its precise identification in Coronary Angiography (CAG) can significantly aid medical practitioners in accurately evaluating the severity of a patient's condition. The complexity of…

计算机视觉与模式识别 · 计算机科学 2023-11-20 In Kyu Lee , Junsup Shin , Yong-Hee Lee , Jonghoe Ku , Hyun-Woo Kim

Computed Tomography (CT) plays a pivotal role in medical diagnosis; however, variability across reconstruction kernels hinders data-driven approaches, such as deep learning models, from achieving reliable and generalized performance. To…

图像与视频处理 · 电气工程与系统科学 2026-02-16 Francesco Di Feola , Ludovica Pompilio , Cecilia Assolito , Valerio Guarrasi , Paolo Soda

This study proposes an efficient neural network with convolutional layers to classify significantly class-imbalanced clinical data. The data are curated from the National Health and Nutritional Examination Survey (NHANES) with the goal of…

定量方法 · 定量生物学 2020-04-24 Aniruddha Dutta , Tamal Batabyal , Meheli Basu , Scott T. Acton

Early detection and diagnosis of coronary artery disease (CAD) could save lives and reduce healthcare costs. The current clinical practice is to perform CAD diagnosis through analysing medical images from computed tomography coronary…

Real-world recommender system needs to be regularly retrained to keep with the new data. In this work, we consider how to efficiently retrain graph convolution network (GCN) based recommender models, which are state-of-the-art techniques…

机器学习 · 计算机科学 2022-03-02 Sihao Ding , Fuli Feng , Xiangnan He , Yong Liao , Jun Shi , Yongdong Zhang

Coronary artery disease (CAD) remains the leading cause of death globally and invasive coronary angiography (ICA) is considered the gold standard of anatomical imaging evaluation when CAD is suspected. However, risk evaluation based on ICA…

Diversity in data is critical for the successful training of deep learning models. Leveraged by a recurrent generative adversarial network, we propose the CT-SGAN model that generates large-scale 3D synthetic CT-scan volumes ($\geq…

图像与视频处理 · 电气工程与系统科学 2021-11-08 Ahmad Pesaranghader , Yiping Wang , Mohammad Havaei

Electrocardiogram (ECG) biometrics have emerged as a promising modality for continuous, liveness-aware authentication in wearable systems. However, many prior studies report overly optimistic results due to data leakage (e.g., random splits…

机器学习 · 计算机科学 2026-05-05 Milad Parvan

In representation learning, Convolutional Sparse Coding (CSC) enables unsupervised learning of features by jointly optimising both an \(\ell_2\)-norm fidelity term and a sparsity enforcing penalty. This work investigates using a…

图像与视频处理 · 电气工程与系统科学 2021-07-15 Perla Mayo , Oktay Karakuş , Robin Holmes , Alin Achim

COVID-19 has become a global pandemic and is still posing a severe health risk to the public. Accurate and efficient segmentation of pneumonia lesions in CT scans is vital for treatment decision-making. We proposed a novel unsupervised…

图像与视频处理 · 电气工程与系统科学 2021-11-24 Chengyijue Fang , Yingao Liu , Mengqiu Liu , Xiaohui Qiu , Ying Liu , Yang Li , Jie Wen , Yidong Yang

Computed Tomography Coronary Angiography (CTCA) is a non-invasive method to evaluate coronary artery anatomy and disease. CTCA is ideal for geometry reconstruction to create virtual models of coronary arteries. To our knowledge there is no…

计算机视觉与模式识别 · 计算机科学 2022-11-04 Ramtin Gharleghi , Dona Adikari , Katy Ellenberger , Mark Webster , Chris Ellis , Arcot Sowmya , Sze-Yuan Ooi , Susann Beier

The variability in ECG readings influenced by individual patient characteristics has posed a considerable challenge to adopting automated ECG analysis in clinical settings. A novel feature fusion technique termed SACC (Self Attentive…

信号处理 · 电气工程与系统科学 2025-02-25 Shreya Srivastava , Durgesh Kumar , Ram Jiwari , Sandeep Seth , Deepak Sharma