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This study proposes an end-to-end unsupervised diffeomorphic deformable registration framework based on moving mesh parameterization. Using this parameterization, a deformation field can be modeled with its transformation Jacobian…

Image and Video Processing · Electrical Eng. & Systems 2022-08-30 Ameneh Sheikhjafari , Deepa Krishnaswamy , Michelle Noga , Nilanjan Ray , Kumaradevan Punithakumar

Atrial Fibrillation is a heart condition characterized by erratic heart rhythms caused by chaotic propagation of electrical impulses in the atria, leading to numerous health complications. State-of-the-art models employ complex algorithms…

Quantitative Methods · Quantitative Biology 2019-12-02 Paul Samuel Ignacio , David Uminsky , Christopher Dunstan , Esteban Escobar , Luke Trujillo

Echocardiography is the only technique capable of real-time imaging of the heart and is vital for diagnosing the majority of cardiac diseases. However, there is a severe shortage of experienced cardiac sonographers, due to the heart's…

Image and Video Processing · Electrical Eng. & Systems 2024-10-22 Haojun Jiang , Zhenguo Sun , Ning Jia , Meng Li , Yu Sun , Shaqi Luo , Shiji Song , Gao Huang

Mathematical models are essential tools to study how the cardiovascular system maintains homeostasis. The utility of such models is limited by the accuracy of their predictions, which can be determined by uncertainty quantification (UQ). A…

Quantitative Methods · Quantitative Biology 2018-07-20 Andrew D. Marquis , Andrea Arnold , Caron Dean , Brian E. Carlson , Mette S. Olufsen

The oscillations of the human heart rate are inherently complex and non-linear -- they are best described by mathematical chaos, and they present a challenge when applied to the practical domain of cardiovascular health monitoring in…

Machine Learning · Computer Science 2025-11-03 Berken Utku Demirel , Christian Holz

Doppler echocardiography offers critical insights into cardiac function and phases by quantifying blood flow velocities and evaluating myocardial motion. However, previous methods for automating Doppler analysis, ranging from initial signal…

Image and Video Processing · Electrical Eng. & Systems 2023-11-16 Jaeik Jeon , Jiyeon Kim , Yeonggul Jang , Yeonyee E. Yoon , Dawun Jeong , Youngtaek Hong , Seung-Ah Lee , Hyuk-Jae Chang

Recent advances have increasingly applied large language models (LLMs) to electrocardiogram (ECG) interpretation, giving rise to Electrocardiogram-Language Models (ELMs). Conditioned on an ECG and a textual query, an ELM autoregressively…

Artificial Intelligence · Computer Science 2025-05-27 William Han , Chaojing Duan , Zhepeng Cen , Yihang Yao , Xiaoyu Song , Atharva Mhaskar , Dylan Leong , Michael A. Rosenberg , Emerson Liu , Ding Zhao

The complex dynamics of the heart are reflected in its electrical activity, captured through electrocardiograms (ECGs). In this study we use nonlinear time series analysis to understand how ECG complexity varies with cardiac pathology.…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Camilo Quiceno Quintero , Sandip Varkey George

Ensuring timely and accurate diagnosis of medical conditions is paramount for effective patient care. Electrocardiogram (ECG) signals are fundamental for evaluating a patient's cardiac health and are readily available. Despite this, little…

Signal Processing · Electrical Eng. & Systems 2025-11-21 Juan Miguel Lopez Alcaraz , Nils Strodthoff

Echocardiography is the most commonly used imaging technique in clinical cardiology. Due to the high demand for this type of examination and the small number of specialists, there is a need to support the examination process through…

Over the course of the past two decades, a substantial body of research has substantiated the viability of utilising cardiac signals as a biometric modality. This paper presents a novel approach for patient identification in healthcare…

Machine Learning · Computer Science 2024-11-27 Caterina Fuster-Barceló , Carmen Cámara , Pedro Peris-López

Electrocardiogram is a useful diagnostic signal that can detect cardiac abnormalities by measuring the electrical activity generated by the heart. Due to its rapid, non-invasive, and richly informative characteristics, ECG has many emerging…

Machine Learning · Computer Science 2025-12-09 Hanhui Deng , Xinglin Li , Jie Luo , Di Wu

Cardiovascular diseases are the leading cause of death and disability in the world and thus their detection is extremely important as early as possible so that it can be prognosed and managed appropriately. Hence, electrophysiological…

Medical Physics · Physics 2024-03-07 Sourav Chowdhury , Apratim Ghosal , Suparna Roychowhury , Indranath Chaudhuri

On the basis of the model of the current flow through a single fibre, changes in the electric charge density over the myocardium are described. With the use of relevant analytic formulae, supported with numerical calculations, the…

Medical Physics · Physics 2007-05-23 Jerzy S. Janicki

In this paper, we focus on a new method of data augmentation to solve the data imbalance problem within imbalanced ECG datasets to improve the robustness and accuracy of heart disease detection. By using Optimal Transport, we augment the…

Signal Processing · Electrical Eng. & Systems 2023-02-20 Jielin Qiu , Jiacheng Zhu , Mengdi Xu , Peide Huang , Michael Rosenberg , Douglas Weber , Emerson Liu , Ding Zhao

The rapid advancements in Artificial Intelligence, specifically Machine Learning (ML) and Deep Learning (DL), have opened new prospects in medical sciences for improved diagnosis, prognosis, and treatment of severe health conditions. This…

Machine Learning · Computer Science 2024-12-11 Atit Pokharel , Shashank Dahal , Pratik Sapkota , Bhupendra Bimal Chhetri

Electrocardiogram (ECG) is one of the most convenient and non-invasive tools for monitoring peoples' heart condition, which can use for diagnosing a wide range of heart diseases, including Cardiac Arrhythmia, Acute Coronary Syndrome, et al.…

Signal Processing · Electrical Eng. & Systems 2020-07-08 Shenda Hong , Zhaoji Fu , Rongbo Zhou , Jie Yu , Yongkui Li , Kai Wang , Guanlin Cheng

Although electrocardiograms (ECG) play a dominant role in cardiovascular diagnosis and treatment, their intrinsic data forms and representational patterns pose significant challenges for medical multimodal large language models (Med-MLLMs)…

Intracardiac flow patterns are shaped by the coupled motion of the cardiac chambers and heart valves and provide important information about cardiac function. However, clinical flow imaging remains limited by exam times, noise, resolution,…

Image and Video Processing · Electrical Eng. & Systems 2026-05-12 Fanwei Kong , Aaron Brown , Michael Loecher , Perry S. Choi , Lei Shi , Michael Ma , Daniel B. Ennis , Alison Marsden

Emotion plays a significant role in our daily life. Recognition of emotion is wide-spread in the field of health care and human-computer interaction. Emotion is the result of the coordinated activities of cortical and subcortical neural…