The eikonal equation has become an indispensable tool for modeling cardiac electrical activation accurately and efficiently. In principle, by matching clinically recorded and eikonal-based electrocardiograms (ECGs), it is possible to build patient-specific models of cardiac electrophysiology in a purely non-invasive manner. Nonetheless, the fitting procedure remains a challenging task. The present study introduces a novel method, Geodesic-BP, to solve the inverse eikonal problem. Geodesic-BP is well-suited for GPU-accelerated machine learning frameworks, allowing us to optimize the parameters of the eikonal equation to reproduce a given ECG. We show that Geodesic-BP can reconstruct a simulated cardiac activation with high accuracy in a synthetic test case, even in the presence of modeling inaccuracies. Furthermore, we apply our algorithm to a publicly available dataset of a biventricular rabbit model, with promising results. Given the future shift towards personalized medicine, Geodesic-BP has the potential to help in future functionalizations of cardiac models meeting clinical time constraints while maintaining the physiological accuracy of state-of-the-art cardiac models.
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http://dx.doi.org/10.1109/TBME.2023.3331876 | DOI Listing |
JACC Clin Electrophysiol
December 2024
Cardiac Arrhythmia Service, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
JACC Clin Electrophysiol
December 2024
Kansas City Heart Rhythm Institute and Research Foundation, Kansas City, Kansas, USA. Electronic address:
Left atrial appendage occlusion (LAAO) has become an important therapeutic target for stroke prevention in patients with nonvalvular atrial fibrillation. Over the past 2 decades, several advancements in LAAO devices (percutaneous and surgical) have been made for stroke prevention and arrhythmia therapy. However, there are several unanswered questions regarding optimal patient selection, the preferred LAAO approach and device, the management of periprocedural and postprocedural complications, including pericardial effusion, device-related thrombus, and device leaks.
View Article and Find Full Text PDFJACC Clin Electrophysiol
December 2024
St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom; William Harvey Research Institute, Queen Mary University of London, London, United Kingdom. Electronic address:
Background: The sympathetic autonomic nervous system plays a major role in arrhythmia development and maintenance. Historical preclinical studies describe preferential increases in cardiac sympathetic tone upon selective stimulation of the subclavian ansae (SA), a nerve cord encircling the subclavian artery.
Objectives: This study sought to define, for the first time, the functional anatomy and physiology of the SA in humans using a percutaneous approach.
Turk Kardiyol Dern Ars
January 2025
Department of Cardiology, University of Health Sciences, Derince Training and Research Hospital, Kocaeli, Türkiye.
Cardiac implantable electronic device (CIED) implantation is a diagnostic and therapeutic method that is being employed on a growing number of patients globally. These devices require long-term follow-up and monitoring, and after implantation, regular follow-ups are conducted at specific intervals. These follow-ups provide crucial information about both the device and the patient, aiding in diagnosis and guiding treatment.
View Article and Find Full Text PDFJ Clin Med
January 2025
Division of Cardiology, Department of Internal Medicine, Bassett Medical Center, 1 Atwell Rd, Cooperstown, NY 13326, USA.
: Leadless pacemakers offer a safe and effective alternative pacing strategy. However, limited data are available for patients with end stage renal disease (ESRD), a population of significant relevance. Using the Nationwide Readmission Database, we extracted data from all adult patients with ESRD who underwent traditional transvenous or leadless pacemaker implantation between 2016 and 2021.
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