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Updated: May 15, 2026
Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
Published on: April 11, 2025
Confirmation of novel noninvasive high-density electrocardiographic mapping with electrophysiology study:
Ivan Cakulev1, Jayakumar Sahadevan, Mauricio Arruda
1Division of Cardiovascular Medicine, Department of Medicine, Harrington Heart and Vascular Institute, University Hospitals Case Medical Center, Cleveland, OH 44106, USA.
Insights
Noninvasive electrocardiographic mapping (ECM) accurately identifies arrhythmia origins, correlating well with invasive studies for conditions like Wolff-Parkinson-White syndrome and ventricular tachycardia.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Imaging
Background:
- Standard 12-lead ECGs have limitations in precisely identifying atrial and ventricular activation during complex arrhythmias.
- Accurate localization of activation during accessory atrioventricular conduction and other arrhythmias is clinically challenging.
Purpose of the Study:
- To validate a novel, noninvasive, whole-heart, beat-by-beat, 3-dimensional mapping technology.
- To compare the novel technology's findings with invasive electrophysiological studies.
Main Methods:
- Utilized an electrocardiographic mapping (ECM) system in 27 patients.
- Generated 3D epicardial activation maps from >250 body surface ECGs and CT-derived heart-torso geometry.
- Compared ECM maps with clinical diagnoses and invasive electrophysiological study findings.
Main Results:
- ECM accurately identified accessory atrioventricular connection sites in 6 Wolff-Parkinson-White syndrome cases.
- Identified the origin of premature ventricular complexes in 8 of 10 patients.
- Accurately localized the chamber of origin in 10 atrial tachycardia/flutter cases and distinguished flutter types.
- Pinpointed the focal origin of ventricular tachycardia in 1 patient.
Conclusions:
- Noninvasive ECM successfully generated valid activation sequence maps for various rhythm disorders.
- ECM findings demonstrated good correlation with results from invasive electrophysiological studies.
Background:
Twelve lead ECGs have limited value in precisely identifying atrial and ventricular activation during arrhythmias, including accessory atrioventricular conduction activation. The aim of this study was to report a single center's clinical experience validating a novel, noninvasive, whole heart, beat-by-beat, 3-dimensional mapping technology with invasive electrophysiological studies, including ablation, where applicable.
Methods And Results:
Using an electrocardiographic mapping (ECM) system in 27 patients, 3-dimensional epicardial activation maps were generated from >250 body surface ECGs using heart-torso geometry obtained from computed tomographic images. ECM activation maps were compared with clinical diagnoses, and confirmed with standard invasive electrophysiological studies mapping. (1) In 6 cases of Wolff-Parkinson-White syndrome, ECM accurately identified the ventricular insertion site of an accessory atrioventricular connection. (2) In 10 patients with premature ventricular complexes, ECM accurately identified their ventricular site of origin in 8 patients. In 2 of 10 patients transient premature ventricular complex suppression was observed during ablation at the site predicted by ECM as the earliest. (3) In 10 cases of atrial tachycardia/atrial flutter, ECM accurately identified the chamber of origin in all 10, and distinguished isthmus from nonisthmus dependent atrial flutter. (4) In 1 patient with sustained exercise induced ventricular tachycardia, ECM accurately identified the focal origin in the left ventricular outflow tract.
Conclusions:
ECM successfully provided valid activation sequence maps obtained noninvasively in a variety of rhythm disorders that correlated well with invasive electrophysiological studies.
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