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Related Experiment Video

Updated: May 23, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Intraoperative electroanatomic mapping.

Takashi Nitta¹, Jiro Kurita, Hiroshige Murata

¹Division of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan. nitta@nms.ac.jp

The Annals of Thoracic Surgery

|March 28, 2012

Summary

This summary is machine-generated.

This study demonstrates that an electroanatomic mapping system precisely locates arrhythmia substrates during surgery. This electromagnetic navigation technology aids in successful map-guided procedures for ventricular tachycardia.

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Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

Area of Science:

Cardiovascular Electrophysiology
Medical Device Technology
Surgical Navigation Systems

Background:

Arrhythmias like ventricular tachycardia pose significant clinical challenges.
Accurate localization of arrhythmia substrates is crucial for effective treatment.
Existing mapping techniques may have limitations in precision and intraoperative utility.

Purpose of the Study:

To evaluate the feasibility and efficacy of an electroanatomic mapping system utilizing electromagnetic navigation for intraoperative cardiac mapping.
To assess the system's ability to construct accurate 3-dimensional heart models and precisely localize arrhythmia substrates.
To determine the system's utility in guiding surgical procedures for arrhythmias.

Main Methods:

The system employs electromagnetic navigation, measuring magnetic field strength via a location sensor and pad to determine spatial location.
A catheter is maneuvered across the heart's surface, simultaneously recording local electrograms.
3-dimensional heart geometry is reconstructed, generating activation or voltage maps.

Main Results:

The system was successfully applied in 19 patients undergoing procedures for ventricular tachycardia or other arrhythmias.
Precise localization of tachycardia foci and reentrant circuits was achieved in all cases.
Map-guided procedures were successfully performed, with cardiopulmonary bypass enabling mapping without hemodynamic compromise.

Conclusions:

Intraoperative mapping with this electroanatomic mapping system allows for precise identification of tachycardia substrates.
The technology offers a feasible and effective approach for guiding arrhythmia ablation procedures.
High geometric accuracy in 3D heart reconstruction facilitates targeted surgical interventions.