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Related Experiment Video

Updated: Jun 3, 2026

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

A piecewise patch-to-model matching method for image-guided cardiac catheter ablation.

Jiquan Liu¹, Maryam E Rettmann, David R Holmes

¹College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, Zhejiang 310027, China. liujq@zju.edu.cn

Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society

|March 8, 2011

Summary

This study introduces a new method for rapidly matching real-time cardiac surface data to pre-operative models. This technique enhances image-guided procedures like cardiac ablation by improving anatomical visualization.

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Last Updated: Jun 3, 2026

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

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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

Area of Science:

Medical imaging
Computational geometry
Cardiac electrophysiology

Background:

Accurate real-time image fusion is crucial for image-guided procedures, particularly cardiac catheter ablation.
Existing methods face challenges with multi-modality image fusion and non-rigid anatomical deformation.

Purpose of the Study:

To develop a fast and accurate method for matching intra-operative cardiac surface data to pre-operative models.
To address limitations in fusing multi-modality images and handling non-rigid deformations in real-time.

Main Methods:

A piecewise patch-to-model matching technique, a modification of the contractive projection point method.
Utilizes a projection lookup table, K-nearest neighborhood search, and point-to-projection iteration for surface correspondence.
Specifically designed to handle non-rigid deformation between intra-operative surface patches and pre-operative models.

Main Results:

The developed method achieves fast, accurate, and robust real-time matching.
Successfully matches intra-operative surface patches to pre-operative 3D surface models of the left atrium.
Demonstrates effectiveness in fusing multi-modality images and managing non-rigid deformations.

Conclusions:

The piecewise patch-to-model matching method provides a reliable solution for real-time anatomical model registration.
This advancement is critical for improving the precision and efficacy of image-guided cardiac interventions.
The technique offers a robust approach for complex cardiac procedures requiring accurate anatomical data fusion.