Related Experiment Video

Updated: Aug 18, 2026

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
06:57

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

Catheter ablation of ventricular tachycardia guided by contrast-enhanced cardiac computed tomography

David Bello1, Samuel Kipper, Miguel Valderrábano

  • 1Section of Cardiac Electrophysiology University of California, Irvine Medical Center, Los Angeles, 90095, USA.

Heart Rhythm
|April 27, 2005
PubMed

Insights

High-resolution cardiac CT can precisely define myocardial scar for catheter ablation of ventricular tachycardia. This technique may shorten electrophysiology lab mapping times, improving patient outcomes.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Electrophysiology

Background:

  • Recurrent ventricular tachycardia (VT) is often caused by myocardial scar.
  • Catheter ablation is a common treatment for VT, but precise scar identification is crucial.
  • Current methods for scar definition, like electroanatomic mapping, can be time-consuming.

Observation:

  • Contrast-enhanced cardiac computed tomography (CT) was used to visualize myocardial infarct scar with high resolution.
  • Positron emission tomography (PET) and 3D electroanatomic mapping confirmed the scar extent before ablation.
  • Catheter ablation guided by this detailed scar imaging was performed.

Findings:

  • The catheter ablation successfully eliminated the recurrent ventricular tachycardia.
  • Cardiac CT provided a high-resolution definition of the myocardial scar, guiding the ablation strategy.
  • This approach demonstrated the potential to reduce the need for extensive voltage/substrate mapping in the electrophysiology lab.

Implications:

  • Cardiac CT imaging offers a novel method for defining myocardial scar for VT ablation.
  • This technique may streamline the ablation procedure, potentially reducing procedural time and improving efficiency.
  • Further research could validate the use of cardiac CT for VT ablation planning and execution.

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