Electrical and anatomical imaging of arrhythmogenic substrates for scar-related ventricular tachycardia

Omar A. Gharbia, Susumu Tao, Albert C. Lardo, Henry Halperin, Linwei Wang

Research output: Contribution to journalConference articlepeer-review


Sustained ventricular tachycardia (VT) often involves a reentry circuit formed by narrow channels of surviving tissue within the scar. Catheter ablation is an effective technique to intercept the circuit by targeting these critical channels. The success of VT ablation relies on our ability to assess the mechanism of the VT circuit and identify the location of the ablation targets. This study aims to analyze the VT substrate using high-resolution anatomical and electrical imaging techniques including contact EGM mapping, contrast-enhanced cardiac magnetic resonance (CMR) imaging, and noninvasive electrocardio-graphic (ECG) imaging. The results indicate that joint electro-anatomical analysis could reveal critical isthmus of the VT circuit. In addition, ECG-imaging was able to identify sites of a scar and signal fractionation visually consistent with the other two modalities, and the reconstructed VT circuit revealed an exit around the critical site identified by combined CMR-EGM data.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalComputing in Cardiology
StatePublished - 2017
Event44th Computing in Cardiology Conference, CinC 2017 - Rennes, France
Duration: Sep 24 2017Sep 27 2017

ASJC Scopus subject areas

  • Computer Science(all)
  • Cardiology and Cardiovascular Medicine


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