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A Multi-Zone Finite Element Model for Radiofrequency Ablation of an Infarcted Cardiac Tissue

[+] Author Affiliations
Fan Zhou, Ying Sun, Jacques Beaumont

State University of New York at Binghamton, Binghamton, NY

Paper No. SBC2007-176090, pp. 73-74; 2 pages
doi:10.1115/SBC2007-176090
From:
  • ASME 2007 Summer Bioengineering Conference
  • ASME 2007 Summer Bioengineering Conference
  • Keystone, Colorado, USA, June 20–24, 2007
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4798-5
  • Copyright © 2007 by ASME

abstract

A large number of modern day medical interventions rely on RF ablation. It has become the treatment of choice for many types of cardiac arrhythmia to prevent the reentrant circuits [1]. However, excessive heating during RF ablation up to 100°C can cause microexplosions and severe bleeding [2]. Optimizing parameters for RF ablation in order to produce small lesions with a minimal amount of damage and bleeding constitutes a major challenge. Utilizing a thermo-electric conduction model, we address this problem for the treatment of cardiac arrhythmia. Our objective is to provide means by which non-invasive cardiac imaging data can be used to determine optimal parameters of RF ablation. A three-dimensional (3-D) finite element (FE) model that includes healthy, infarcted, and slow conducting tissues is developed. The temperature dependent thermal and electrical conductivities are considered for different tissue types.

Copyright © 2007 by ASME

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