Three dimensional finite element model of electric fields in internal defibrillation

Author

Thakor, N. ; Kothiyal, K. ; Shankar, R. ; Fogelson, L.

Author_Institution

Dept. of Biomed. Eng., Johns Hopkins Sch. of Med., Baltimore, MD, USA

fYear

1988

fDate

25-28 Sep 1988

Firstpage

395

Lastpage

398

Abstract

A study of electric fields in internal defibrillation is conducted to determine optimum configurations for energy delivery. A three-dimensional model of the heart is constructed from 1473 cubic elements. The electric field is determined by finite-element analysis. Three electrode configurations (patch-patch, catheter-patch, and catheter-catheter) are evaluated. The simulations show that (1) the patch-patch configurations best delivers energy to the myocardium, and (2) electrode placement and size have minimal effect on the total energy delivered to the myocardium, and (3) nonuniform distributions and high current concentrations and edge effects are nevertheless observed

Keywords

bioelectric phenomena; cardiology; finite element analysis; patient treatment; physiological models; 3D finite element model; catheter-catheter configuration; catheter-patch configuration; cubic elements; current concentration; edge effects; electric fields; electrode configuration; internal defibrillation; myocardium; patch-patch configuration; Conductivity; Conductors; Current density; Defibrillation; Electric shock; Electrodes; Finite element methods; Heart; Myocardium; Thorax;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 1988. Proceedings.

Conference_Location

Washington, DC

Print_ISBN

0-8186-1949-X

Type

conf

DOI

10.1109/CIC.1988.72643

Filename

72643