Title :
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
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;
Conference_Titel :
Computers in Cardiology, 1988. Proceedings.
Conference_Location :
Washington, DC
Print_ISBN :
0-8186-1949-X
DOI :
10.1109/CIC.1988.72643
