Modeling of realistic heart electrical excitation based on DTI scans and modified reaction diffusion equation

Authors : İhab ELAFF

Pages : 1153-1163

View : 14 | Download : 13

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new method is proposed for modeling realistic heart activation using diffusion tensor imaging insert ignore into journalissuearticles values(DTI); scans based on biological properties of its tissues in addition to the working methodology of the DTI scanner. Modeling of the excitation propagation inside the heart is initiated by applying activation at only one pacing site at the root of the conduction network. The excitation propagation has been accomplished based on a proposed conduction system that is extracted from DTI heart scans and a modified version of monodomain reaction diffusion equation insert ignore into journalissuearticles values(RDE); that considers the heart inhomogeneous--anisotropic material. The Aliev--Panfilov method was used to model the reaction part of the equation and inhomogeneous--anisotropic diffusion to model the diffusion part in the equation. Variation in conduction speeds between the myocardium and the conduction system has been also taken into consideration. Employing the proposed conduction system and the modified RDE on the heart model shows insert ignore into journalissuearticles values(somewhat); realistic heart activation where the produced ventricular excitation propagation isochrones are similar to real measurements.
Keywords : Reaction diffusion equation, heart, activation, excitation propagation, conduction system, Purkinje, diffusion tensor imaging