An Inverse Model for Localization of Low-diffusivity Regions in the Heart Using Ecg/Mcg Sensor Arrays

摘要：

Cardiac activation and consequently performance of the heart can be severely affected by certain electrophysiological anomalies such as irregular patterns in the activation of the heart. Since the wavefront propagation occurs through the diffusion of ions (Na+, K+, etc.) the reduced mobility of ions can be equivalently represented as a reduction of ionic diffusivity causing irregularities in heartbeats. In this paper we propose models for the cardiac activation using inhomogeneous reaction-diffusion equations in the presence of diffusivity disorders. We also derive corresponding statistical signal processing algorithms for estimating (localizing) parameters describing these anomalies. We illustrate applicability of our techniques and demonstrate the identifiability of the parameters through numerical examples using a realistic geometry.

作者: Ashraf Atalla Aleksandar Jeremic

作者单位: Department of Electrical and Computer Engineering,McMaster University,Hamilton,Ontario,Canada

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2008-03-24（万方平台首次上网日期，不代表论文的发表时间）