Electric field penetration depth of myocardial surface catheters and the measurement of myocardial resistivity

被引：0

作者：

Kottam, A ^{[1
]}

Pearce, JA ^{[1
]}

机构：

[1] Univ Texas, Austin, TX 78712 USA

来源：

BIOMEDICAL SCIENCES INSTRUMENTATION, VOL 40 | 2004年 / 449卷

关键词：

tetrapolar; conductance; volume; electric field; myocardium;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The in vivo measurement of cardiac conductance in mice offers a method to generate all instantaneous left ventricular volume signal. In order to translate the measured conductance to volume, it is necessary to determine the resistivity of the myocardial tissue. This is done using tetrapolar surface conductance catheters, placed oil the surface of the left ventricle. It is important to determine the depth of penetration of the electric field of this surface catheter to ensure that the electric field is confined within the myocardium and does not extend into the left ventricle blood volume. The depth of penetration is experimentally determined by a technique described by Foster et al. [2].

引用

页码：155 / 160

页数：6