NDLI: Influence of media parameters on potentials measured with an intracardiac conductance catheter-simulation studies

Content Provider	IEEE Xplore Digital Library
Author	Walker, G.W. Kun, S. Peura, R.A.
Copyright Year	1994
Description	Author affiliation: Dept. of Biomed. Eng., Worcester Polytech. Inst., MA, USA (Walker, G.W.; Kun, S.; Peura, R.A.)
Abstract	An intraventricular impedance imaging (III) system, that will be used for assessing electrical and mechanical cardiac properties, via an intraventricular catheter, is presently under development. There have not been sufficient published results on how the electrical properties of the media effect intraventricular potential measurements/calculations. The purpose of this work is to perform a sensitivity analysis on the myocardium and thorax resistivities and myocardium thickness, to determine how will changing these parameters effect the measured/calculated intraventricular potentials. Numerical simulations were performed using a model developed for a cylindrical catheter placed in an ellipsoidal heart ventricle. The simulations indicate that as the ratio of thorax to myocardium resistivity increases, the calculated potentials increase. The simulations also indicate that as the myocardium thickness increases, the calculated potentials decrease. An increase/decrease in the measured/calculated potentials would indicate an under/overestimation in ventricular volume by the III system.<>
Starting Page	884
Ending Page	885
File Size	276500
Page Count	2
File Format	PDF
ISBN	0780320506
DOI	10.1109/IEMBS.1994.415195
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Myocardium Catheters Thorax Conductivity Impedance Mechanical factors Electric variables measurement Performance evaluation Sensitivity analysis Thickness measurement
Content Type	Text
Resource Type	Article

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