Comparative sensitivity analysis between spherical and cylindrical intraventricular impedance imaging catheters

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 been no published results that show which of the available geometries, spherical or cylindrical, is more suitable for an intraventricular catheter. The purpose of this work is to perform a sensitivity analysis on both intraventricular catheters. Numerical simulations were performed using models developed for catheters placed in ellipsoidal heart ventricles. The results indicate that a cylindrical catheter exhibits a greater sensitivity to positional movements and more specificity in calculating the potential distribution on its surface for a given position, when compared with a spherical catheter.<>