NDLI: Simulation of electrode impedance and current densities near an atherosclerotic lesion

Content Provider	IEEE Xplore Digital Library
Author	Stiles, D.K. Oakley, B.
Copyright Year	2002
Description	Author affiliation: Sch. of Eng. & Comput. Sci., Oakland Univ., MI, USA (Stiles, D.K.; Oakley, B.)
Abstract	A four-point electrode measuring impedance in the vicinity of an atherosclerotic lesion was modeled using FEM software. The simulation modeled the electrodes as being attached to an angioplasty balloon in a coronary artery. Impedance was calculated when the "balloon" was uninflated (not in contact with the lesion) and inflated (in contact with the lesion). Additionally, different lesion types (Va and Vb, as defined by the American Heart Association) and the effects of the low-conductivity calcium layer were considered. Results showed that the real component of the impedance was much higher when the electrodes were in contact with lesion. When the electrodes were not in contact with the lesion, the real component was low. Also, when the electrodes were in direct physical contact with the lesion, the difference between various lesion morphologies could be seen by observing the differences in the imaginary and phase component of the impedance. As a consequence of these simulations, it appears plausible that four-point electrodes mounted to an angioplasty balloon may be useful in determining whether a balloon has made contact with a lesion, and in characterizing that lesion.
Starting Page	57
Ending Page	61
File Size	1094397
Page Count	5
File Format	PDF
ISBN	0780374800
DOI	10.1109/MMB.2002.1002264
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Current density Lesions Angioplasty Impedance measurement Software measurement Arteries Heart Calcium Morphology
Content Type	Text
Resource Type	Article

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