Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology.

Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology. Research Abstract Details 

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Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology. Abstract Text:

Shuo Yang,Guizhi Xu,Lei Wang,Ying Li,Huanli Wu,

Electrical impedance tomography (EIT) is a noninvasive technique that permits estimation of resistivity within a subject by reconstructing from boundary measurements. The head electrical properties based on EIT technology have been studied by many authors and in most of this work the realistic head model has been considered without contact impedance between the electrodes and the scalp. It is interesting to evaluate the effect of contact impedance on surface potential distributions because the contact impedance and the current density through this contact impedance are both high. In this paper we describe a complete electrode realistic head model that takes into account the presence of the electrode-scalp contact impedance. Using the finite element method (FEM), we get the surface potential distribution curves whose amplitude and shape are affected evidently by the magnitude of the contact impedance. The complete electrode realistic head model can be used to improve the precision of the reconstructed images by EIT.

Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology. Publishing Authors By Initials

S Yang,G Xu,L Wang,Y Li,H Wu,

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Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Conference proceedings : ... Annual International

VOLUME: 5

Page Numbers: 5320-3

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ISSN: 1557-170X

DAY: 6

MONTH: 02

YEAR: 2005

Effect of Contact Impedance on the Head Electrical Properties Based on EIT Technology. Information

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LANGUAGE: eng

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AFFILIATION: Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Heibei University of Technology, Tianjin 300130, China (phone: +86-022-60201524; e-mail: sureyang@126.com).

Country: United States

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MEDLINETA: Conf Proc IEEE Eng Med Biol So

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