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Electrical Bioimpedance Cerebral Monitoring. A Study of the Current Density Distribution and Impedance Sensitivity Maps on a 3D Realistic Head Model
University of Borås, School of Engineering.
University of Borås, School of Engineering.ORCID iD: 0000-0003-4853-7731
2007 (English)In: Proceedings of the 3rd International IEEE EMBS Conference on Neural Engineering, IEEE , 2007Conference paper, Published paper (Refereed)
Abstract [en]

There have been several studies of the application of electrical bioimpedance technology for brain monitoring in the past years. They have targeted a variety of events and injuries e.g. epilepsy or stroke. The current density distribution and the voltage lead field associated with an impedance measurement setup is of critical importance for the proper analysis of any dynamics in the impedance measurement or for an accurate reconstruction of an EIT image, specially a dynamic type. In this work for the first time, the current density distribution is calculated in a human head with anatomical accuracy and resolution down to 1 mm, containing up to 24 tissues and considering the frequency dependency of the conductivity of each tissue. The obtained current densities and the subsequent sensitivity maps are analyzed with a special focus on the dependency of the electrode arrangement and also the measurement frequency. The obtained results provide us with interesting and relevant information to consider in the design of any tool for electrical bioimpedance cerebral monitoring.

Place, publisher, year, edition, pages
IEEE , 2007.
Keywords [en]
electrical bioimpedance, electrical impedance tomography, brain damage, cerebral monitoring, Medicinteknik
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:hb:diva-5750Local ID: 2320/2969OAI: oai:DiVA.org:hb-5750DiVA, id: diva2:886431
Conference
The 3rd International IEEE EMBS Conference on Neural Engineering
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-11-09Bibliographically approved

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Seoane, FernandoLindecrantz, Kaj

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