NDLI: Effects of anisotropy in a physical torso phantom on source reconstructions from a current dipole

Content Provider	IEEE Xplore Digital Library
Author	Liehr, M. Sengul, G. Baysal, U. Haueisen, J.
Copyright Year	2007
Description	Author affiliation: Univ. Jena, Jena (Liehr, M.)
Abstract	In this study, we investigated experimentally the influence of anisotropic compartments on source reconstruction using phantom measurements with an artificial current dipole as signal source. The anisotropic compartment was built from single skeins with a nine times higher conductivity than the surrounding solution. We placed the dipole at the lower borders of the anisotropic bulk and measured the magnetic field and the electric potential for each dipole location. The current dipole was rotated in relation to the anisotropic skeins and potentials and fields were recorded for different angles between anisotropic skeins and current dipole. We found that the estimated dipole orientations are strongly influenced by the anisotropy, while the reconstructed position of the dipole is not significantly influenced. We conclude that for bioelectric and biomagnetic source reconstruction, it is necessary to take into account anisotropic structures in the volume conductor if dipole orientations are of interest.
Starting Page	82
Ending Page	85
File Size	164638
Page Count	4
File Format	PDF
ISBN	9781424409488
DOI	10.1109/NFSI-ICFBI.2007.4387693
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torso Electric potential Anisotropic magnetoresistance Magnetic field measurement Current measurement Biomagnetics Electric variables measurement Conductivity Imaging phantoms Bioelectric phenomena
Content Type	Text
Resource Type	Article

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