Equivalent isotropic conductivity image reconstruction in MREIT

Jin Keun Seo, Byung Il Lee, Eung Je Woo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Magnetic Resonance Electrical Impedance Tomography (MREIT) provides cross-sectional images of a conductivity distribution inside an electrically conducting object such as the human body. Injecting multiple currents into an imaging object and measuring induced magnetic flux densities, MREIT image reconstruction algorithms such as the harmonic Bz algorithm produce isotropic conductivity images of the object. Noting that conductivities of certain biological tissues including white matters in the brain are known to be anisotropic, we provide a way to interpret reconstructed images based on the analysis about how an anisotropic conductivity is handled in the harmonic B z algorithm. We found that reconstructed equivalent isotropic conductivity values are strongly affected by the shape of an anisotropic region in the two-dimensional imaging plane. When an anisotropic tissue is longer in one direction, its equivalent isotropic conductivity value follows the component of the anisotropic conductivity tensor in that direction. The dependency of the equivalent isotropic conductivity on the shape of an anisotropic tissue could be advantageous since it allows us to estimate the direction of the tissue when we are provided with some qualitative a priori knowledge on the anisotropy of the tissue.

Original languageEnglish
Title of host publicationProc. of 2007 Joint Meet. of the 6th Int. Symp. on Noninvasive Functional Source Imaging of the Brain and Heart and the Int. Conf. on Functional Biomedical Imaging, NFSI and ICFBI 2007
Pages209-212
Number of pages4
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 Joint Meeting of the 6th International Symposium on Noninvasive Functional Source Imaging of the Brain and Heart and the International Conference on Functional Biomedical Imaging, NFSI and ICFBI 2007 - Hangzhou, China
Duration: 2007 Oct 122007 Oct 14

Publication series

NameProc. of 2007 Joint Meet. of the 6th Int. Symp. on Noninvasive Functional Source Imaging of the Brain and Heart and the Int. Conf. on Functional Biomedical Imaging, NFSI and ICFBI 2007

Other

Other2007 Joint Meeting of the 6th International Symposium on Noninvasive Functional Source Imaging of the Brain and Heart and the International Conference on Functional Biomedical Imaging, NFSI and ICFBI 2007
CountryChina
CityHangzhou
Period07/10/1207/10/14

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All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

Cite this

Seo, J. K., Lee, B. I., & Woo, E. J. (2007). Equivalent isotropic conductivity image reconstruction in MREIT. In Proc. of 2007 Joint Meet. of the 6th Int. Symp. on Noninvasive Functional Source Imaging of the Brain and Heart and the Int. Conf. on Functional Biomedical Imaging, NFSI and ICFBI 2007 (pp. 209-212). [4387730] (Proc. of 2007 Joint Meet. of the 6th Int. Symp. on Noninvasive Functional Source Imaging of the Brain and Heart and the Int. Conf. on Functional Biomedical Imaging, NFSI and ICFBI 2007). https://doi.org/10.1109/NFSI-ICFBI.2007.4387730