Local harmonic Bz algorithm in MREIT

Sungwhan Kim, Jin Keun Seo, Sungwan Kim, Eung Je Woo, Kiwan Jun, Chang Ok Lee

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

Abstract

In magnetic resonance electrical impedance tomography (MREIT) where we try to reconstruct conductivity images with high spatial resolution, we should generate at least two non-parallel internal current density distributions by sequentially injecting multiple independent currents. However, when the object has a relatively very low conductivity region, the direction of current density due to any injection current becomes tangential to the boundary of the region. This kind of regions may include bones, lungs, and air-filled stomach. Hence, the previous MREIT reconstruction algorithms fail to provide accurate conductivity reconstruction near boundaries of insulating regions since this requirement is not satisfied. To deal with this difficulty, we propose local harmonic Bz-algorithm which find conductivity values in the separated problematic regions.

Original languageEnglish
Title of host publication13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007
Pages492-495
Number of pages4
Volume17 IFMBE
Publication statusPublished - 2007 Dec 1
Event13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007 - Graz, Austria
Duration: 2007 Aug 292007 Sep 2

Other

Other13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007
CountryAustria
CityGraz
Period07/8/2907/9/2

Fingerprint

Acoustic impedance
Magnetic resonance
Tomography
Current density
Bone
Air
Direction compound

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biomedical Engineering

Cite this

Kim, S., Seo, J. K., Kim, S., Woo, E. J., Jun, K., & Lee, C. O. (2007). Local harmonic Bz algorithm in MREIT. In 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007 (Vol. 17 IFMBE, pp. 492-495)
Kim, Sungwhan ; Seo, Jin Keun ; Kim, Sungwan ; Woo, Eung Je ; Jun, Kiwan ; Lee, Chang Ok. / Local harmonic Bz algorithm in MREIT. 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007. Vol. 17 IFMBE 2007. pp. 492-495
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title = "Local harmonic Bz algorithm in MREIT",
abstract = "In magnetic resonance electrical impedance tomography (MREIT) where we try to reconstruct conductivity images with high spatial resolution, we should generate at least two non-parallel internal current density distributions by sequentially injecting multiple independent currents. However, when the object has a relatively very low conductivity region, the direction of current density due to any injection current becomes tangential to the boundary of the region. This kind of regions may include bones, lungs, and air-filled stomach. Hence, the previous MREIT reconstruction algorithms fail to provide accurate conductivity reconstruction near boundaries of insulating regions since this requirement is not satisfied. To deal with this difficulty, we propose local harmonic Bz-algorithm which find conductivity values in the separated problematic regions.",
author = "Sungwhan Kim and Seo, {Jin Keun} and Sungwan Kim and Woo, {Eung Je} and Kiwan Jun and Lee, {Chang Ok}",
year = "2007",
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Kim, S, Seo, JK, Kim, S, Woo, EJ, Jun, K & Lee, CO 2007, Local harmonic Bz algorithm in MREIT. in 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007. vol. 17 IFMBE, pp. 492-495, 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007, Graz, Austria, 07/8/29.

Local harmonic Bz algorithm in MREIT. / Kim, Sungwhan; Seo, Jin Keun; Kim, Sungwan; Woo, Eung Je; Jun, Kiwan; Lee, Chang Ok.

13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007. Vol. 17 IFMBE 2007. p. 492-495.

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

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Kim S, Seo JK, Kim S, Woo EJ, Jun K, Lee CO. Local harmonic Bz algorithm in MREIT. In 13th International Conference on Electrical Bioimpedance and the 8th Conference on Electrical Impedance Tomography 2007, ICEBI 2007. Vol. 17 IFMBE. 2007. p. 492-495