Conductivity imaging of canine body using 3T magnetic resonance electrical impedance tomography (MREIT) system

H. J. Kim, Y. T. Kim, W. C. Jeong, A. S. Minhas, C. Y. Lim, H. M. Park, E. J. Woo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
13 Downloads (Pure)

Abstract

Magnetic Resonance Electrical Impedance Tomography (MREIT) aims to produce cross-sectional images of conductivity distributions inside animal and human subjects. In this study, we validate its feasibility by performing conductivity imaging experiments of post-mortem canine bodies. After clipping the hair of a beagle, we attached four carbonhydrogel electrodes and placed the dog inside our 3T MRI scanner. We injected the imaging current in the form of short pulses into the imaging area, the timing of which was synchronized with a chosen pulse sequence. By obtaining images of the induced magnetic flux density distributions inside the dog, we reconstructed conductivity images using the single-step harmonic Bz algorithm based on the relationship between conductivity and magnetic flux density. Reconstructed conductivity images of heart, kidney, prostate, and other organs exhibited unique contrast information hardly observed in other imaging modalities. By providing cross-sectional conductivity images with a spatial resolution of a few millimeters, MREIT may deliver unique new diagnostic information in future clinical studies.

Original languageEnglish
Pages (from-to)1505-1510
Number of pages6
JournalScientia Iranica
Volume18
Issue number6
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • MREIT
  • magnetic flux density
  • conductivity image
  • canine body
  • harmonic Bz

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