High field MREIT: Setup and tissue phantom imaging at 11 T

Rosalind Sadleir, Samuel Grant, Sung Uk Zhang, Suk Hoon Oh, Byung Il Lee, Eung Je Woo

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Magnetic resonance electrical impedance tomography (MREIT) has the potential to provide conductivity and current density images with high spatial resolution and accuracy. Recent experimental studies at a field strength of 3 T showed that the spatial resolution of conductivity and current density images may be similar to that of conventional MR images as long as enough current is injected, at least 20 mA when the object being imaged has a size similar to the human head. To apply the MREIT technique to image small conductivity changes using less injection current, we performed MREIT studies at 11 T field strength, where noise levels in measured magnetic flux density data are significantly lower. In this paper we present the experimental results of imaging biological tissues with different conductivity values using MREIT at 11 T. We describe technical difficulties encountered in using high-field MREIT systems and possible solutions. High-field MREIT is suggested as a research tool for obtaining accurate conductivity data from tissue samples and animal subjects.

Original languageEnglish (US)
Article numberS22
Pages (from-to)S261-S270
JournalPhysiological Measurement
Volume27
Issue number5
DOIs
StatePublished - May 1 2006
Externally publishedYes

Keywords

  • Conductivity
  • High magnetic field
  • MREIT

ASJC Scopus subject areas

  • Biophysics
  • Physiology
  • Biomedical Engineering
  • Physiology (medical)

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    Sadleir, R., Grant, S., Zhang, S. U., Oh, S. H., Lee, B. I., & Woo, E. J. (2006). High field MREIT: Setup and tissue phantom imaging at 11 T. Physiological Measurement, 27(5), S261-S270. [S22]. https://doi.org/10.1088/0967-3334/27/5/S22