Low-Frequency Conductivity Tensor Imaging of the Human Head in vivo using DT-MREIT

First Study

Munish Chauhan, Aprinda Indahlastari, Aditya K. Kasinadhuni, Michael Schar, Thomas H. Mareci, Rosalind Sadleir

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We present the first in vivo images of anisotropic conductivity distribution in the human head, measured at a frequency of approximately 10 Hz. We used Magnetic Resonance Electrical Impedance Tomography (MREIT) techniques to encode phase changes caused by current flow within the head via two independent electrode pairs. These results were then combined with diffusion tensor imaging data to reconstruct full anisotropic conductivity distributions in 5 mm-thick slices of the brains of two participants. Conductivity values recovered in the study were broadly consistent with literature values. We anticipate this technique will be of use in many areas of neuroscience, most importantly in functional imaging via inverse EEG. Future studies will involve pulse sequence acceleration to maximize brain coverage and resolution.

Original languageEnglish (US)
JournalIEEE Transactions on Medical Imaging
DOIs
StateAccepted/In press - Dec 13 2017

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Acoustic impedance
Magnetic resonance
Electric Impedance
Tensors
Tomography
Brain
Magnetic Resonance Spectroscopy
Head
Diffusion tensor imaging
Imaging techniques
Diffusion Tensor Imaging
Neurosciences
Electroencephalography
Electrodes

Keywords

  • Conductivity
  • Current Density Imaging
  • Electrodes
  • Image reconstruction
  • Inverse EEG
  • MREIT
  • tACS
  • tDCS
  • Tensile stress
  • Tomography

ASJC Scopus subject areas

  • Software
  • Radiological and Ultrasound Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Low-Frequency Conductivity Tensor Imaging of the Human Head in vivo using DT-MREIT : First Study. / Chauhan, Munish; Indahlastari, Aprinda; Kasinadhuni, Aditya K.; Schar, Michael; Mareci, Thomas H.; Sadleir, Rosalind.

In: IEEE Transactions on Medical Imaging, 13.12.2017.

Research output: Contribution to journalArticle

Chauhan, Munish ; Indahlastari, Aprinda ; Kasinadhuni, Aditya K. ; Schar, Michael ; Mareci, Thomas H. ; Sadleir, Rosalind. / Low-Frequency Conductivity Tensor Imaging of the Human Head in vivo using DT-MREIT : First Study. In: IEEE Transactions on Medical Imaging. 2017.
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