A controllably anisotropic conductivity or diffusion phantom constructed from isotropic layers

Rosalind Sadleir, Farida Neralwala, Tang Te, Aaron Tucker

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Phantoms with controllable and well-defined anisotropy are needed to test methods for imaging electrical anisotropy. We developed and tested a phantom that had properties similar to a homogeneous anisotropic conductive medium. The phantom was constructed with alternate slices of isotropic gel having different conductivities. The degree of anisotropy in the phantom could be varied easily by changing the relative conductivity of the two gels. We tested the stability of several phantoms and found their properties were maintained for approximately 8 h following construction. The phantom has application to electrical impedance tomography, magnetic resonance electrical impedance tomography, EEG and ECG source imaging and diffusion tensor imaging.

Original languageEnglish (US)
Pages (from-to)2522-2531
Number of pages10
JournalAnnals of Biomedical Engineering
Volume37
Issue number12
DOIs
StatePublished - Dec 2009
Externally publishedYes

Fingerprint

Anisotropy
Acoustic impedance
Tomography
Gels
Diffusion tensor imaging
Imaging techniques
Magnetic resonance
Electroencephalography
Electrocardiography

Keywords

  • Anisotropy
  • DTI
  • EIT
  • Inverse ECG
  • Inverse EEG
  • MREIT
  • Phantom

ASJC Scopus subject areas

  • Biomedical Engineering

Cite this

A controllably anisotropic conductivity or diffusion phantom constructed from isotropic layers. / Sadleir, Rosalind; Neralwala, Farida; Te, Tang; Tucker, Aaron.

In: Annals of Biomedical Engineering, Vol. 37, No. 12, 12.2009, p. 2522-2531.

Research output: Contribution to journalArticle

Sadleir, Rosalind ; Neralwala, Farida ; Te, Tang ; Tucker, Aaron. / A controllably anisotropic conductivity or diffusion phantom constructed from isotropic layers. In: Annals of Biomedical Engineering. 2009 ; Vol. 37, No. 12. pp. 2522-2531.
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