Anisotropic elastic moduli reconstruction in transversely isotropic model using MRE

Jiah Song, Oh In Kwon, Jin Keun Seo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Magnetic resonance elastography (MRE) is an elastic tissue property imaging modality in which the phase-contrast based MRI imaging technique is used to measure internal displacement induced by a harmonically oscillating mechanical vibration. MRE has made rapid technological progress in the past decade and has now reached the stage of clinical use. Most of the research outcomes are based on the assumption of isotropy. Since soft tissues likeskeletal muscles show anisotropic behavior, the MRE technique should be extended to anisotropic elastic property imaging. This paper considers reconstruction in a transversely isotropic model, which is the simplest case of anisotropy, and develops a new non-iterative reconstruction method for visualizing the elastic moduli distribution. This new method is based on an explicit representation formula using the Newtonian potential of measured displacement. Hence, the proposed method does not require iterations since it directly recovers the anisotropic elastic moduli. We perform numerical simulations in order to demonstrate the feasibility of the proposed method in recovering a two-dimensional anisotropic tensor.

Original languageEnglish
Article number115003
JournalInverse Problems
Volume28
Issue number11
DOIs
Publication statusPublished - 2012 Nov 1

Fingerprint

Transversely Isotropic
Magnetic Resonance
Elastic Modulus
Magnetic resonance
Elastic moduli
Imaging techniques
Imaging
Tissue
Phase Contrast
Magnetic resonance imaging
Vibrations (mechanical)
Tensors
Muscle
Representation Formula
Soft Tissue
Isotropy
Elastic Properties
Anisotropy
Model
Modality

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Science Applications
  • Applied Mathematics
  • Mathematical Physics
  • Theoretical Computer Science

Cite this

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Anisotropic elastic moduli reconstruction in transversely isotropic model using MRE. / Song, Jiah; Kwon, Oh In; Seo, Jin Keun.

In: Inverse Problems, Vol. 28, No. 11, 115003, 01.11.2012.

Research output: Contribution to journalArticle

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