Finite Element Analysis to Compare the Accuracy of the Direct and MDEV Inversion Algorithms in MR Elastography

Lyam M Hollis; Eric Barnhill; Noel Conlisk; L.E.J. Thomas-Seale; John Roberts; Pankaj Pankaj; Peter Hoskins

Finite Element Analysis to Compare the Accuracy of the Direct and MDEV Inversion Algorithms in MR Elastography

Lyam M Hollis, Eric Barnhill, Noel Conlisk, L.E.J. Thomas-Seale, John Roberts, Pankaj Pankaj, Peter Hoskins

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetic resonance elastography (MRE) utilises an inversion algorithm to create maps of material properties (elastograms) from displacements caused by mechanically induced shear waves. This study aimed to assess the accuracy of measurements from multi-dual elasto-visco (MDEV) inversion in comparison to direct inversion (DI) in simplistic geometries. Finite element analysis (FEA) was used to simulate wave propagation in cuboid geometries with embedded cylindrical
inserts. Accuracy of both algorithms was dependent upon insert length, diameter and shear modulus. Whilst MDEV reduced artefacts in the elastograms in comparison to DI it was unable to improve accuracy of the measurements.

Original language	English
Pages (from-to)	137-146
Journal	IAENG International Journal of Computer Science
Volume	43
Issue number	2
Publication status	Published - 18 May 2016

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title = "Finite Element Analysis to Compare the Accuracy of the Direct and MDEV Inversion Algorithms in MR Elastography",

abstract = "Magnetic resonance elastography (MRE) utilises an inversion algorithm to create maps of material properties (elastograms) from displacements caused by mechanically induced shear waves. This study aimed to assess the accuracy of measurements from multi-dual elasto-visco (MDEV) inversion in comparison to direct inversion (DI) in simplistic geometries. Finite element analysis (FEA) was used to simulate wave propagation in cuboid geometries with embedded cylindrical inserts. Accuracy of both algorithms was dependent upon insert length, diameter and shear modulus. Whilst MDEV reduced artefacts in the elastograms in comparison to DI it was unable to improve accuracy of the measurements.",

author = "Hollis, \{Lyam M\} and Eric Barnhill and Noel Conlisk and L.E.J. Thomas-Seale and John Roberts and Pankaj Pankaj and Peter Hoskins",

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T1 - Finite Element Analysis to Compare the Accuracy of the Direct and MDEV Inversion Algorithms in MR Elastography

AU - Hollis, Lyam M

AU - Barnhill, Eric

AU - Conlisk, Noel

AU - Thomas-Seale, L.E.J.

AU - Roberts, John

AU - Pankaj, Pankaj

AU - Hoskins, Peter

PY - 2016/5/18

Y1 - 2016/5/18

N2 - Magnetic resonance elastography (MRE) utilises an inversion algorithm to create maps of material properties (elastograms) from displacements caused by mechanically induced shear waves. This study aimed to assess the accuracy of measurements from multi-dual elasto-visco (MDEV) inversion in comparison to direct inversion (DI) in simplistic geometries. Finite element analysis (FEA) was used to simulate wave propagation in cuboid geometries with embedded cylindrical inserts. Accuracy of both algorithms was dependent upon insert length, diameter and shear modulus. Whilst MDEV reduced artefacts in the elastograms in comparison to DI it was unable to improve accuracy of the measurements.

AB - Magnetic resonance elastography (MRE) utilises an inversion algorithm to create maps of material properties (elastograms) from displacements caused by mechanically induced shear waves. This study aimed to assess the accuracy of measurements from multi-dual elasto-visco (MDEV) inversion in comparison to direct inversion (DI) in simplistic geometries. Finite element analysis (FEA) was used to simulate wave propagation in cuboid geometries with embedded cylindrical inserts. Accuracy of both algorithms was dependent upon insert length, diameter and shear modulus. Whilst MDEV reduced artefacts in the elastograms in comparison to DI it was unable to improve accuracy of the measurements.

M3 - Article

SN - 1819-656X

VL - 43

SP - 137

EP - 146

JO - IAENG International Journal of Computer Science

JF - IAENG International Journal of Computer Science

IS - 2

ER -

Finite Element Analysis to Compare the Accuracy of the Direct and MDEV Inversion Algorithms in MR Elastography

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