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 journalArticlepeer-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 languageEnglish
Pages (from-to)137-146
JournalIAENG International Journal of Computer Science
Volume43
Issue number2
Publication statusPublished - 18 May 2016

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