A numerical study of a heart phantom model

Zhu, Y., Luo, X.Y. , Gao, H. , Mccomb, C. and Berry, C. (2014) A numerical study of a heart phantom model. International Journal of Computer Mathematics, 91(7), pp. 1535-1551. (doi: 10.1080/00207160.2013.854337)

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In this paper, we develop a computational heart phantom model based on magnetic resonance imaging (MRI) of Shelley's dynamic multi-modality heart phantom. The phantom is made of a hydrogel material which mimics the elasticity of human soft tissue, and iscomposed of anatomically correct left and right ventricle structures. The numerical analysis is carried out using the Neo-Hookean constitutive model and the C ++ based object-oriented finite element library libMesh is used to solve the fully nonlinear governing equations. We derive the partial differential equations into a set of Lagrangian mesh, and use the weighted residual Galerkin method and Newton iteration solver in the numerical scheme. To validate the numerical model, the displacements and strainsof some representative points are compared with experimental measurements and MRI based strain estimations. Good agreement is obtained, and limitations of the model are discussed.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Mccomb, Dr Christie and Luo, Professor Xiaoyu and Gao, Dr Hao and Berry, Professor Colin and Zhu, Dr Yunfei
Authors: Zhu, Y., Luo, X.Y., Gao, H., Mccomb, C., and Berry, C.
College/School:College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:International Journal of Computer Mathematics
Publisher:Taylor and Francis
ISSN (Online):1029-0265
Copyright Holders:Copyright © 2013 The Authors
First Published:First published in International Journal of Computer Mathematics
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
560111Finite element-immersed boundary method and its application to mitral valvesXiaoyu LuoEngineering & Physical Sciences Research Council (EPSRC)EP/I029990/1M&S - MATHEMATICS