Structure-based finite strain modelling of the human left ventricle in diastole

Wang, H.M., Gao, H. , Luo, X.Y. , Berry, C. , Griffith, B.E., Ogden, R.W. and Wang, T.J. (2013) Structure-based finite strain modelling of the human left ventricle in diastole. International Journal for Numerical Methods in Biomedical Engineering, 29(1), pp. 83-103. (doi: 10.1002/cnm.2497)

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Finite strain analyses of the left ventricle provide important information on heart function and have the potential to provide insights into the biomechanics of myocardial contractility in health and disease. Systolic dysfunction is the most common cause of heart failure; however, abnormalities of diastolic function also contribute to heart failure, and are associated with conditions including left ventricular hypertrophy and diabetes. The clinical significance of diastolic abnormalities is less well understood than systolic dysfunction, and specific treatments are presently lacking. To obtain qualitative and quantitative information on heart function in diastole, we develop a three-dimensional computational model of the human left ventricle that is derived from noninvasive imaging data. This anatomically realistic model has a rule-based fibre structure and a structure-based constitutive model. We investigate the sensitivity of this comprehensive model to small changes in the constitutive parameters and to changes in the fibre distribution. We make extensive comparisons between this model and similar models that employ different constitutive models, and we demonstrate qualitative and quantitative differences in stress and strain distributions for the different constitutive models. We also provide an initial validation of our model through comparisons to experimental data on stress and strain distributions in the left ventricle.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Luo, Professor Xiaoyu and Ogden, Professor Raymond and Gao, Dr Hao and Berry, Professor Colin
Authors: Wang, H.M., Gao, H., Luo, X.Y., Berry, C., Griffith, B.E., Ogden, R.W., and Wang, T.J.
College/School:College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
College of Science and Engineering > School of Mathematics and Statistics
Journal Name:International Journal for Numerical Methods in Biomedical Engineering
ISSN (Online):2040-7947
Published Online:27 June 2012
Copyright Holders:Copyright © 2012 John Wiley & Sons, Ltd
First Published:First published in International Journal for Numerical Methods in Biomedical Engineering 29(1):83-103
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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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
544551Validation and significance of myocardial haemorrhage revealed by "bright blood" T2-weighted MRI in heart attack survivors: a prospective cohort study.Colin BerryBritish Heart Foundation (BHF)PG/11/2/28474RI CARDIOVASCULAR & MEDICAL SCIENCES