Assessment of distributed arterial network models

Medical & Biological Engineering & Computing
P SegersR Verhoeven

Abstract

The aim of this study is to evaluate the relative importance of elastic non-linearities, viscoelasticity and resistance vessel modelling on arterial pressure and flow wave contours computed with distributed arterial network models. The computational results of a non-linear (time-domain) and a linear (frequency-domain) mode were compared using the same geometrical configuration and identical upstream and downstream boundary conditions and mechanical properties. pressures were computed at the ascending aorta, brachial and femoral artery. In spite of the identical problem definition, computational differences were found in input impedance modulus (max. 15-20%), systolic pressure (max. 5%) and pulse pressure (max. 10%). For the brachial artery, the ratio of pulse pressure to aortic pulse pressure was practically identical for both models (3%), whereas for the femoral artery higher values are found for the linear model (+10%). The aortic/brachial pressure transfer function indicates that pressure harmonic amplification is somewhat higher in the linear model for frequencies lower than 6 Hz while the opposite is true for higher frequencies. These computational disparities were attributed to conceptual model differences, such as the tr...Continue Reading

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Citations

Dec 13, 2012·Annals of Biomedical Engineering·Liesbeth TaelmanPatrick Segers
Jul 2, 2011·Medical & Biological Engineering & Computing·Wim J StokJohn M Karemaker
Feb 15, 2000·Journal of Biomechanics·P Segers, P Verdonck
Apr 20, 2004·Journal of Neurology, Neurosurgery, and Psychiatry·H S Chang, H Nakagawa
Aug 12, 2014·International Journal of Cardiology·Jonathan P Mynard, Joseph J Smolich
Mar 27, 2016·Computers in Biology and Medicine·María Teresa PolitiPierre-Yves Lagrée
Dec 6, 2012·International Journal for Numerical Methods in Biomedical Engineering·K LowP Nithiarasu
May 9, 2009·IEEE Transactions on Bio-medical Engineering·Clara M IonescuRobin De Keyser
Jun 2, 2012·Computational and Mathematical Methods in Medicine·Wilco KroonFrans van de Vosse
Jan 1, 2015·Annals of Biomedical Engineering·Simone ManiniAndrea Remuzzi
Aug 26, 2014·Computer Methods in Biomechanics and Biomedical Engineering·Xiaofei WangPierre-Yves Lagrée
Jul 5, 2016·Computer Methods in Biomechanics and Biomedical Engineering·Alexandre MullerHarvey Ho
Aug 16, 2011·Medical Engineering & Physics·W HubertsE M H Bosboom
Sep 30, 2016·Journal of Biomechanical Engineering·Arthur R GhigoPierre-Yves Lagrée
Dec 15, 2017·Journal of Biomechanical Engineering·Wu PanTamara Reid Bush
May 8, 2007·American Journal of Physiology. Heart and Circulatory Physiology·Mohammad W MohiuddinChristopher M Quick
Jul 16, 2008·American Journal of Physiology. Heart and Circulatory Physiology·Carl-Johan ThoreMatts Karlsson
Mar 16, 2012·Journal of Hypertension·Patrick SegersSebastian Vermeersch
Jun 6, 2009·Cardiovascular Engineering·Hongjun Zhang, John K-J Li
May 12, 2009·American Journal of Physiology. Heart and Circulatory Physiology·Philippe ReymondNikos Stergiopulos
Jan 23, 2021·American Journal of Physiology. Heart and Circulatory Physiology·Hasan ObeidMohsen Agharazii

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