contributor author | R. W. Ogden | |
contributor author | A. Smythe | |
contributor author | W. G. Li | |
contributor author | X. Y. Luo | |
contributor author | A. W. Majeed | |
contributor author | N. Bird | |
contributor author | N. A. Hill | |
date accessioned | 2017-05-09T00:48:21Z | |
date available | 2017-05-09T00:48:21Z | |
date copyright | October, 2012 | |
date issued | 2012 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-29002#101009_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/148199 | |
description abstract | Estimation of biomechanical parameters of soft tissues from noninvasive measurements has clinical significance in patient-specific modeling and disease diagnosis. In this work, we present a quasi-nonlinear method that is used to estimate the elastic moduli of the human gallbladder wall. A forward approach based on a transversely isotropic membrane material model is used, and an inverse iteration is carried out to determine the elastic moduli in the circumferential and longitudinal directions between two successive ultrasound images of gallbladder. The results demonstrate that the human gallbladder behaves in an anisotropic manner, and constitutive models need to incorporate this. The estimated moduli are also nonlinear and patient dependent. Importantly, the peak stress predicted here differs from the earlier estimate from linear membrane theory. As the peak stress inside the gallbladder wall has been found to strongly correlate with acalculous gallbladder pain, reliable mechanical modeling for gallbladder tissue is crucial if this information is to be used in clinical diagnosis. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Quasi-Nonlinear Analysis of the Anisotropic Behaviour of Human Gallbladder Wall | |
type | Journal Paper | |
journal volume | 134 | |
journal issue | 10 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.4007633 | |
journal fristpage | 101009 | |
identifier eissn | 1528-8951 | |
keywords | Stress | |
keywords | Elastic moduli | |
keywords | Membranes | |
keywords | Pressure | |
keywords | Soft tissues | |
keywords | Biological tissues | |
keywords | Modeling AND Ultrasound | |
tree | Journal of Biomechanical Engineering:;2012:;volume( 134 ):;issue: 010 | |
contenttype | Fulltext | |