Show simple item record

contributor authorR. W. Ogden
contributor authorA. Smythe
contributor authorW. G. Li
contributor authorX. Y. Luo
contributor authorA. W. Majeed
contributor authorN. Bird
contributor authorN. A. Hill
date accessioned2017-05-09T00:48:21Z
date available2017-05-09T00:48:21Z
date copyrightOctober, 2012
date issued2012
identifier issn0148-0731
identifier otherJBENDY-29002#101009_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/148199
description abstractEstimation 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.
publisherThe American Society of Mechanical Engineers (ASME)
titleA Quasi-Nonlinear Analysis of the Anisotropic Behaviour of Human Gallbladder Wall
typeJournal Paper
journal volume134
journal issue10
journal titleJournal of Biomechanical Engineering
identifier doi10.1115/1.4007633
journal fristpage101009
identifier eissn1528-8951
keywordsStress
keywordsElastic moduli
keywordsMembranes
keywordsPressure
keywordsSoft tissues
keywordsBiological tissues
keywordsModeling AND Ultrasound
treeJournal of Biomechanical Engineering:;2012:;volume( 134 ):;issue: 010
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record