Finite element modeling of cerebral aneurysm

An aneurysm is an abnormal bulging or widening of a portion of an artery due to weakness in the wall of the aortic wall. It happens when the mechanical stress exceeds the tensile strength of the tissue. Nowadays, an accurate decision to predict the rupture of the aneurysm is not is founded yet. This...

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Main Author:	Alexson, Abit
Format:	Undergraduates Project Papers
Language:	English English English English
Published:	2010
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/1759/ http://umpir.ump.edu.my/id/eprint/1759/ http://umpir.ump.edu.my/id/eprint/1759/1/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Table%20of%20content.pdf http://umpir.ump.edu.my/id/eprint/1759/2/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/1759/3/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/1759/4/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20References.pdf

id	oai:umpir.ump.edu.my:1759
recordtype	eprints
spelling	oai:umpir.ump.edu.my:17592017-04-06T02:39:33Z http://umpir.ump.edu.my/id/eprint/1759/ Finite element modeling of cerebral aneurysm Alexson, Abit TA Engineering (General). Civil engineering (General) An aneurysm is an abnormal bulging or widening of a portion of an artery due to weakness in the wall of the aortic wall. It happens when the mechanical stress exceeds the tensile strength of the tissue. Nowadays, an accurate decision to predict the rupture of the aneurysm is not is founded yet. This study is focusing on cerebral aneurysm that is occurring at the circle of Willis area. By using the simulation tools, the stress behaviour on cerebral aneurysm (CA) area will be analyzed. As the size of an aneurysm increases, there is a potential of rupture of aneurysm. Studying the mechanical properties in real CA’s can better the research of aneurysm behaviour. This study consists of three cases with the different size of aneurysms which are 2.5 mm and 3.5 mm in radius. The simulation of the model was studied under incompressible, non-Newtonian, viscous, non pulsatile condition in which we investigated computationally in a three-dimensional configuration using a Computational Fluid Dynamics (CFD) program. Currently, the decision to treat a diagnosed, unruptured aneurysm is based primarily on the maximum dimension of the lesion even though there is controversy over the critical size. Our results from finite element analysis reveal important roles of lesion shape, material properties, and loading conditions in governing the distributions of stress within the saccular aneurysms. This research finds that maximum stresses increase markedly with increases in lesion size, the ratio of neck diameter to lesion height, and the pressure. 2010-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1759/1/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Table%20of%20content.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/1759/2/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Abstract.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/1759/3/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Chapter%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/1759/4/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20References.pdf Alexson, Abit (2010) Finite element modeling of cerebral aneurysm. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:52276&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English English English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Alexson, Abit Finite element modeling of cerebral aneurysm
description	An aneurysm is an abnormal bulging or widening of a portion of an artery due to weakness in the wall of the aortic wall. It happens when the mechanical stress exceeds the tensile strength of the tissue. Nowadays, an accurate decision to predict the rupture of the aneurysm is not is founded yet. This study is focusing on cerebral aneurysm that is occurring at the circle of Willis area. By using the simulation tools, the stress behaviour on cerebral aneurysm (CA) area will be analyzed. As the size of an aneurysm increases, there is a potential of rupture of aneurysm. Studying the mechanical properties in real CA’s can better the research of aneurysm behaviour. This study consists of three cases with the different size of aneurysms which are 2.5 mm and 3.5 mm in radius. The simulation of the model was studied under incompressible, non-Newtonian, viscous, non pulsatile condition in which we investigated computationally in a three-dimensional configuration using a Computational Fluid Dynamics (CFD) program. Currently, the decision to treat a diagnosed, unruptured aneurysm is based primarily on the maximum dimension of the lesion even though there is controversy over the critical size. Our results from finite element analysis reveal important roles of lesion shape, material properties, and loading conditions in governing the distributions of stress within the saccular aneurysms. This research finds that maximum stresses increase markedly with increases in lesion size, the ratio of neck diameter to lesion height, and the pressure.
format	Undergraduates Project Papers
author	Alexson, Abit
author_facet	Alexson, Abit
author_sort	Alexson, Abit
title	Finite element modeling of cerebral aneurysm
title_short	Finite element modeling of cerebral aneurysm
title_full	Finite element modeling of cerebral aneurysm
title_fullStr	Finite element modeling of cerebral aneurysm
title_full_unstemmed	Finite element modeling of cerebral aneurysm
title_sort	finite element modeling of cerebral aneurysm
publishDate	2010
url	http://umpir.ump.edu.my/id/eprint/1759/ http://umpir.ump.edu.my/id/eprint/1759/ http://umpir.ump.edu.my/id/eprint/1759/1/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Table%20of%20content.pdf http://umpir.ump.edu.my/id/eprint/1759/2/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Abstract.pdf http://umpir.ump.edu.my/id/eprint/1759/3/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20Chapter%201.pdf http://umpir.ump.edu.my/id/eprint/1759/4/Finite%20element%20modeling%20of%20cerebral%20aneurysm%20-%20References.pdf
first_indexed	2018-09-07T00:24:44Z
last_indexed	2018-09-07T00:24:44Z
_version_	1610906216585756672

Finite element modeling of cerebral aneurysm

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