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Analysis of flow phenomena in stented cerebral aneurysms

Investigation on the changes of flow phenomena in saccular aneurysms at the Cerebral had been studied. Due to the aneurysms, the stent placement was done to prevent the rupture of aneurysms. The velocity profile and pressure distribution after and before installing the stent had been identified at t...

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Main Author: Shamsul Aliff, Mohd
Format: Undergraduates Project Papers
Language:English
Published: 2009
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/1091/1/39.Analysis%20of%20flow%20phenomena%20in%20stented%20cerebral%20aneurysms.pdf
http://umpir.ump.edu.my/id/eprint/1091/
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spelling my.ump.umpir.10912023-04-04T02:50:49Z http://umpir.ump.edu.my/id/eprint/1091/ Analysis of flow phenomena in stented cerebral aneurysms Shamsul Aliff, Mohd TA Engineering (General). Civil engineering (General) Investigation on the changes of flow phenomena in saccular aneurysms at the Cerebral had been studied. Due to the aneurysms, the stent placement was done to prevent the rupture of aneurysms. The velocity profile and pressure distribution after and before installing the stent had been identified at the different locations of aneurysms. For each location, there is three cases with the different size of aneurysms that are 3.5 mm, 4.5 mm and 5.5 mm in radius. To identify the changes in local hemodynamic due to stent implantation, stented and non stented aneurysm models using selected stent were taken into considerations. 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. The minimum velocity had obtained after stents placement. In the first model, the minimum velocity obtained for non stented is 0.374 m/s for case 1, 0.421 m/s for case 2 and 0.36 m/s for case 3. After stenting implementation, the higher minimum velocity were increased for all cases. For case 1 is 0.416 m/s, case 2 is 0.443 m/s and case 3 is 0.404 m/s. In the second model, the minimum velocity for non-stented aneurysms is 0.487 m/s for case 1, 0.424 m/s and 0.343 m/s for case 3. After stenting, the velocity also increased. For case 1 is 0.495 m/s, case is 0.454 m/s and case 3 is 0.382 m/s. The different locations of aneurism, will give the different result of velocity profile and pressure distribution. In the first model, the peak pressure for non-stented aneurysms is 453 Pa and for stented is 422 Pa. While, in second model, for non-stented aneurysms, the peak pressure is 455 Pa and 432 Pa for stented aneurysms. Finally, the correlations obtained from this numerical result could be used to investigate the pressure distribution around the diseased segment. 2009-11 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/1091/1/39.Analysis%20of%20flow%20phenomena%20in%20stented%20cerebral%20aneurysms.pdf Shamsul Aliff, Mohd (2009) Analysis of flow phenomena in stented cerebral aneurysms. Faculty of Mechanical Engineering, Universiti Malaysia Pahang.
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Shamsul Aliff, Mohd
Analysis of flow phenomena in stented cerebral aneurysms
description Investigation on the changes of flow phenomena in saccular aneurysms at the Cerebral had been studied. Due to the aneurysms, the stent placement was done to prevent the rupture of aneurysms. The velocity profile and pressure distribution after and before installing the stent had been identified at the different locations of aneurysms. For each location, there is three cases with the different size of aneurysms that are 3.5 mm, 4.5 mm and 5.5 mm in radius. To identify the changes in local hemodynamic due to stent implantation, stented and non stented aneurysm models using selected stent were taken into considerations. 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. The minimum velocity had obtained after stents placement. In the first model, the minimum velocity obtained for non stented is 0.374 m/s for case 1, 0.421 m/s for case 2 and 0.36 m/s for case 3. After stenting implementation, the higher minimum velocity were increased for all cases. For case 1 is 0.416 m/s, case 2 is 0.443 m/s and case 3 is 0.404 m/s. In the second model, the minimum velocity for non-stented aneurysms is 0.487 m/s for case 1, 0.424 m/s and 0.343 m/s for case 3. After stenting, the velocity also increased. For case 1 is 0.495 m/s, case is 0.454 m/s and case 3 is 0.382 m/s. The different locations of aneurism, will give the different result of velocity profile and pressure distribution. In the first model, the peak pressure for non-stented aneurysms is 453 Pa and for stented is 422 Pa. While, in second model, for non-stented aneurysms, the peak pressure is 455 Pa and 432 Pa for stented aneurysms. Finally, the correlations obtained from this numerical result could be used to investigate the pressure distribution around the diseased segment.
format Undergraduates Project Papers
author Shamsul Aliff, Mohd
author_facet Shamsul Aliff, Mohd
author_sort Shamsul Aliff, Mohd
title Analysis of flow phenomena in stented cerebral aneurysms
title_short Analysis of flow phenomena in stented cerebral aneurysms
title_full Analysis of flow phenomena in stented cerebral aneurysms
title_fullStr Analysis of flow phenomena in stented cerebral aneurysms
title_full_unstemmed Analysis of flow phenomena in stented cerebral aneurysms
title_sort analysis of flow phenomena in stented cerebral aneurysms
publishDate 2009
url http://umpir.ump.edu.my/id/eprint/1091/1/39.Analysis%20of%20flow%20phenomena%20in%20stented%20cerebral%20aneurysms.pdf
http://umpir.ump.edu.my/id/eprint/1091/
_version_ 1762392368006299648
score 13.211869

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