liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Post-Processing Dynamic Behavior of WSS in Aortic Blood Flow
Linköping University, Department of Mechanical Engineering. Linköping University, The Institute of Technology. Linköping University, Center for Medical Image Science and Visualization (CMIV).
Linköping University, Department of Mechanical Engineering. Linköping University, The Institute of Technology. Linköping University, Center for Medical Image Science and Visualization (CMIV).
Linköping University, Department of Biomedical Engineering. Linköping University, The Institute of Technology. Linköping University, Center for Medical Image Science and Visualization (CMIV).ORCID iD: 0000-0001-5526-2399
2006 (English)Report (Other academic)
Abstract [en]

Pulsating flow simulations with CFD is performed on a stenosed human aorta with post-stenotic dilatation, for development of wall shear stress (WSS) dynamic parameters. WSS is of interest due to its correlation with atherosclerosis. The dynamic behavior and dynamic capturing parameters of WSS are usable in analyzing non-stationary results from blood flow simulations. The amount of wall back-flow is shown to be an very easy parameter to interpret and it showed an "washout" effect in the post-stenotic dilatation. A new dynamic capturing parameter describing the WSS angular amplitude (WSSAA) is presented. It has both differences and similarities with the widely used oscillating shear index (OSI) parameter. WSSA have a more direct physical interpretation then OSI.

Place, publisher, year, edition, pages
Linköping: Linköpings Universitetet , 2006.
Series
LITH-IKP-R, ISSN 0281-5001 ; 6
Keyword [en]
WallShear Stress, Human Aorta, CFD, WSS angular amplitude, Wall back-flow
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-36744ISRN: LITH-IKP-R--06/1417--SELocal ID: 32311OAI: oai:DiVA.org:liu-36744DiVA: diva2:257593
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2016-03-14
In thesis
1. Estimating patient specific wall shear stress in the human aorta: geometrical and post-processing considerations
Open this publication in new window or tab >>Estimating patient specific wall shear stress in the human aorta: geometrical and post-processing considerations
2006 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis describes a workflow to perform in-vivo wall shear stress (WSS) estimations in the human aorta using computational fluid dynamics (CFD) methods. An abnormal WSS distribution is believed to influence the development of many cardiovascular diseases, e.g. atherosclerosis. The focus in this thesis is on geometrical influence on the WSS results and interpretation methods tor non-stationary results. The work shows that results are sensitive to the choice of segmentation method (the process from medical images to a geometrical model) and a correct geometrical description of the artery is crucial in making WSS estimations. A new parameter for non-stationary WSS results has been proposed; Wall Shear Stress Angular Amplitude (WSSAA), making the analysis of non-stationary results more straight-forward. It has been shown that the workfiow can be used with confidence and that WSS can be estimated in-vivo. using the combination of MRI-based geometry definition and CFD.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet, 2006. 29 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1275
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-36904 (URN)32991 (Local ID)91-85643-75-0 (ISBN)32991 (Archive number)32991 (OAI)
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-12-19

Open Access in DiVA

No full text

Authority records BETA

Renner, JohanGårdhagen, RolandKarlsson, Matts

Search in DiVA

By author/editor
Renner, JohanGårdhagen, RolandKarlsson, Matts
By organisation
Department of Mechanical EngineeringThe Institute of TechnologyCenter for Medical Image Science and Visualization (CMIV)Department of Biomedical Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 191 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf