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
Improving Computation of Cardiovascular Relative Pressure Fields From Velocity MRI
Linköping University, Department of Medicine and Health Sciences, Clinical Physiology . Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Heart Centre, Department of Clinical Physiology.ORCID iD: 0000-0003-1395-8296
Linköping University, Department of Electrical Engineering. Linköping University, The Institute of Technology.
2009 (English)In: JOURNAL OF MAGNETIC RESONANCE IMAGING, ISSN 1053-1807, Vol. 30, no 1, 54-61 p.Article in journal (Refereed) Published
Abstract [en]

Purpose: To evaluate a multigrid-based solver for the pressure Poisson equation (PPE) with Galerkin coarsening, which works directly on the specified domain, for the computation of relative pressure fields from velocity MRI data. Materials and Methods: We compared the proposed structure-defined Poisson solver to other popular Poisson solvers working on unmodified rectangular and modified quasirectangular domains using synthetic and in vitro phantoms in which the mathematical solution of the pressure field is known, as well as on in vivo MRI velocity measurements of aortic blood flow dynamics. Results: All three PPE solvers gave accurate results for convex computational domains. Using a rectangular or quasirectangular domain on a more complicated domain, like a c-shape, revealed a systematic underestimation of the pressure amplitudes, while the proposed PPE solver, working directly on the specified domain, provided accurate estimates of the relative pressure fields. Conclusion: Popular iterative approaches with quasirectangular computational domains can lead to significant systematic underestimation of the pressure amplitude. We suggest using a multigrid-based PPE solver with Galerkin coarsening, which works directly on the structure-defined computational domain. This solver provides accurate estimates of the relative pressure fields for both simple and complex geometries with additional significant improvements with respect to execution speed.

Place, publisher, year, edition, pages
2009. Vol. 30, no 1, 54-61 p.
Keyword [en]
blood pressure measurement; hemodynamics; noninvasive; blood flow
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-20220DOI: 10.1002/jmri.21775OAI: oai:DiVA.org:liu-20220DiVA: diva2:233812
Available from: 2009-09-02 Created: 2009-08-31 Last updated: 2013-09-03

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Ebbers, TinoFarneback, Gunnar

Search in DiVA

By author/editor
Ebbers, TinoFarneback, Gunnar
By organisation
Clinical Physiology Faculty of Health SciencesDepartment of Clinical PhysiologyDepartment of Electrical EngineeringThe Institute of Technology
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 113 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