Atrial Vortex Measurement by Magnetic Resonance Imaging

Muneichi Shibata, T. Yambe, Y. Kanke, T. Hayase

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Abstract - The clinical meaning of left atrial vortex has been not fully elucidated. We developed a new left atrial model to simulate intra-atrial flow and a simple method to observe atrial vortex by magnetic resonance imaging (MRI). A flow simulation model of the left atrium (LA) was developed based on slices of the LA image acquired by 1.5T MRI scanner system. Images were reconstructed by commercial software and a computational model was created by using tetrahedral mesh. In order to give the model consecutive temporal change, we presumed that deformation of LA is related to mitral valve annular movement. Then we traced its temporal change and approximated. The flow simulation was performed with FLUENT. Pressure boundary conditions were set based on data in a literature. The results of flow simulation in LA were validated qualitatively by MRI velocity mapping. Left atrial vortex was observed in both simulation and MRI velocity mapping. A representative slice to observe left atrial vortex by MRI was determined with the assistance of the simulation model.

Original languageEnglish
Title of host publication13th International Conference on Biomedical Engineering - ICBME 2008
Pages2254-2257
Number of pages4
DOIs
Publication statusPublished - 2009 Dec 1
Event13th International Conference on Biomedical Engineering, ICBME 2008 - , Singapore
Duration: 2008 Dec 32008 Dec 6

Publication series

NameIFMBE Proceedings
Volume23
ISSN (Print)1680-0737

Other

Other13th International Conference on Biomedical Engineering, ICBME 2008
CountrySingapore
Period08/12/308/12/6

Keywords

  • MRI
  • atrial vortex
  • simulation model

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering

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  • Cite this

    Shibata, M., Yambe, T., Kanke, Y., & Hayase, T. (2009). Atrial Vortex Measurement by Magnetic Resonance Imaging. In 13th International Conference on Biomedical Engineering - ICBME 2008 (pp. 2254-2257). (IFMBE Proceedings; Vol. 23). https://doi.org/10.1007/978-3-540-92841-6_565