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Automated generation of a finite element stent model

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Abstract

Numerical simulations have proven to be a valuable tool to investigate the mechanical behavior of stents. These computer models require a considerable amount of preprocessing and computational effort and consequently there is a continuous need for accurate simplifications and automation. For example, it was recently shown that using beam elements instead of solid elements results in a significant speed up of stent simulations. However, the currently applied techniques to create a finite element mesh starting from stent samples remain time-consuming. We present a semi-automated strategy to obtain an accurate finite element beam mesh from a stent sample. The method consists of two steps: (1) A triangulated surface representation of the stent geometry is obtained from micro CT images. (2) Subsequently, a beam mesh is automatically generated by computing the centerline. The method is time-effective and results in an accurate 3D stent model as demonstrated for the MULTI-LINK Vision™ stent.

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Acknowledgments

The authors acknowledge Patrick Segers, PhD and Yves Taeymans, MD, PhD for their valuable support. First author’s research is supported by a BOF-grant (01D22606) from Ghent University, Belgium.

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Authors and Affiliations

  1. Cardiovascular Mechanics and Biofluid Dynamics Research Group, Institute Biomedical Technology (IBiTech), Ghent University, De Pintelaan 185, 9000, Gent, Belgium

    Peter Mortier, Matthieu De Beule, Denis Van Loo, Pascal Verdonck & Benedict Verhegghe

  2. Centre of X-ray Tomography (UGCT), Ghent University, Proeftuinstraat 86, 9000, Gent, Belgium

    Denis Van Loo & Bert Masschaele

Authors
  1. Peter Mortier
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  2. Matthieu De Beule
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  3. Denis Van Loo
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  4. Bert Masschaele
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  5. Pascal Verdonck
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  6. Benedict Verhegghe
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Corresponding author

Correspondence to Peter Mortier.

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Mortier, P., De Beule, M., Van Loo, D. et al. Automated generation of a finite element stent model. Med Biol Eng Comput 46, 1169–1173 (2008). https://doi.org/10.1007/s11517-008-0410-3

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  • DOI: https://doi.org/10.1007/s11517-008-0410-3

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