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The interactions between bloodstream and vascular structure on aortic dissecting aneurysmal model: A numerical study

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Abstract

Stent-graft implantation is an important means of clinical treatment for aortic dissecting aneurysm (ADA). However, researches on fluid dynamics effects of stent were rare. Computer simulation was used to investigate the interactions between bloodstream and vascular structure in a stented ADA, which endures the periodic pulse velocity and pressure. We obtained and analyzed the flow velocity distribution, the wall displacement and wall stress in the ADA. By comparing the different results between a non-stented and a stented ADA, we found that the insertion of a vascular graft can make the location of maximum stress and displacement move from the aneurysm lumen wall to the artery wall, accompanied with a greatly decrease in value. These results imply that the placement of a stent-graft of any kind to occlude ADA will result in a decreased chance of rupture.

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Authors and Affiliations

  1. Department of Engineering Mechanics, School of Aerospace, Tsinghua University, 100084, Beijing, China

    Zeng-Sheng Chen & Xi-Wen Zhang

  2. Institute of Heart, Pulmonary & Vascular Diseases, Capital University of Medical Science Affiliated Beijing Anzhen Hospital, 100029, Beijing, China

    Zhan-Ming Fan

Authors
  1. Zeng-Sheng Chen
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  2. Zhan-Ming Fan
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  3. Xi-Wen Zhang
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Correspondence to Xi-Wen Zhang.

Additional information

The project was supported by the National Natural Science Foundation of China (11172156 and 30970822) and the National Science Foundation for Post-doctoral Scientists of China (2012M510021).

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Chen, ZS., Fan, ZM. & Zhang, XW. The interactions between bloodstream and vascular structure on aortic dissecting aneurysmal model: A numerical study. Acta Mech Sin 29, 462–468 (2013). https://doi.org/10.1007/s10409-013-0026-1

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  • DOI: https://doi.org/10.1007/s10409-013-0026-1

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