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Intraluminal thrombus and risk of rupture in patient specific abdominal aortic aneurysm – FSI modelling

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  • Danny Bluestein
  • Kris Dumont
  • Matthieu De Beule
  • John Ricotta
  • Paul Impellizzeri
  • Benedict Verhegghe
  • Pascal Verdonck

Abstract

Recent numerical studies of abdominal aortic aneurysm (AAA) suggest that intraluminal thrombus (ILT) may reduce the stress loading on the aneurysmal wall. Detailed fluid structure interaction (FSI) in the presence and absence of ILT may help predict AAA rupture risk better. Two patients, with varied AAA geometries and ILT structures, were studied and compared in detail. The patient specific 3D geometries were reconstructed from CT scans, and uncoupled FSI approach was applied. Complex flow trajectories within the AAA lumen indicated a viable mechanism for the formation and growth of the ILT. The resulting magnitude and location of the peak wall stresses was dependent on the shape of the AAA, and the ILT appeared to reduce wall stresses for both patients. Accordingly, the inclusion of ILT in stress analysis of AAA is of importance and would likely increase the accuracy of predicting AAA risk of rupture.

Suggested Citation

  • Danny Bluestein & Kris Dumont & Matthieu De Beule & John Ricotta & Paul Impellizzeri & Benedict Verhegghe & Pascal Verdonck, 2009. "Intraluminal thrombus and risk of rupture in patient specific abdominal aortic aneurysm – FSI modelling," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 12(1), pages 73-81.
    • Handle: RePEc:taf:gcmbxx:v:12:y:2009:i:1:p:73-81
    DOI: 10.1080/10255840802176396
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    Cited by:

    1. Anastasios Raptis & Michalis Xenos & Stelios Dimas & Athanasios Giannoukas & Nicos Labropoulos & Danny Bluestein & Miltiadis I. Matsagkas, 2016. "Effect of macroscale formation of intraluminal thrombus on blood flow in abdominal aortic aneurysms," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 19(1), pages 84-92, January.
    2. R. Antón & C.-Y. Chen & M.-Y. Hung & E.A. Finol & K. Pekkan, 2015. "Experimental and computational investigation of the patient-specific abdominal aortic aneurysm pressure field," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 18(9), pages 981-992, July.

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