Impact of model complexity on patient specific wall stress analyses of abdominal aortic aneurysms

Publikation: Beitrag in FachzeitschriftKonferenzartikelBeigetragenBegutachtung

Beitragende

  • Andreas Maier - , Technische Universität München (Autor:in)
  • M. W. Gee - , Technische Universität München (Autor:in)
  • C. Reeps - , Klinik und Poliklinik für Viszeral- Thorax- und Gefäßchirurgie, Technische Universität München (Autor:in)
  • H. H. Eckstein - , Technische Universität München (Autor:in)
  • W. A. Wall - , Technische Universität München (Autor:in)

Abstract

A new approach for risk evaluation of abdominal aortic aneurysm is based on wall stress distribution and determination of peak wall stresses using the finite element method. To clarify the influence of different model assumptions on results a study with models of different complexities is performed. Patient specific AAAs are modeled using 6 different approaches which are distinguished by linear or nonlinear material law, inclusion of thrombus and calcification, application of blood pressure load and prestressing technique. Deformations and peak wall stresses change remarkably between the different complexity grades. In most cases, simplifications lead to unrealistically increased displacements and stresses.

Details

OriginalspracheEnglisch
Seiten (von - bis)510-513
Seitenumfang4
FachzeitschriftIFMBE Proceedings
Ausgabenummer4
PublikationsstatusVeröffentlicht - 2009
Peer-Review-StatusJa

Konferenz

TitelWorld Congress on Medical Physics and Biomedical Engineering: Image Processing, Biosignal Processing, Modelling and Simulation, Biomechanics
Dauer7 - 12 September 2009
StadtMunich
LandDeutschland

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • Abdominal aortic aneurysm, Biomechanics, Patient specific modeling, Wall stress