A computational fluid dynamics study pre- and post-stent graft placement in an acute type B aortic dissection. uri icon

Overview

abstract

  • PURPOSE: To demonstrate the capability of computational fluid dynamics (CFD) for quantifying hemodynamic forces pretreatment/posttreatment in type B aortic dissection (TB-AD). METHODS: From CFD simulations initialized with dynamic magnetic resonance image data, wall shear stress (WSS) and dynamic pressure (dynP) changes post endovascular treatment were quantified. RESULTS: After 1 year follow-up, thoracic aortic segment was completely remodeled, and persistent, nonthrombosed false lumen in the abdominal aorta was noted. Pretreatment, large WSS (>5 Pa) and dynP (>80 Pa) occurred at entrance tear and a stenotic region in the true lumen (TL). Posttreatment, WSS was lower than 3.3 Pa and dynP was lower than 55 Pa in TL, except at proximal end of the stent graft and at reentrance tear. Two focal locations of high dynP existed within the stent graft. CONCLUSIONS: Computational fluid dynamics may provide quantitative assessment of hemodynamic wall forces in TB-AD potentially of interest for follow-up examinations.

publication date

  • December 13, 2010

Research

keywords

  • Aortic Aneurysm, Abdominal
  • Aortic Dissection
  • Blood Vessel Prosthesis Implantation
  • Computer Simulation
  • Endovascular Procedures
  • Hemodynamics
  • Models, Cardiovascular

Identity

Scopus Document Identifier

  • 79953878322

Digital Object Identifier (DOI)

  • 10.1177/1538574410389342

PubMed ID

  • 21156714

Additional Document Info

volume

  • 45

issue

  • 2