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- Title
A Computational Fluid Dynamics Study Pre- and Post-Stent Graft Placement in an Acute Type B Aortic Dissection.
- Authors
Karmonik, Christof; Bismuth, Jean; Davies, Mark G.; Shah, Dipan J.; Younes, Houssam K.; Lumsden, Alan B.
- 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.
- Subjects
BLOOD circulation; HEMODYNAMICS; AORTIC dissection; DIGITAL image processing; MAGNETIC resonance imaging; SURGICAL stents; BIOINFORMATICS; DIAGNOSIS; THERAPEUTICS
- Publication
Vascular & Endovascular Surgery, 2011, Vol 45, Issue 2, p157
- ISSN
1538-5744
- Publication type
Article
- DOI
10.1177/1538574410389342