Computational Fluid Dynamics within Bifurcated Abdominal Aortic Stent-Grafts:
作者： Benjamin A. Howell , Tom Kim , Angela Cheer , Harry Dwyer , David Saloner
DOI: 10.1177/152660280701400204
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摘要: Purpose:To assess the hemodynamic forces on a bifurcated abdominal aortic stent-graft under realistic conditions of flow, blood pressure, and sac pressure.Methods:Computational fluid dynamics was used to study temporal spatial variations in surface pressure shear through cardiac cycle models stent-grafts derived from computed tomography 4 patients who had previously undergone endovascular repair aneurysm (AAA). The trunk, bifurcation, limbs graft were analyzed separately as parts unified whole. Analyses repeated varying reflecting different perigraft flow diameter change.Results:Pressure-related far larger than flow-related all 3 segments cases. largest acted at bifurcation stent-graft. High pressures, seen with endoleak or dilatation, associated reduced transmural low-pr...
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