Authors
Masanori Murakami, Fei Jiang, Tatsuo Yamashita, Shinsuke Mochizuki
Published in
Annals of vascular diseases. Volume 19. Issue 1. Epub Oct 23, 2026.
Abstract
The aim of this study was to compare the effects of balloon-expandable and self-expanding stents on vessel wall mechanics and hemodynamics in a patient-specific saccular abdominal aortic aneurysm model.
A patient-specific aneurysm model was constructed using computed tomography images, and balloon-expandable and self-expanding stent models were created. Aortic wall stress was evaluated by contact analysis. Fluid-structure interaction analyses were performed at 5 representative phases selected from the cardiac cycle. Mean intra-aneurysmal flow velocity, wall shear stress (WSS), pressure loss, and energy loss were compared.
The balloon-expandable stent produced greater localized aortic wall stress than the self-expanding stent, whereas wall stress was more uniformly distributed with the self-expanding stent. Both stents reduced the mean intra-aneurysmal flow velocity, WSS, pressure loss, and energy loss compared with the no-stent model. However, greater reductions in WSS, pressure loss, and energy loss were noted with the balloon-expandable stent than with the self-expanding stent.
Balloon-expandable and self-expanding stents exhibited different effects on vessel wall mechanics and hemodynamics. The findings indicate the importance of evaluating both hemodynamic and mechanical effects when assessing stent-vessel interactions.
PMID:
42947723
Bibliographic data and abstract were imported from PubMed on 28 Oct 2026.
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