Document Detail


Effect of aneurysm and ICA morphology on hemodynamics before and after flow diverter treatment.
MedLine Citation:
PMID:  24692666     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Flow diverter (FD) treatment aims to slow down blood flow inside the aneurysm and increase the average time that blood resides in the aneurysm.
OBJECTIVE: To investigate the relationship between vessel and aneurysm morphology and their influence on the way in which braided FDs change intra-aneurysmal hemodynamics.
MATERIALS AND METHODS: Twenty-three patient-specific intracranial aneurysm models at the supraclinoid segment of the internal carotid artery were studied. Vessel and aneurysm morphology was quantified and blood flow was modeled with computational fluid dynamics simulations. The relation between morphologic variables and the hemodynamic variables, WSS (wall shear stress) and totime (ratio between the aneurysm volume and inflow at the aneurysm neck), was assessed statistically.
RESULTS: Intra-aneurysmal flow was less dependent on the vessel than on aneurysm morphology. In summary, after treatment with a FD, a greater aneurysm flow reduction and redirection to the vessel main stream should be expected for (a) aneurysms located further away from the curvature peak, (b) aneurysms on the inner side of the bend, (c) aneurysms with no proximal stenosis, and (d) larger aneurysms.
CONCLUSIONS: Although the change in intra-aneurysmal hemodynamics after FD treatment strongly depends on the morphology of the aneurysm, the hemodynamic effect of a FD is also linked to the parent vessel morphology and the position and orientation of the aneurysm with respect to it.
Authors:
Ignacio Larrabide; Arjan J Geers; Hernán G Morales; Martha L Aguilar; Daniel A Rüfenacht
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-1
Journal Detail:
Title:  Journal of neurointerventional surgery     Volume:  -     ISSN:  1759-8486     ISO Abbreviation:  J Neurointerv Surg     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101517079     Medline TA:  J Neurointerv Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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