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The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents

The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with... ORIGINAL RESEARCH INTERVENTIONAL The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents X A.P. Narata, X F.S. de Moura, X I. Larrabide, X C.M. Perrault, X F. Patat, X R. Bibi, X S. Velasco, X A.-C. Januel, X C. Cognard, X R. Chapot, X A. Bouakaz, X C.A. Sennoga, and X A. Marzo ABSTRACT BACKGROUNDANDPURPOSE: Treatment of intracranial bifurcation aneurysms with flow-diverter stents can lead to caliber changes of the distal vessels in a subacute phase. This study aims to evaluate whether local anatomy and flow disruption induced by flow-diverter stents are associated with vessel caliber changes in intracranial bifurcations. MATERIALSANDMETHODS: Radiologic images and demographic data were acquired for 25 patients with bifurcation aneurysms treated with flow-diverter stents. Whisker plots and Mann-Whitney rank sum tests were used to evaluate if anatomic data and caliber changes couldbelinked.Symmetry/asymmetryweredefinedasdiameterratio1symmetricanddiameterratio1asymmetric.Computational fluiddynamicswasperformedonidealizedandpatient-specificanatomiestoevaluateflowchangesinducedbyflow-diverterstentsinthe jailed vessel. RESULTS: Statistical analysis identified a marked correspondence between asymmetric bifurcation and caliber change. Symmetry ratios were lower for cases showing narrowing or subacute occlusion (medium daughter vessel diameter ratio 0.59) compared with cases with posttreat- ment caliber conservation (medium daughter vessel diameter ratio  0.95). Computational fluid dynamics analysis in idealized and patient- specific anatomies http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents

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Publisher
American Journal of Neuroradiology
Copyright
© 2018 by American Journal of Neuroradiology
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.A5471
Publisher site
See Article on Publisher Site

Abstract

ORIGINAL RESEARCH INTERVENTIONAL The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents X A.P. Narata, X F.S. de Moura, X I. Larrabide, X C.M. Perrault, X F. Patat, X R. Bibi, X S. Velasco, X A.-C. Januel, X C. Cognard, X R. Chapot, X A. Bouakaz, X C.A. Sennoga, and X A. Marzo ABSTRACT BACKGROUNDANDPURPOSE: Treatment of intracranial bifurcation aneurysms with flow-diverter stents can lead to caliber changes of the distal vessels in a subacute phase. This study aims to evaluate whether local anatomy and flow disruption induced by flow-diverter stents are associated with vessel caliber changes in intracranial bifurcations. MATERIALSANDMETHODS: Radiologic images and demographic data were acquired for 25 patients with bifurcation aneurysms treated with flow-diverter stents. Whisker plots and Mann-Whitney rank sum tests were used to evaluate if anatomic data and caliber changes couldbelinked.Symmetry/asymmetryweredefinedasdiameterratio1symmetricanddiameterratio1asymmetric.Computational fluiddynamicswasperformedonidealizedandpatient-specificanatomiestoevaluateflowchangesinducedbyflow-diverterstentsinthe jailed vessel. RESULTS: Statistical analysis identified a marked correspondence between asymmetric bifurcation and caliber change. Symmetry ratios were lower for cases showing narrowing or subacute occlusion (medium daughter vessel diameter ratio 0.59) compared with cases with posttreat- ment caliber conservation (medium daughter vessel diameter ratio  0.95). Computational fluid dynamics analysis in idealized and patient- specific anatomies

Journal

American Journal of NeuroradiologyAmerican Journal of Neuroradiology

Published: Feb 1, 2018

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