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<meta name="DC.Title" content="Hemodynamics in a Lethal Basilar Artery Aneurysm Just before Its Rupture" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Hemodynamics is thought to play an important role in the mechanisms of cerebral aneurysm initiation, progression, and rupture. The purpose of this study was to present a hemodynamic study of a cerebral aneurysm immediately before its rupture to assess whether previously identified hemodynamic characteristics would classify this aneurysm in the high-risk category.

MATERIALS AND METHODS: A patient-specific computational fluid dynamics model was constructed from 3D rotational angiographic images acquired just hours before the aneurysm had ruptured. A pulsatile flow simulation was carried out, and the hemodynamics characterized by the concentration of the inflow jet, the size of the flow impingement region, and the complexity and stability of the flow pattern.

RESULTS: We found that the aneurysm had a concentrated inflow jet that impacted onto a small region of the dome of the aneurysm and created a complex, unstable flow pattern.

CONCLUSIONS: This study supports the proposition that hemodynamic characteristics derived from image-based computational models can be used to identify cerebral aneurysms at high risk for rupture." />
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MATERIALS AND METHODS: A patient-specific computational fluid dynamics model was constructed from 3D rotational angiographic images acquired just hours before the aneurysm had ruptured. A pulsatile flow simulation was carried out, and the hemodynamics characterized by the concentration of the inflow jet, the size of the flow impingement region, and the complexity and stability of the flow pattern.

RESULTS: We found that the aneurysm had a concentrated inflow jet that impacted onto a small region of the dome of the aneurysm and created a complex, unstable flow pattern.

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MATERIALS AND METHODS: A patient-specific computational fluid dynamics model was constructed from 3D rotational angiographic images acquired just hours before the aneurysm had ruptured. A pulsatile flow simulation was carried out, and the hemodynamics characterized by the concentration of the inflow jet, the size of the flow impingement region, and the complexity and stability of the flow pattern.

RESULTS: We found that the aneurysm had a concentrated inflow jet that impacted onto a small region of the dome of the aneurysm and created a complex, unstable flow pattern.

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      <h1 class="highwire-cite-title" id="page-title">Hemodynamics in a Lethal Basilar Artery Aneurysm Just before Its Rupture</h1>  
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    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">January 2009,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(1) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">95-98; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A1312 </span></div>
  
  
  
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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" class="content-block-markup" xmlns:xhtml="http://www.w3.org/1999/xhtml"><div xmlns:xhtml="http://www.w3.org/1999/xhtml" class="contributors"><ol class="contributor-list" id="contrib-group-1"><li class="contributor" id="contrib-1"><span class="name">J.R. Cebral</span><a id="xref-aff-1-1" class="xref-aff" href="#aff-1">a</a>, </li><li class="contributor" id="contrib-2"><span class="name">S. Hendrickson</span><a id="xref-aff-2-1" class="xref-aff" href="#aff-2">b</a> and </li><li class="last" id="contrib-3"><span class="name">C.M. Putman</span><a id="xref-aff-3-1" class="xref-aff" href="#aff-3">c</a></li></ol><ol class="affiliation-list"><li class="aff"><a id="aff-1" name="aff-1"></a><address><sup>a</sup>Center for Computational Fluid Dynamics, George Mason University, Fairfax, Va</address></li><li class="aff"><a id="aff-2" name="aff-2"></a><address><sup>b</sup>Department of Computational and Data Sciences, and Department of Mathematics, George Mason University, Fairfax, Va</address></li><li class="aff"><a id="aff-3" name="aff-3"></a><address><sup>c</sup>Department of Interventional Neuroradiology, Inova Fairfax Hospital, Falls Church, Va</address></li></ol><ol class="corresp-list"><li class="corresp" id="corresp-1">Please address correspondence to Juan R. Cebral, Center for Computational Fluid Dynamics, George Mason University, 4400 University Dr, MSN 6A2, Fairfax, VA 22030; e-mail: <span class="em-link"><span class="em-addr">jcebral{at}gmu.edu</span></span></li></ol></div></div><a href="http://ajnr-stage2.stage.highwire.org/content/30/1/95.full" class="hw-link hw-link-article-full-text" data-icon-position="" data-hide-link-title="0">View Full Text</a></div>  </div>

  
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