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首页> 外文会议>International Symposium on Advances in Computational Heat Transfer >RUPTURE RISK PREDICTION OF INTRACRANIAL ANEURYSMS USING OPEN SOURCE CFD SOFTWARE
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RUPTURE RISK PREDICTION OF INTRACRANIAL ANEURYSMS USING OPEN SOURCE CFD SOFTWARE

机译：使用开源CFD软件破裂颅内动脉瘤的破裂风险预测

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Computational Fluid Dynamics (CFD) is an important tool for blood flow simulation in intracranial aneurysms. The objective of this study is to describe CFD patterns in intracranial aneurysms based on simulations in order to interfere with clinical decisions to treat patients with this disease. We randomly selected 8 intracranial aneurysms with good quality CT angiogram (CTA). The open-source VMTK (Vascular Modeling Toolkit) software was used to create surface models and CFD meshes. The open-source OpenFOAM CFD solver was used to perform the CFD simulations and ParaView was used for post-processing. Typical parameters associated with aneurysm rupture, such as wall shear stress (WSS), oscillatory shear index (OSI) and WSS gradient, were evaluated to determine if they may help predict aneurysm rupture probability. We have found regions where the WSS remained low during the entire cardiac cycle combined with high values of OSI and regions where the WSS remained high combined high WSS gradient. We associate these regions with high risk of rupture.
机译：计算流体动力学（CFD）是颅内动脉瘤中血流模拟的重要工具。本研究的目的是根据模拟描述颅内动脉瘤中的CFD模式，以干扰治疗患者这种疾病的临床决策。我们随机选择了8种颅内动脉瘤，具有良好的CT血管造影（CTA）。开源VMTK（血管建模工具包）软件用于创建表面模型和CFD网格。开源OpenFoam CFD求解器用于执行CFD仿真，并使用PARAVIEW进行后处理。评估与动脉瘤破裂相关的典型参数，例如壁剪切应力（WSS），振荡剪切指数（OSI）和WSS梯度，以确定它们是否可以有助于预测动脉瘤破裂概率。我们发现了在整个心周期期间WSS保持低位的地区，结合了与OSI和地区的高值，其中WSS保持高的高WSS梯度。我们将这些地区与严重破裂的风险联系起来。

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