Department of Neurosurgery, Wakayama Rosai Hospital, 93-1 Kinomoto, Wakayama 640-8505, Japan.
Acta Neurochir (Wien). 2013 Aug;155(8):1559-63. doi: 10.1007/s00701-013-1773-2. Epub 2013 May 29.
Computational fluid dynamics (CFD) studies on cerebral aneurysms have attempted to identify surrogate hemodynamic parameters to predict rupture risk. We present a case of bilateral mirror image aneurysms, one of which ruptured soon after imaging. Wall shear stress values of the ruptured aneurysm changed by 20-30% after rupture because of change in the aneurysm shape. Findings from our case suggest that CFD studies comparing unruptured and ruptured aneurysms may not yield valid estimation on aneurysm rupture risk because of changes in aneurysm shape after rupture. Changes in aneurysm shape after rupture should be considered in CFD research.
计算流体动力学（CFD）研究脑动脉瘤试图确定替代血流动力学参数来预测破裂风险。我们报告了一例双侧镜像动脉瘤，其中一个在成像后不久破裂。破裂后，由于动脉瘤形状的变化，破裂动脉瘤的壁面切应力值变化了 20-30%。我们的病例发现表明，由于破裂后动脉瘤形状的变化，比较未破裂和破裂动脉瘤的 CFD 研究可能无法对动脉瘤破裂风险进行有效估计。破裂后动脉瘤形状的变化应在 CFD 研究中考虑。
