PDF(Pubmed)
Abstract：
BACKGROUND: Silent magnetic resonance angiography reduces metal artifacts, enabling clear visualization of the clipped neck following surgical clipping of cerebral aneurysms. This study aimed to delineate the morphology of the clipped neck complex in cerebral aneurysms using three-dimensional (3D) multifusion imaging of silent magnetic resonance angiography and fast spin echo magnetic resonance cisternography. Additionally, computational fluid dynamics analysis was utilized to evaluate the hemodynamics of the parent vessel at the clipped neck, allowing for a detailed assessment of hemodynamics at the clipped neck.
METHODS: The 3D multifusion image enabled visualization of the orientation and shape of the clip within the clipped neck complex, alongside the morphology of the parent vessel. In the hemodynamic analysis of the parent vessel at the clipped neck, areas of high-intensity magnitude of wall shear stress (WSSm) variation corresponding to the clip\'s contour, along with significant vector of wall shear stress (WSSv) variation related to vector directionality, were visualized in 3D. The intentional residual neck, coated with muscle grafts, was depicted as an area with low WSSm variation values and high WSSv variation values.
CONCLUSIONS: Three-dimensional multifusion imaging, along with computational fluid dynamics analysis of the parent vessels, facilitated both the morphological and hemodynamic visualization and assessment of the clipped neck complex following neck clipping surgery for cerebral aneurysms. https://thejns.org/doi/10.3171/CASE24194.
METHODS: The 3D multifusion image enabled visualization of the orientation and shape of the clip within the clipped neck complex, alongside the morphology of the parent vessel. In the hemodynamic analysis of the parent vessel at the clipped neck, areas of high-intensity magnitude of wall shear stress (WSSm) variation corresponding to the clip\'s contour, along with significant vector of wall shear stress (WSSv) variation related to vector directionality, were visualized in 3D. The intentional residual neck, coated with muscle grafts, was depicted as an area with low WSSm variation values and high WSSv variation values.
CONCLUSIONS: Three-dimensional multifusion imaging, along with computational fluid dynamics analysis of the parent vessels, facilitated both the morphological and hemodynamic visualization and assessment of the clipped neck complex following neck clipping surgery for cerebral aneurysms. https://thejns.org/doi/10.3171/CASE24194.
摘要：
背景：无声磁共振血管造影减少了金属伪影，使脑动脉瘤手术夹闭后颈部的清晰可视化。本研究旨在使用无声磁共振血管造影术和快速自旋回波磁共振脑池造影的三维（3D）多融合成像来描绘脑动脉瘤中夹颈复合体的形态。此外,计算流体动力学分析用于评估夹颈部的母体血管的血液动力学，可以详细评估颈部的血流动力学。
方法：3D多融合图像使夹颈部复合体内夹子的方向和形状可视化，沿着父血管的形态。在夹住颈部的母体血管的血液动力学分析中，对应于夹子轮廓的高强度墙剪应力(WSSm)变化的区域，连同与矢量方向性相关的壁剪应力(WSSv)变化的显著矢量，在3D中可视化。故意残留的脖子，涂有肌肉移植物，被描绘为具有低WSSm变化值和高WSSv变化值的区域。
结论：三维多融合成像，以及母血管的计算流体动力学分析，促进了脑动脉瘤颈部夹闭手术后颈部夹闭复合体的形态学和血流动力学可视化以及评估。https://thejns.org/doi/10.3171/CASE24194.
方法：3D多融合图像使夹颈部复合体内夹子的方向和形状可视化，沿着父血管的形态。在夹住颈部的母体血管的血液动力学分析中，对应于夹子轮廓的高强度墙剪应力(WSSm)变化的区域，连同与矢量方向性相关的壁剪应力(WSSv)变化的显著矢量，在3D中可视化。故意残留的脖子，涂有肌肉移植物，被描绘为具有低WSSm变化值和高WSSv变化值的区域。
结论：三维多融合成像，以及母血管的计算流体动力学分析，促进了脑动脉瘤颈部夹闭手术后颈部夹闭复合体的形态学和血流动力学可视化以及评估。https://thejns.org/doi/10.3171/CASE24194.
