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首页> 外文期刊>American Journal of Neuroradiology >The Perianeurysmal Environment: Influence on Saccular Aneurysm Shape and Rupture
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The Perianeurysmal Environment: Influence on Saccular Aneurysm Shape and Rupture

机译：动脉瘤周围环境：对囊性动脉瘤形状和破裂的影响

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PURPOSE: The purpose of this study was to evaluate whether interactions between intracranial cerebral saccular aneurysms and the perianeurysmal environment (PAE), in the form of contact constraints, influence aneurysm shape and risk of rupture. METHODS: A total of 190 consecutive aneurysms during a 34-month period were retrospectively analyzed. Of these, 124 were ruptured (group 1) and 66 were unruptured (group 2). Pretreatment high-resolution CT angiography was available for each aneurysm and was the determinant inclusion criterion. Aneurysm size and location, type of hemorrhage, initial Glasgow Coma Scale rating, World Federation of Neurological Societies grade, Fisher grade, and presence of concomitant aneurysms were recorded. Contact constraints between aneurysms and anatomical structures of the PAE were identified for each aneurysm and further subdivided into balanced or unbalanced depending on whether contact constraints occurred symmetrically on the aneurysm wall. Regular or irregular shape was recorded and correlated to contact constraints. RESULTS: Compared with unruptured aneurysms, ruptured aneurysms were found to be larger and more irregular, to develop more contact constraints with the PAE, and to show higher rates of unbalanced contact constraints. Ruptured aneurysms had a tendency to be found in locations of a constraining PAE. Irregular shape was positively correlated with the presence of an unbalanced contact constraint, even in the absence of obvious contour deformations from an imprint of an adjacent structure. CONCLUSION: The existence of contact constraints between intracranial saccular aneurysms and the PAE were shown to influence shape and risk of aneurysm rupture. Modifications of wall shear stress by contact constraints are discussed. Analysis of contact constraints between aneurysm and the PAE could be considered additional parameters in the assessment of risk of aneurysm rupture.
机译：目的：本研究的目的是以接触限制的形式评估颅内脑囊囊性动脉瘤与围动脉瘤性环境之间的相互作用 方法：回顾性分析34个月 期间的190次连续性动脉瘤。其中，破裂的 （第1组）和破裂的66（第2组）。每种动脉瘤均可以进行高分辨率的 CT血管造影术，这是决定性的 纳入标准。动脉瘤的大小和位置，出血类型， 最初的格拉斯哥昏迷量表等级，世界神经学联合会 社会等级，费希尔等级以及伴发的动脉瘤 已记录。确定每个动脉瘤的动脉瘤与PAE解剖结构之间的接触约束，并根据接触约束是否对称发生进一步细分为平衡的或不平衡的 在动脉瘤 墙上。记录规则或不规则形状并将其与接触约束相关。 结果：与未破裂的动脉瘤相比，破裂的动脉瘤 更大且更不规则，以使用PAE开发更多的 接触约束，并显示更高比例的 不平衡接触约束。破裂的动脉瘤倾向于在约束性PAE的位置发现 。不规则形状 与不平衡的 接触约束存在正相关，即使在没有明显的轮廓变形 的情况下也没有相邻结构的印记。 结论：颅内 囊性动脉瘤与PAE之间存在接触约束，这会影响形状 和动脉瘤破裂的风险。讨论了通过接触约束对壁面剪应力 的修改。在评估动脉瘤破裂风险时，可将动脉瘤与PAE之间的接触约束分析 视为附加的 参数。

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  • 来源
    《American Journal of Neuroradiology》 |2006年第3期|00000504-00000512|共9页
  • 作者

    D. San Millán Ruíz; H. Yilmaz; A.R. Dehdashti; A. Alimenti; N. de Tribolet; D.A. Rüfenacht;

  • 作者单位

    Section of Neuroradiology, Department of Radiology and Medical Informatics Geneva University Hospital, Geneva, Switzerland;

    Section of Neuroradiology, Department of Radiology and Medical Informatics Geneva University Hospital, Geneva, Switzerland;

    Department of Neurosurgery, Lausannne University Hospital, Lausanne, Switzerland;

    Section of Neuroradiology, Department of Radiology and Medical Informatics Geneva University Hospital, Geneva, Switzerland;

    Department of Neurosurgery, Geneva University Hospital, Geneva, Switzerland;

    Section of Neuroradiology, Department of Radiology and Medical Informatics Geneva University Hospital, Geneva, Switzerland;

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