Evaluation of relation among aneurysmal neck, parent artery, and daughter arteries in middle cerebral artery aneurysms, by three-dimensional digital subtraction angiography
Evaluation of relation among aneurysmal neck, parent artery, and daughter arteries in middle cerebral artery aneurysms, by three-dimensional digital subtraction angiography
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DOI：
10.1007/s10143-005-0379-4
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发表时间：
2005-07-01
影响因子：
2.8
通讯作者：
Kurisu, K
中科院分区：
文献类型：
--
作者：
Sadatomo, T;Yuki, K;Kurisu, K
颅内动脉瘤通常发生在动脉分叉处。然而，在大脑中动脉(MCA)动脉瘤中，我们经常发现，动脉瘤颈并不一定只存在于动脉分叉处。本研究应用三维数字减影血管造影术对大脑中动脉动脉瘤的瘤颈、载瘤动脉、子动脉之间的关系进行了评价。对20例大脑中动脉动脉瘤患者(男9例，女11例)进行了检查。动脉瘤总数为22个，其中未破裂10个，破裂12个。测量动脉瘤大小和载瘤动脉与两个子动脉之间的夹角。此外，根据颈部位置将动脉瘤分为两种类型。因此，当颈位于载瘤动脉中线的延伸处时，它被定义为经典的颈型动脉瘤，当它不是时，它被定义为偏颈型动脉瘤。偏颈型15例，典型颈型7例。有趣的是，在偏颈型中，所有的动脉瘤都位于载瘤动脉夹角较窄的子动脉一侧，93%的患者存在于颈子动脉的子动脉与其他子动脉相比直径较小。
Intracranial aneurysms usually occur at arterial bifurcations. However, in middle cerebral artery (MCA) aneurysms, we often find that the aneurysmal neck does not necessarily exist just on the arterial bifurcation. In this study, we have evaluated the relation among aneurysmal neck, parent artery, and daughter arteries in middle cerebral artery aneurysms, by three-dimensional digital subtraction angiography. Twenty consecutive patients (9 men and 11 women) with MCA aneurysms were examined. The total number of aneurysms was 22, of which 10 aneurysms were unruptured and 12 were ruptured. Aneurysmal sizes and angles between the parent artery and each of the two daughter arteries were measured. Furthermore, aneurysms were classified into two types based on neck location. Thus, when the neck was located on the extension of the midline of the parent artery, it was defined as a classical neck type aneurysm, and when it was not, it was defined as a deviating neck type aneurysm. There were 15 cases of deviating and 7 cases of classical neck type. Interestingly, in the deviating neck type, all the aneurysms existed on the side of the daughter arteries of which the angles between parent arteries were narrower, and in 93%, the sizes of the daughter arteries in which the neck existed were smaller compared with other daughter arteries.