Takenoya Naoki, Oya Soichi, Watanabe Takehiro, Shojima Masaaki, Matsui Toru, Yoshino Yoshikazu
Department of Neurosurgery, Medical Corporation Shokokai San-ai Hospital, Saitama, Japan.
Department of Neurosurgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
Asian J Neurosurg. 2024 Jun 24;19(3):435-438. doi: 10.1055/s-0044-1787869. eCollection 2024 Sep.
Predicting the shape of the occluded middle cerebral artery (MCA) from the contralateral MCA might help catheterization in endovascular mechanical thrombectomy (EMT). We analyzed magnetic resonance (MR) angiography in 100 consecutive patients who had MR imaging for diseases other than acute ischemic stroke. To assess the symmetricity of MCA, the shape of M1, length of M1, number of M2, number of early branches (EBs), and distance from the top of the internal carotid artery to EB were investigated. The shape of M1 was upward in 42%, horizontal in 47%, and downward in 11%. The M1 shape was the same on both sides in 64%, which exceeded the probability assumed to be left-right independent. The number of M2 trunks and EBs matched left and right in 86 and 55% of patients, respectively; however, these agreement rates were not higher than those with independent left and right sides. No left-right correlation was found between the M1 length and the distance from the internal carotid artery to EB. Based on our data, the symmetry of MCA was observed only in the shape of the M1 segment. This finding could be beneficial for EMT targeting MCA embolisms.
从对侧大脑中动脉（MCA）预测闭塞大脑中动脉的形态可能有助于血管内机械取栓术（EMT）中的导管插入。我们分析了100例因急性缺血性卒中以外的疾病进行磁共振成像（MR）的连续患者的MR血管造影。为评估MCA的对称性，研究了M1段的形态、M1段的长度、M2分支的数量、早期分支（EBs）的数量以及从颈内动脉顶端到EB的距离。M1段的形态向上的占42%，水平的占47%，向下的占11%。两侧M1段形态相同的占64%，超过了假设左右独立时的概率。分别有86%和55%的患者M2主干和EBs的数量左右匹配；然而，这些一致率并不高于左右独立时的情况。未发现M1段长度与从颈内动脉到EB的距离之间存在左右相关性。基于我们的数据，仅在M1段的形态上观察到MCA的对称性。这一发现可能对针对MCA栓塞的EMT有益。
