急性脑梗死患者颅内大动脉粥样硬化斑块的HR-MRI分析  

The Analysis of HR-MRI for Intracranial Atherosclerotic Plaques in Patients with Acute Cerebral Infarction

作　　者：廖荣信[1] 陈早 周理超[1] 谭长连[2] 张亚林[1] 瞿中威[1] LIAO Rong-xin;CHEN Zao;ZHOU Li-chao;TAN Chang-lian;ZHANG Ya-lin;QU Zhong-wei(Department of Radiology,V Changsha Central Hospital,Changsha 410004,Huan Province,China;不详)

机构地区：[1]湖南长沙市中心医院放射科,湖南长沙410004 [2]中南大学附属湘雅二医院,湖南长沙410004

出　　处：《中国CT和MRI杂志》2022年第12期17-18,共2页Chinese Journal of CT and MRI

基　　金：长沙市科技项目(kq1907020)。

摘　　要：目的探讨急性脑梗死患者颅内大动脉粥样硬化斑块在高分辨核磁共振成像(HR-MRI)检查中的表现。方法回顾性分析2018年8月至2020年8月在本院住院治疗并符合研究条件标准的48例急性脑梗死患者的常规头颅MR和HR-MRI影像资料,总结动脉粥样硬化斑块的分布位置、信号及有无强化等征象。结果本组病例48例急性脑梗死患者中共计50条颅内大血管发现粥样硬化斑块,分别为31条大脑中动脉和19条基底动脉。其中有25条位于大脑中动脉M1段,而6条位于M2段。本组病例中有39条血管硬化斑块为偏心性斑块,11条血管硬化斑块为环形斑块。其中32处偏心性斑块和2处环形斑块增强后有强化;偏心性斑块信号不均,在T1WI序列上以等或低信号为主,在T2WI序列上以高信号为主,PDW序列以稍高或高信号为主。结论大脑中动脉M1段是急性脑梗死患者动脉粥样硬化斑块好发部位;急性脑梗死患者动脉粥样硬化斑块以高信号或混杂信号多见,大部分斑块可发生强化,可能与其不稳定性有关。Objective To investigate the appearance of intracranial aortic atherosclerotic plaque in patients with acute cerebral infarction by high resolution magnetic resonance imaging(HR-MRI).Methods Routine cranial MR and HR-MRI imaging data of 48 patients with acute cerebral infarction who were hospitalized in our hospital from August 2018 to August 2020 and met the criteria of the study were retrospectively analyzed,and the distribution,signal and enhancement of atherosclerotic plaque were summarized.Results Atherosclerotic plaques were found in 50 large intracranial vessels in 48 patients with acute cerebral infarction in this group,including 31 middle cerebral arteries and 19 basilar arteries respectively.Of these,25 were in the M1 segment of the middle cerebral artery and six were in the M2 segment.In this group of cases,39 vascular sclerosis plaques were eccentric plaques and 11 vascular sclerosis plaques were annular plaques.Among them,32 eccentric plaques and 2 annular plaques were enhanced after enhancement.The signal of eccentric plaques was uneven,mainly isosignal or low signal on T1WI sequence,mainly high signal on T2WI sequence,and slightly high signal or high signal on PDW sequence.Conclusion The M1 segment of the middle cerebral artery is the most common site of atherosclerotic plaque in patients with acute cerebral infarction.Atherosclerotic plaques in patients with acute cerebral infarction are frequently characterized by high or mixed signals,Most of the plaques can be enhanced,which may be related to their instability.

关 键 词：急性脑梗死 高分辨率磁共振成像 动脉粥样硬化斑块 

分 类 号：R445.2[医药卫生—影像医学与核医学]