高分辨血管MR成像对急性脑梗死患者大脑中动脉粥样硬化斑块的诊断价值

Diagnostic value of High Resolution Vascular MR Imaging in Middle Cerebral Atheromatous plaques in patients with Acute Stroke

目的:探究高分辨血管MR成像对急性脑梗死患者大脑中动脉粥样硬化斑块的诊断价值。方法:选取2018年7月~2019年8月我院收治的大脑中动脉狭窄患者共70例,将急性脑梗死患者纳入观察组(n=23),短暂性脑缺血患者(n=47)纳入对照组,回顾性收集其临床资料。两组均行常规扫描、高分辨血管MR成像检查,观察并比较两组临床特征、斑块形态特征、斑块强化特点。结果:观察组斑块位置位于腹侧壁和上侧壁比例高于对照组,位于背侧壁和下侧壁比例低于对照组;观察组斑块表面形态不平整比例高于对照组;观察组狭窄重构方式为负性比例高于对照组;观察组狭窄率和斑块负荷均高于对照组。观察组斑块强化程度中混杂信号的比例较对照组大,观察组强化率显著高于对照组,差别具有统计学意义。结论:高分辨血管MR成像结果显示急性脑梗死大脑中动脉粥样硬化性患者斑块主要分布在腹侧壁和上侧壁,表面形态不平整、负性重构、斑块负荷大、混杂信号比例偏高,强化率及狭窄率高,,对急性脑梗死具有一定诊断价值。

Objective To explore the diagnostic value of high resolution vascular MR imaging in middle cerebral athero-sclerotic plaques in patients with acute stroke.Methods Between a total of 70 patients with middle cerebral artery stenosis treated in our hospital from July 2018 to August 2019 were selected.The patients with acute stroke were included in the observation group(n=35)and the patients with transient cerebral ischemia(n=35)in the control group.High resolution vascular MR imaging and conventional scanning were performed to observe and compare the clinical features,plaque morphology and plaque enhancement characteristics between the two groups.Results The proportion of plaque in the observation group was higher than that of the control group,and the proportion of the lower side wall and the lower side wall was lower than that of the control group,and the surface morphology of the plaque in the observation group was higher than that of the control group.The negative proportion of the group was higher than that of the control group.The stenosis rate and plaque load in the observation group were higher than those in the control group.The proportion of mixed signal in the observation group was higher than that in the control group,and the enhancement rate in the observation group was significantly higher than that in the control group.Conclusion The high-resolution blood vessel MR imaging results show that the plaque of the atherosclerotic patients in the brain is mainly distributed on the abdominal side wall and the upper side wall,the surface morphology is not flat,the negative reconstruction,the plaque burden is large,the proportion of the mixed signals is large,and has a certain diagnostic value for acute cerebral apoplexy.