MR对西宁地区颈动脉斑块患者颈动脉狭窄及Willis环代偿与脑梗死关系的评价

发布时间：2018-01-24 16:41

本文关键词： 颈动脉斑块颈动脉狭窄 Willis环脑梗死 MRI　出处：《青海大学》2017年硕士论文　论文类型：学位论文

【摘要】：目的:运用3.0T MR技术评价西宁地区颈动脉斑块患者颈动脉狭窄程度及Willis环代偿情况,并探讨与脑梗死相关关系。方法:收集本院来自西宁地区的117例颈动脉斑块患者行头颈部MRI检查,分析比较对照组及脑梗死组两组间颈动脉斑块情况和颅内Willis环情况。观察颈动脉斑块部位及狭窄程度、Willis环具体分型及环的完整性、各组成血管显示和变异情况。结果:1、本研究脑梗死组与对照组在斑块发生部位上无明显差异(P0.05),均以颈动脉分叉处多见,分别占50%、48.07%。2、颈动脉斑块引起血管不同程度狭窄时,脑梗死组与对照组存在差异(P0.05)。不同程度狭窄时观察颅内Willis环前、后循环及整环完整程度无差异(P0.05)。3、脑梗死组Willis环变异率80.39%,其整环、前、后循环完整率分别为19.61%、62.75%、27.45%,与对照组均存在差异(P0.05)。4、脑梗死组与对照组ACA-A1段血管变异率分别为14.70%、6.06%,两组ACA-A1段变异率存在差异(P0.05)。脑梗死组ACo A显示率为74.51%,PCo A显示率为54.90%,与对照组无明显差异(P0.05)。结论:在颈部动脉斑块患者中,颈动脉的不同程度狭窄影响脑梗死的发生率。颈动脉斑块并发脑梗死患者Willis环完整性低,ACo A及PCo A开放代偿虽不显著,但A1段变异率略高。
[Abstract]:Objective: to evaluate the degree of carotid artery stenosis and the compensation of Willis ring in patients with carotid plaque in Xining area by 3.0T Mr technique. Methods: 117 patients with carotid plaque from Xining were examined by MRI. To compare the carotid plaque and intracranial Willis circle between the control group and the cerebral infarction group, and to observe the location of carotid plaque and the degree of stenosis. Results there was no significant difference in the location of plaque between the cerebral infarction group and the control group (P 0.05). Most of them were located at the bifurcation of carotid artery, accounting for 50%, respectively. 48.07.2When carotid plaque caused different degree of stenosis, there was a difference between the cerebral infarction group and the control group (P 0.05). At different degree of stenosis, the intracranial Willis ring was observed. There was no difference in the degree of posterior circulation and global integrity. The variation rate of Willis ring in cerebral infarction group was 80.39. The complete rate of the whole loop, anterior circulation and posterior circulation were 19.61% respectively. There was significant difference between the cerebral infarction group and the control group (P < 0.05). The variation rate of ACA-A1 in cerebral infarction group and control group was 14.70% and 6.06%, respectively. There was a significant difference between the two groups in the variation rate of ACA-A1 segment (P 0.05), and the ACo A display rate in the cerebral infarction group was 74.51% (P < 0.05). The display rate of ACo A was 54.90% in the cerebral infarction group. There was no significant difference between the control group and the control group (P 0.05). Conclusion: in patients with carotid artery plaque. Carotid artery stenosis affected the incidence of cerebral infarction in patients with carotid plaques complicated with cerebral infarction. The low integrity of Willis loop and the open compensations of ACoA and PCo A were not significant in patients with carotid plaques complicated with cerebral infarction. But the variation rate of A1 segment was slightly higher.
【学位授予单位】：青海大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R743.3

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