目的 探讨高分辨磁共振血管成 像在检测症状性颈动脉狭窄中的诊断价 值。方法 收集2012年7月-2016年8月我 院收治的88例经数字减影血管造影(DSA) 确诊的脑血管疾病患者为研究对象，依 据是否为症状性颈动脉狭窄分为症状组 (44例)及无症状组(44例)，2组均行高分 辨磁共振血管成像技术检查，以DSA检查 结果为金标准，比较2组影像学检查结 果。结果 症状组双侧颈动脉、颈内动 脉斑块分布概率均较无症状组显著高(P ＜0.05)；44例患者共检出87支动脉狭 窄，DSA检出轻、中、重度狭窄及闭塞各 53、16、15、3支，症状组经高分辨磁 共振血管成像技术检查共检出轻、中、 重度狭窄及闭塞各53、15、16、3支，准 确率分别为100.00%、93.75%、93.33%、 100.00%，与DSA检出率相较无明显差异 (P＞0.05)。结论 高分辨磁共振血管成 像对症状性颈动脉狭窄的检出率及狭窄 程度的诊断准确率高，可作为诊断症状 性颈动脉狭窄的首选方案。

Objective To investigate the value of high-resolution magnetic resonance angiography (MRA) in the diagnosis of symptomatic carotid artery stenosis. Methods A total of 88 patients with cerebrovascular diseases diagnosed by digital subtraction angiography (DSA) in our hospital from July 2012 to August 2016 were selected as subjects, and they were divided into the symptomatic group (44 cases) and asymptomatic group (44 cases) according to the type of carotid artery stenosis. Both groups were examined with high-resolution MRA. With the results of DSA as the golden standard, the imaging findings were compared between the two groups. Results The probabilities of plaques in bilateral carotid arteries and internal carotid artery in the symptomatic group were significantly higher than those in the asymptomatic group (P<0.05). A total of 87 carotid arteries stenosis were detected in 44 patients. The numbers of arteries with mild, moderate and severe stenosis detected by DSA were 53, 16, 15 and 3. In the symptomatic group, the numbers of arteries with mild, moderate and severe stenosis and occlusion examined by high-resolution magnetic resonance angiography were 53, 15, 16 and 3, and the accurate rates were 100.00%, 93.75%, 93.33% and 100.00%. Compared the detection rates of DSA, there were no significant differences (P>0.05). Conclusion The accurate rates of high-resolution magnetic resonance angiography are high in the diagnosis of symptomatic carotid artery stenosis and the degree of stenosis. It can be used as the preferred method for diagnosing symptomatic carotid artery stenosis.