| 摘要: |
| ［摘要］ 目的 研究磁共振血管成像技术对急性脑梗死患者颅外段颈动脉狭窄的诊断价值。方法 对32例临床怀疑颈动脉狭窄的急性脑梗死患者行磁共振血管成像（magnetic resonance angiography MRA）及数字减影血管造影（digital subtraction angiography，DSA）检查，DSA以NASCET法计算狭窄率，MRA分别以NASCET法和截面积法计算狭窄率。结果 以DSA诊断为金标准，32例128条颅外段颈动脉狭窄，MRA以NASCET法诊断的敏感性63%，特异性100%, 准确性78.1%，Kappa=0.593；MRA截面积法诊断的敏感性63%，特异性100%，准确性79.7%，Kappa=0.622。结论 MRA在诊断急性脑梗死颅外段颈动脉狭窄病变时, 具有较高的敏感性、准确性和特异性, 可用于筛选可疑颅外段颈动脉狭窄或闭塞的患者, 使大部分患者免除DSA检查，但MRA尚不能代替DSA。 |
| 关键词: 急性脑梗死 颈动脉 磁共振血管成像 血管造影 |
| DOI： |
| 分类号:R 743.33 |
| 基金项目:广西自然科学基金资助(桂科基0447028) |
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| Comparison of the value of magnetic resonance artery and digital subtraction angiography in carotid artery-extracranial segment stenosis of acute cerebral infarction |
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CHEN Yuan, ZHONG Wei-zhang, MA Long-bai, et al.
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Department of Neurology, the People′s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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| Abstract: |
| ［Abstract］ Objective To evaluate the value of magnetic resonance angiography in carotid artery-extracranial segment stenosis of acute cerebral infarction. Methods Magnetic resonance angiography(MRA) and digital subtraction angiography(DSA) were performed in 32 patients with clinical suspected carotid stenosis in acute cerebral infarction patients. Stenosis measurement according to NASCET criteria for DSA was used, and stenosis measurement for MRA according to NASCET and cross section criteria was used. Results The stenosis measurement according to NASCET criteria for DSA was used, of the 128 carotid arteries assessed on MRA in 32 patients, the sensitivity, specificity, veracity of MRA according to NASCET was 63%, 100%, 78.1%, respectively, Kappa=0.593. The sensitivity, specificity, veracity of MRA according to cross section criteria was 63%, 100%, 79.7%, respectively, Kappa=0.622. Conclusion Sensitivity, specificity and veracity of MRA are higher to estimate carotid artery-extracranial segment stenosis, and could be used as a screening test for the diagnosis and follow-up examination of the carotid artery stenosis. For mostly patients with carotid stenosis, which don′t need to DSA checking. But in some patients DSA should be performed. |
| Key words: Acute cerebral infarction Cranial carotid Magnetic resonance angiograpby Digital subtraction angiography |
