Abstract: Imaging technology and doppler sonography are used for diagnosing the middle cerebral artery(MCA) stenosis. Digital subtract angiography(DSA) has been considered the gold standard for the evaluation of MCA stenosis so far. Transcranial Doppler sonography(TCD) is a convenient noninvasive screening test for the cause of the ischemic cerebrovascular diseases. This article systematically reviewed the applications for diagnosing and grading MCA stenosis, especially in TCD, in order to advance a reasonable check sequence for ischemic cerebrovascular patients.

Key words: Middle cerebral artery; Stenosis; Diagnosis; Doppler sonography

摘要： 目前对大脑中动脉（middle cerebral artery，MCA）狭窄的诊断方法包括两方面，即影像学技术和多普勒超声检查。影像学技术中数字减影血管造影术（digital subtract angiography，DSA）为诊断MCA狭窄的金标准。经颅多普勒超声（transcranial Doppler sonography，TCD）由于操作便捷、价廉，已成为缺血性脑血管病血管狭窄病因方面的筛查工具。本文总结了国内外应用不同技术对诊断MCA狭窄的研究，着重阐明了TCD在此方面的应用，旨在提出一个合理、经济的检查顺序，优化医疗资源配置。

关键词: 大脑中动脉; 狭窄; 诊断; 多普勒超声