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颈内动脉系统作为颅脑供血的主要来源,其内膜斑块形成、动脉狭窄程度均是引发缺血性脑卒中的危险因素。颈内动脉狭窄主要依靠影像学诊断,以往主要是通过数字减影血管成像的有创性检查,现在随着成像技术的进步及成像效果的提高,一些无创性检查手段诸如超声、磁共振血管造影成像和CT血管造影成像等也逐渐应用于临床并显示出优越性,有望将来可以在颈内动脉狭窄的诊断中部分或全部代替数字减影血管成像。但各检查手段的敏感性、特异性有差异。
Internal carotid artery system as a major source of cerebral blood supply, the formation of intimal plaque, the degree of arterial stenosis are risk factors for ischemic stroke. Internal carotid artery stenosis mainly rely on imaging diagnosis, in the past mainly through digital subtraction angiography invasive examination, and now with the imaging technology advances and imaging results improve, some noninvasive methods such as ultrasound, magnetic resonance angiography Imaging and CT angiography imaging are gradually applied to the clinical and show the superiority in the future is expected in the diagnosis of carotid artery stenosis in part or in place of digital subtraction angiography. However, the sensitivity of various means of inspection, there are differences in specificity.