5-1 The evaluation of stenosis of cervical carotid arteries. Comparison between carotid echography (area stenosis) and angiography (NASCET, ECST)

We evaluated the correlation between the measuring methods of cervical stenosis of carotid arteries, such as diameter methods with angiography NASCET：North American Symptomatic Carotid Endarterectomy Trial. ECST： European Carotid Surgery Trial) and area method with carotid echography. Amoug 20cases who were examined cerebroangiography from November, 2003 to March, 2004, 16 carotid arteries were enrolled, which were examined carotid echography. We compared the stenotic rates measured with each methods. The stenotic rates measured with area methods correlated significantly with stenotic rates measured with ECST (Pearson's coefficient 0.834, p