表1.不同颈总动脉内膜中层厚度分级与颈内动脉和颈动脉分叉处斑块分级情况.

• Figure 3. B-mode sonogram of carotid arterial plaque. Abnormal artery with focal protrusion of wall into lumen (arrow), the thickness is more than 1.3 mm,representing carotid plaque.