超声对脑梗死患者颈动脉软斑块近心端角度的研究

目的 评价超声对脑梗死患者颈动脉软斑块近心端角度测量的价值.方法 176例颈动脉粥样软斑块患者分为脑梗死组(67例)与非脑梗死组(109例),运用线阵探头分别对颈动脉粥样软斑块进行检查,于颈动脉短轴观测量血管面积和残存管腔面积,计算颈动脉面积狭窄率,于颈动脉长轴观分别测量软斑块的厚度和近心端斑块角度,并进行两组间比较.结果 脑梗死组软斑块近心端的角度明显大于非梗死组,差异有统计学意义(P<0.05),斑块近心端角度13.0°作为判断标准的灵敏度和特异度分别为79.1%、71.6%.而颈动脉面积狭窄率和斑块厚度两组之间差异无统计学意义(P>0.05).结论 颈动脉斑块近心端角度可作为反映斑块稳定性的一个参考指标.

Study on the approximal side angle of carotid plaques in patients with cerebral infarction using ultrasonography

Objective To assess the value of approximal side angle of carotid atherosclerotic plaques in patients with cerebral infarction by ultrasonography.Methods One hundred and seventy six patients with carotid atherosclerotic plaques were examined with uItrasonography and divided into two groups:cerebral infarction group (n=67)and none cerebral infarction group(n=109).Vessel area and residual lumen area of carotid artery were measured in axial view using linear probe.Area stenosis rate was calculated.The approximal side angle and thickness of plaque were measured respectively.The results of two groups were compared.Results The approximal side angle of plaque of cerebral group was significantly higher than that of none cerebral infarction groups(P<0.05).The sensitivity and specificity for approximal side angle of plaque(cutoff value:13.0°)were 79.1%,71.6%,respectively.There were no significant difference of area stenosis rate and plaque thickness between two groups(P>0.05).Conclusions The approximal side angle of plaque can be regarded as a novel index to assess the stability of plaque.