声学密度定量技术对颈动脉斑块致脑梗死的危险性的评价

目的　探讨声学密度定量技术评价颈动脉粥样斑块致脑梗死的危险性的价值。方法　分析脑梗死组与无脑梗死颈动脉组各类斑块的例数、狭窄程度 ,测定各类斑块声学密度值及复合斑块内各种回声面积占整个斑块面积百分比。结果　脑梗死组脂质斑块及复合斑块例数明显多于无脑梗死组 ,且复合斑块内低回声区域占整个斑块面积的百分比明显大于无脑梗死组。结论　声学密度定量技术能够评价颈动脉斑块的稳定性及危险性。

Evaluating Carotid Artery Plaques as a Risk Factor of Cerebral Infarction Using Acoustic Densitometry

Objective To assess the value of acoustic densitometry technique in evaluating carotid artery plague to be a risk factor of cerebral infarction.Methods The numbers of different plaques and the stenosis degree of the carotid artery were analysed and the IBS value of different plaques,the percentage of low echo,high intersity echo areas in the total plaques in the cerebral infarction group(CI group)and no cerebral infarction group(CON group)were detected.Results In CI group,the number of fatty plaques,complex plaques and the percentage of low echo areas in the total plaques were larger than those of the CON group.Conclusions AD technique can be used to evaluate the stability and risk of atherosclerotic plaques for cerebral infarction accidents.