颈动脉粥样硬化斑块不同部位超声造影特征

Study on the enhanced character of contrast-enhanced ultrasonography of different parts of carotid atherosclerotic plaques

目的探讨颈动脉粥样硬化斑块不同部位的超声造影(CEUS)表现特征。方法运用实时超声造影技术显示78例颈动脉斑块的新生血管灌注模式,比较斑块不同部位(包括上游肩部,下游肩部,顶部,中央部)的超声造影强化指标。结果斑块的新生血管超声造影灌注模式表现为强化始于斑块基底部和内膜面,并逐渐向斑块内部呈点片状或短线状分布,以斑块周边部分强化明显,斑块上游肩部、下游肩部、顶部和中央部四个部位强化程度依次由高到低(P<0.05)。结论超声造影能够实时观察和评价颈动脉斑块不同部位新生血管的分布情况,为斑块易损部位的评估提供了新的影像学方法。

Objective To discuss he enhanced character of contrast-enhanced ultrasonography of different parts of carotid atherosclerotic plaques. Methods Seventy-Eight patients with carotid atherosclerotic plaques were examined with real time contrast-enhanced uhrasonography （CEUS）. The perfusion modes of the neovascularization in carotid atherosclerotic plaques were observed. Quantitative analysis results of different parts of the plaque were compared. Results The enhanced intensity degree of different parts of the plaque ranged from high to low. The parts of the plaque were the upstream shoulder, the top, the downstream shoulder and the central part（P〈0.05）. Conclusion The real time contrast-enhanced uhrasonography can assess the vulnerable parts of carotid atherosclerotic plaque non invasive and quantita tively.