不同回声类型颈动脉斑块超声造影增强强度的分析

被引：23

作者：

李超伦 ^{[1
]}

王文平 ^{[1
]}

何婉媛 ^{[1
]}

金雪娟 ^{[2
]}

范培丽 ^{[1
]}

俞清 ^{[1
]}

机构：

[1] 复旦大学附属中山医院超声科

[2] 上海市心血管病研究所

来源：

中华医学超声杂志(电子版) | 2012年 / 9卷 / 12期

关键词：

超声检查; 造影剂; 动脉粥样硬化; 颈动脉;

D O I：

暂无

中图分类号：

R445.1 [超声波诊断];

学科分类号：

100207 ;

摘要：

目的分析超声造影显示斑块内增强的程度与常规超声斑块回声强度之间的关系。方法颈动脉粥样硬化患者135例,其中双侧颈动脉病变的患者32例,共167个颈动脉斑块。所有患者超声造影检查时仪器参数设置保持一致。常规超声上将颈动脉斑块的回声分为低、中、混合及强回声4种类型。超声造影观察斑块内有无增强并将斑块增强的程度人为分为0～4级。定量分析计算动脉斑块内增强强度及斑块内增强强度与颈动脉管腔内增强强度的比值。结果不同回声类型颈动脉斑块超声造影增强分级的强度间差异有统计学意义(χMH=47.4,P<0.0001),斑块回声越低超声造影增强越明显。低回声斑块中有75.6%(31/41)达2级以上增强,而部分中等回声及混合斑块超声造影也可表现为明显增强,2级以上增强分别占56.8%(25/44)及62.3%(38/61)。强回声斑块则只有1个(1/21,4.8%)表现为2级增强。低、中、混合、强回声颈动脉斑块的超声造影增强强度分别为(4.33±3.34)dB、(3.71±3.40)dB、(3.16±2.56)dB、(0.96±0.37)dB,增强强度比值分别为0.24±0.17、0.21±0.17、0.19±0.13、0.06±0.02。不同回声类型颈动脉斑块的超声造影定量分析参数增强强度(t=7.75,P<0.0001)及增强强度比值(t=4.49,P<0.0001)的差异均有统计学意义,斑块回声越低,超声造影定量分析增强越显著,呈线性相关。结论超声造影可在常规超声评价斑块回声强弱的基础上提供更多关于斑块稳定性的信息,有助于对患者的筛选,进而采取合适的干预措施。

引用

页码：1052 / 1056

页数：5

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