在CREST-2试验中的状腺斑块特征
Brajesh K Lal1, Georges Jreij1, Matthew Chrencik1
1Department of Vascular Surgery, University of Maryland, College Park.
JVS-vascular insights
|September 4, 2025
概括
双重超声波可靠地测量心血管斑块的特征和中风风险. 对CREST-2数据的分析表明斑块的特征有所不同,有助于未来的中风预防策略.
科学领域:
- 血管外科
- 医学成像
- 心血管疾病
背景情况:
- 无症状的动脉狭窄手术提供了适度的中风预防,需要更好的风险分层超出狭窄程度.
- 斑块破坏和血栓形成与特定的解剖学和组织学变化有关.
- 在无症状心血管狭窄症的心血管再循环和医疗管理试验 (CREST-2) 中,对双重超声 (DUS) 斑块生物标志物进行了研究,以确定中风风险.
研究的目的:
- 使用DUS测量状腺斑块特征的可靠性.
- 在CREST-2患者中报告出血脉DUS衍生的狭窄和斑块特征.
- 评估斑块的形态特征及其与中风风险的关联.
主要方法:
- 503名CREST-2患者的B模式DUS图像的半自动化数字图像分析.
- 测量斑块的纵向切口面积,灰度中位数 (GSM),Gray-Weale分类和组织组成 (IPH,脂质,纤维组织,肌肉,).
- 使用布兰德-阿尔特曼图和相关系数进行可靠性测试;评估斑块不稳定性标记.
主要成果:
- 在DUS衍生的状斑块测量中获得了高可靠性 (观察者间和观察者内相关性).
- 该队列表现出较大的斑块 (平均面积为62毫米2),具有不同的GSM (平均58) 和Gray- Weale分类 (平均3.5).
- 显著的比例显示不稳定的斑块特征:22. 8%具有低GSM,30. 0%具有实质性的斑块内出血 (IPH).
结论:
- 现场生成,核心实验室解释的DUS可在多个中心提供可靠的喉斑块特征.
- 尽管高度狭窄,但CREST-2队列显示斑块异质性.
- 进一步的试验分析将确定斑块异质性是否影响对再血管和医疗管理的反应.
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