从正常和动脉样硬化动脉壁的时间域回声模式评估:一个体外研究
E Picano1, L Landini, F Lattanzi
1Istituto di Fisiologia clinica del CNR, Pisa, Italy.
Circulation
|March 1, 1988
概括
这项研究量化评估了动脉壁中的水相-内密接口. 脂肪斑表现出最低的反射,表明与正常和其他动脉样硬化动脉壁类型相比,有明显的结构差异.
科学领域:
- 血管生物学 血管生物学
- 生物医学超声波 生物医学超声波
- 病理学 病理学 病理学
背景情况:
- 动脉样硬化涉及动脉壁中的斑块积累.
- 了解动脉组织的声学特性对于诊断至关重要.
- 水相亲密接口对超声波信号的贡献还没有完全被描述.
研究的目的:
- 量化评估水相-内密接口在正常和动脉样硬化的人类动脉中的作用.
- 用超声波反射特征区分动脉样硬化斑块的不同阶段.
主要方法:
- 在体外分析了75个人类新鲜动脉样本 (15个正常样本,15个脂肪样本,15个纤维脂肪样本,15个纤维脂肪样本,15个质样本).
- 使用宽带传感器 (4至14 MHz) 来获取超声波信号.
- 用分贝 (dB) 测量了水相内心反射.
主要成果:
- 水相内心反射在脂肪斑中显著最低 (-35.3 +/- 2.5 dB).
- 正常 (-13.2 +/- 8.8 dB),纤维脂肪 (-20.4 +/- 8.3 dB),纤维状 (-13.0 +/- 9.7 dB) 和状 (-5.9 +/- 3.4 dB) 板块的反射率更高.
- 在正常和脂肪样本中观察到来自内心介质过渡的低振幅回声,与其他病理子集更强烈的反射形成鲜明对比.
结论:
- 动脉壁的时间域回声模式可以作为斑块结构的有价值指标.
- 独特的超声波反射模式区分正常的动脉壁与各种动脉样硬化斑块类型.
- 对水相-内密界面的定量分析提供了对动脉壁组成和病理学的见解.
相关概念视频
Atherosclerosis I: Introduction
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...


