在动脉壁圆周方向上产生扭转波并测量其传播速度。
Generation of a torsion wave and measuring its propagation velocity in the circumferential direction of arterial wall.
作者信息
Zhang Xiaoming, Greenleaf James F
机构信息
Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA.
出版信息
Ultrasonics. 2006 Dec 22;44 Suppl 1:e165-8. doi: 10.1016/j.ultras.2006.06.054. Epub 2006 Jul 5.
Increased stiffness of the arteries has recently gained acceptance as a potential risk for cardiovascular and many other diseases. Pulse wave velocity (PWV) is widely used for estimating the stiffness of an artery. However, PWV is an indicator of average artery stiffness between two measuring points. In addition to measured PWV, the diameter and thickness are needed to calculate the elastic modulus of the artery. We present a new method to generate a torsion wave in the artery wall and measure its propagation speed in the circumferential direction of the artery. The elastic modulus of the artery can be calculated from the torsion wave velocity without the knowledge of the thickness of the artery, which is difficult to measure with accuracy.
动脉僵硬度增加最近已被公认为心血管疾病和许多其他疾病的潜在风险。脉搏波速度（PWV）被广泛用于估计动脉僵硬度。然而，PWV是两个测量点之间动脉平均僵硬度的指标。除了测量的PWV外，还需要直径和厚度来计算动脉的弹性模量。我们提出了一种在动脉壁中产生扭转波并测量其在动脉圆周方向上传播速度的新方法。无需知道难以精确测量的动脉厚度，就可以根据扭转波速度计算动脉的弹性模量。
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