基于剪切波的肝脏纤维化超声粘弹性检测系统

Shearwave-Based Ultrasound Viscoelasticity Measurement System for Evaluation of Liver Fibrosis

描述了一种基于目前医用超声硬件的肝脏粘弹性测试系统。该系统利用超声辐射力推动肝脏软组织形成瞬态响应,探测该响应中的剪切波传播,从而估算肝脏组织的弹性和粘性。本研究证实肝脏的杨氏模量和粘性系数可以通过剪切波成功定量检测,并且可以用目前已有的医用超声系统实现而无需额外硬件,从而为医生提供一种新的廉价而有效便捷的诊断手段。

This paper describes a liver elasticity and viscosity measurement system based on existing medical ultrasound platforms. This system relies on acoustic radiation force to invoke transient response on soft tissue,and employs displacement estimation algorithms to detect the propagation of shear wave. The research proves that the velocity of the shear wave may serve as a reliable estimation of the Young＇s modulus and viscosity coefficient of the liver tissue,and existing commercial products may be easily adapted to support this technique without extra hardware cost.