Rivaz Hassan, Rohling Robert
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, Canada.
Med Image Comput Comput Assist Interv. 2005;8(Pt 1):613-20. doi: 10.1007/11566465_76.
Vibro-elastography is a new medical imaging method that identifies the mechanical properties of tissue by measuring tissue motion in response to a multi-frequency external vibration source. Previous research on vibro-elastography used ultrasound to measure the tissue motion and system identification techniques to identify the tissue properties. This paper describes a hand-held probe with a combined vibration source and ultrasound transducer. The design uses a vibration absorption system to counter-balance the reaction forces from contact with the tissue. Simulations and experiments show a high level of vibration absorption. The first elastograms from the probe are also shown.
振动弹性成像术是一种新的医学成像方法，它通过测量组织对多频外部振动源的响应运动来识别组织的机械特性。先前关于振动弹性成像术的研究使用超声来测量组织运动，并运用系统识别技术来识别组织特性。本文描述了一种将振动源与超声换能器相结合的手持式探头。该设计采用了一个振动吸收系统，以平衡与组织接触产生的反作用力。模拟和实验表明该系统具有高度的振动吸收能力。文中还展示了该探头生成的首批弹性成像图。
