公开(公告)号：WO2008054395A1

公开(公告)日：2008-05-08

申请号：PCT/US2006/043061

申请日：2006-11-03

Applicant: DAUSCH, David ,  VON RAMM, Olaf ,  CASTELLUCCI, John

Inventor： DAUSCH, David ,  VON RAMM, Olaf ,  CASTELLUCCI, John

IPC: A61B8/14

CPC classification number: A61B8/4488 ,  A61B8/12 ,  A61B8/4438 ,  A61B8/445 ,  B06B1/0622

Abstract: A method of generating an enhanced receive signal from a piezoelectric ultrasound transducer is described. The method comprises providing a piezoelectric ultrasound transducer comprising a piezoelectric element operable in flexural mode, receiving a acoustic signal by the piezoelectric element, applying a DC bias to the piezoelectric element prior to receiving the acoustic signal and/or concurrently with receiving the acoustic signal, and generating an enhanced receive signal from the piezoelectric element as a result of receiving the acoustic signal by the piezoelectric element. pMUT-based imaging probes using the above method are also described.

Abstract translation: 描述了从压电超声换能器产生增强的接收信号的方法。 该方法包括提供压电超声波换能器，其包括可弯曲模式操作的压电元件，通过压电元件接收声信号，在接收声信号之前和/或与接收声信号同时向压电元件施加DC偏压， 以及作为由压电元件接收声信号的结果，从压电元件产生增强的接收信号。 还描述了使用上述方法的基于pMUT的成像探针。