使用辐射力天平的超声治疗换能器的电声特性测量方法研究

Study on electro-acoustic characteristics and measurements of therapeutic ultrasonic transducer using radiation force balance

摘要: 论述和规范了工作于200 kHz~10 MHz频率范围内的超声治疗换能器的基本电声特性和参数定义,诠释了它们的物理意义和相互关系,研究并提出了一套基于辐射力和有效面积测量的发射换能器的电声参数的测量方法。对平面活塞型、球面聚焦型和圆柱面聚焦型换能器实施了测量,给出了实测结果。

Abstract: The basic characteristics and electro-acoustic parameters of therapeutic transducer in frequency range from 200 kHz to 10 MHz are expounded.Their physical significances and relations are explained.The measurement methods of these parameters based on detecting the radiation force and the effective area are proposed.The measurement results of a plane piston transducer,a spherically focusing transducer and a cylindrically focusing transducer are given.