用锥面靶测量大口径聚焦换能器声功率的计算讨论  

Discussions of the ultrasound power calculating of large-aperture focused transducer intercepted by cone reflector

作　　者：霍彦明[1] 叶兆雄[1] 宋文章[1] 吴敏[1] 王智彪[1] 

机构地区：[1]重庆医科大学医学超声工程研究所,重庆400041

出　　处：《声学技术》2002年第4期168-170,共3页Technical Acoustics

基　　金：九五重点科技攻关项目(96-905-02-01);国家自然科学基金委资助(30070217)

摘　　要：辐射压力法是超声功率测量中常采用的方法,用辐射压力法测量声功率中对于不同反射靶面的功率与压力之间的换算关系是非常重要的。文章从能量守恒基础出发,推导了大口径聚焦换能器声场作用于锥面反射靶的功率与压力的换算关系,并将结果应用于凹锥面反射靶计算。In the ultrasound power measurement of ultrasound transducer, the radiation pressure method is often used. To calculate the converting relationship between the ultrasound power and the pressure of interceptor is very important. Based on the energy conversation law, it is deduced the converting relationship between ultrasound power and the pressure formed by ultrasound beam from large-aperture focused transducer in this paper. The result is applied to the calculation of concave cone reflector.

关 键 词：锥面靶 测量 大口径聚焦换能器 计算 辐射压力法 HIFU 声功率 高强度聚焦超声 

分 类 号：TB524[理学—物理] TB552[理学—声学]