摘要
随着超声诊断广泛的临床应用和技术上的不断改进 ,获得生物介质病变组织更多、更为精细的内部结构与信息的要求逐渐被提了出来 ,为此就必须考虑超声波在生物介质中传播的非线性效应。非线性声学对医学超声诊断与治疗都具有非常重要的现实意义。文章试图从气泡造影剂、生物介质的非线性参数及二阶谐波反射成像 3个方面来评述非线性声学在医学诊断中的应用 ,同时特别强调二阶谐波反射的理论基础 ,还用
The nonlineas effect of ultrasound wave propagation in the biological medium is considered in order to oftain the more and meticulous internal structure and information of pathological changes tissue with the wide climical practice and technical constant inprovement of ultrasound diagnosis. Therefore,the nonlinear acoustics concerning medical ultrasound diagnosis and cure has very important realistic significance. This article attempts to review the application of nonlinear acoustics in medical diagnosis from three aspects of bubble contrast agents,the nonlinear paramenter of biological medium and second harmonic reflection. Also,three specimens are made the numerical calculation and theory background for imaging by second harmonic reflection is especially emphasised.
出处
《声学技术》
CSCD
2002年第1期34-37,49,共5页
Technical Acoustics
