Nonlinear effects of the finite amplitude ultrasound wave in biological tissues

作     者：Xiaozhou Liu Xiufen Gong Shigong Ye Weiya Zhang 

作者机构：Nanjing Univ Inst Acoust State Key Lab Modern Acoust Nanjing 210093 Peoples R China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2000年第45卷第6期

页      面：508-512页

核心收录：

学科分类：071011[理学-生物物理学] 0710[理学-生物学] 07[理学] 

基　　金：National Natural Science Foundation of China,NSFC: 19834040 Natural Science Foundation of Jiangsu Province 

主　　题：nonlinear effects efficiency factor effective attenuation coefficient effective propagation distance. 

摘      要：Nonlinear effects will occur during the transmission of the finite amplitude wave in biological tissues. The theoretical prediction and experimental demonstration of the nonlinear effects on the propagation of the finite amplitude wave at the range of biomedical ultrasound frequency and intensity are studied. Results show that the efficiency factor and effective propagation distance will decrease while the attenuation coefficient increases due to the existence of nonlinear effects. The experimental results coincided quite well with the theory. This shows that the effective propagation distance and efficiency factor can be used to describe quantitatively the influence of nonlinear effects on the propagation of the finite amplitude sound wave in biological tissues.