Measurement of the acoustic nonlinearity parameter B/A of lossy medium in a focused field

被引：0
|
作者：
Zhang, D [1 ]
Chen, X [1 ]
Gong, XF [1 ]
机构：
[1] Nanjing Univ, Inst Acoust, State Key Lab Modern Acoust, Nanjing 210093, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2000年 / 45卷 / 14期
基金：
中国国家自然科学基金;
关键词：
focusing source; acoustic nonlinearity parameter; insert substitution method;
D O I：
10.1007/BF03182903
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
An analytical description for the linear and nonlinear acoustic fields in lossy medium of a focusing source is derived. The relationship of pressure amplitudes at focus for fundamental and the second harmonic waves is discussed. At high linear focusing gain G, a new method using the insert substitution method for measuring the acoustic nonlinear parameter B/A of biological tissues is presented. Results for some biological tissues are experimentally obtained.
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页码：1283 / 1287
页数：5
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