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| A STUDY ON THE ACOUSTIC NONLINEAR PARAMETER IN BIOLOGICAL MEDIA WITH HIGR ATTENUATION | |
| 作者姓名： | 孙永臣 董彦武 赵恒元 |
| 作者单位： | Institute of Applied Acoustics，Shaanxi Teachers University，Institute of Applied Acoustics，Shaanxi Teachers University，Institute of Applied Acoustics，Shaanxi Teachers University |
| 基金项目： | The project supported by national natural science foundation of China |
| 摘 要： | Using the comparative method with the corrections of the diffraction and attenuation,we measured thenonlinear parameter B/A of several biological media with high attenuation.The acoustic nonlinear parameterB/A of biological media such as heart,liver,spleen,kidney,and muscle is about 7,that of bile and urine about6,and about 9.6 for fat.The nonlinear parameter of the fat is more than others mainly due to high lipid contentin it.Ichida‘s result about the fat is discussed. |
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