Acoustic Nonlinear Behaviour of Microbubble Contrast Agent |
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作者姓名: | 俞金飞 石涛 |
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作者单位: | [1]StateKeyLaboratoryofModernAcoustics&InstituteofAcoustics,NanjingUniversity,Nanjing210093 [2]DepartmentofRadiologyandJeffersonUltrasoundResearchandEducationInstitute,ThomasJefferson |
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摘 要: | We have investigated the nonlinear characteristics of a microbubble contrast agent Sonazoid (Nycomed,Norway),including the second,thire,1/2-order,3/2-order and 5/2-order harmonics,We have measured the 1/2-order subharmonic response to different transmission sound pressures.We have found that subharmonic signals connot be generated until the acoustic pressure reaches a certain value,which is the most different subharmonic from high harmonics,This results is favourable for the further study of the subharmonic in the bubble liquid.The 3/2-order ultraharmonic response to acoustic pressure was also measured.
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关 键 词: | 造影剂 声学非线性行为 实验 |
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