| Computer simulation of acoustic nonlinear parameter tomography |
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| 引用本文： | ZHANG Dong and GONG Xiufen(Institute of Acoustics,Nanjing University,Nanjing 210008). Computer simulation of acoustic nonlinear parameter tomography[J]. 声学学报：英文版, 1994, 0(2) |
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| 作者姓名： | ZHANG Dong and GONG Xiufen(Institute of Acoustics Nanjing University Nanjing 210008) |
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| 作者单位： | Institute of Acoustics，Nanjing University，Nanjing 210008 |
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| 摘 要： | I.IntroductionUltrasonicimaginghasbcenwide1yusedinthcfie1dofclinicaldiagnosis,becauseitcanvisualizethetissuetharacterizationandinternalstructureofbiologicalobjectsbyacousticwave.Usingconventionalultrasonicimagingtechnique,theimagesofacousticlinearparameterssuchassoundve1ocity,acousticimpedenccandattenuationcoefficientmaybeobtained.Thesehavebecometheeffectivemethodsofu1trasonicdiagnosis.How-ever,inordertoobscrvctheearlystageofcanccr,weintendtoobtainmoreaccurateandmorecompleteinformationaboutth…
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Computer simulation of acoustic nonlinear parameter tomography |
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| ZHANG Dong and GONG Xiufen. Computer simulation of acoustic nonlinear parameter tomography[J]. Chinese Journal of Acoustics, 1994, 0(2) |
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| Authors: | ZHANG Dong and GONG Xiufen |
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| Abstract: | Acoustic nonlinearity paramcter B / A is a new important parameter in ultrasonic tissue characterization. In this paper, we present the nonlinear theory of a finite amplitude plane sound wave propagating in a layer medium by Burgers' equation and apply this analysis in the case of imaging with the second harmonic wave. A computer simulation of acoustic nonlinear parameter imaging was carried out from the second harmonic data in a conventional CT algorithm. The reconstructed imagcs were obtained by using filtered back projection algorithm. The tomography of acoustic nonlinear parameter for simple phantoms was reconstructed with quite good quality. |
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| Keywords: | Simulation Nonlinear parameter Tomography |
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