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1. 发明申请

US20100036244A1 Nonlinear Elastic Wave Measurement and Imaging with Two-Frequency Elastic Wave Pulse Complexes 有权
标题翻译：具有双频弹性波脉冲复合的非线性弹性波测量和成像
公开(公告)号：US20100036244A1
公开(公告)日：2010-02-11
申请号：US12500518
申请日：2009-07-09
申请人： Bjørn A.J. Angelsen , Rune Hansen , Tonni F. Johansen , Svein-Erik Masøy , Sven Peter Nasholm , Thor Tangen
发明人： Bjørn A.J. Angelsen , Rune Hansen , Tonni F. Johansen , Svein-Erik Masøy , Sven Peter Nasholm , Thor Tangen
IPC分类号： A61B8/00
CPC分类号： A61B8/08 , A61B8/485 , G01S7/52022 , G01S7/52038 , G01S7/52049 , G01S7/52077 , G01S7/52095 , G01S15/8929 , G01S15/8952
摘要： Methods and instruments for suppression of multiple scattering noise and extraction of nonlinear scattering components with measurement or imaging of a region of an object with elastic waves, where elastic wave pulse complexes are transmitted towards said region where said pulse complexes are composed of a high frequency (HF) and a low frequency (LF) pulse with the same or overlapping beam directions and where the HF pulse is so close to the LF pulse that it observes the modification of the object by the LF pulse at least for a part of the image depth. The frequency and/or amplitude and/or phase of said LF pulse relative to said HF pulse varies for transmitted pulse complexes in order to nonlinearly manipulate the object elasticity observed by the HF pulse along at least parts of its propagation, and where received HF signals are picked up by transducers from one or both of scattered and transmitted components of the transmitted HF pulses. Said received HF signals are processed to form measurement or image signals for display, and where in the process of forming said measurement or image signals said received HF signals are one or both of delay corrected with correction delay in the fast time (depth-time), and pulse distortion corrected in the fast time, and combined in slow time to form noise suppressed HF signals or nonlinear scattering HF signals that are used for further processing to form measurement or image signals. The methods are applicable to elastic waves where the material elasticity is nonlinear in relation to the material deformation.
摘要翻译：用于抑制多个散射噪声的方法和仪器，并且通过用弹性波测量或成像物体的区域来提取非线性散射分量，其中弹性波脉冲复合物被传输到所述脉冲复合体由高频组成的区域（ HF）和具有相同或重叠的波束方向的低频（LF）脉冲，并且其中HF脉冲如此接近LF脉冲，其至少对于图像深度的一部分通过LF脉冲观察对象的修改。所述LF脉冲相对于所述HF脉冲的频率和/或幅度和/或相位对于传输的脉冲复合体而变化，以便非线性地操纵HF脉冲沿其传播的至少部分观察到的物体弹性，并且其中接收的HF信号由发射的HF脉冲的散射和透射分量中的一个或两个的换能器拾取。所接收的HF信号被处理以形成用于显示的测量或图像信号，并且在形成所述测量或图像信号的过程中，所述接收的HF信号是在快速时间（深度时间）中用修正延迟校正的延迟中的一个或两个，并且在快速时间中校正脉冲失真，并且在慢时间组合以形成用于进一步处理以形成测量或图像信号的噪声抑制HF信号或非线性散射HF信号。该方法适用于材料弹性相对于材料变形非线性的弹性波。

2. 发明申请

US20140150556A1 Measurement and Imaging of Scatterers with Memory of Scatterer Parameters Using at Least Two-Frequency Elastic Wave Pulse Complexes 有权
标题翻译：具有记录散射体参数的散射体的测量和成像使用至少两个频率的弹性波脉冲复合
公开(公告)号：US20140150556A1
公开(公告)日：2014-06-05
申请号：US14044334
申请日：2013-10-02
申请人： Bjørn A.J. ANGELSEN , Rune Hansen , Tonni F. Johansen , Svein-Erik Måsøy , Sven Peter Nasholm , Thor Andreas Tangen
发明人： Bjørn A.J. ANGELSEN , Rune Hansen , Tonni F. Johansen , Svein-Erik Måsøy , Sven Peter Nasholm , Thor Andreas Tangen
IPC分类号： G01N29/34
CPC分类号： G01N29/343 , A61B8/08 , A61B8/485 , G01S7/52022 , G01S7/52038 , G01S7/52049 , G01S7/52077 , G01S7/52095 , G01S15/8929 , G01S15/8952
摘要： Measurement or imaging of elastic wave nonlinear scatterers with a memory of scattering parameters comprises selecting LF pulses having characteristics to change the scattering parameters of nonlinear scatterers. A transmit time relation is selected so that the incident HF pulse propagates sufficiently close to the LF pulse that the effect of the incident LF pulse on its scatterer parameters is observed by the HF pulse. At least two elastic wave pulse complexes comprising a high frequency (HF) pulse and a selected low frequency (LF) pulse are transmitted towards the region. Received HF signals are combined to form nonlinear HF signals representing the scatterers with memory, with suppression of received HF signals from other scatterers. At least one of the received HF signals may be corrected by time delay correction and/or speckle correction with a speckle correction filter, determined by movement of the scattering object. Systems are also disclosed.
摘要翻译：具有散射参数记忆的弹性波非线性散射体的测量或成像包括选择具有改变非线性散射体散射参数特性的LF脉冲。选择发射时间关系，使得入射的HF脉冲充分接近LF脉冲传播，通过HF脉冲观察入射LF脉冲对其散射体参数的影响。包括高频（HF）脉冲和选择的低频（LF）脉冲的至少两个弹性波脉冲复合体被发送到该区域。接收的HF信号被组合以形成表示具有存储器的散射体的非线性HF信号，抑制来自其他散射体的接收的HF信号。所接收的HF信号中的至少一个可以通过用散射物体的运动确定的具有散斑校正滤波器的时间延迟校正和/或散斑校正来校正。还披露了系统。

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