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1. 发明申请

US20090039738A1 High frequency ultrasound transducers based on ceramic films 审中-公开
标题翻译：基于陶瓷膜的高频超声换能器
公开(公告)号：US20090039738A1
公开(公告)日：2009-02-12
申请号：US12156616
申请日：2008-06-03
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
IPC分类号： H01L41/047
CPC分类号： B06B1/0692 , H01L2224/16225 , H01L2224/48091 , H01L2224/73253 , H01L2224/73265 , H01L2924/00014
摘要： A design and a manufacturing method of ultrasound transducers based on films of ferro-electric ceramic material is presented, the transducers being particularly useful for operating at frequencies above 10 MHz. The manufacturing technique can involve tape-casting of the ceramic films, deposition of the ceramic films onto a substrate with thick film printing, sol-gel, or other deposition techniques, where manufacturing methods for load matching layers and composite ceramic layers are described. The designs also involve acoustic load matching layers that provide particularly wide bandwidth of the transducers, and also multi-band operation of the transducers. The basic designs can be used for elements in a transducer array, that provides the frequency characteristics of the single element transducers, for array steering of the focus and possibly also direction of a pulsed ultrasound beam at high frequencies and multi-band frequencies.
摘要翻译：提出了一种基于铁电陶瓷材料薄膜的超声换能器的设计和制造方法，该换能器对于在10MHz以上的频率下工作特别有用。制造技术可以涉及陶瓷膜的流延，用厚膜印刷，溶胶 - 凝胶或其他沉积技术将陶瓷膜沉积到基底上，其中描述了负载匹配层和复合陶瓷层的制造方法。这些设计还涉及提供特别宽的传感器带宽的声学负载匹配层，以及换能器的多频带操作。基本设计可用于传感器阵列中的元件，其提供单个元件换能器的频率特性，用于在高频和多频带频率下的聚焦的阵列转向和可能的脉冲超声波束的方向。

2. 发明授权

US06622562B2 Multi pre-focused annular array for high resolution ultrasound imaging 有权
标题翻译：用于高分辨率超声成像的多预聚焦环形阵列
公开(公告)号：US06622562B2
公开(公告)日：2003-09-23
申请号：US10041309
申请日：2002-01-07
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： C01N924
CPC分类号： B06B1/0625
摘要： An annular ultrasound bulk wave transducer array for electronic depth steering of symmetric focus from a near focus Fn to a far focus Ff includes elements that are divided into k groups with different fixed prefocusing. The central group participates in beam forming from Fn to Ff, the next outer group in beam forming from Fn1>Fn to Ff, and the kth outer group in beam forming from Fnk>Fn,k−1 to Ff. The fixed focus for the kth group is selected at Fk between Fnk and Ff. In this manner, beam formation close to Fn is performed only by the central group. By steering the focus outward from Fn, the focal diameter increases and, at a depth where the focal diameter exceeds a limit, the next outer group of elements is included in beam formation. This increase in aperture area reduces the focal diameter with subsequent increases in diameter as the focus is further steered toward Ff. In the same manner, the kth group of elements is included in beam formation for steered foci deeper than Fnk, presenting a growing aperture that enables maintenance of the diameter below limits with a low total number of elements and avoids impractically small widths of the annular elements. The elements may also be subdivided in the angular direction, allowing for phase aberration correction.
摘要翻译：用于从近焦点Fn到远焦点Ff的对称焦点的电子深度转向的环形超声体波换能器阵列包括被分成具有不同固定预聚焦的k个组的元件。中心组参与从Fn到Ff的波束形成，Fn1> Fn到Ff的波束形成中的下一个外部组，以及从Fnk> Fn，k-1到Ff的波束形成中的第k个外部组。在Fk和Ff之间选择第k组的固定焦点。以这种方式，靠近Fn的波束形成仅由中心组执行。通过从Fn向外转向焦点，焦点直径增加，并且在焦点直径超过极限的深度处，下一个外部元件组被包括在波束形成中。当焦点进一步转向Ff时，孔径面积的这种增加减小焦距直径随后的直径增加。以相同的方式，第k组元件被包括在比Fnk更深的转向焦点的束形成中，呈现出增长的孔径，其能够以较低的元件数保持直径低于极限，并避免不切实际的小的环形元件的宽度。这些元件还可以在角度方向上细分，允许进行相位差校正。

3. 发明授权

US06761692B2 High frequency and multi frequency band ultrasound transducers based on ceramic films 有权
标题翻译：基于陶瓷膜的高频和多频带超声换能器
公开(公告)号：US06761692B2
公开(公告)日：2004-07-13
申请号：US10180990
申请日：2002-06-24
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen , Jarle Østgård
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen , Jarle Østgård
IPC分类号： A61B800
CPC分类号： B06B1/0688
摘要： A design and a manufacturing method of ultrasound transducers based on films of ferro-electric ceramic material is presented, the transducers being particularly useful for operating at frequencies above 10 MHz. The designs also involve acoustic load matching layers that provides particularly wide bandwidth of the transducers, and also multiple electric port transducers using multiple piezoelectric layers, for multi-band operation of the transducers over an even wider band of frequencies that covers ˜4 harmonics of a fundamental band. A transceiver drive system for the multi-port transducers that provides simple selection of the frequency bands of transmitted pulses as well as transmission of multi-band pulses, and reception of scattered signals in multiple frequency bands, is presented. The basic designs can be used for elements in a transducer array, that provides all the features of the single element transducer for array steering of the focus and possibly also direction of a pulsed ultrasound beam at high frequencies and multi-band frequencies. The manufacturing technique can involve tape-casting of the ceramic films, deposition of the ceramic films onto a substrate with thick film printing, sol-gel, or other deposition techniques, where manufacturing methods for load matching layers and composite ceramic layers are described.
摘要翻译：提出了一种基于铁电陶瓷材料薄膜的超声换能器的设计和制造方法，该换能器对于在10MHz以上的频率下工作特别有用。这些设计还涉及提供换能器特别宽的带宽的声学负载匹配层，以及使用多个压电层的多个电气端口换能器，用于在覆盖〜4个谐波的更宽频带上的换能器的多频带操作基本乐队。提供了一种用于多端口换能器的收发器驱动系统，其提供了传输脉冲的频带的简单选择以及多频带脉冲的传输以及在多个频带中的散射信号的接收。基本设计可用于传感器阵列中的元件，其提供单元件传感器的所有特征，用于在高频和多频带频率下的聚焦以及可能的脉冲超声波束的方向。制造技术可以涉及陶瓷膜的流延，用厚膜印刷，溶胶 - 凝胶或其他沉积技术将陶瓷膜沉积到基底上，其中描述了负载匹配层和复合陶瓷层的制造方法。

4. 发明授权

US06485423B2 Correction of phasefront aberrations and pulse reverberations in medical ultrasound imaging 有权
标题翻译：医学超声成像中校正相位像差和脉冲混响
公开(公告)号：US06485423B2
公开(公告)日：2002-11-26
申请号：US09773335
申请日：2001-01-31
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： A61B814
CPC分类号： G01S15/8925 , A61B8/00 , A61B8/0833 , A61B8/481 , G01S7/52038 , G01S7/52049 , G01S7/5205
摘要： A method of correcting for phasefront aberrations in ultrasound imaging uses highly spaced apart point scatterers artificially placed in the tissue being imaged. The point scatterers reflect the transmitted sound and are individually differentiated to provide singular reference points for correction of signals reflected from the surrounding tissue. The differentiation is performed by comparison of the third or fourth harmonic frequencies of the reflected signals. To ensure the necessary high dispersal of the point scatterers, high amplitude pulses of the transmitted signal destroy point scatterers in selected image regions. In an alternate embodiment, correction is performed by stochastic analysis of signals reflected from the highly dispersed point scatterers. A reference signal is compared to the second harmonic of the reflected signal to reduce noise.
摘要翻译：用于校正超声成像中的相位像差的方法使用人为放置在被成像的组织中的高度间隔开的点散射体。点散射体反射发射的声音，并被单独区分，以提供用于校正从周围组织反射的信号的奇异参考点。通过比较反射信号的第三或第四谐波频率来进行微分。为了确保点散射体的必要的高散射，所传输的信号的高幅度脉冲在所选择的图像区域中破坏点散射体。在替代实施例中，通过对从高度分散的点散射体反射的信号进行随机分析来执行校正。将参考信号与反射信号的二次谐波进行比较，以减少噪声。

5. 发明授权

US06645150B2 Wide or multiple frequency band ultrasound transducer and transducer arrays 失效
标题翻译：宽或多频带超声波换能器和换能器阵列
公开(公告)号：US06645150B2
公开(公告)日：2003-11-11
申请号：US10041311
申请日：2002-01-07
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： A61B800
CPC分类号： B06B1/0614 , G10K11/02 , H04R17/00
摘要： Ultrasound bulk wave transducers and bulk wave transducer arrays for wide band or multi frequency band operation, in which the bulk wave is radiated from a front surface and the transducer is mounted on a backing material with sufficiently high absorption that reflected waves in the backing material can be neglected. The transducer is formed of layers that include a high impedance section comprised of at least one piezoelectric layer covered with electrodes to form an electric port, and at least one additional elastic layer, with all of the layers of the high impedance section having substantially the same characteristic impedance to yield negligible reflection between the layers. The transducer further includes a load matching section comprised of a set of elastic layers for impedance matching between the high impedance section and the load material and, optionally, impedance matching layers between the high impedance section and the backing material for shaping the transducer frequency response. For multiband operation, the high impedance section includes multiple piezoelectric layers covered with electrodes to form multiple electric ports that can further be combined by electric parallel, anti-parallel, serial, or anti-serial galvanic coupling to form electric ports with selected frequency transfer functions. Each electric port may be separately transceiver-connected to obtain parallel, anti-parallel, serial or anti-serial port coupling for multi-band transmission, and extremely wide-band reception.
摘要翻译：用于宽带或多频带操作的超声体波换能器和体波换能器阵列，其中体波从前表面辐射并且换能器安装在具有足够高吸收的背衬材料上，背衬材料中的反射波可以被忽视换能器由包括由至少一个被电极覆盖以形成电气端口的压电层组成的高阻抗部分的层形成，以及至少一个额外的弹性层，其中高阻抗部分的所有层具有基本相同的特征阻抗在层之间产生可忽略的反射。换能器还包括负载匹配部分，其包括用于高阻抗部分和负载材料之间的阻抗匹配的一组弹性层，以及可选地，高阻抗部分和背衬材料之间的阻抗匹配层，用于对换能器频率响应进行整形。对于多频段操作，高阻抗部分包括覆盖有电极的多个压电层，以形成多个电端口，其可以通过电并联，反并联，串联或反串联电耦合进一步组合以形成具有所选频率传递函数的电端口。每个电气端口可以单独收发器连接，以获得用于多频带传输的并行，反并联，串行或反串行端口耦合，以及极宽带接收。

6. 发明授权

US06540677B1 Ultrasound transceiver system for remote operation through a minimal number of connecting wires 有权
标题翻译：超声波收发器系统通过最少数量的连接线进行远程操作
公开(公告)号：US06540677B1
公开(公告)日：2003-04-01
申请号：US10000669
申请日：2001-11-15
申请人： Bjorn A. J. Angelsen , Tonni F. Johansen
发明人： Bjorn A. J. Angelsen , Tonni F. Johansen
IPC分类号： A61B800
CPC分类号： G01S7/5208 , B06B1/0215 , G01S7/52025 , G01S7/52079 , G01S15/8922
摘要： An advantageous combination of preamplifier electronics and circuits for acoustic beam forming with ultrasound transducer arrays permits integration of the electronics and transducer(s) at close distances in a compact arrangement and is operable from an ultrasound imaging or measurement system using only a minimal number of connecting electric wires. To achieve dynamic focusing of the receive beam with a transducer array, an integrated electronic circuit mounted in close proximity to the transducer array provides preamplifiers for the individual elements and delay circuits that are automatically switched in a predetermined time sequence after transmission of an imaging pulse. When a high voltage pulse is transmitted via the cable, a breakthrough circuit connects the cable to the transducer for transmission of the ultrasound pulse, while in receive mode the low level signal on the transducer is amplified and fed as a higher level signal via the same cable to the imaging or measurement instrument.
摘要翻译：用于具有超声换能器阵列的声束形成的前置放大器电子器件和电路的有利组合允许以紧凑的布置在近距离处集成电子器件和换能器，并且可以使用仅使用最少数量的连接的超声成像或测量系统电线。为了实现接收光束与换能器阵列的动态聚焦，安装在传感器阵列附近的集成电子电路为传输成像脉冲之后以预定时间顺序自动切换的各个元件和延迟电路提供前置放大器。当通过电缆传输高电压脉冲时，突破电路将电缆连接到换能器以传输超声脉冲，而在接收模式下，传感器上的低电平信号被放大并通过相同的方式作为较高电平信号馈送电缆到成像或测量仪器。

7. 发明授权

US08063540B2 High frequency ultrasound transducers based on ceramic films 有权
标题翻译：基于陶瓷膜的高频超声换能器
公开(公告)号：US08063540B2
公开(公告)日：2011-11-22
申请号：US11074990
申请日：2005-03-08
申请人： Bjørn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
发明人： Bjørn A. J. Angelsen , Tonni F. Johansen , Helge Kristiansen
IPC分类号： H04R17/00
CPC分类号： B06B1/0692 , H01L2224/16225 , H01L2224/48091 , H01L2224/73253 , H01L2224/73265 , H01L2924/00014
摘要： A design and a manufacturing method of ultrasound transducers based on films of ferro-electric ceramic material is presented, the transducers being particularly useful for operating at frequencies above 10 MHz. The manufacturing technique can involve tape-casting of the ceramic films, deposition of the ceramic films onto a substrate with thick film printing, sol-gel, or other deposition techniques, where manufacturing methods for load matching layers and composite ceramic layers are described. The designs also involve acoustic load matching layers that provide particularly wide bandwidth of the transducers, and also multi-band operation of the transducers. The basic designs can be used for elements in a transducer array, that provides the frequency characteristics of the single element transducers, for array steering of the focus and possibly also direction of a pulsed ultrasound beam at high frequencies and multi-band frequencies.
摘要翻译：提出了一种基于铁电陶瓷材料薄膜的超声换能器的设计和制造方法，该换能器对于在10MHz以上的频率下工作特别有用。制造技术可以涉及陶瓷膜的流延，用厚膜印刷，溶胶 - 凝胶或其他沉积技术将陶瓷膜沉积到基底上，其中描述了负载匹配层和复合陶瓷层的制造方法。这些设计还涉及提供特别宽的传感器带宽的声学负载匹配层，以及换能器的多频带操作。基本设计可用于传感器阵列中的元件，其提供单个元件换能器的频率特性，用于在高频和多频带频率下的聚焦的阵列转向以及可能的脉冲超声波束的方向。

8. 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。

9. 发明授权

US06780153B2 Mechanism and system for 3-dimensional scanning of an ultrasound beam 失效
标题翻译：超声波束三维扫描的机理与系统
公开(公告)号：US06780153B2
公开(公告)日：2004-08-24
申请号：US10179160
申请日：2002-06-24
申请人： Bjørn A. J. Angelsen , Tonni F. Johansen , Stig B. Kjøde
发明人： Bjørn A. J. Angelsen , Tonni F. Johansen , Stig B. Kjøde
IPC分类号： A61B800
CPC分类号： G01S15/8936 , A61B8/00 , A61B8/4461 , A61B8/483 , G01S15/8993
摘要： An ultrasound probe capable of scanning an ultrasound beam in a region of 3D space, characterized by that an ultrasound transducer array is mounted to a 1st shaft that can rotate in bearings mounted in a fork that can be moved. The fork can be rotated around a 2nd shaft in a bearing, or moved through a sliding system, or a combination of the two. The shaft and the fork are connected to two separate electric motors for electric steering of the array direction within a region of 3D space. Position measurement systems are mounted to the shaft and the fork so that the beam direction can be steered with a feed-back control system.
摘要翻译：一种能够在3D空间区域扫描超声波束的超声波探头，其特征在于，超声波换能器阵列安装在可安装在可以移动的叉子中的轴承中旋转的第一轴上。叉子可以在轴承中围绕第二轴旋转，或者通过滑动系统或两者的组合旋转。轴和叉子连接到两个单独的电动机，用于在3D空间的区域内的阵列方向的电动转向。位置测量系统安装到轴和叉子上，使得梁的方向可以用反馈控制系统转向。

10. 发明授权

US08157739B2 Ultrasound imaging with synthetic receive aperture and wide aperture, focused transmit beam 有权
标题翻译：超声成像与合成接收孔径和宽孔径，聚焦发射束
公开(公告)号：US08157739B2
公开(公告)日：2012-04-17
申请号：US10932871
申请日：2004-09-02
申请人： Bjørn A. J. Angelsen , Tonni F. Johansen
发明人： Bjørn A. J. Angelsen , Tonni F. Johansen
IPC分类号： A61B8/00 , A61B8/14
CPC分类号： A61B8/12 , A61B8/4488 , G01S7/5208 , G01S15/8922 , G01S15/8997
摘要： A method and an instrument for ultrasound imaging using an array of transducer elements which is connected to the instrument with a limited number of wires, where focusing of the transmit beam improves image signal to noise ratio above state of the art methods. This allows the use of higher ultrasound frequencies providing improved image resolution.
摘要翻译：一种用于超声成像的方法和仪器，其使用与有限数量的导线连接到仪器的换能器元件阵列，其中发射束的聚焦提高了现有技术方法的图像信噪比。这允许使用更高的超声频率来提供改进的图像分辨率。

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