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公开(公告)号：US5957852A
公开(公告)日：1999-09-28
申请号：US089463
申请日：1998-06-02
CPC分类号： G01S15/895 , G01S7/52026 , G01S7/52038 , G01S7/52046
摘要： The system described ultrasonically images a target with energy spreading transmissions. Generally, ultrasonic energy corresponding to a line focus is transmitted into a target at a fundamental center frequency. The target may or may not include contrast agents. In either case, echoes are received at a harmonic of the fundamental center frequency. Echoes are also received at the fundamental center frequency. The echoes received at the harmonic center frequency are efficiently compounding with the echoes received at the fundamental center frequency.
摘要翻译： 所描述的系统用能量扩散传播超声地对目标进行成像。 通常，对应于线焦点的超声能量以基本中心频率发送到目标。 靶标可能包含也可能不包括造影剂。 在任一种情况下，以基波中心频率的谐波接收回波。 回波也被接收在基本的中心频率。 在谐波中心频率处接收到的回波与基波中心频率处接收的回波有效地混合。
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公开(公告)号：US5573001A
公开(公告)日：1996-11-12
申请号：US524993
申请日：1995-09-08
CPC分类号： G01S15/8927 , G01S7/52026 , G01S7/52046 , G10K11/345 , G10K11/346 , G01S15/8915 , G01S15/8993 , G01S15/8995 , G01S7/52028
摘要： An ultrasonic receive beamformer includes transducers forming receive signals that are applied to sub-array processors. Each sub-array processor includes at least one phase shifter and a summer, and each phase shifter is responsive to at least one of the transducer signals to shift the transducer signal by a respective phase angle and to apply the phase shifted transducer signals to the summer. Each of the summers supplies a summed sub-array signal to a respective beamformer processor. The phase angles for any one of the sub-array processors form a sum substantially equal to zero. Furthermore, the phase angles for any one of the sub-array processors are independent of the time delay of the respective digital beamformer processor. The time resolution of the time delay of the digital beamformer processors is substantially as fine as the time resolution of the phase angles of the phase shifters. The phase angles of the phase shifters are updated at a slower rate than the focusing update rate of the beamformer processors. Quadrature filter network and heterodyning circuit implementations of the phase shifters are disclosed.
摘要翻译： 超声波接收波束形成器包括形成应用于子阵列处理器的接收信号的换能器。 每个子阵列处理器包括至少一个移相器和加法器，并且每个移相器响应于至少一个换能器信号以将换能器信号移位各自的相位角，并将相移的换能器信号施加到夏季 。 每个加法器将相加的子阵列信号提供给相应的波束形成器处理器。 任何一个子阵列处理器的相位角形成基本上等于零的和。 此外，任何一个子阵列处理器的相位角独立于相应的数字波束形成处理器的时间延迟。 数字波束形成处理器的时间延迟的时间分辨率基本上与移相器的相位角的时间分辨率一样好。 移相器的相位角以比波束形成处理器的聚焦更新速率更慢的速度进行更新。 公开了移相器的正交滤波器网络和外差电路实现。
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3.发明授权Method and apparatus for real-time, concurrent adaptive focusing in an ultrasound beamformer imaging system 失效用于超声波波束形成成像系统中的实时并发自适应聚焦的方法和装置
公开(公告)号：US5570691A
公开(公告)日：1996-11-05
申请号：US286528
申请日：1994-08-05
申请人： J. Nelson Wright , Samuel H. Maslak , Donald R. Langdon , Gregory L. Holley , Christopher R. Cole
发明人： J. Nelson Wright , Samuel H. Maslak , Donald R. Langdon , Gregory L. Holley , Christopher R. Cole
CPC分类号： G10K11/346 , G01S15/8927 , G01S7/52049 , G01S7/5209 , G01S7/52095 , G01S15/8918 , G01S15/8977 , G01S15/8979
摘要： A method and an apparatus are provided for dynamic, real-time adaptive focusing for ultrasound imaging. Aberration delay correction values, corresponding to an aberration region in an imaged subject, are measured concurrently during B-mode imaging scan lines and updated at the scan line rate. The measured aberration delay correction values are then applied concurrently to correct the focus of all transmitted and received ultrasound scan lines, regardless of the imaging mode, scan geometry, or imaging frequencies.
摘要翻译： 提供了用于超声成像的动态，实时自适应聚焦的方法和装置。 在B模式成像扫描线中同时测量与成像对象中的像差区域对应的像差延迟校正值，并以扫描线速率更新。 然后测量的像差延迟校正值同时被施加以校正所有发射和接收的超声波扫描线的焦点，而与成像模式，扫描几何形状或成像频率无关。
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公开(公告)号：US5676147A
公开(公告)日：1997-10-14
申请号：US698976
申请日：1996-08-16
CPC分类号： G01S15/8927 , G01S7/52026 , G01S7/52046 , G10K11/345 , G10K11/346 , G01S15/8915 , G01S15/8993 , G01S15/8995 , G01S7/52028
摘要： An ultrasonic receive beamformer includes transducers forming receive signals that are applied to sub-array processors. Each sub-array processor includes at least one phase shifter and a summer, and each phase shifter is responsive to at least one of the transducer signals to shift the transducer signal by a respective phase angle and to apply the phase shifted transducer signals to the summer. Each of the summers supplies a summed sub-array signal to a respective beamformer processor. The phase angles for any one of the sub-array processors form a sum substantially equal to zero. Furthermore, the phase angles for any one of the sub-array processors are independent of the time delay of the respective digital beamformer processor. The time resolution of the time delay of the digital beamformer processors is substantially as fine as the time resolution of the phase angles of the phase shifters. The phase angles of the phase shifters are updated at a slower rate than the focusing update rate of the beamformer processors. Quadrature filter network and heterodyning circuit implementations of the phase shifters are disclosed.
摘要翻译： 超声波接收波束形成器包括形成应用于子阵列处理器的接收信号的换能器。 每个子阵列处理器包括至少一个移相器和加法器，并且每个移相器响应于至少一个换能器信号以将换能器信号移位各自的相位角，并将相移的换能器信号施加到夏季 。 每个加法器将相加的子阵列信号提供给相应的波束形成器处理器。 任何一个子阵列处理器的相位角形成基本上等于零的和。 此外，任何一个子阵列处理器的相位角独立于相应的数字波束形成处理器的时间延迟。 数字波束形成处理器的时间延迟的时间分辨率基本上与移相器的相位角的时间分辨率一样好。 移相器的相位角以比波束形成处理器的聚焦更新速率更慢的速度进行更新。 公开了移相器的正交滤波器网络和外差电路实现。
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公开(公告)号：US5555534A
公开(公告)日：1996-09-10
申请号：US433916
申请日：1995-05-02
CPC分类号： G01S15/8979 , G01S15/8927
摘要： An ultrasonic receive system includes two receive beamformers. A first receive beamformer is optimized for imaging modes such as B-mode and color Doppler flow imaging, and therefore has high spatial resolution and wide bandwidth, while the accompanying second receive beamformer has a wide dynamic range and is dedicated for use in acquiring spectral Doppler information, which is typically narrowband compared to imaging information. The second receive beamformer achieves the sensitivity and low-noise performance of a dedicated single-channel pencil probe instrument yet it also performs electronic beam steering. Both receive beamformers can operate through a common transducer array, thereby increasing exam efficiency and permitting registration of spectral Doppler information with a B-mode or color Doppler flow image.
摘要翻译： 超声波接收系统包括两个接收波束形成器。 第一个接收波束形成器针对诸如B模式和彩色多普勒成像的成像模式进行了优化，因此具有高空间分辨率和宽带宽，而伴随的第二个接收波束形成器具有宽动态范围，专用于获取频谱多普勒 信息，与成像信息相比通常是窄带的。 第二个接收波束形成器实现了专用的单通道铅笔探针仪的灵敏度和低噪声性能，但它也执行电子束转向。 两个接收波束形成器都可以通过公共的换能器阵列进行操作，从而提高检查效率并允许使用B模式或彩色多普勒流图像对频谱多普勒信息进行注册。
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6.发明授权
公开(公告)号：US5549111A
公开(公告)日：1996-08-27
申请号：US432868
申请日：1995-05-02
CPC分类号： G01S15/895 , G01S13/89 , G01S15/8918 , G01S15/8979 , G01S7/5206 , G01S7/52071
摘要： Method for scanning a field of view using a scan format, wherein the carrier frequency of the imaging pulse is higher in the center of the field of view than at the edges. The frequency variation can be accomplished on transmit by modulating appropriately delayed programmable initial waveform information samples with a programmable carrier frequency. This results in a pulse transmitted into the body whose frequency is highest in the center portion of the scan, and is reduced in a controlled fashion as the steering angle is increased in order to mitigate grating lobe artifacts. The technique preserves signal energy because modulation merely translates the signal in frequency substantially without modification of the pulse shape itself. The technique is also useful on receive, wherein demodulation to or near baseband followed by post-beamformation pre-detection remodulation can correct for systematic scan-line-to-scan-line phase variations to ensure scan-line-to-scan-line phase coherency for subsequent coherent processing across scan lines or for coherent image formation using the phase and amplitude information from multiple beams.
摘要翻译： 使用扫描格式扫描视野的方法，其中成像脉冲的载波频率在视野的中心高于边缘的中心。 频率变化可以通过调制具有可编程载波频率的适当延迟的可编程初始波形信息采样来实现。 这导致脉冲发射到身体中，其频率在扫描的中心部分中的频率最高，并且随着转向角度增加而以受控的方式减小，以便减轻光栅叶片伪像。 该技术保留信号能量，因为调制仅基本上平移信号的频率，而不改变脉冲形状本身。 该技术对于接收也是有用的，其中对基带之后或接近基带的解调预发射后预检测再调制可以校正系统扫描线到扫描线相位变化，以确保扫描线到扫描线相位 使用来自多个波束的相位和幅度信息的扫描线之间的连续相干处理或相干图像形成的一致性。
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7.发明授权公开(公告)号：US06436046B1
公开(公告)日：2002-08-20
申请号：US09698995
申请日：2000-10-27
申请人： David J. Napolitano , Christopher R. Cole , Gregory L. Holley , John A. Hossack , Charles E. Bradley , Patrick Phillips
发明人： David J. Napolitano , Christopher R. Cole , Gregory L. Holley , John A. Hossack , Charles E. Bradley , Patrick Phillips
IPC分类号： A61B800
CPC分类号： G01S15/8963 , A61B8/00 , G01S7/52039 , G01S7/52046 , G01S7/52085 , G01S7/52095 , G01S15/8927 , G01S15/8959 , G01S15/8977
摘要： A medical diagnostic ultrasonic imaging system acquires receive beams from spatially distinct transmit beams. The receive beams alternate in type between at least first and second types across the region being imaged. The first and second types of receive beams differ in at least one scan parameter other than transmit and receive line geometry, and can for example differ in transmit phase, transmit or receive aperture, system frequency, transmit focus, complex phase angle, transmit code or transmit gain. Receive beams associated with spatially distinct ones of the transmit beams (including at least one beam of the first type and at least one beam of the second type) are then combined. In this way, many two-pulse techniques, including, for example, phase inversion techniques, synthetic aperture techniques, synthetic frequency techniques, and synthetic focus techniques, can be used while substantially reducing the frame rate penalty normally associated with such techniques.
摘要翻译： 医疗诊断超声成像系统从空间上不同的发射波束获取接收波束。 接收波束在被成像的区域之间在至少第一和第二类型之间交替类型。 第一和第二类型的接收波束在除发射和接收线几何之外的至少一个扫描参数不同，并且例如可以在发射相位，发射或接收孔径，系统频率，发射焦点，复相位角，发射码或 传输增益。 然后组合与空间上不同的发射波束（包括第一类型的至少一个波束和第二类型的至少一个波束）相关联的接收波束。 以这种方式，可以使用许多双脉冲技术，包括例如相位反转技术，合成孔径技术，合成频率技术和合成焦点技术，同时显着降低通常与这种技术相关联的帧速率损失。
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公开(公告)号：US5933389A
公开(公告)日：1999-08-03
申请号：US926270
申请日：1997-09-05
IPC分类号： G01N29/24 , G01N29/26 , G01N29/34 , G01N29/40 , G01N29/42 , G01N29/46 , G01S7/52 , G01S15/89 , G10K11/34 , H04B1/02
CPC分类号： G01N29/343 , G01N29/2456 , G01N29/2462 , G01N29/262 , G01N29/348 , G01N29/40 , G01N29/42 , G01N29/46 , G01S15/8909 , G01S15/895 , G01S7/52034 , G01S7/52036 , G01S7/52038 , G01S7/52039 , G01S7/52046 , G01S7/52047 , G10K11/341 , G10K11/343 , G01N2291/012 , G01N2291/015 , G01N2291/106
摘要： A transmit beamformer includes multiple transducers, each responsive to a respective transmit waveform to produce a respective transducer waveform. A transmit waveform generator generates the transmit waveforms, and the transmit waveforms each include multiple frequency components. Progressively higher frequency components of the transmit waveforms are timed to cause corresponding progressively higher frequency components of the transducer waveforms to focus along a line at progressively shorter ranges. In this way, a frequency dependent line focus is achieved.
摘要翻译： 发射波束形成器包括多个换能器，每个换能器响应相应的发射波形以产生相应的换能器波形。 发送波形发生器产生发送波形，并且发送波形各自包括多个频率分量。 发射波形的逐渐更高的频率分量被定时，以使得相应的逐渐更高的频率分量的换能器波形在逐渐更短的范围内沿着一条线聚焦。 以这种方式，实现了频率相关的线焦点。
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公开(公告)号：US5696737A
公开(公告)日：1997-12-09
申请号：US771345
申请日：1996-12-16
IPC分类号： G01N29/24 , G01N29/26 , G01N29/34 , G01N29/40 , G01N29/42 , G01N29/46 , G01S7/52 , G01S15/89 , G10K11/34 , H04B1/02
CPC分类号： G01N29/343 , G01N29/2456 , G01N29/2462 , G01N29/262 , G01N29/348 , G01N29/40 , G01N29/42 , G01N29/46 , G01S15/8909 , G01S15/895 , G01S7/52034 , G01S7/52036 , G01S7/52038 , G01S7/52039 , G01S7/52046 , G01S7/52047 , G10K11/341 , G10K11/343 , G01N2291/012 , G01N2291/015 , G01N2291/106
摘要： A transmit beamformer includes multiple transducers, each responsive to a respective transmit waveform to produce a respective transducer waveform. A transmit waveform generator generates the transmit waveforms, and the transmit waveforms each include multiple frequency components. Progressively higher frequency components of the transmit waveforms are timed to cause corresponding progressively higher frequency components of the transducer waveforms to focus along a line at progressively shorter ranges. In this way, a frequency dependent line focus is achieved.
摘要翻译： 发射波束形成器包括多个换能器，每个换能器响应相应的发射波形以产生相应的换能器波形。 发送波形发生器产生发送波形，并且发送波形各自包括多个频率分量。 发射波形的逐渐更高的频率分量被定时，以使得相应的逐渐更高的频率分量的换能器波形在逐渐更短的范围内沿着一条线聚焦。 以这种方式，实现了频率相关的线焦点。
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公开(公告)号：US07540842B2
公开(公告)日：2009-06-02
申请号：US10696421
申请日：2003-10-28
申请人： David J. Napolitano , Christopher R. Cole , Gregory L. Holley , John A. Hossack , Charles E. Bradley , Patrick Phillips
发明人： David J. Napolitano , Christopher R. Cole , Gregory L. Holley , John A. Hossack , Charles E. Bradley , Patrick Phillips
IPC分类号： A61B8/00
CPC分类号： G01S15/8963 , A61B8/00 , G01S7/52039 , G01S7/52046 , G01S7/52085 , G01S7/52095 , G01S15/8927 , G01S15/8959 , G01S15/8977
摘要： A medical diagnostic ultrasonic imaging system acquires receive beams from spatially distinct transmit beams. The receive beams alternate in type between at least first and second types across the region being imaged. The first and second types of receive beams differ in at least one scan parameter other than transmit and receive line geometry, and can for example differ in transmit phase, transmit or receive aperture, system frequency, transmit focus, complex phase angle, transmit code or transmit gain. Receive beams associated with spatially distinct ones of the transmit beams (including at least one beam of the first type and at least one beam of the second type) are then combined. In this way, many two-pulse techniques, including, for example, phase inversion techniques, synthetic aperture techniques, synthetic frequency techniques, and synthetic focus techniques, can be used while substantially reducing the frame rate penalty normally associated with such techniques.
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