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公开(公告)号：US07074186B2
公开(公告)日：2006-07-11
申请号：US10668915
申请日：2003-09-23
CPC分类号： G01S15/895 , G01S7/52026 , G01S7/52046
摘要： Transmit based axial whitening is provided. Ultrasonic waveforms to be transmitted are designed to provide for wideband imaging characteristics prior to detection. Rather than transmitting a waveform having a spectral magnitude as white or flat as possible, waveforms with adjusted spectral content, such as spectrally bi-modal waveforms are generated in order to compensate for subsequent effects. Prior to detection, a more wideband or whiter signal response is provided in response to the transmitted waveform. Any of various alterations of the transmit waveform, such as asymmetric, spectrally bi-modal or other characteristics in anticipation of a system transfer function or physical phenomena through which the signal passes electronically or acoustically to result in a wideband or white spectral magnitude and generally linear spectral phase is used. The transmit waveform is altered to improve the imaging characteristics of the downstream processing.
摘要翻译： 提供基于发射的轴向增白。 要发射的超声波形被设计成在检测之前提供宽带成像特性。 不会发送具有尽可能白色或平坦的光谱幅度的波形，而是产生具有调整的光谱含量（诸如光谱双模态波形）的波形，以便补偿随后的效果。 在检测之前，响应于传输的波形提供更宽带或更白的信号响应。 发射波形的各种改变中的任何一种，例如在预期系统传递函数或物理现象的情况下的不对称，光谱双模式或其他特性，信号通过该物理现象通过电子或声学通过以产生宽带或白色光谱幅度并且通常为线性 使用光谱相位。 改变发射波形以改善下游处理的成像特性。
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公开(公告)号：US20090306512A1
公开(公告)日：2009-12-10
申请号：US12477783
申请日：2009-06-03
IPC分类号： A61B8/14
CPC分类号： G01S7/52046 , G01S7/5202 , G01S7/5209 , G01S7/52095 , G10K11/346
摘要： Retrospective dynamic transmit beamformation is provided in medical ultrasound imaging. Using parallel receive beamformation, sets of data representing locations in at least a common field of view are obtained, each set in response to a transmit with a spatially distinct phase front. The common field of view receive data are time aligned and amplitude weighted for retrospective transmit focusing and retrospective transmit apodization, respectively. A time offset, such as of a cycle or more in some cases, is applied to the receive data for retrospective transmit focusing. The offset is selected to emulate shifting the transmit delay profile to be tangentially intersecting with the dynamic receive delay profile for each location which is the desired transmit delay profile. A weight is applied to the receive data for retrospective transmit apodization. The weight is selected based on the desired transmit apodization profile. The offset and weighted data representing a same location from different transmit events is coherently combined. The number of sets of data offset, weighted and combined may vary as a function of depth for dynamic transmit beamformation.
摘要翻译： 在医学超声成像中提供回溯动态发射波束形成。 使用并行接收波束形成，获得在至少公共视场中表示位置的数据集合，每个集合响应于具有空间上不同相位前沿的传输。 对于追溯发射聚焦和追溯发射变迹，共同视野接收数据分别对时间对齐和幅度加权。 在一些情况下，例如周期或更多的时间偏移被应用于用于追溯发射聚焦的接收数据。 选择该偏移以模拟将发射延迟分布移动为与期望的发射延迟分布的每个位置的动态接收延迟分布切线相交。 将加权应用于接收数据用于追溯发射变迹。 基于所需的发射变迹轮廓来选择权重。 表示来自不同发送事件的相同位置的偏移和加权数据被一致地组合。 数据偏移量，加权和组合的数量可以随动态传输波束形成的深度而变化。
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公开(公告)号：US08241216B2
公开(公告)日：2012-08-14
申请号：US12477783
申请日：2009-06-03
IPC分类号： A61B8/00
CPC分类号： G01S7/52046 , G01S7/5202 , G01S7/5209 , G01S7/52095 , G10K11/346
摘要： Retrospective dynamic transmit beamformation is provided in medical ultrasound imaging. Using parallel receive beamformation, sets of data representing locations in at least a common field of view are obtained, each set in response to a transmit with a spatially distinct phase front. The common field of view receive data are time aligned and amplitude weighted for retrospective transmit focusing and retrospective transmit apodization, respectively. A time offset, such as of a cycle or more in some cases, is applied to the receive data for retrospective transmit focusing. The offset is selected to emulate shifting the transmit delay profile to be tangentially intersecting with the dynamic receive delay profile for each location which is the desired transmit delay profile. A weight is applied to the receive data for retrospective transmit apodization. The weight is selected based on the desired transmit apodization profile. The offset and weighted data representing a same location from different transmit events is coherently combined. The number of sets of data offset, weighted and combined may vary as a function of depth for dynamic transmit beamformation.
摘要翻译： 在医学超声成像中提供回溯动态发射波束形成。 使用并行接收波束形成，获得在至少公共视场中表示位置的数据集合，每个集合响应于具有空间上不同相位前沿的传输。 对于追溯发射聚焦和追溯发射变迹，共同视野接收数据分别对时间对齐和幅度加权。 在一些情况下，例如周期或更多的时间偏移被应用于用于追溯发射聚焦的接收数据。 选择该偏移以模拟将发射延迟分布移动为与期望的发射延迟分布的每个位置的动态接收延迟分布切线相交。 将加权应用于接收数据用于追溯发射变迹。 基于所需的发射变迹轮廓来选择权重。 表示来自不同发送事件的相同位置的偏移和加权数据被一致地组合。 数据偏移量，加权和组合的数量可以随动态传输波束形成的深度而变化。
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公开(公告)号：US08690781B2
公开(公告)日：2014-04-08
申请号：US13538744
申请日：2012-06-29
IPC分类号： A61B8/00
CPC分类号： G01S7/52046 , G01S7/5202 , G01S7/5209 , G01S7/52095 , G10K11/346
摘要： Using parallel receive beamformation, sets of data representing locations in at least a common field of view are obtained, each set in response to a transmit with a spatially distinct phase front. The common field of view receive data are time aligned and amplitude weighted for retrospective transmit focusing and retrospective transmit apodization, respectively. A time offset is applied to the receive data for retrospective transmit focusing. The offset is selected to emulate shifting the transmit delay profile to be tangentially intersecting with the dynamic receive delay profile for each location which is the desired transmit delay profile. A weight is applied to the receive data for retrospective transmit apodization. The offset and weighted data representing a same location from different transmit events is coherently combined. The number of sets of data offset, weighted and combined may vary as a function of depth for dynamic transmit beamformation.
摘要翻译： 使用并行接收波束形成，获得在至少公共视场中表示位置的数据集合，每个集合响应于具有空间上不同相位前沿的传输。 对于追溯发射聚焦和追溯发射变迹，共同视野接收数据分别对时间对齐和幅度加权。 时间偏移被应用于用于追溯发射聚焦的接收数据。 选择该偏移以模拟将发射延迟分布移动为与期望的发射延迟分布的每个位置的动态接收延迟分布切线相交。 将加权应用于接收数据用于追溯发射变迹。 表示来自不同发送事件的相同位置的偏移和加权数据被一致地组合。 数据偏移量，加权和组合的数量可以随动态传输波束形成的深度而变化。
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公开(公告)号：US20120283568A1
公开(公告)日：2012-11-08
申请号：US13538744
申请日：2012-06-29
IPC分类号： A61B8/14
CPC分类号： G01S7/52046 , G01S7/5202 , G01S7/5209 , G01S7/52095 , G10K11/346
摘要： Using parallel receive beamformation, sets of data representing locations in at least a common field of view are obtained, each set in response to a transmit with a spatially distinct phase front. The common field of view receive data are time aligned and amplitude weighted for retrospective transmit focusing and retrospective transmit apodization, respectively. A time offset is applied to the receive data for retrospective transmit focusing. The offset is selected to emulate shifting the transmit delay profile to be tangentially intersecting with the dynamic receive delay profile for each location which is the desired transmit delay profile. A weight is applied to the receive data for retrospective transmit apodization. The offset and weighted data representing a same location from different transmit events is coherently combined. The number of sets of data offset, weighted and combined may vary as a function of depth for dynamic transmit beamformation.
摘要翻译： 使用并行接收波束形成，获得在至少公共视场中表示位置的数据集合，每个集合响应于具有空间上不同相位前沿的传输。 对于追溯发射聚焦和追溯发射变迹，共同视野接收数据分别对时间对齐和幅度加权。 时间偏移被应用于用于追溯发射聚焦的接收数据。 选择该偏移以模拟将发射延迟分布移动为与期望的发射延迟分布的每个位置的动态接收延迟分布切线相交。 将加权应用于接收数据用于追溯发射变迹。 表示来自不同发送事件的相同位置的偏移和加权数据被一致地组合。 数据偏移量，加权和组合的数量可以随动态传输波束形成的深度而变化。
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公开(公告)号：US07887487B2
公开(公告)日：2011-02-15
申请号：US11303622
申请日：2005-12-15
IPC分类号： A61B8/00
CPC分类号： A61B8/06 , A61B8/488 , G01S7/52038 , G01S15/8954 , G01S15/8959 , G01S15/8979
摘要： Diagnostic ultrasound flow imaging is performed with coded excitation pulses. Due to the use of frequency coded excitation pulses, flow information may suffer from spatial misregistration and estimate errors. Spatial position shift in flow data is offset for alignment with B-mode or other imaging. The flow estimates are compensated for the imaging center frequency variation with depth. The wide bandwidth information available due to coded excitation may allow anti-aliasing by estimating velocities from two frequency bands.
摘要翻译： 用编码的激发脉冲进行诊断超声波成像。 由于使用频率编码的激励脉冲，流量信息可能会受到空间重合失调和估计误差的困扰。 流量数据中的空间位置偏移偏移以与B模式或其他成像对齐。 影像中心频率随深度的变化而补偿流量估计值。 由于编码激励可用的宽带宽信息可以通过估计来自两个频带的速度来允许抗混叠。
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公开(公告)号：US07682311B2
公开(公告)日：2010-03-23
申请号：US11233550
申请日：2005-09-22
CPC分类号： G01S15/584 , G01S15/8979
摘要： Phase unwrapping is applied to velocity data to remove aliasing artifacts. Phase unwrapping is applied on multidimensional regions of velocity data. The unwrapped velocity image is displayed. The displayed image may have high sensitivity to slow motion but may also avoid aliasing of fast motion despite being undersampled.
摘要翻译： 相位展开应用于速度数据以消除混叠伪像。 相位展开应用于速度数据的多维区域。 显示展开的速度图像。 显示的图像可能对慢动作具有高灵敏度，但也可以避免快速运动的混叠，尽管被欠采样。
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公开(公告)号：US20100022884A1
公开(公告)日：2010-01-28
申请号：US12180775
申请日：2008-07-28
IPC分类号： A61B8/00
CPC分类号： A61B8/06 , A61B8/08 , A61B8/13 , A61B8/461 , A61B8/488 , G01S7/52066 , G01S7/52071 , G01S7/52095 , G01S15/8979
摘要： Spatially distinct Spectral Doppler information is displayed. A spectrum is determined for each of a plurality of spatial locations, such as associated with different receive beams. Given a plurality of spectra at different spatial locations, an image may be generated as a function of the spectra. For example, a two-dimensional image has display values for different pixels or locations derived from one or more characteristics of the spectra, such as the maximum velocity with energy above a threshold for each location. As another example, the spectrum from the set of spectra with the highest maximum velocity is selected for generating a spectral strip display.
摘要翻译： 显示空间不同的光谱多普勒信息。 确定多个空间位置中的每一个的频谱，例如与不同的接收波束相关联。 给定不同空间位置处的多个光谱，可以根据光谱产生图像。 例如，二维图像具有针对从光谱的一个或多个特征导出的不同像素或位置的显示值，例如具有高于每个位置的阈值的能量的最大速度。 作为另一示例，选择具有最高最大速度的光谱集合的光谱以产生光谱条显示。
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公开(公告)号：US07207942B2
公开(公告)日：2007-04-24
申请号：US10627290
申请日：2003-07-25
申请人： Kutay F. Ustuner , Albert Gee
发明人： Kutay F. Ustuner , Albert Gee
IPC分类号： A61B8/00
CPC分类号： A61B8/5269 , G01S7/52047 , G10K11/346
摘要： Adaptive grating lobe suppression is provided. Received ultrasound data is measured, compared or otherwise processed to determine the presence of grating lobe energy. A further process is then altered as a function of the level of grating lobe energy. In one embodiment, the adaptive grating lobe suppression is implemented in the receive beamformer. Data representing a virtual element is formed as a normalized sum of data from adjacent sparse elements. The data from the adjacent elements is correlated to determine the presence of grating lobe energy as a function of the amount of shift associated with the peak correlation. A phase shift is applied to the data representing the virtual element where sufficient grating lobe energy is determined. In another embodiment, an amount of grating lobe energy is measured by comparing data from prior to a filter with filtered data. The filter is selected to isolate main lobe energy from grating lobe energy. A gain is modulated as a function of any detected grating lobe energy or filtered or unfiltered data is selected for further processing.
摘要翻译： 提供自适应栅瓣抑制。 接收的超声数据被测量，比较或以其他方式处理以确定光栅叶片能量的存在。 然后，另外的过程作为光栅能量的函数而改变。 在一个实施例中，在接收波束形成器中实现自适应光栅波瓣抑制。 表示虚拟元素的数据形成为来自相邻稀疏元素的归一化数据和。 来自相邻元件的数据相关，以确定作为与峰值相关性相关的偏移量的函数的光栅波瓣能量的存在。 对表示确定了足够的光栅能量的虚拟元件的数据应用相移。 在另一个实施例中，通过比较来自滤波器之前的滤波数据的滤波数据来测量光栅叶片能量的量。 选择滤波器以将主波瓣能量与光栅波能分离。 根据任何检测到的光栅波长能量调制增益，或者选择滤波或未滤波的数据进行进一步处理。
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公开(公告)号：US06858008B2
公开(公告)日：2005-02-22
申请号：US10080367
申请日：2002-02-20
申请人： Andrew Li , Kutay F. Ustuner
发明人： Andrew Li , Kutay F. Ustuner
CPC分类号： G01S7/52096 , G01S7/52046
摘要： Methods and systems for automatic adjustment of the transmit power are provided. Excess transmit power is determined as a function of the difference between a noise level and the lower end of the dynamic range of the system as configured. Based on the excess transmit power, the transmit power is reduced from the regulated maximum default settings to about a minimum while substantially preserving the original display image. This minimizes the acoustic energy delivered to the transducer and the body, thus reducing transducer heating and satisfying the FDA's ALARA principle.
摘要翻译： 提供了自动调整发射功率的方法和系统。 根据配置的系统的动态范围的噪声水平和下限之间的差异确定过多的发射功率。 基于超量发射功率，发射功率从稳定的最大默认设置减小到大约最小值，同时基本上保留原始显示图像。 这最大限度地减少了传递给换能器和身体的声能，从而减少换能器加热并满足FDA的ALARA原理。
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