Solving for shear wave information in medical ultrasound imaging
    2.
    发明授权
    Solving for shear wave information in medical ultrasound imaging 有权
    解决医学超声成像中的剪切波信息

    公开(公告)号:US08961418B2

    公开(公告)日:2015-02-24

    申请号:US12898957

    申请日:2010-10-06

    申请人: Liexiang Fan

    发明人: Liexiang Fan

    摘要: A shear wave velocity solution is provided for medical ultrasound imaging. Rather than determining shear wave information for each location based on distance from the origin of the shear wave and time to peak displacement for the location, displacement profiles resulting from different combinations of origin and detection locations are correlated. Shear information is detected using displacements from a diverse spatial combination of transmission locations and detection locations. The correlation combination is used in a same function for simultaneously solving for the delays for multiple lateral locations. Spatial diversity and layered correlation may provide for more accurate shear wave estimation.

    摘要翻译: 提供用于医学超声成像的剪切波速度解决方案。 与根据距离原始的剪切波的距离以及位置的时间到峰值位移的距离确定每个位置的剪切波信息而不是根据不同原点和检测位置的组合产生的位移曲线相关。 使用来自传输位置和检测位置的不同空间组合的位移来检测剪切信息。 相关组合用于相同的功能,用于同时求解多个横向位置的延迟。 空间分集和分层相关可以提供更准确的剪切波估计。

    Ultrasound Enhanced Magnetic Resonance Imaging
    3.
    发明申请
    Ultrasound Enhanced Magnetic Resonance Imaging 审中-公开
    超声增强磁共​​振成像

    公开(公告)号:US20130345545A1

    公开(公告)日:2013-12-26

    申请号:US13529746

    申请日:2012-06-21

    IPC分类号: A61B8/13 A61B5/055

    CPC分类号: A61B5/055

    摘要: Magnetic resonance imaging frame rate is increased using ultrasound information. Magnetic resonance (MR) images may be provided at an increased frame rate relative to the MR acquisition. For times between acquisition of MR data, MR data may be created. To account for any change in position of tissue over time, ultrasound is used to track the location of tissue or other imaged structure. The ultrasound-based location information is used to indicate the position of intensities or values of the created MR data. MR images at a higher frame rate than the MR acquisition are generated, but with accuracy of relative position based on the ultrasound data.

    摘要翻译: 使用超声信息增加磁共振成像帧率。 可以以相对于MR采集的增加的帧速率提供磁共振(MR)图像。 对于获取MR数据之间的时间,可能会创建MR数据。 为了考虑组织随时间的位置的任何变化,使用超声波来跟踪组织或其他成像结构的位置。 基于超声的位置信息用于指示所创建的MR数据的强度或值的位置。 产生比MR获取更高的帧速率的MR图像,但是基于超声数据的相对位置的精度。

    Viscoelasticity measurement using amplitude-phase modulated ultrasound wave
    5.
    发明授权
    Viscoelasticity measurement using amplitude-phase modulated ultrasound wave 有权
    使用振幅相位调制超声波的粘弹性测量

    公开(公告)号:US08469891B2

    公开(公告)日:2013-06-25

    申请号:US13029369

    申请日:2011-02-17

    IPC分类号: A61B8/00 G01N11/10 G01N29/00

    摘要: A viscoelastic property of tissue is measured in vivo. To collect more information and/or estimate viscosity, shear modulus, and/or other shear characteristics, an amplitude and phase modulated waveform is transmitted to the tissue. The displacement caused by the waveform over time includes displacements associated with response to different frequencies. By examining the displacement in the frequency domain, one or more viscoelastic properties may be calculated for different frequencies. The frequency response may indicate the health of the tissue.

    摘要翻译: 在体内测量组织的粘弹性。 为了收集更多信息和/或估计粘度,剪切模量和/或其他剪切特性,幅度和相位调制波形被传送到组织。 由波形随时间引起的位移包括与响应于不同频率相关联的位移。 通过检查频域中的位移,可以针对不同的频率计算一个或多个粘弹性质。 频率响应可能表示组织的健康。

    HIGH PULSE REPETITION FREQUENCY FOR DETECTION OF TISSUE MECHANICAL PROPERTY WITH ULTRASOUND
    6.
    发明申请
    HIGH PULSE REPETITION FREQUENCY FOR DETECTION OF TISSUE MECHANICAL PROPERTY WITH ULTRASOUND 有权
    用于检测超声波组织机械性能的高脉冲重复频率

    公开(公告)号:US20100286516A1

    公开(公告)日:2010-11-11

    申请号:US12240044

    申请日:2008-09-29

    IPC分类号: A61B8/00

    摘要: Detection of tissue response is provided with a high pulse repetition frequency. A sequence of separable signals is transmitted in one event. For example, pulses at different frequencies are transmitted as separate waveforms, but in rapid succession. As another example, coded transmit pulses are used. After transmission of the pulses, signals are received. Based on the different frequencies or coding, tissue response is measured at different times based on the receive event. Instead of one measure, a plurality of measures are provided for a given transmit and receive event pair, increasing the effective pulse repetition frequency for shear or elasticity imaging.

    摘要翻译: 组织反应的检测具有高脉冲重复频率。 在一个事件中发送可分离信号的序列。 例如,不同频率的脉冲作为单独的波形传输,但是以快速连续的方式传输。 作为另一示例,使用编码的发送脉冲。 在发送脉冲之后,接收信号。 基于不同的频率或编码,基于接收事件在不同时间测量组织响应。 代替一种措施,为给定的发射和接收事件对提供多个测量,增加用于剪切或弹性成像的有效脉冲重复频率。

    Cross reference measurement for diagnostic medical imaging
    7.
    发明授权
    Cross reference measurement for diagnostic medical imaging 有权
    诊断医学成像的交叉参考测量

    公开(公告)号:US07817835B2

    公开(公告)日:2010-10-19

    申请号:US11728686

    申请日:2007-03-26

    IPC分类号: G06K9/00 A61B8/00

    摘要: Measurements in diagnostic medical imaging are cross-referenced. A measurement made for one type of data is reflected in an image for another type of data. For example, a length is measured from ultrasound data. A line associated with the length is displayed on the ultrasound image. In a magnetic resonance image (MRI), the same line is displayed at a corresponding location. The same measurement may also be made with the MRI data and reflected in the ultrasound image. Each image shows both measurements in this example. The difference in the same measurements from different types of data may be useful for diagnosis. In the above example, the length is measured from ultrasound and from MRI. The difference between the two measured lengths may provide diagnostically useful information.

    摘要翻译: 诊断医学成像中的测量是相互参照的。 对于一种类型的数据进行的测量反映在用于另一类型的数据的图像中。 例如,从超声数据测量长度。 在超声图像上显示与长度相关联的线。 在磁共振图像(MRI)中,在相应的位置显示相同的线。 也可以用MRI数据进行相同的测量并反映在超声图像中。 在此示例中,每个图像显示两个测量。 来自不同类型数据的相同测量值的差异可能对诊断有用。 在上述示例中,长度是从超声波和MRI测量的。 两个测量长度之间的差异可以提供诊断上有用的信息。

    Tissue complex modulus and/or viscosity ultrasound imaging
    8.
    发明申请
    Tissue complex modulus and/or viscosity ultrasound imaging 有权
    组织复数模量和/或粘度超声成像

    公开(公告)号:US20090005682A1

    公开(公告)日:2009-01-01

    申请号:US11824388

    申请日:2007-06-28

    IPC分类号: A61B8/08 G06F19/00

    CPC分类号: A61B8/08 A61B8/485

    摘要: Complex response of tissue is calculated as function of a convolution relationship associated with measured strain with applied stress. In the Fourier or frequency domain, the convolution is a simple algebraic computation, such as multiplication. The complex response provides elasticity and viscosity information, assisting diagnosis. Complex compliance may be directly calculated from the strain and stress. Complex fluidity may be directly calculated from strain rate and stress.

    摘要翻译: 计算组织的复杂响应作为与所施加的应力的测量应变相关联的卷积关系的函数。 在傅立叶或频域中,卷积是一个简单的代数计算,如乘法。 复杂的反应提供弹性和粘度信息,辅助诊断。 复杂的顺应性可以从应变和应力直接计算。 复杂流动性可以从应变率和应力直接计算。

    Medical ultrasound pressure gradient measurement
    9.
    发明申请
    Medical ultrasound pressure gradient measurement 有权
    医学超声压力梯度测量

    公开(公告)号:US20070016037A1

    公开(公告)日:2007-01-18

    申请号:US11147098

    申请日:2005-06-06

    IPC分类号: A61B8/00

    CPC分类号: A61B8/06

    摘要: Flow information (e.g., velocity and acceleration) and/or pressure gradient information are determined with ultrasound. Both velocity and acceleration are simultaneously estimated using a model and least squares analysis. Anti-aliasing of velocity information may be provided using the model and least squares analysis. Pressure gradient is calculated from velocity information automatically, more likely providing consistent measurements. Consistency may be increased further by automatically positioning a region of interest in either a multidimensional spatial image or a spatial-temporal image. A parametric image of pressure gradient for each spatial location within the image is generated as well as a delta pressure curve. Any single one or combinations of two or more of the features described above may be used.

    摘要翻译: 用超声波确定流量信息(例如,速度和加速度)和/或压力梯度信息。 同时使用模型和最小二乘法分析速度和加速度。 可以使用模型和最小二乘法分析来提供速度信息的抗锯齿。 压力梯度由速度信息自动计算,更可能提供一致的测量。 通过将感兴趣区域自动定位在多维空间图像或空间 - 时间图像中,可以进一步增加一致性。 产生图像内每个空间位置的压力梯度的参数图像以及三角洲压力曲线。 可以使用上述特征中的任何一个或两个或更多个特征的组合。

    Shear wave estimation from analytic data

    公开(公告)号:US10512450B2

    公开(公告)日:2019-12-24

    申请号:US14035860

    申请日:2013-09-24

    申请人: Liexiang Fan

    发明人: Liexiang Fan

    IPC分类号: A61B8/08 G01S7/52 G01S15/89

    摘要: Shear wave characteristics are estimated from analytic data. Measures of displacement are converted into complex representations. The magnitude and/or phase components of the complex representation may be used for estimating various characteristics, such as velocity, center frequency, attenuation, shear modulus, or shear viscosity. The zero-phase of the phase component represents an occurrence of the shear wave at that location.