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    • 3. 发明授权
    • Ultrasonic method using adaptive clutter filter to remove tissue wall motion
    • 超声波法采用自适应杂波滤波器去除组织壁运动
    • US06224557B1
    • 2001-05-01
    • US09497579
    • 2000-02-03
    • J Mark ZielKarl E Thiele
    • J Mark ZielKarl E Thiele
    • A61B800
    • G01S15/8981A61B8/06A61B8/13G01S7/52038
    • The method of the invention controls an ultrasound system that implements a clutter filter, to derive parameters such as blood flow velocity, echo power and/or echo amplitude data from an anatomical region of interest (ROI) and into which a contrast agent has been introduced. The method initially transmits an ensemble of N ultrasound beams along a common azimuth and elevation into the ROI to cause destruction of the contrast agent lying along the azimuth. Estimated wall motion velocity data is then derived for the tissue wall region through use of selected echo signal data derived from a subset of the N ultrasound beams of the ensemble, the subset excluding echo signal data from a first M of the N ultrasound beams or any subset of the N ultrasound beams. The clutter filter is then adjusted to attenuate selected echo signal data returned from the ROI that exhibits the wall motion velocity data. The wall motion data derived from the N ultrasound beams or a subset thereof is processed by the adjusted clutter filter to derive echo data that is better indicative of echo signal returns from the contrast agent or blood flow and is less indicative of wall motion effects.
    • 本发明的方法控制实现杂波滤波器的超声系统,从感兴趣的解剖区域(ROI)导出诸如血流速度,回波功率和/或回波幅度数据的参数,并且引入了造影剂 。 该方法首先将N个超声波束沿着共同的方位角和高度传播到ROI中,以引起沿着方位角的造影剂的破坏。 然后通过使用从该组合的N个超声波束的子集导出的所选择的回波信号数据,针对组织壁区域导出估计的壁运动速度数据,该子集不包括来自N个超声波束的第一个M的任何 N个超声波束的子集。 然后调整杂波滤波器以衰减从呈现壁运动速度数据的ROI返回的所选择的回波信号数据。 从N个超声波束或其子集导出的壁面运动数据由调整的杂波滤波器处理,以导出更好地指示来自造影剂或血流的回波信号返回的回波数据,并且较少表示壁运动效应。
    • 4. 发明授权
    • Ultrasonic flow measurement system employing cross-correlation of
baseband reflection data
    • 超声波流量测量系统采用基带反射数据的互相关
    • US5669386A
    • 1997-09-23
    • US692789
    • 1996-07-31
    • Karl E. ThieleRichard A. HagerDavid W. ClarkJerome F. Witt
    • Karl E. ThieleRichard A. HagerDavid W. ClarkJerome F. Witt
    • A61B8/06G01P5/22G01P5/24G01S7/531G01S15/89A61B8/00A61B8/12
    • G01S15/8979G01P5/22G01P5/244G01S7/52044
    • An ultrasound flow measurement system converts each of plural groups of reflection sample values from scatterers, into baseband complex data values and enables a velocity determination from just two lag samples. A cross correlation function derives a first cross-correlation value between a first set of complex data values that are derived at a first common sample time, during succeeding transmit events, and a second set of complex data values that are derived at a second common sample time, during succeeding transmit events. A second cross-correlation function derives a second cross-correlation value between the first set of complex data values and a third set of complex data values that are derived at the common second sample time. A local oscillator synchronizes both the baseband conversion and cross-correlation operation, and exhibits a rate of change of phase per sample time. A processor relates the rate of change of phase of the local oscillation signal, the first cross-correlation value and the second cross-correlation value to derive the velocity of the ultrasound scatterers. In particular, the first and second cross-correlation values enable establishment of a linear function defining the phase of the cross-correlation function of the complex data values. The rate of change of phase of the local oscillation signal enables establishment of a further linear function. The intersection of the two linear functions identifies the time at which a maxima occurs of the cross-correlation function, thereby enabling derivation of the velocity of the scatterers.
    • 超声波流量测量系统将来自散射体的多组反射样本值中的每一个转换为基带复合数据值,并且仅使用两个滞后样本的速度确定。 互相关函数导出在第一公共采样时间,后续发送事件期间导出的第一组复数据值和在第二公共样本中导出的第二组复数据值之间的第一互相关值 时间,在成功的传输事件。 第二互相关函数导出第一组复数据值之间的第二互相关值和在公共第二采样时间导出的第三组复数数据值。 本地振荡器同步基带转换和互相关操作,并且显示每个采样时间的相位变化率。 处理器涉及本地振荡信号的相位变化率,第一互相关值和第二互相关值,以导出超声波散射体的速度。 特别地,第一和第二互相关值使得能够建立定义复数数据值的互相关函数的相位的线性函数。 本地振荡信号的相位变化率使得能够建立进一步的线性函数。 两个线性函数的交点识别互相关函数发生最大值的时间,从而能够推导出散射体的速度。
    • 6. 发明授权
    • Method and apparatus for volume rendering using depth weighted colorization
    • 使用深度加权着色进行体绘制的方法和装置
    • US08477135B2
    • 2013-07-02
    • US12302946
    • 2007-05-29
    • Karl E. Thiele
    • Karl E. Thiele
    • G06T15/50G06T15/60G06T17/00G09G5/02
    • G06T15/06G06T15/08G06T15/40
    • A method of volume rendering includes obtaining data representative of a first composited plane of one or more anatomical structures and calculating data of a second composited plane as a function of a first composited plane. The data of the second composited plane is indicative of a measure of depth of the one or more anatomical structures along respective ray cast lines. The method also includes determining depth weighted color values between two different colorization palettes as a function of the measure of depths of the second composited plane. The determined depth weighted color values are applied to the first composited plane for producing a volume rendering image with depth weighted colorization.
    • 体绘制的方法包括获得代表一个或多个解剖结构的第一合成平面的数据,并且计算作为第一合成平面的函数的第二合成平面的数据。 第二合成平面的数据指示沿着相应的射线投射线的一个或多个解剖结构的深度的度量。 该方法还包括确定两个不同着色调色板之间的深度加权色值作为第二合成平面深度测量的函数。 将确定的深度加权颜色值应用于第一合成平面,以产生具有深度加权着色的体绘制图像。
    • 7. 发明申请
    • DUAL PATH PROCESSING FOR OPTIMAL SPECKLE TRACKING
    • 用于最佳追踪的双路加工
    • US20100004540A1
    • 2010-01-07
    • US12447969
    • 2007-11-02
    • Karl E. Thiele
    • Karl E. Thiele
    • A61B8/00
    • A61B8/08G01S7/52026G01S7/52071G01S7/52077G01S15/8979G01S15/8995
    • This invention relates generally to an improved system and method that combines enhancing and mitigating techniques for speckle tracking, for obtaining a series of images of the movement of a target, such as tissue, over time. The method comprises steps of transmitting sound waves into the human body and outputting echoes of these sound waves; receiving and beamforming the echoes to produce scan line data; processing scan line data to display anatomical information using a method which reduces speckle; processing scan line data using a method or procedure which does not reduce speckle, and during one scan sequence, simultaneously acquiring the two scan line data, that data processed reducing speckle and that data processed without reducing speckle.
    • 本发明一般涉及一种改进的系统和方法,该系统和方法结合了用于散斑跟踪的增强和减轻技术,用于随时间获得目标(例如组织)的运动的一系列图像。 该方法包括以下步骤:将声波传输到人体内并输出这些声波的回波; 接收和波束成形回波以产生扫描线数据; 使用减少斑点的方法处理扫描线数据以显示解剖信息; 使用不减少散斑的方法或程序来处理扫描线数据,并且在一个扫描序列期间,同时获取两条扫描线数据,该数据被处理减少斑点,并且该数据被处理而不减少斑点。