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    • 2. 发明申请
    • ENERGY WEIGHTED PARAMETER SPATIAL/TEMPORAL FILTER
    • 能量加权参数空间/时间过滤器
    • WO1996033656A1
    • 1996-10-31
    • PCT/US1996005750
    • 1996-04-25
    • ACUSON CORPORATIONGURACAR, Ismayil, M.
    • ACUSON CORPORATION
    • A61B08/06
    • G01S15/8988G01S7/52046G01S7/52066G01S15/58G01S15/8979H03H17/0202
    • In an ultrasound imaging system, the mean velocity of a fluid flow, variance of velocity of the fluid flow and energy value of Doppler ultrasound signals from the flow in response to transmitted ultrasound are first estimated (40) from autocorrelation values of the signals to form a set of parameters (Vel)(Var)(Ene) for a corresponding sampling time or a corresponding sampling location. An averaging process (50) is then performed on two sets of the estimated parameters corresponding to a plurality of different sampling times in temporal filtering or on two sets of the estimated parameters corresponding to a plurality of different locations in spatial filtering. The filtered parameters (Vel")(Var")(Ene") are then compared to thresholds in a discrimination process (52) to reject noise and clutter.
    • 在超声成像系统中,首先从信号的自相关值估计流体流动的平均速度,流体流动速度的方差和来自响应于发射超声的流的多普勒超声信号的能量值(40) 相应采样时间的一组参数(Vel)(Var)(Ene)或相应的采样位置。 然后对时间滤波中对应于多个不同采样时间的两组估计参数执行平均处理(50),或对与空间滤波中的多个不同位置相对应的两组估计参数执行平均处理(50)。 然后将滤波参数(Vel“)(Var”)(Ene“)与鉴别处理(52)中的阈值进行比较以抑制噪声和杂波。
    • 5. 发明申请
    • ULTRASOUND IMAGING METHOD AND APPARATUS WITH DYNAMIC NON-LINEAR FILTERING
    • 超声成像方法和装置与动态非线性滤波
    • WO1994027402A1
    • 1994-11-24
    • PCT/US1994004946
    • 1994-05-05
    • ACUSON CORPORATION
    • ACUSON CORPORATIONHEDBERG, DaveGURACAR, Ismayil, MustafaCARP, StuartARENSON, James, WilfredMASLAK, Samuel, H.TIERNEY, Michael, J.
    • H04N05/213
    • G06T5/20G01N2291/02491
    • Method and apparatus for enhancing the clarity of diagnostic information in real-time B-mode and M-mode ultrasound displays including a beamformer (1) for acquiring ultrasound signals, a signal processor for processing the ultrasound signal with programmable dynamically variable non-linear filters (4, 7), and a display (9) for viewing the ultrasound signals. The non-linear filters (4, 7) may process video signals in range along each ultrasound scan line or azimuthally along multiple ultrasound scan lines of a two-dimensional B-mode image. The non-linear filters (4, 7) also can be two-dimensionally programmable for processing video signals both in range along each ultrasound scan line and azimuthally along multiple ultrasound scan lines over regions of a two-dimensional B-mode image. The non-linear filter (4, 7) may be responsive to a local signal measurement and to spatial positions in a B-mode image for control of filter parameters. The non-linear filter (4, 7) can also be programmable to accomodate variable system characteristics for particular imaging applications.
    • 用于增强实时B模式和M模式超声显示中的诊断信息的清晰度的方法和装置,包括用于获取超声信号的波束形成器(1),用可编程动态可变非线性滤波器处理超声信号的信号处理器 (4,7)和用于观看超声信号的显示器(9)。 非线性滤波器(4,7)可以沿着每个超声波扫描线或沿着二维B模式图像的多个超声扫描线的方位角处理视频信号。 非线性滤波器(4,7)也可以二维编程,用于在沿着每个超声波扫描线的范围内以及在二维B模式图像的区域上沿着多个超声扫描线的方位角处理视频信号。 非线性滤波器(4,7)可以响应本地信号测量和B模式图像中的空间位置,以控制滤波器参数。 非线性滤波器(4,7)也可以被编程为适应特定成像应用的可变系统特性。
    • 6. 发明申请
    • ULTRASONIC RECEIVE BEAMFORMER WITH PHASED SUB-ARRAYS
    • 超声波接收带有相位子阵列的波束形成器
    • WO1997008991A1
    • 1997-03-13
    • PCT/US1996013249
    • 1996-08-16
    • ACUSON CORPORATION
    • ACUSON CORPORATIONPETROFSKY, Joseph, G.MASLAK, Samuel, H.COLE, Christopher, R.
    • A61B08/00
    • G01S15/8927G01S7/52026G01S7/52028G01S7/52046G01S15/8915G01S15/8993G01S15/8995G10K11/345G10K11/346
    • An ultrasonic receive beamformer (10) includes transducers (11) forming receive signals that are applied to sub-array processors (12). Each sub-array processor includes at least one analog preconditioning circuit (13), phase shifter (14) and a summer (16), 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 via an analog-to-digital converter (18) to a respective beamformer processor (20). 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 beam former 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.
    • 超声波接收波束形成器(10)包括形成施加到子阵列处理器(12)的接收信号的换能器(11)。 每个子阵列处理器包括至少一个模拟预处理电路(13),移相器(14)和加法器(16),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相应的 相位角,并将相移的换能器信号应用于夏季。 每个夏季通过模数转换器(18)将相加的子阵列信号提供给相应的波束形成器处理器(20)。 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。
    • 8. 发明申请
    • PHASED ARRAY TRANSDUCER DESIGN AND METHOD FOR MANUFACTURE THEREOF
    • 相位阵列传感器设计及其制造方法
    • WO1996039938A1
    • 1996-12-19
    • PCT/US1996006658
    • 1996-05-10
    • ACUSON CORPORATION
    • ACUSON CORPORATIONHANAFY, AminMARIAN, Vaughn, R.PLUGGE, Jay, Sterling
    • A61B08/00
    • G10K11/345Y10T29/42
    • This invention is a phased array transducer (50) and a method for the manufacture thereof having a design that allows the array to focus in a near field of interest and a far field of interest. The array (50) includes a plurality of even and odd numbered transducer elements (52, 51) where the even and odd numbered elements (52, 51) have an active region of particular widths. The width (62, 64, 66) of the active region of the odd numbered elements (51) is different than the width (66) of the active region of the even numbered elements (52) so that the odd numbered elements (51) can be used to image in one field of interest, while the even numbered elements (52) can be used to image in another field of interest.
    • 本发明是一种相控阵变换器(50)及其制造方法,其具有允许阵列聚焦在感兴趣的近场和感兴趣的远场中的设计。 阵列(50)包括多个偶数和奇数的换能器元件(52,51),其中偶数和奇数元件(52,51)具有特定宽度的有源区域。 奇数元件(51)的有源区域的宽度(62,64,66)不同于偶数元件(52)的有源区域的宽度(66),使得奇数元件(51) 可以用于在一个感兴趣的领域中进行图像,而偶数编号的元件(52)可以用于在另一个感兴趣的领域中成像。