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    • 1. 发明授权
    • Method and apparatus for processing ultrasonic echo signals
    • 超声回波信号处理方法及装置
    • US4703440A
    • 1987-10-27
    • US14211
    • 1987-02-05
    • Adalbert BirkUlrich Saugeon
    • Adalbert BirkUlrich Saugeon
    • G01S7/539A61B8/00G01N29/04G01N29/44G01S7/52G01S7/531G01S7/62G01S15/89G06F15/72H04N7/01
    • G01S7/531G01S7/52063G01S7/52044
    • A method and apparatus for processing ultrasonic echo signals employ intermediate storage and representation of the echo signals in the form of image vectors, such storage and representation proceeding independently of the scanning technique utilized to generate the image vectors, such that switching among various scanning techniques is permitted. The full length of each image vector is written into an image memory in column fashion, the stored vectors being read out as image signals in a format suitable for specific types of representation, such as on a television monitor, the format instructions being contained in a memory or generated by an arithmetic unit. Upon read out from the image memory, the geometric form of the ultrasonic scan is reconstructed in a position and form corresponding to the actual scan, and the ultrasonic echo signals are similarly represented at their true positions.
    • 用于处理超声波回波信号的方法和装置采用图像向量的形式的中间存储和回波信号的表示,这种存储和表示独立于用于产生图像矢量的扫描技术进行,使得各种扫描技术之间的切换是 允许的 将每个图像向量的全长以列的方式写入图像存储器中,存储的矢量作为图像信号以适合于特定类型的表示的格式被读出,诸如在电视监视器上,格式指令包含在 存储器或由算术单元生成。 从图像存储器读出时,以对应于实际扫描的位置和形式重建超声波扫描的几何形状,并且超声波回波信号在其真实位置处被类似地表示。
    • 2. 发明授权
    • Method and apparatus for digital delay of ultrasound signals upon
reception thereof
    • 在接收超声信号时数字延迟的方法和装置
    • US4787392A
    • 1988-11-29
    • US46512
    • 1987-05-06
    • Ulrich Saugeon
    • Ulrich Saugeon
    • A61B8/00A61B8/14G01N29/04G01S7/52G01S15/89A61B10/00
    • G01S7/52046G01S15/8918G01S7/52034G10K11/346
    • A method and apparatus for digitally delaying ultrasound signals, which are reflected from a boundary surface inside of an examination subject, upon reception of the signals at an ultrasound receiver employ, in each channel, a shift register, a first multiplexer, another register, and interpolator and a further multiplexer to effect a selected delay. A number of interpolated ultrasound signals is formed from two successively received ultrasound signals. If the successive ultrasound signals are shifted by .DELTA..tau., the interpolated ultrasound signals will be shifted by a smaller time difference relative to each other, dependent on the fineness of the interpolation. That interpolated ultrasound signal or that received ultrasound signal having a delay value which is closest to a selected desired delay value is employed for further signal processing. A high precision in the chronological resolution can thus be achieved with a relatively low sampling rate in comparison to the chronological resolution.
    • 在超声波接收机接收到信号时,在检查对象内部从边界面反射的数字延迟超声信号的方法和装置在每个通道中使用移位寄存器,第一多路复用器,另一个寄存器和 内插器和另一个多路复用器来实现所选择的延迟。 由两个连续接收的超声信号形成多个内插超声信号。 如果连续的超声信号被偏移了DELTA,则内插的超声信号将相对于彼此移位较小的时间差,取决于内插的细度。 该内插超声信号或具有最接近所选期望延迟值的延迟值的接收超声信号用于进一步的信号处理。 因此,与时间分辨率相比,可以以相对低的采样率实现按时间顺序分辨率的高精度。
    • 3. 发明授权
    • Method and apparatus for ultrasonic scanning of an object
    • 用于物体超声波扫描的方法和装置
    • US4733562A
    • 1988-03-29
    • US884590
    • 1986-07-11
    • Ulrich Saugeon
    • Ulrich Saugeon
    • A61B8/14G01S7/52G01S15/89G03B42/06G10K11/34G01N29/04
    • G01S15/8927G01S15/8918G01S7/5206G01S7/52085G10K11/345
    • An ultrasonic array having a number of juxtaposed transducer elements is used for imaging. The reception aperture of the array is divided into individual sub-arrays. Each of these sub-arrays receives, after emission of an ultrasonic signal correlated with it into the object, echo signals reflected therefrom. The echo signals received by the respective sub-array and which are reflected from a common focal point are added up to form a sum signal. For this purpose, at least for some of the transducer elements the delivered output signals are time-delayed according to given patterns. This procedure is repeated for various points along each scan line. The sequentially obtained sum signals are superimposed at each point of the scan line to form a received signal. With this line-oriented method, the same processing channels (time-delays) can be used several times, i.e. successively for each sub-array. This leads to cost-effective production.
    • 具有多个并置的换能器元件的超声波阵列用于成像。 阵列的接收孔径被分成单独的子阵列。 这些子阵列中的每一个在与其相关的超声信号发射到物体之后接收从其反射的回波信号。 由相应子阵列接收并从公共焦点反射的回波信号相加,以形成和信号。 为此目的,至少对于一些换能器元件,传递的输出信号根据给定的模式是时间延迟的。 沿着每个扫描线的各个点重复该过程。 顺序获得的和信号叠加在扫描线的每个点处以形成接收信号。 利用这种面向行的方法,可以多次使用相同的处理通道(时间延迟),即每个子阵列连续地使用。 这导致成本效益的生产。
    • 4. 发明授权
    • Method and apparatus for delaying an ultrasound signal
    • 用于延迟超声信号的方法和装置
    • US4632124A
    • 1986-12-30
    • US759542
    • 1985-07-26
    • Dietmar HillerUlrich Saugeon
    • Dietmar HillerUlrich Saugeon
    • G01S7/523G01S7/52H03H11/26A61B5/02
    • H03H11/26G01S7/52026
    • In medical ultrasonic technology (in particular with phased arrays) it is necessary to delay in time a plurality of received ultrasound signals and subsequently to add them after they are as nearly in phase as possible. The delay times required for this purpose are approximately between 0 and 10 .mu.s. The ultrasound signal is analyzed as to envelope and a sign. The envelope is then delayed either in analog (e.g. with LC delay lines) or digitally (e.g. with shift registers) through a delay means which is adjustable in coarse time steps of e.g. 500 ns. The sign signal corresponding to the sign of the ultrasound signal is delayed via a digital delay section which is adjustable in small time steps of e.g. 50 ns. Phase coherence to other ultrasound signals can be established. Thereafter the delayed sign signal and the delayed envelope signal are multiplied one by the other in a multiplier. Thereafter the output signal is filtered in a low-pass filter. The output from the low-pass filter then represents the delayed form of the ultrasound signal.
    • 在医疗超声波技术(特别是相控阵列)中,需要时间延迟多个接收的超声信号,并且随后在它们尽可能接近同相之后添加它们。 此目的所需的延迟时间约为0至10微秒。 分析超声信号的信封和符号。 然后通过延迟装置将包络线以模拟(例如用LC延迟线)或数字地(例如用移位寄存器)延迟,该延迟装置可以在例如粗略的时间步长中进行调节。 500 ns。 对应于超声信号的符号的符号信号经由数字延迟部分被延迟,该数字延迟部分可以在例如小时间步骤中调节。 50 ns 可以建立与其他超声信号的相位相干性。 此后,延迟符号信号和延迟包络信号在乘法器中彼此相乘。 此后,输出信号在低通滤波器中被滤波。 然后,来自低通滤波器的输出表示超声信号的延迟形式。
    • 6. 发明授权
    • Ultrasound apparatus permitting dynamic variation of the position of the
reception focus
    • 超声波设备允许接收焦点位置的动态变化
    • US4707813A
    • 1987-11-17
    • US929736
    • 1986-11-12
    • Reiner MoellerGert HetzelUlrich SaugeonGustav BoheimViktor Zurinski
    • Reiner MoellerGert HetzelUlrich SaugeonGustav BoheimViktor Zurinski
    • G01N29/26A61B8/00G01N29/04G01N29/44G01S7/52G01S15/89G10K11/34H04R3/00G01S9/68
    • G01S7/52046G01S15/8918G01S7/52033G10K11/345
    • An ultrasound apparatus permitting dynamic variation of the position of the reception focus of a prescribable number of ultrasound transducer elements has a reception channel including a time-delay circuit for the received ultrasound echo signal following every ultrasound transducer element. For switching between different, prescribed time-delay values (T.sub.1, T.sub.2, . . . T.sub.n), the time-delay circuit is connected to a control device. A part of the time-delay circuit is redundantly designed, so that first and a second sub-circuits for forming the time-delayed ultrasound echo signal are present. A dissolve circuit is provided which causes the second sub-circuit to be faded in the reception channel when the first sub-circuit, in a blanked condition, is switched to a different time-delay value (T.sub.1, T.sub.2, . . . T.sub.n), and vice versa, by a control device. Significant time is thus saved when switching between the different focus positions of the ultrasound apparatus. Transmission of switching clicks onto the respectively activated sub-circuit is prevented by the use of isolating amplifiers.
    • 允许动态变化可规定数量的超声波换能器元件的接收焦点位置的超声波装置具有接收通道,该接收通道包括每个超声换能器元件之后的所接收的超声回波信号的延时电路。 为了在不同的规定时间延迟值(T1,T2 ... Tn)之间切换,延时电路连接到控制装置。 时间延迟电路的一部分被冗余地设计,使得存在用于形成时间延迟的超声回波信号的第一和第二子电路。 提供一种溶解电路,当处于消隐状态的第一子电路被切换到不同的延时值(T1,T2 ... Tn)时,使第二子电路在接收通道中褪色, ,反之亦然,由控制装置。 因此,在超声波装置的不同焦点位置之间切换时,节省了大量时间。 通过使用隔离放大器来防止切换点击到分别激活的子电路的传输。