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    • 5. 发明公开
    • ULTRASOUND IMAGE CAPTURING DEVICE AND METHOD OF PROCESSING ULTRASOUND SIGNAL
    • 超声图像捕获装置和处理超声信号的方法
    • EP3260047A1
    • 2017-12-27
    • EP16752311.7
    • 2016-02-04
    • Hitachi, Ltd.
    • HIROSHIMA, MisakiIKEDA, TeiichiroISHIHARA, Chizue
    • A61B8/14
    • A61B8/14A61B8/4488G01S15/8925
    • Without using any approximated wave front propagation model, appropriate delay times are set for received signals to obtain phased signals for both the inside and outside of irradiation area of transmission beam.
      A reception beamformer comprises a wave front propagation calculator 121 that obtains times until ultrasonic waves transmitted from a plurality of ultrasonic transducers arrive at a reception focus by calculation, and a delay time extractor 122 that calculates delay times for the reception focus on the basis of distribution of the arrival times of the ultrasonic waves for each of the plurality of the ultrasonic transducers obtained by the wave front propagation calculator 121. Therefore, even if the wave front that arrives at the reception focus has a complicated shape, it is not necessary to approximate the wave front, and phasing addition can be performed with appropriate delay times obtained from times until the ultrasonic waves arrive at the reception focus.
    • 在不使用任何近似的波前传播模型的情况下,为接收到的信号设置适当的延迟时间,以获得发射波束照射区域内部和外部的相位信号。 接收波束形成器包括波前传播计算器121和延迟时间提取器122,波前传播计算器121获取从多个超声波换能器发射的超声波到达接收焦点的时间,延迟时间提取器122基于分布计算接收焦点的延迟时间 由波前传播计算器121获得的多个超声波换能器中的每个超声换能器的超声波的到达时间。因此,即使到达接收焦点的波前具有复杂的形状,也不需要近似 可以用从超声波到达接收焦点的时间获得的适当延迟时间执行波前和相位相加。
    • 6. 发明公开
    • TWO-DIMENSIONAL ULTRASOUND IMAGING TRANSDUCER ARRAY WITH A NON-RECTANGULAR ACTIVE SENSING REGION
    • 具有非矩形主动感知区域的二维超声成像传感器阵列
    • EP3191868A1
    • 2017-07-19
    • EP14777225.5
    • 2014-09-12
    • Sound Technology Inc.
    • BEERS, Christopher, J.CONKLIN, Joseph, S.McHENRY, Dean, A.JENSEN, HenrikWOODS, Russell, W.
    • G01S15/89
    • G01S15/8925G01S7/52085
    • An ultrasound imaging system (102) includes a transducer array (108) with a two-dimensional array of rows (110) of transducer elements (114). The transducer elements of each row extend along a long axis (116). The rows are parallel to each other. The transducer array includes a non-rectangular set of active transducer elements. The ultrasound imaging system further includes transmit circuitry (118) that actuates the transducer elements to transmit an ultrasound signal. The ultrasound imaging system further includes receive circuitry (120) that receives echoes produced in response to an interaction between the ultrasound signal and a structure and received by the transducer elements. The ultrasound imaging system further includes a beamformer that processes the echoes and generates one or more scan lines indicative of the structure.
    • 超声成像系统(102)包括具有换能器元件(114)的行(110)的二维阵列的换能器阵列(108)。 每行的换能器元件沿着长轴(116)延伸。 这些行彼此平行。 换能器阵列包括非矩形的一组有源换能器元件。 超声成像系统还包括致动换能器元件以发射超声信号的发射电路(118)。 超声成像系统还包括接收电路(120),其接收响应于超声信号与结构之间的相互作用而产生并由换能器元件接收的回声。 超声成像系统还包括波束形成器,其处理回波并产生指​​示结构的一条或多条扫描线。