公开(公告)号：US20170042510A1

公开(公告)日：2017-02-16

申请号：US15306880

申请日：2015-04-22

Applicant: HITACHI, LTD.

Inventor： Teiichiro IKEDA ,  Shinta TAKANO ,  Hiroshi MASUZAWA ,  Chizue ISHIHARA ,  Mayumi SUZUKI

IPC: A61B8/00 ,  A61B8/14

Abstract: Reception beamforming is executed using delay times that complexly vary in accordance with differences between transmission conditions. An irradiation area 32 of a transmission beam is calculated, and the lengths of segments, using which delay times are calculated, are set in accordance with the positional relationships between the calculated irradiation area 32 and reception scanning lines 31. For example, the reception scanning lines 31 are divided into areas A to C, and the lengths of segments 40b in the outer area B located outside of the irradiation area 32 are set shorter than the lengths of segments 40a and 40c in the inner areas A and C.

Abstract translation: 使用根据传输条件之间的差异而复杂变化的延迟时间执行接收波束成形。 计算发射光束的照射区域32，并且根据计算的照射区域32和接收扫描线31之间的位置关系来设定计算延迟时间的片段的长度。例如，接收扫描 线31被划分为区域A至C，并且位于照射区域32外部的外部区域B中的区段40b的长度被设定为短于内部区域A和C中的区段40a和40c的长度。

公开(公告)号：US20180021013A1

公开(公告)日：2018-01-25

申请号：US15550151

申请日：2016-01-25

Applicant: Hitachi, Ltd.

Inventor： Mayumi SUZUKI ,  Teiichiro IKEDA ,  Hiroshi MASUZAWA ,  Chizue ISHIHARA

IPC: A61B8/14 ,  A61B8/00

CPC classification number: A61B8/14 ,  A61B8/4488 ,  A61B8/54 ,  G01S7/52033 ,  G01S15/8915 ,  G01S15/8997

Abstract: In performing aperture synthesis according to an ultrasound imaging apparatus, the amount of spatial change of amplification factors of phasing signals at respective receive phasing points are reduced, and a high-quality image is obtained. In a receive beamformer that generates an inter-transmission weight in accordance with a phasing range, and performs aperture synthesis processing, the inter-transmission weight being generated is applied to the receive phasing points within the phasing range obtained through transmission and reception, and the inter-transmission synthesis is performed. The inter-transmission weight is generated in such a manner that a variation form of the amplification factor between adjacent receive phasing points is smoothed and a difference of the amplification factor is reduced, as to each receive phasing point after the inter-transmission synthesis is performed.

公开(公告)号：US20170209123A1

公开(公告)日：2017-07-27

申请号：US15320050

申请日：2014-07-17

Applicant: HITACHI, LTD.

Inventor： Shinta TAKANO ,  Hiroshi MASUZAWA ,  Hiroki TANAKA

IPC: A61B8/00

CPC classification number: A61B8/4494 ,  A61B8/00 ,  A61B8/465 ,  A61B8/54 ,  G01S7/52046 ,  G01S7/52084 ,  G01S7/52085 ,  G01S7/52095 ,  G01S15/8915

Abstract: There is provided an ultrasound imaging apparatus that can reduce vertical stripes even though a transmission interval is widened for high speed imaging. When a receiving unit 1201 receives an instruction to perform a high speed imaging mode, an aperture synthesizing unit 1300 adds a predetermined number (N) of phase outputs obtained from the reflected ultrasonic waves of individual transmission beams at the same received focal points to reduce the occurrence of stripes on an image. In order to generate N phase outputs at each of the received focal points, a control unit 401 finds a necessary number (M) of the reception scanning lines to be set by the reception beam former 603, and notifies the reception beam former 603 of the number.

公开(公告)号：US20170042509A1

公开(公告)日：2017-02-16

申请号：US15306851

申请日：2015-04-22

Applicant: Hitachi, Ltd.

Inventor： Teiichiro IKEDA ,  Hiroshi MASUZAWA ,  Shinta TAKANO ,  Chizue ISHIHARA ,  Mayumi SUZUKI

IPC: A61B8/00 ,  A61B8/08 ,  A61B8/14

CPC classification number: A61B8/4488 ,  A61B8/14 ,  A61B8/145 ,  A61B8/5207 ,  A61B8/5269 ,  G01S7/5205 ,  G01S7/52085 ,  G01S15/8915 ,  G01S15/8997 ,  G10K11/346

Abstract: Reception beamforming that does not generate discontinuity in the vicinity of the depth of a transmit focus is executed even if reception scanning lines are disposed outside of the irradiation area of a focusing-type transmission beam. The degree of discontinuity showing the discontinuity of reception signals detected by plural ultrasound elements 105 or the degree of discontinuity regarding the discontinuity of the wave fronts of phased signals is detected by a discontinuity extracting unit 113. If there is an area where the degree of discontinuity is larger than a predefined value, a delay time generating unit 114 for discontinuity elimination changes the delay times in the area where the discontinuity is generated.

Abstract translation: 即使接收扫描线设置在聚焦型发送光束的照射区域的外侧，也执行不发生发送焦点深度附近的不连续的接收波束成形。 由不连续性提取单元113检测显示由多个超声波元件105检测到的接收信号的不连续性的不连续程度或相位信号的波前的不连续性的不连续程度。如果存在不连续程度的区域 大于预定值时，用于不连续消除的延迟时间生成单元114改变在产生不连续的区域中的延迟时间。

公开(公告)号：US20160363657A1

公开(公告)日：2016-12-15

申请号：US15121418

申请日：2014-02-26

Applicant: HITACHI, LTD.

Inventor： Tatsuo NAKAGAWA ,  Hiroshi MASUZAWA ,  Shinya KAJIYAMA

IPC: G01S7/52 ,  A61B8/14 ,  A61B8/00 ,  G01S15/89

CPC classification number: G01S7/52046 ,  A61B8/145 ,  A61B8/4444 ,  A61B8/4494 ,  A61B8/5207 ,  G01S7/52025 ,  G01S7/5208 ,  G01S15/8915 ,  G10K11/346

Abstract: A compact delay circuit that can dynamically change delay time is configured. A probe includes an analog memory unit that accumulates electric charges corresponding to a reflected wave of an ultrasonic wave produced by a difference between the acoustic impedances on a plurality of capacitors 303 and in turn outputs the electric charges accumulated on the capacitors 303 to an analog memory unit 205. In accumulating electric charges, when a control signal Ctls_l that increases delay time of the reflected wave is inputted, the analog memory unit 205 accumulates the same electric charges on two or more of the capacitors 303 for a preset period, or in outputting electric charges, when a control signal Ctlo_l is inputted, the analog memory unit 205 outputs the electric charges accumulated on one of the capacitors 303 for a preset period.

Abstract translation: 配置可以动态更改延迟时间的紧凑型延迟电路。 探头包括模拟存储器单元，其累积与由多个电容器303上的声阻抗之间的差产生的超声波的反射波相对应的电荷，然后将累积在电容器303上的电荷输出到模拟存储器 单元205.在累积电荷中，当输入增加反射波的延迟时间的控制信号Ctls_1时，模拟存储单元205在预定时段内在两个或更多个电容器303上累积相同的电荷，或者在输出 电荷，当输入控制信号Ctlo_1时，模拟存储单元205输出累积在一个电容器303上的预定时段的电荷。

公开(公告)号：US20150313575A1

公开(公告)日：2015-11-05

申请号：US14648463

申请日：2012-12-07

Applicant: HITACHI, LTD.

Inventor： Hiroki TANAKA ,  Hiroshi MASUZAWA

IPC: A61B8/00 ,  A61B8/08 ,  A61B8/14 ,  G01S15/89

CPC classification number: G01S7/5208 ,  A61B8/145 ,  A61B8/4444 ,  A61B8/4488 ,  A61B8/4494 ,  A61B8/5207 ,  B06B1/0207 ,  B06B1/0622 ,  B06B2201/20 ,  B06B2201/76 ,  G01S15/8925 ,  G01S15/8927 ,  G10K11/346

Abstract: An ultrasonic probe includes a plurality of ultrasonic transducers. The ultrasonic probe is connected to a reception system circuit including at least one first delay adder circuit in which a predetermined number among the plurality of ultrasonic transducers is configured as one subarray and delaying and adding are performed in subarray units with respect to an ultrasonic wave reception signal that is acquired from the ultrasonic transducers included in the subarray, and a second delay adder circuit in which delaying and adding are performed with respect to the ultrasonic wave reception signal that is acquired from the ultrasonic transducers. The plurality of ultrasonic transducers include a first group which transmits the reception signal to the second delay adder circuit passing through the first delay adder circuit and a second group which transmits the reception signal directly to the second delay adder circuit without passing through the first delay adder circuit.

Abstract translation: 超声波探头包括多个超声换能器。 超声波探头连接到包括至少一个第一延迟加法器电路的接收系统电路，其中多个超声波换能器中的预定数量被配置为一个子阵列，并且相对于超声波接收以子阵列单位执行延迟和相加 从包括在子阵列中的超声换能器获取的信号;以及第二延迟加法电路，其中对于从超声换能器获取的超声波接收信号执行延迟和相加。 多个超声换能器包括将接收信号发送到通过第一延迟加法电路的第二延迟加法器电路的第一组和将接收信号直接发送到第二延迟加法器电路而不经过第一延迟加法器的第二组 电路。