公开(公告)号：US20070293758A1

公开(公告)日：2007-12-20

申请号：US11882895

申请日：2007-08-07

Applicant: Shin-ichiro Umemura ,  Yuichi Miwa ,  Takashi Azuma ,  Takashi Sugiyama ,  Hiroshi Kuribara

Inventor： Shin-ichiro Umemura ,  Yuichi Miwa ,  Takashi Azuma ,  Takashi Sugiyama ,  Hiroshi Kuribara

IPC: A61B8/00

CPC classification number: G01S7/52047 ,  A61B8/481 ,  G01S7/5202 ,  G01S7/52026 ,  G01S7/52038 ,  G01S15/8963 ,  G10K11/346

Abstract: To provide an ultrasonograph capable of generating a transmission beam comprising a main beam having a uniform width over a wide range in an ultrasonic wave propagation direction by one-time transmission of an ultrasonic pulse. A weighted mean value of a plurality of transmission delay time values corresponding to focal lengths of transmission pulse waves having a plurality of focal points which are set in the ultrasonic wave propagation direction is calculated for each of elements constituting a transmission aperture and used as the delay time. Waves are actually transmitted with the weighted mean value as delay time. As the weight used for obtaining the delay time mean value, first, a transmission effective aperture width according to each transmission focal length is selected, and a weight in the direction of the transmit aperture realizing the width is calculated and is used in a focal length direction. As a result, the curvature of a wave front of a wave transmitted is close to that of the wave front of a short focal length in the center portion of the transmit aperture, and is close to that of the wave front of a long focal length in the peripheral portion. Consequently, a non-cylindrical wave front is formed. Thus, a transmission beam including a relatively narrow main beam with a uniform width over a wide range in the ultrasonic wave propagation direction can be generated by one-time transmission of an ultrasonic pulse.

公开(公告)号：US20070078326A1

公开(公告)日：2007-04-05

申请号：US10583033

申请日：2004-11-16

Applicant: Hideki Yoshikawa ,  Takashi Azuma ,  Shin-ichiro Umemura ,  Ken-ichi Kawabata

Inventor： Hideki Yoshikawa ,  Takashi Azuma ,  Shin-ichiro Umemura ,  Ken-ichi Kawabata

IPC: A61B5/05

CPC classification number: A61B8/08

Abstract: There is provided a ultrasonic motion detecting device that detects a three-dimensional motion of an object. The ultrasonic motion detecting device, comprises first and second ultrasonic transducers 13 having piezoelectric elements arranged in an array, which transmit ultrasonic waves to an object and acquire reflection signals from the object, a motion detection unit 20 that extracts an estimation region which is used for estimating a motion of the object from the reflection signals that are acquired by the first and second ultrasonic transducers, and detects a three-dimensional motion within the estimation region; and an image display unit 19 that displays the three-dimensional motion within the estimation region, wherein ultrasonic wave scanning surfaces due to the first and second ultrasonic transducers cross over each other.

Abstract translation: 提供了一种检测物体的三维运动的超声波运动检测装置。 超声波运动检测装置包括具有排列成阵列的压电元件的第一和第二超声波换能器13，其将超声波向对象发送并从物体获取反射信号;运动检测单元20，其提取用于 根据由第一和第二超声换能器获取的反射信号估计物体的运动，并检测估计区域内的三维运动; 以及在估计区域内显示三维运动的图像显示单元19，其中由于第一和第二超声波换能器而引起的超声波扫描表面彼此交叉。

公开(公告)号：US20060173334A1

公开(公告)日：2006-08-03

申请号：US10562465

申请日：2004-06-09

Applicant: Takashi Azuma ,  Shin-Ichiro Umemura ,  Hirotaka Baba

Inventor： Takashi Azuma ,  Shin-Ichiro Umemura ,  Hirotaka Baba

IPC: A61B8/06

CPC classification number: A61B8/00 ,  G01S7/52077 ,  G01S15/8995

Abstract: In an ultrasonic imaging device having an image synthesizing unit, correlation between images to be synthesized is computed for balancing between an improvement in contrast resolution and an improvement in spatial resolution, and an amount of displacement between the images is computed. When the amount of displacement is large, the signals after envelop detection are synthesized. When the amount of displacement is small, RF signals are synthesized. Alternatively, the mixing frequency may be variable according to the amount of displacement, and the balance between an improvement in spatial resolution and that in contract resolution is achieved according to a degree of the positional displacement.

公开(公告)号：US06926671B2

公开(公告)日：2005-08-09

申请号：US10314263

申请日：2002-12-09

Applicant: Takashi Azuma ,  Shin-ichiro Umemura ,  Yuichi Miwa

Inventor： Takashi Azuma ,  Shin-ichiro Umemura ,  Yuichi Miwa

IPC: A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  G10K11/34 ,  H04R3/00 ,  H04R17/00 ,  A61B8/02

CPC classification number: G01S7/52093 ,  G01S7/52047 ,  G01S15/8927 ,  G01S15/8959 ,  G10K11/341

Abstract: An ultrasonic imaging apparatus and method combines dynamically focused reception and coded transmission/reception technologies by inexpensive circuitry. A receive aperture is divided into smaller apertures. Correspondingly, a receive beam former is divided into receive sub-beam formers 36a to 36n by which a phase alignment and summing process is performed. Thereafter, coded signals are compressed in decoders 37a to 37n in a time axis direction. Output signals from the decoders are once again subjected to a phase alignment and summing process in a second beam former.

Abstract translation: 超声波成像装置和方法通过廉价的电路组合动态聚焦的接收和编码的发送/接收技术。 接收孔径分为较小的孔径。 相应地，接收波束形成器被分成接收子波束形成器36a至36n，通过该接收子波束形成器进行相位对准和求和处理。 此后，编码信号在解码器37a至37n中沿时间轴方向被压缩。 来自解码器的输出信号再次在第二波束形成器中进行相位对准和求和处理。

公开(公告)号：US09754185B2

公开(公告)日：2017-09-05

申请号：US14342101

申请日：2012-08-07

Applicant: Teiichiro Ikeda ,  Takashi Azuma ,  Hiroshi Masuzawa

Inventor： Teiichiro Ikeda ,  Takashi Azuma ,  Hiroshi Masuzawa

IPC: H04N5/00 ,  G06K9/62 ,  A61B8/08 ,  G01S7/52 ,  G06T7/00 ,  H04N5/232 ,  G10K11/34 ,  A61B8/00 ,  G01S15/89

CPC classification number: G06K9/6202 ,  A61B8/4405 ,  A61B8/461 ,  A61B8/467 ,  A61B8/5207 ,  G01S7/52047 ,  G01S15/8915 ,  G01S15/8927 ,  G06T7/0012 ,  G10K11/346 ,  H04N5/232

Abstract: A weight value used for a beamforming process performed on received signals in an ultrasound imaging apparatus is obtained with a small amount of computations and with a high degree of precision, even when a method of adaptive signal processing is employed.Multiple elements 401 receive ultrasound signals from a test subject, and the similarity operator 404 obtains the similarity between the received signals x(n). By using the similarity C(n) between the received signals obtained by the similarity operator 404, the adaptive weight operator 407 computes the adaptive weight w(n) in association with the similarity. The beamforming operator 408 uses the adaptive weight w(n) and the received signal x(n) to generate a beamforming output. The imaging processor 108 uses the beamforming output to generate image data. By way of example, the similarity operator 404 performs computations of the similarity in the time direction.

公开(公告)号：US20130319282A1

公开(公告)日：2013-12-05

申请号：US13994432

申请日：2011-12-09

Applicant: Yuichirou Mitani ,  Takashi Azuma

Inventor： Yuichirou Mitani ,  Takashi Azuma

IPC: B61D17/00

CPC classification number: B61D17/00 ,  B60Q3/43 ,  B61D17/12 ,  B61D27/00

Abstract: In the interior equipment installation structure for a railcar according to the present invention, a first installation member is mounted to a roof body shell along the car longitudinal direction or the car width direction. Second installation members are attached to the first installation member using mechanical fastening tools such as bolts with the positions of the second installation members adjusted in the up-down direction of the car. The second installation members are used for installing lighting appliances such as fluorescent lights, each has a size corresponding to each of the lighting appliances, and are continuously installed. There are portions in which plate members are overlapped with each other between respective adjacent ones of the second installation members, and hand strap receivers are installed in these portions.

Abstract translation: 在根据本发明的用于轨道车辆的室内设备安装结构中，第一安装构件沿着轿厢纵向或车宽方向安装到屋顶主体壳体。 第二安装构件使用诸如螺栓的机械紧固工具附接到第一安装构件，其中第二安装构件的位置在轿厢的上下方向上调节。 第二安装构件用于安装诸如荧光灯的照明设备，每个具有与每个照明设备相对应的尺寸，并且被连续地安装。 存在板构件在相邻的相邻的第二安装构件之间彼此重叠的部分，并且手带接收器安装在这些部分中。

公开(公告)号：US20130289402A1

公开(公告)日：2013-10-31

申请号：US13992083

申请日：2011-12-01

Applicant: Marie Tabaru ,  Takashi Azuma ,  Hideki Yoshikawa ,  Kunio Hashiba

Inventor： Marie Tabaru ,  Takashi Azuma ,  Hideki Yoshikawa ,  Kunio Hashiba

IPC: A61B8/08

CPC classification number: A61B8/08 ,  A61B8/0825 ,  A61B8/0891 ,  A61B8/485 ,  G01S7/52049 ,  G01S7/52071 ,  G01S7/52073

Abstract: When multiple tissues having differing speeds of sound are intermixed in the viewing field of a measured subject such as a living body, the invention measures hardness, such as modulus of elasticity or viscosity, with high precision. As a means for detecting heterogeneity of sound speed in the tissues of a subject, a displacement-generating transmission beam is applied from a displacement generating beam-generating device (13) of a displacement-generating unit (10) on an ultrasound probe (1) to irradiate a focused ultrasonic wave into the living tissue and generate a shear wave. From the displacement-time waveforms of multiple positions of the shear wave detected using the displacement detection transmission beam-generating device (22) and the displacement detection received beam-computing device (23) of a displacement-detecting unit (20), at least two pieces of information, such as the integrated value and the maximum amplitude value, are obtained. On the basis of the two pieces of information, a heterogeneity-detecting device (26) of the displacement-detecting unit (20) detects the physical magnitude associated with the heterogeneity in sound speed arising from the tissue structure and displays same on a display (5).

Abstract translation: 当具有不同声速的多个组织混合在诸如生物体的被测量对象的视野中时，本发明以高精度测量诸如弹性模量或粘度的硬度。 作为用于检测被检体的组织中的声速的异质性的手段，从位移产生单元（10）的位移产生光束产生装置（13）向超声波探头（1）施加位移产生透射束 ）将聚焦超声波照射到活体组织中并产生剪切波。 根据位移检测传输光束产生装置（22）检测到的剪切波的多个位置和位移检测单元（20）的位移检测接收光束计算装置（23）的位移时间波形，至少 获得两个信息，例如积分值和最大振幅值。 基于两条信息，位移检测单元（20）的异质性检测装置（26）检测与由组织结构产生的声速异质性相关的物理量值，并将其显示在显示器上 5）。

公开(公告)号：US08333699B2

公开(公告)日：2012-12-18

申请号：US12671377

申请日：2008-02-15

Applicant: Takashi Azuma

Inventor： Takashi Azuma

IPC: A61B8/00

CPC classification number: A61B8/08 ,  A61B5/0053 ,  A61B8/485 ,  A61B8/5253 ,  G01S7/52042 ,  G01S15/8906 ,  G01S15/8984 ,  G01S15/8995

Abstract: An ultrasonograph is provided which, when a difference occurs between an expected tissue displacement direction and a displacement estimation direction, minimizes errors caused by the difference to improve accuracy of an elasticity image. The ultrasonograph includes: an ultrasound probe to emit an ultrasound in a plurality of mutually crossing directions against a subject; an ultrasound transmit and receive part to control the ultrasound probe to perform a plurality of transmissions and receptions of the ultrasound in each of the plurality of directions; a displacement vector processor to calculate a displacement vector in each of the plurality of directions from a result of the plurality of transmissions and receptions; a strain processor to calculate strain information of the subject based on the displacement vectors; an image data generator to create image data based on the calculated strain information; and a display to display an image based on the image data.

Abstract translation: 提供一种超声波检查仪，当在预期的组织位移方向和位移估计方向之间发生差异时，使由差异引起的误差最小化，以提高弹性图像的精度。 超声波检查仪包括：超声波探头，其针对被检体发射多个相互交叉的方向的超声波; 超声波发射和接收部分，以控制所述超声波探头以在所述多个方向中的每一个方向上执行所述超声波的多个发射和接收; 位移矢量处理器，用于根据所述多个发射和接收的结果来计算所述多个方向中的每一个中的位移矢量; 应变处理器，用于基于所述位移矢量来计算所述对象的应变信息; 图像数据生成器，用于基于所计算的应变信息创建图像数据; 以及基于图像数据显示图像的显示器。

公开(公告)号：US08323197B2

公开(公告)日：2012-12-04

申请号：US12039344

申请日：2008-02-28

Applicant: Miyuki Kono ,  Takashi Azuma ,  Shin-ichiro Umemura ,  Hiroki Tanaka

Inventor： Miyuki Kono ,  Takashi Azuma ,  Shin-ichiro Umemura ,  Hiroki Tanaka

IPC: A61B8/00

CPC classification number: A61B8/06 ,  A61B8/4472

Abstract: Means for measuring and evaluating a dynamic property of a blood flow in a superficial blood vessel of a living body are constructed.A physical stimulus is given to the blood flow, and an ultrasonic response from the blood flow to the physical stimulus is measured and evaluated, which allows the blood property to be evaluated noninvasively and dynamically. Therefore, a medical check and a lifestyle-related diseases prevention effect are promising.

Abstract translation: 构建用于测量和评价生物体的浅表血管中的血液流动性的手段。 对血流进行物理刺激，并测量和评估从血流到物理刺激的超声波响应，从而可以非侵入性地和动态地评估血液性质。 因此，医疗检查和与生活方式有关的疾病预防效果是有希望的。

公开(公告)号：US08132462B2

公开(公告)日：2012-03-13

申请号：US11996532

申请日：2006-01-30

Applicant: Takashi Azuma ,  Shinichiro Umemura ,  Tatsuya Nagata ,  Hiroshi Fukuda ,  Shuntaro Machida ,  Toshiyuki Mine

Inventor： Takashi Azuma ,  Shinichiro Umemura ,  Tatsuya Nagata ,  Hiroshi Fukuda ,  Shuntaro Machida ,  Toshiyuki Mine

IPC: G01N29/34 ,  H02N1/08

CPC classification number: A61B8/4483 ,  A61B8/08 ,  A61B8/4281 ,  B06B1/0292 ,  G01N29/2431 ,  G01S15/00

Abstract: The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103).

Abstract translation: 由作为基本单元的隔膜电声换能器（101）构成的超声波阵列换能器的接收灵敏度受到由于泄漏等引起的经过时间的电荷量的变化的影响，导致主光束灵敏度的漂移， 由于声学噪声水平的上升引起的声学SN比的降低，以及超声波束的方向性的劣化。 为了解决这个问题，提供一种充电控制器（充电监视器211）来控制电声换能器（101）中的电荷。 充电监视部（102）监视充电量的变化。 当充电量的变化小时，通过例如将接收信号乘以对应于变化量的校准系数，由控制器（104）校准发射灵敏度或接收灵敏度。 此外，当电荷量的变化大时，例如，电荷可以从电荷发射体（103）重新发射。