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。

公开(公告)号：US08118745B2

公开(公告)日：2012-02-21

申请号：US12039367

申请日：2008-02-28

Applicant: Shinichiro Umemura ,  Takashi Azuma

Inventor： Shinichiro Umemura ,  Takashi Azuma

IPC: A61B8/00

CPC classification number: G01S15/8952 ,  G01S7/52046

Abstract: With a natural number n, an ultrasound pulse having a center frequency of nf0 is transmitted, and an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. Another ultrasound pulse having a center frequency of (n+1)f0 is transmitted, and, similarly, an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. The received echo signal which has a center frequency of nf0 is raised to the power of (n+1) in a self-multiplication unit. Meanwhile, The received echo signal having a center frequency of (n+1)f0 is raised to the power of n in another self-multiplication unit. Each multiplication produces a signal having a center frequency of n(n+1)f0. A signed echo signal is obtained by a phase-sensitive detection between the two obtained signals.

Abstract translation: 利用自然数n，发送具有nf0的中心频率的超声波脉冲，并且接收通过被检体内的声阻抗界面的反射而产生的回波。 发送具有（n + 1）f0的中心频率的另一个超声波脉冲，同样地，接收由被检查物体内的声阻抗界面的反射产生的回波。 接收到的中心频率为nf0的回波信号在自乘单元中提高到（n + 1）的功率。 同时，具有中心频率（n + 1）f0的接收回波信号在另一个自乘单元中提高到n的功率。 每个乘法产生具有中心频率n（n + 1）f0的信号。 通过两个获得的信号之间的相敏检测来获得有符号回波信号。

公开(公告)号：US07942821B2

公开(公告)日：2011-05-17

申请号：US10580225

申请日：2004-07-09

Applicant: Shin-ichiro Umemura ,  Takashi Azuma ,  Tetsuya Hayashi

Inventor： Shin-ichiro Umemura ,  Takashi Azuma ,  Tetsuya Hayashi

IPC: A61B8/00

CPC classification number: G01S15/8981 ,  G01S15/8977

Abstract: The present invention realizes a Doppler velocity detecting technique capable of performing velocity detection and analysis with a suppressed error while excellently distinguishing a clutter signal, and provides an ultrasonographic device using the technique. In a Doppler velocity detection device comprising means for transmitting/receiving pulse waves to/from a subject a plurality of times, and velocity analyzing means for analyzing a velocity of a moving reflector in the subject on the basis of a reception echo signal, the velocity analyzing means obtains a complex expansion coefficient by linearly connecting an expansion coefficient of an even-numbered degree term and an expansion coefficient of an odd-numbered degree term which is different from the even-numbered degree term by one degree, derived when reception echo time-series signals obtained by arranging reception echo signals of equal lapse time from pulse transmission times in order of the transmission times are expanded as components of a Legendre polynomial starting from the 0th degree, by using an imaginary unit as a coefficient, and obtains a signed velocity signal of a moving reflector in the subject on the basis of-the ratio between the magnitude of each complex expansion coefficient and the magnitude of an interval between the complex expansion coefficients.

Abstract translation: 本发明实现了一种多普勒速度检测技术，其能够在抑制误差的同时进行速度检测和分析，同时优异地区分杂波信号，并提供使用该技术的超声波装置。 在多普勒速度检测装置中，包括用于多次向对象发送/接收脉搏波的装置，以及速度分析装置，用于根据接收回波信号分析被检体内的移动反射器的速度，速度 分析装置通过将偶数度项的展开系数和与偶数度项不同的奇数项的展开系数线性连接一度获得复数展开系数，当接收回波时间 通过使用虚数单位作为系数，将从发送时间的顺序的脉冲发送时间的等待通过时间的接收回波信号作为从第0度开始的勒让德多项式的分量扩展得到的系列信号， 基于每个复合扩张系数的大小之间的比例，对象中的移动反射器的速度信号 有效率和复合扩张系数间隔的大小。

公开(公告)号：US07860258B2

公开(公告)日：2010-12-28

申请号：US11491198

申请日：2006-07-24

Applicant: Takashi Azuma ,  Shin-ichiro Umemura ,  Tatsuya Nagata ,  Hiroshi Fukuda ,  Shuntaro Machida ,  Toshiyuki Mine

Inventor： Takashi Azuma ,  Shin-ichiro Umemura ,  Tatsuya Nagata ,  Hiroshi Fukuda ,  Shuntaro Machida ,  Toshiyuki Mine

IPC: H04R25/00

CPC classification number: B06B1/0292 ,  H04R19/005

Abstract: A transducer for transmitting and receiving ultrasonic waves to a diaphragm-based ultrasonic transducer device using silicon as a base material. An electro-acoustic transducer device which can have a first electrode formed on top of, or inside, a substrate and having a thin film provided on top of the substrate. The device can also have a second electrode formed on top of, or inside, the thin film. A void layer can be provided between the first electrode and the second electrode. A charge-storage layer can be provided between the first electrode and the second electrode. A source electrode and a drain electrode can also be provided for measuring a quantity of electricity stored in the charge-storage layer.

Abstract translation: 一种用于将超声波发送和接收到使用硅作为基材的基于隔膜的超声波换能器装置的换能器。 一种电声换能器装置，其可以具有形成在基板的顶部或内部并且具有设置在基板顶部上的薄膜的第一电极。 该器件还可以具有形成在薄膜的顶部或内部的第二电极。 可以在第一电极和第二电极之间设置空隙层。 可以在第一电极和第二电极之间设置电荷存储层。 还可以提供源电极和漏电极来测量存储在电荷存储层中的电量。

公开(公告)号：US20100256494A1

公开(公告)日：2010-10-07

申请号：US12742468

申请日：2008-09-24

Applicant: Takashi Azuma

Inventor： Takashi Azuma

IPC: A61B8/14

CPC classification number: A61B8/08 ,  A61B8/485 ,  G01S7/52042 ,  G01S7/5205 ,  G01S15/8977

Abstract: An ultrasonic imaging system is provided that, when a deviation occurs between a predicted tissue moving direction and a displacement searching direction, can decrease an error caused by the deviation and thereby improve the accuracy of an elasticity image. An elastographic image in which a deviation in a displacement direction is corrected is created based on an RF displacement relating to an ultrasonic wave propagation direction that is calculated based on a cross-correlation between RF signals, and an ultrasonic wave propagation direction component map of applied pressure that uses a correction angle map determined based on a vector displacement map obtained by performing block matching between two-dimensional video images. According to this method, an image of an elasticity ratio can be acquired without a decrease in accuracy even if a tissue displacement vector deviates from the orientation of a normal line vector of a wave transmitting surface of an ultrasonic probe.

Abstract translation: 提供一种超声波成像系统，当在预测的组织移动方向和位移搜索方向之间发生偏差时，可以减少由偏差引起的误差，从而提高弹性图像的精度。 基于与基于RF信号之间的互相关计算的超声波传播方向的RF位移以及所施加的超声波传播方向分量图，创建其中校正位移方向的偏差的弹性图像 使用基于通过在二维视频图像之间执行块匹配而获得的向量位移图确定的校正角度图的压力。 根据该方法，即使组织位移矢量偏离超声波探头的波浪传送面的法线矢量的取向，也能够不降低精度而获得弹性率的图像​​。