公开(公告)号：US20070293764A1

公开(公告)日：2007-12-20

申请号：US11882930

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.

Abstract translation: 提供能够通过超声波脉冲的一次传输，在超声波传播方向上产生包括宽范围宽的宽波长的发射束的超声波检查仪。 针对构成传输孔径的每个元素计算与设置在超声波传播方向上的多个焦点的传输脉冲波的焦距相对应的多个传输延迟时间值的加权平均值，并将其用作延迟 时间。 波实际上以加权平均值作为延迟时间发送。 作为用于获得延迟时间平均值的权重，首先，选择根据每个传输焦距的传输有效孔径宽度，并且计算实现宽度的发射孔径的方向上的权重，并将其用于焦距 方向。 结果，传输的波的波前的曲率接近发射孔的中心部分的短焦距的波前的曲率，并且接近于长焦距的波前的曲率 在周边部分。 因此，形成非圆柱形波前。 因此，通过超声脉冲的一次发送，可以生成包括在超声波传播方向上的宽范围内具有均匀宽度的相对窄的主波束的发送波束。

公开(公告)号：US20080027318A1

公开(公告)日：2008-01-31

申请号：US11719770

申请日：2005-07-15

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

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

IPC: A61B8/00

CPC classification number: G01S15/8993 ,  A61B8/483 ,  G01S7/5202 ,  G01S7/52046 ,  G01S7/5209 ,  G01S7/52095

Abstract: An ultrasonographic technique capable of forming a transmission beam enabling multi-beam transmission/reception of identical transmission sensitivity. An ultrasonographic device for imaging inside of an examinee includes a transmitter for transmitting an ultrasonic pulse signal from an ultrasonic element array to the examinee, and a receiver for receiving the ultrasonic pulse reflected from the examinee. The transmitter transmits an ultrasonic pulse signal having a plurality of peaks of substantially equal transmission intensity in the azimuth direction and a trace in the depth direction of each peak as a substantially straight line, from a transmission opening of the ultrasonic element array to the examinee.

Abstract translation: 一种能够形成能够实现相同传输灵敏度的多波束发射/接收的传输波束的超声波技术。 用于在受检者内部成像的超声波诊断装置包括用于从超声波元件阵列向受检者发送超声波脉冲信号的发射器，以及用于接收从受检者反射的超声波脉冲的接收器。 发射机从超声波元件阵列的传输开口向受检者发送具有在方位方向上具有基本相等的传输强度的多个峰值和超过每个峰值深度方向的迹线作为基本上直线的超声波脉冲信号。

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：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：US08535229B2

公开(公告)日：2013-09-17

申请号：US11719770

申请日：2005-07-15

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

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

IPC: A61B8/00

CPC classification number: G01S15/8993 ,  A61B8/483 ,  G01S7/5202 ,  G01S7/52046 ,  G01S7/5209 ,  G01S7/52095

Abstract: An ultrasonographic technique capable of forming a transmission beam enabling multi-beam transmission/reception of identical transmission sensitivity. An ultrasonographic device for imaging inside of an examinee includes a transmitter for transmitting an ultrasonic pulse signal from an ultrasonic element array to the examinee, and a receiver for receiving the ultrasonic pulse reflected from the examinee. The transmitter transmits an ultrasonic pulse signal having a plurality of peaks of substantially equal transmission intensity in the azimuth direction and a trace in the depth direction of each peak as a substantially straight line, from a transmission opening of the ultrasonic element array to the examinee.

Abstract translation: 一种能够形成能够实现相同传输灵敏度的多波束发射/接收的传输波束的超声波技术。 用于在受检者内部成像的超声波诊断装置包括用于从超声波元件阵列向受检者发送超声波脉冲信号的发射器，以及用于接收从受检者反射的超声波脉冲的接收器。 发射机从超声波元件阵列的传输开口向受检者发送具有在方位方向上具有基本相等的传输强度的多个峰值和超过每个峰值深度方向的迹线作为基本上直线的超声波脉冲信号。

公开(公告)号：US07785260B2

公开(公告)日：2010-08-31

申请号：US10482789

申请日：2002-06-05

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: 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. The curvature of a transmitted wave front is close to a short focal length in the center portion of the transmit aperture and is close to a long focal length in the peripheral portion. 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.

Abstract translation: 一种能够通过超声波脉冲的一次发送，能够在超声波传播方向上产生宽波长宽泛的主波束的发射束的超声波检查仪。 针对构成传输孔径的每个元素计算与设置在超声波传播方向上的多个焦点的传输脉冲波的焦距相对应的多个传输延迟时间值的加权平均值，并将其用作延迟 时间。 透射波前的曲率在发射孔的中心部分接近短焦距，并且在周边部分中接近长焦距。 因此，可以产生包括在超声波传播方向上在宽范围内具有均匀宽度的相对窄的主波束的发射波束。

公开(公告)号：US08167806B2

公开(公告)日：2012-05-01

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: An ultrasonograph capable of generating a transmission beam having a uniform width over a wide range in an ultrasonic wave propagation direction is provided. A weighted mean value of a plurality of transmission delay time values corresponding to focal lengths of transmission pulse waves set in the ultrasonic wave propagation direction is calculated for each element constituting a transmission aperture and used as the delay time for the element when waves are transmitted. As the weight used for obtaining the weighted mean value, 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.

Abstract translation: 提供能够在超声波传播方向上在宽范围内产生均匀宽度的透射光束的超声波检查仪。 对于构成传输孔径的每个元件计算与设置在超声波传播方向上的传输脉冲波的焦距对应的多个传输延迟时间值的加权平均值，并将其用作当传输波时的元件的延迟时间。 作为用于获得加权平均值的重量，选择根据每个透射焦距的透射有效孔径宽度，并且计算实现宽度的透射孔的方向上的重量，并在焦距方向上使用。

公开(公告)号：US07473225B2

公开(公告)日：2009-01-06

申请号：US10618750

申请日：2003-07-15

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

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

IPC: A61B8/00

CPC classification number: G01S7/52049 ,  G01S7/52026 ,  G01S15/899 ,  G10K11/346

Abstract: There are provided an ultrasonic imaging system and method which can correct a phase shift effect to image a real change in acoustic impedance in a living body.An ultrasonic probe transmits an ultrasonic beam to an object to receive an echo. A transmit beamformer transmits a transmit signal via transmit/receive SWs to the probe in delay time matched with a transmit focal point according to the signal under the control of a control system. An ultrasonic signal returned from the object to the probe is converted to an electric signal by the probe to be transmitted via the transmit/receive SWs to a complex receive beamformer. The complex receive beamformer performs dynamic focus adjusting delay time according to reception timing. A phase shift correction part uses the output of the complex beamformer outputting beams of a real part and an imaginary part to correct phase shift. due to frequency-dependent attenuation, correct phase shift in the lateral direction of the beam, or correct both. After phase shift correction, an acoustic impedance change amount operation part obtains a derivative about the space position of acoustic impedance. The signal subject to filtering processing is image displayed via a scan converter on a display part.

Abstract translation: 提供了一种超声波成像系统和方法，其可以校正相移效应以对活体中的声阻抗的真实变化进行成像。 超声探头将超声波束发送到物体以接收回波。 发射波束形成器根据在控制系统的控制下的信号，以与发射焦点相匹配的延迟时间，经由发射/接收SW向发射器发射发射信号。 从物体返回到探头的超声波信号被探头转换成电信号，以通过发射/接收SW发送到复接收波束形成器。 复接收波束形成器根据接收定时执行动态聚焦调整延迟时间。 相移校正部分使用输出实部和虚部的波束形成器的输出来校正相移。 由于频率依赖的衰减，在横向的方向上的正确相移，或者纠正两者。 在相移校正之后，声阻抗变化量操作部分获得关于声阻抗的空间位置的导数。 经过滤波处理的信号是通过显示部分上的扫描转换器显示的图像。

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：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。