公开(公告)号：WO2015008852A1

公开(公告)日：2015-01-22

申请号：PCT/JP2014/069126

申请日：2014-07-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： OKUMURA, Shigeaki ,  TAKI, Hirofumi ,  SATO, Toru ,  KITA, Aya ,  NAGAE, Kenichi

IPC: G01S15/89 ,  A61B8/06 ,  A61B8/08 ,  G01S7/52

CPC classification number: A61B8/5276 ,  A61B8/06 ,  A61B8/0808 ,  A61B8/14 ,  A61B8/4254 ,  A61B8/4488 ,  A61B8/488 ,  A61B8/5207 ,  A61B8/5223 ,  A61B8/5269 ,  G01S7/52047 ,  G01S7/52066 ,  G01S7/52085 ,  G01S15/8915 ,  G01S15/8981

Abstract: Acquisition accuracy of motion information and image quality of acoustic property distribution deteriorate if unnecessary reflection waves are present besides reflection waves from an object. A Doppler ultrasound diagnosis device includes: multiple conversion elements (002) to each transmit acoustic waves as to a subject (000), receive reflected waves which have reflected within the subject (000), and convert the received reflected waves into time-sequence reception signals; and a processing unit (007) to acquire information of within the subject (000) by adaptive beam forming processing using a plurality of the reception signals. At least part of the multiple conversion elements (002) perform acoustic wave transmission on a predetermined region within the subject (000) multiple times, thereby outputting multiple time-sequence reception signals based on each of the multiple times of acoustic wave transmission. The adaptive beam forming processing includes integration processing of multiple correlation matrices obtained using the multiple time-sequence reception signals.

Abstract translation: 如果除了来自物体的反射波之外存在不需要的反射波，则运动信息的获取精度和声学特性分布的图像质量恶化。 多普勒超声诊断装置包括：对于对象（000）发送声波的多个转换元件（002），接收在被检体内反射的反射波（000），并将接收的反射波转换为时间序列接收 信号; 以及通过使用多个接收信号的自适应波束形成处理来获取被摄体（000）内的信息的处理单元（007）。 多个转换元件（002）的至少一部分多次在对象（000）内的预定区域上进行声波传输，从而基于声波传输的多次来输出多个时间序列接收信号。 自适应波束形成处理包括使用多个时间序列接收信号获得的多个相关矩阵的积分处理。

公开(公告)号：WO2009128389A2

公开(公告)日：2009-10-22

申请号：PCT/JP2009/057299

申请日：2009-04-03

Applicant: CANON KABUSHIKI KAISHA ,  KYOTO UNIVERSITY ,  SOMEDA, Yasuhiro ,  NAGAE, Kenichi ,  OIKAWA, Katsuya ,  SAITO, Keishi ,  TAKAI, Yasuyoshi ,  TAKI, Hirofumi ,  SATO, Toru

Inventor： SOMEDA, Yasuhiro ,  NAGAE, Kenichi ,  OIKAWA, Katsuya ,  SAITO, Keishi ,  TAKAI, Yasuyoshi ,  TAKI, Hirofumi ,  SATO, Toru

IPC: G01S7/52 ,  G01S15/89

CPC classification number: G01S7/52049 ,  G01S15/8952

Abstract: An ultrasound image forming method comprises a first step of receiving a first signal reflected from the object, a second step of obtaining an aberration correction value based on the first signal thus received, a third step of receiving a second signal reflected from the object when a second ultrasound corrected based on the aberration correction value is transmitted to the object, and a fourth step of forming an image from the aberration correction value and the second signal. The center frequency of the second ultrasound is between 0.5 MHz and 20 MHz, the center frequency of the first ultrasound is between 3/16 and 9/20 of the center frequency of the second ultrasound. By this method, an accurate aberration correction value can be obtained and an ultrasound imaging with high resolution can be achieved even if aberrations are large and difficult to correct.

Abstract translation: 超声波图像形成方法包括：接收从对象反射的第一信号的第一步骤，基于如此接收的第一信号获得像差校正值的第二步骤;接收从物体反射的第二信号的第三步骤，当第 基于像差校正值校正的第二超声波被发送到物体，以及第四步骤，根据像差校正值和第二信号形成图像。 第二超声的中心频率在0.5MHz和20MHz之间，第一超声的中心频率在第二超声的中心频率的3/16和9/20之间。 通过该方法，可以获得精确的像差校正值，即使像差大，难以校正也能够实现高分辨率的超声波成像。

公开(公告)号：WO2014125971A1

公开(公告)日：2014-08-21

申请号：PCT/JP2014/052599

申请日：2014-01-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAGAE, Kenichi ,  OKUMURA, Shigeaki ,  TAKI, Hirofumi ,  SATO, Toru

IPC: G01S15/89 ,  A61B8/06

CPC classification number: A61B8/5207 ,  A61B8/06 ,  A61B8/08 ,  A61B8/4494 ,  A61B8/486 ,  A61B8/5223 ,  G01S7/52046 ,  G01S15/8915 ,  G01S15/8981 ,  G10K11/341

Abstract: With unwanted reflected waves, an error might be produced in a movement velocity detection of a measurement object. There is provided a subject information acquisition apparatus including a plurality of transducers configured to transmit an acoustic wave pulse to a subject, receive reflected waves reflected from a plurality of positions in the subject, and convert the reflected waves respectively into time series received signals and a processing unit configured to acquire movement information of the object by using a plurality of the received signals output from the plurality of transducers are provided. The processing unit extracts a plurality of signals each representing a movement component by using the plurality of received signals, performs adaptive signal processing by using the plurality of signals each representing a movement component, and acquires the movement information of the object by using a plurality of output signals obtained by the adaptive signal processing.

Abstract translation: 对于不想要的反射波，可能在测量对象的运动速度检测中产生误差。 提供了一种被摄体信息获取装置，包括多个被配置为向对象发送声波脉冲的换能器，接收从被摄体中的多个位置反射的反射波，并将反射波分别转换为时间序列接收信号，以及 被配置为通过使用从多个换能器输出的多个接收信号来获取对象的移动信息的处理单元。 处理单元通过使用多个接收信号提取各自表示移动分量的信号，通过使用表示移动分量的多个信号来执行自适应信号处理，并且通过使用多个信号来获取对象的移动信息 通过自适应信号处理获得的输出信号。

公开(公告)号：WO2015125419A1

公开(公告)日：2015-08-27

申请号：PCT/JP2015/000441

申请日：2015-02-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： MANJO, Takahiro ,  TAKI, Hirofumi ,  SATO, Toru ,  AKAO, Masahiro ,  NAGAE, Kenichi

IPC: A61B8/04 ,  A61B8/08 ,  A61B5/021 ,  A61B5/022 ,  G01S7/52

CPC classification number: A61B8/481 ,  A61B5/02108 ,  A61B5/022 ,  A61B8/02 ,  A61B8/04 ,  A61B8/0883 ,  A61B8/14 ,  A61B8/461 ,  A61B8/5207 ,  A61B8/5223 ,  G01S7/52039 ,  G01S7/58 ,  G01S15/8915

Abstract: A subject information acquisition apparatus includes a converter configured to receive reflected waves from a contrast medium within a target area inside a subject, and a pressure information acquisition unit configured to acquire pressure information within the target area. In this case, the converter receives reflected waves from a contrast medium in each of a first period and a second period in which a pressure within the target area is different from the first period. The pressure information acquisition unit acquires pressure information in the second period within the target area based on a receive signal based on reflected waves in the first period, a receive signal based on a reflected wave in the second period, and pressure information on a region different from the target area, the pressure information being acquired in the first period.

Abstract translation: 被摄体信息获取装置包括被配置为从对象内的目标区域内的造影剂接收反射波的变换器，以及压力信息获取单元，被配置为获取目标区域内的压力信息。 在这种情况下，转换器在目标区域内的压力与第一周期不同的第一周期和第二周期中的每一个中接收来自造影剂的反射波。 压力信息获取单元基于基于第一周期中的反射波的接收信号，基于第二时段中的反射波的接收信号和不同的区域的压力信息来获取目标区域内的第二时段中的压力信息 在目标区域中，在第一时段中获取压力信息。

公开(公告)号：WO2012105718A1

公开(公告)日：2012-08-09

申请号：PCT/JP2012/052799

申请日：2012-02-01

Applicant: CANON KABUSHIKI KAISHA ,  NAGAE, Kenichi ,  TAKI, Hirofumi ,  SATO, Toru

Inventor： NAGAE, Kenichi ,  TAKI, Hirofumi ,  SATO, Toru

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

CPC classification number: G01H1/00 ,  A61B8/14 ,  A61B8/4488 ,  A61B8/483 ,  A61B8/5207 ,  G01S7/52036 ,  G01S7/52073 ,  G01S15/8977

Abstract: Provided is a signal processing apparatus including: an transducer that performs scanning over the interior of an object and acquires received waveform data of a plurality of scanlines; an intensity screening unit that outputs a high intensity position at which signal intensity calculated from the received waveform data is higher than a first predetermined value; a correlation calculation unit that calculates a correlation value in a constant-width division for received waveform data of a first scanline and of a second scanline having a predetermined correlation with the first scanline; a position extraction unit that extracts, as a candidate position of a singular region, a position which corresponds to a high intensity position and for which the correlation value is lower than a second predetermined value; and an image processor that performs signal processing of generating image data of the object on the basis of the received waveform data.

Abstract translation: 提供一种信号处理装置，包括：换能器，其对物体内部执行扫描并获取多条扫描线的接收波形数据; 强度筛选单元，其输出从接收波形数据计算出的信号强度高于第一预定值的高强度位置; 相关计算单元，计算与第一扫描线具有预定相关性的第一扫描线和第二扫描线的接收波形数据的恒定宽度除法的相关值; 位置提取单元，其提取与高强度位置对应的位置，并且所述相关值低于第二预定值的单个区域的候选位置; 以及图像处理器，其基于接收到的波形数据执行产生对象的图像数据的信号处理。

公开(公告)号：WO2010013792A1

公开(公告)日：2010-02-04

申请号：PCT/JP2009/063623

申请日：2009-07-24

Applicant: CANON KABUSHIKI KAISHA ,  KYOTO UNIVERSITY ,  TAKI, Hirofumi ,  NAGAE, Kenichi ,  SATO, Toru

Inventor： TAKI, Hirofumi ,  NAGAE, Kenichi ,  SATO, Toru

IPC: A61B8/08 ,  G01S7/52 ,  G01S15/89

CPC classification number: G01S7/52036 ,  A61B8/0825 ,  A61B8/0833 ,  G01S7/52073 ,  G01S15/8977

Abstract: A signal processing apparatus scans a beam of acoustic waves into an object to be examined, acquires received waveform data of a plurality of scan lines, and performs signal processing to form a tomographic image of said object to be examined from the received waveform data of the plurality of scan lines. The signal processing apparatus includes a scan line correlation calculation part (009) that calculates correlation values of received waveform data between a first scan line and a second scan line that has a prescribed relationship with the first scan line, for a plurality of positions on the scan lines, and a correlation change position extraction part (010) that extracts, from among the plurality of positions on said scan lines, a position at which the correlation value becomes a value different from a prescribed value as a position at which a unique region can exist.

Abstract translation: 信号处理装置将声波束扫描成待检查对象，获取多条扫描线的接收波形数据，并执行信号处理，以从所接收的波形数据形成待检查对象的断层图像 多条扫描线。 信号处理装置包括：扫描线相关计算部（009），其对于第一扫描线与第一扫描线具有规定关系的第一扫描线和第二扫描线之间的接收波形数据的相关值， 扫描线，以及从所述扫描线上的多个位置提取相关值成为不同于规定值的值的位置的相关变化位置提取部（010），作为所述扫描线的唯一区域 可以存在

公开(公告)号：WO2013069486A1

公开(公告)日：2013-05-16

申请号：PCT/JP2012/077815

申请日：2012-10-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAGAE, Kenichi ,  TAKI, Hirofumi ,  SATO, Toru ,  MORIMOTO, Junichi

IPC: G01S15/89

CPC classification number: G01S15/8984 ,  A61B8/06 ,  A61B8/488 ,  G01S15/8977

Abstract: A subject information acquisition apparatus of the present invention includes a transmission/reception unit (003, 005) including a plurality conversion elements (002) which transmit an elastic wave to the subject (000) and receive a reflected wave that is reflected at each position in the subject (000), a scan line signal acquisition unit (006) which acquires a plurality of signals corresponding to the reflected waves from each position in the subject (000) as scan line signals by using a plurality of reception signals outputted from the conversion elements (002), and a processing unit (007, 008) which acquires moving information of the object by using the plurality of scan line signals. The processing unit (007, 008) acquires the moving information of the object on the basis of a distribution of cross-correlation values on a plane represented by two axes including an axis of time difference and an axis of distance difference by using a plurality of cross-correlation values between scan line signals at different positions.

Abstract translation: 本发明的被摄体信息获取装置包括发射/接收单元（003,005），包括向对象（000）发送弹性波的多个转换元件（002），并接收在每个位置反射的反射波 在对象（000）中，扫描线信号获取单元（006）通过使用从该对象（000）输出的多个接收信号，获取与被摄体（000）中的每个位置相对应的反射波的多个信号作为扫描线信号 转换元件（002）和通过使用多条扫描线信号来获取物体的移动信息的处理单元（007,008）。 处理单元（007,008）基于由包括时间轴的轴和距离轴的轴的两个轴所表示的平面上的互相关值的分布来获取物体的移动信息，通过使用多个 扫描线信号在不同位置的互相关值。