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    • 1. 发明专利
    • 被検体情報取得装置およびその制御方法
    • 主题信息获取装置及其控制方法
    • JP2014212968A
    • 2014-11-17
    • JP2013092668
    • 2013-04-25
    • キヤノン株式会社Canon Inc
    • TAKI HIROFUMISATO TORUOSANAGA KENICHI
    • A61B8/00
    • G01N29/24B06B1/0292B06B1/0629G01N2291/044G01S7/52047G01S15/8977G10K11/348
    • 【課題】FDI法を適用した適応型信号処理を行う場合に、位置による空間分解能低下の影響を抑制する。【解決手段】被検体に音響波を送信し、被検体内で反射した反射波を受信して時系列の受信信号に変換する複数の変換素子を有する探触子と、複数の変換素子から出力される複数の受信信号と、参照信号とを用いて、適応型信号処理を適用した周波数領域干渉計法を行い、被検体内の複数の位置の音響特性を求める処理手段を有し、探触子は、複数の変換素子が配列された方向を第一の方向とし、第一の方向と交差する方向を第二の方向としたときに、第二の方向における端部のほうが、第二の方向における中央部より、音響波の送信音圧が低くなるように構成されている被検体情報取得装置を用いる。【選択図】図3
    • 要解决的问题:为了在执行应用FDI方法的自适应信号处理时,根据位置抑制空间分辨率的劣化所引起的影响。解决方案:主题信息获取装置包括:包括多个 将声波传播到被摄体的转换元件,并将反射波转换成时间序列接收信号; 以及通过应用自适应信号处理,通过使用从多个转换元件输出的多个接收信号和参考信号来执行频域干涉测量的处理装置,并且确定被摄体中的多个位置的声学特性。 探针被构造为使得当布置多个转换元件的方向是第一方向并且与第一方向相交的方向是第二方向时,第二方向上的端部具有较低的透射声压 声波比第二方向的中音部分。
    • 2. 发明专利
    • Ultrasonic diagnostic apparatus and control method of the same
    • 超声波诊断装置及其控制方法
    • JP2013176697A
    • 2013-09-09
    • JP2013133365
    • 2013-06-26
    • Canon Incキヤノン株式会社
    • TAKI HIROFUMISATO TORUSAKAMOTO TAKUYAKIMURA TOMOKIOSANAGA KENICHI
    • A61B8/00
    • PROBLEM TO BE SOLVED: To provide a biological information processing device and biological information processing method, capable of obtaining more drastically improved spatial resolution compared with a conventional manner by accurately planarizing a frequency spectrum of a reception signal.SOLUTION: A biological information processing method includes: a process for receiving a reflection echo of a pulse wave radiated to a living body and acquiring a reception signal corresponding to the pulse wave; a process for synthesizing multiple reference signals at a predetermined interpolation rate and generating a reference signal for calculation; a process for performing whitening processing with respect to a reception signal by using a reference signal for calculation; a process for calculating a power distribution concerning a depth direction inside a living body with respect to the reception signal after performing the whitening processing by applying a frequency area interferometer technique and a frequency average method; and a process for determining a power distribution to be used for the acquisition of information inside the living body, based on multiple power distributions respectively calculated by changing an interpolation rate.
    • 要解决的问题:提供一种生物信息处理装置和生物信息处理方法,其能够通过精确地平坦化接收信号的频谱而获得比传统方式更大幅度地改善的空间分辨率。生物信息处理方法包括 :接收辐射到生物体的脉波的反射回波并获取与脉波相对应的接收信号的处理; 用于以预定的内插速率合成多个参考信号并产生用于计算的参考信号的处理; 用于通过使用用于计算的参考信号来执行关于接收信号的白化处理的处理; 一种用于通过应用频域干涉仪技术和频率平均方法,在执行白化处理之后相对于接收信号计算生物体内的深度方向的功率分布的处理; 以及基于通过改变内插率分别计算的多个功率分布来确定用于获取生物体内的信息的功率分布的处理。
    • 3. 发明专利
    • Apparatus and method for acquiring object information
    • 获取对象信息的装置和方法
    • JP2012235831A
    • 2012-12-06
    • JP2011105318
    • 2011-05-10
    • Canon Incキヤノン株式会社
    • OSANAGA KENICHISATO TORU
    • A61B8/00G01S15/89
    • G01S7/52017G01N21/1702G01S7/52047
    • PROBLEM TO BE SOLVED: To provide a technique for acquiring an image with high spatial resolution while suppressing a scale of signal processing in an object information acquiring apparatus for performing adaptive signal processing by receiving an ultrasonic wave signal.SOLUTION: The object information acquiring apparatus includes: a plurality of conversion elements which receive acoustic waves emitted from the object and convert the acoustic waves into electrical signals; a correlation calculator which calculates correlation data by using the plurality of electrical signals output from the plurality of conversion elements; an average correlation calculator which calculates an average correlation matrix by extracting a plurality of submatrices from the correlation data and averaging the submatrices; and an adaptive signal processor which generates power distribution by performing adaptive signal processing by using the average correlation matrix and calculating the power of each target position, wherein the correlation calculator calculates the correlation data by obtaining correlation of input signals that are separated by at least one or more input signal among the input signals.
    • 要解决的问题:提供一种用于在通过接收超声波信号来抑制用于执行自适应信号处理的对象信息获取装置中的信号处理规模的同时获取高空间分辨率的图像的技术。 对象信息获取装置包括:多个转换元件,其接收从对象发射的声波并将声波转换成电信号; 相关计算器,通过使用从多个转换元件输出的多个电信号来计算相关数据; 平均相关计算器,通过从所述相关数据中提取多个子矩阵并对所述子矩阵进行平均来计算平均相关矩阵; 以及自适应信号处理器,其通过使用所述平均相关矩阵并计算每个目标位置的功率来执行自适应信号处理来生成功率分配,其中所述相关计算器通过获得由至少一个分离的输入信号的相关性来计算相关数据 或更多的输入信号。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Subject information obtaining apparatus, subject information obtaining method, and program
    • 主题信息获取装置,主题信息获取方法和程序
    • JP2012217624A
    • 2012-11-12
    • JP2011086511
    • 2011-04-08
    • Canon Incキヤノン株式会社
    • TAKI HIROFUMISATO TORUOSANAGA KENICHI
    • A61B8/00
    • A61B8/085A61B8/0858A61B8/0891A61B8/486A61B8/5207G01S7/52047G01S15/8977
    • PROBLEM TO BE SOLVED: To solve the problem that continuity between adjacent scan lines is scarce in the processing by executing an FDI method and adaptive signal processing.SOLUTION: The subject information obtaining apparatus includes: a plurality of conversion elements for receiving an elastic wave propagated from within a subject and converting the received elastic wave into a plurality of electric signals; an FDI adaptive processing means for executing the frequency domain interferometry method and adaptive signal processing using the plurality of electric signals and obtaining power intensity distribution by calculating the power intensity at each position on a plurality of scan lines; and a correction means for executing a correction process to reduce variation in power intensity between the adjacent scan lines in a direction intersecting the scan lines.
    • 要解决的问题:为了解决通过执行FDI方法和自适应信号处理在处理中相邻扫描线之间的连续性很少的问题。 主题信息获取装置包括:多个转换元件,用于接收从被摄体内传播的弹性波,并将接收的弹性波转换为多个电信号; FDI自适应处理装置,用于执行频域干涉测量方法和使用多个电信号的自适应信号处理,并且通过计算多个扫描线上的每个位置处的功率强度来获得功率强度分布; 以及校正装置,用于执行校正处理,以减少在与扫描线相交的方向上的相邻扫描线之间的功率强度的变化。 版权所有(C)2013,JPO&INPIT
    • 5. 发明专利
    • Signal processing apparatus
    • 信号处理装置
    • JP2012161411A
    • 2012-08-30
    • JP2011022776
    • 2011-02-04
    • Canon Incキヤノン株式会社
    • OSANAGA KENICHITAKI HIROFUMISATO TORU
    • A61B8/00
    • G01H1/00A61B8/14A61B8/4488A61B8/483A61B8/5207G01S7/52036G01S7/52073G01S15/8977
    • PROBLEM TO BE SOLVED: To provide a technology that allows detecting, stably and with good precision, positions at which a singular region is likely to be present, for instance a high-reflection body, in particular a small high-reflection body, on the basis of received waveform data of elastic waves.SOLUTION: A signal processing apparatus includes: an transducer that performs scanning over the interior of an object and acquires received waveform data of a plurality of scanlines; a signal 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-between-scanlines 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 correlation variation 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 a tomographic image of the object on the basis of the received waveform data.
    • 要解决的问题:为了提供允许以可能存在单个区域的位置的稳定和高精度的位置的技术,例如高反射体,特别是小的高反射体 ,基于弹性波的接收波形数据。 解决方案:信号处理设备包括: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; 信号强度筛选单元,其输出从接收到的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; 扫描线计算单元之间的相关性计算单元,用于计算第一扫描线的接收波形数据和与第一扫描线具有预定相关性的第二扫描线的恒定宽度除法中的相关值; 相关变化位置提取单元,其提取与高强度位置相对应的位置,并且相关值低于第二预定值,作为奇异区域的候选位置; 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断层图像的信号处理。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Biological information processing apparatus and biological information processing method
    • 生物信息处理设备和生物信息处理方法
    • JP2010183979A
    • 2010-08-26
    • JP2009029005
    • 2009-02-10
    • Canon IncKyoto Univキヤノン株式会社国立大学法人京都大学
    • TAKI HIROFUMISATO TORUSAKAMOTO TAKUYAKIMURA TOMOKIOSANAGA KENICHI
    • A61B8/00
    • G01S7/52047G01S15/8977
    • PROBLEM TO BE SOLVED: To provide a biological information processing apparatus and biological information processing method which are capable of significantly improving spatial resolution by accurately flattening frequency spectra of received signals. SOLUTION: The biological information processing method includes the steps of: receiving reflection echo of pulse waves applied to a living body and acquiring received signals corresponding to the pulse waves; creating reference signals for operation by composing a plurality of reference signals at a prescribed interpolation rate; whitening the received signals by using the reference signals for operation; computing the power distribution in the depth direction within the living body by applying a frequency area interferometer method and a frequency averaging method to the whitened received signal; and determining the power distribution to be used for acquiring the information within the living body based on a plurality of power distributions respectively computed by changing the interpolation rate. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供能够通过精确地平坦化接收信号的频谱来显着提高空间分辨率的生物信息处理装置和生物信息处理方法。 生物信息处理方法包括以下步骤:接收施加到生物体上的脉波的反射回波并获取与脉波相对应的接收信号; 通过以规定的插补率组合多个参考信号来创建用于操作的参考信号; 通过使用参考信号对接收到的信号进行白化操作; 通过对白化的接收信号应用频域干涉仪法和频率平均法,计算生物体内深度方向的功率分布; 以及基于通过改变插值率分别计算的多个功率分布来确定用于获取生物体内的信息的功率分布。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Image forming method using ultrasound and aberration correction method
    • 使用超声和去噪校正方法的图像形成方法
    • JP2009254462A
    • 2009-11-05
    • JP2008105039
    • 2008-04-14
    • Canon IncKyoto Univキヤノン株式会社国立大学法人京都大学
    • TAKI HIROFUMISATO TORUSOMETA YASUHIROOSANAGA KENICHIOIKAWA KATSUYASAITO KEISHITAKAI YASUYOSHI
    • A61B8/00
    • G01S7/52049G01S15/8952
    • PROBLEM TO BE SOLVED: To provide an ultrasonic image with high resolution for obtaining an accurate aberration correction value in the case that the aberration is large and the aberration correction is difficult. SOLUTION: This method for forming an image by using a signal reflected from an object during transmitting ultrasound to the object comprises a first step of receiving a first signal reflected from the object when the first ultrasound is transmitted to the object, a second step of obtaining an aberration correction value based on the received first signal, 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. It is characterized in that the frequency of the second ultrasound is between 0.5 MHz and 20 MHz, and the center frequency of the first ultrasound is between 3/16 and 9/20 of the center frequency of the second ultrasound. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供高分辨率的超声波图像,以便在像差较大并且像差校正困难的情况下获得精确的像差校正值。 解决方案:通过使用从对象反射的信号在向对象发送超声波期间形成图像的方法包括:第一步骤,当第一超声波被发送到对象时,接收从对象反射的第一信号,第二步骤 基于接收到的第一信号获得像差校正值的步骤;当基于像差校正值校正的第二超声波被发送到对象时,接收从对象反射的第二信号的第三步骤;以及第四步骤, 来自像差校正值和第二信号的图像。 其特征在于,第二超声的频率在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。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • 被検体情報取得装置、被検体情報取得方法、及びプログラム
    • 主题信息获取设备,主题信息获取方法和程序
    • JP2014223261A
    • 2014-12-04
    • JP2013106485
    • 2013-05-20
    • キヤノン株式会社Canon Inc
    • TAKI HIROFUMISATO TORUOSANAGA KENICHI
    • A61B8/00
    • G01S15/02A61B8/14A61B8/4483A61B8/461A61B8/5207G01S7/52G01S7/52047G01S15/8918G01S15/8977
    • 【課題】被検体内へ送信された音響波は、その到達する位置により波形が変化する。そのため、FDI法を適用した適応型信号処理による高空間分解能化の効果を十分得られない場合があった。【解決手段】本発明の被検体情報取得装置は、被検体に音響波を送信し、被検体内で反射した反射波を受信して時系列の受信信号に夫々変換する複数の変換素子と、前記複数の変換素子から出力される複数の前記受信信号と参照信号とを用いて、適応型信号処理を適用した周波数領域干渉計法を行い、被検体内の複数の位置の音響特性を求める処理手段と、を有し、前記処理手段は、前記被検体内の位置に応じ少なくとも1回は参照信号を切り替えて前記周波数領域干渉計法を行い、被検体内の複数の位置の音響特性を求める。【選択図】図3
    • 要解决的问题:为了解决由于发送到被摄体的声波的波形是不能获得其中应用了FDI(频域干涉测量)方法的具有自适应型信号处理的高空间分辨率的充分效果的问题, 由于声波到达的位置而改变。解决方案:主题信息获取装置包括:多个转换元件,其将声波传播到被摄体并且接收在对象中反射的反射波,以分别将反射波转换成时间顺序 接收信号; 以及处理装置,其通过使用从多个转换元件输出的多个接收信号和参考信号来执行自适应型信号处理所应用的频域干涉测量,以获得被摄体中的多个位置的声学特性。 处理装置通过根据对象中的位置至少一次切换参考信号来执行频域干涉测量,以获得被摄体中的多个位置的声学特性。
    • 10. 发明专利
    • Subject information acquisition device, subject information acquisition method, and program
    • 主题信息获取设备,主题信息获取方法和程序
    • JP2014176607A
    • 2014-09-25
    • JP2013238314
    • 2013-11-18
    • Canon Incキヤノン株式会社
    • OKUMURA SHIGEAKITAKI HIROFUMISATO TORUOSANAGA KENICHI
    • A61B8/06
    • A61B8/5207A61B8/06A61B8/08A61B8/4494A61B8/486A61B8/5223G01S7/52046G01S15/8915G01S15/8981G10K11/341
    • PROBLEM TO BE SOLVED: To provide a device which can highly accurately acquire movement information of a measurement target even when there is an unnecessary reflection wave that may cause a measurement error in detection of a movement speed of the measurement target.SOLUTION: A subject information acquisition device comprises: a plurality of conversion elements 002 which transmit sound wave pulses to a subject to receive reflection waves that are reflected at a plurality of positions in the subject, and convert the respective reflection waves into time series of reception signals; and a processing unit which acquires movement information of a target in the subject by using the plurality of reception signals output from the plurality of conversion elements. The processing unit extracts a plurality of signals indicating movement components by using the plurality of reception signals, performs adaptive signal processing by using a plurality of signals indicating the movement components, and acquires movement information of the target by using a plurality of output signals after the adaptive signal processing.
    • 要解决的问题:提供即使当存在可能导致测量目标的移动速度的测量误差的不必要的反射波时,也能够高精度地获取测量对象的运动信息的装置。解决方案:主题信息 采集装置包括:多个转换元件002,其将声波脉冲发送到对象以接收在被摄体中的多个位置反射的反射波,并将各个反射波转换为接收信号的时间序列; 以及处理单元,其通过使用从多个转换元件输出的多个接收信号来获取被摄体中的目标的移动信息。 处理单元通过使用多个接收信号提取指示移动分量的多个信号,通过使用表示移动分量的多个信号进行自适应信号处理,并通过使用多个输出信号之后的多个输出信号来获取目标的移动信息 自适应信号处理。