Patents by Inventor Tetsuya Kawagishi

Tetsuya Kawagishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150094584
    Abstract: An ultrasound diagnosis apparatus includes a calculating unit, an obtaining unit, a determining unit, and a controlling unit. By using a plurality of pieces of three-dimensional ultrasound image data in a time series corresponding to a three-dimensional region including a myocardium of a subject, the calculating unit calculates first movement information indicating a movement of the myocardium by tracking a movement of a region of interest that corresponds to the myocardium and that is set in each of the plurality of pieces of three-dimensional image data. The obtaining unit obtains direction information indicating a direction of a myocardial fiber in the myocardium. The determining unit determines second movement information indicating a movement of the myocardium with respect to the direction of the myocardial fiber, on the basis of the first movement information and the direction information. The controlling unit causes a display unit to display the second movement information.
    Type: Application
    Filed: September 19, 2014
    Publication date: April 2, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yasuhiko ABE, Tetsuya KAWAGISHI
  • Publication number: 20150087985
    Abstract: An ultrasound diagnostic apparatus according to an embodiment includes a transmitter/receiver, an adder/subtractor and an image generating unit. The transmitter/receiver performs a first set of ultrasound transmission/reception and a second set of ultrasound transmission/reception, on a same scanning line of an imaging region of a subject administered with a contrast agent, for a plurality of sets, to output reflected wave data for the plurality of the sets, the first set of the ultrasound transmission/reception performing amplitude-modulated or amplitude- and phase-modulated ultrasound transmission transmitted a plurality of times and receiving reflected waves, and the second set of the ultrasound transmission/reception being transmission/reception whose phase modulation being different from phase modulation of the first set of the ultrasound transmission/reception. The adder/subtractor adds or subtracts the reflected wave data for the plurality of the sets.
    Type: Application
    Filed: December 2, 2014
    Publication date: March 26, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Hiroki YOSHIARA, Kuramitsu NISHIHARA, Akihiro KAKEE, Tetsuya KAWAGISHI, Makoto HIRAMA
  • Publication number: 20150087980
    Abstract: An ultrasound diagnosis apparatus according to an embodiment includes an obtaining unit, an image generating unit, and a controlling unit. The obtaining unit obtains setting information in which a plurality of types of ultrasound image data are set as display-purpose image data and in which a percentage of a time period to display the display-purpose image data is set for each of the plurality of types. The image generating unit generates, along a time series, each of the plurality of types of ultrasound image data set in the setting information. The controlling unit exercises control so that the plurality of types of ultrasound image data generated by the image generating unit are stored into a storage unit and exercises control so that the display-purpose image data is displayed on a display unit according to the percentage set in the setting information for each of the types.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Cong YAO, Shintaro NIWA, Tetsuya KAWAGISHI, Yoshitaka MINE
  • Publication number: 20150080730
    Abstract: According to one embodiment, an ultrasonic diagnostic apparatus includes an ultrasonic probe, transmission unit transmitting a first ultrasonic wave for generating a shear wave in an object to a first region and a second ultrasonic wave to a second region, reception unit generating a reception signal based on the second ultrasonic wave, displacement amount calculation unit calculating a displacement amount of a tissue accompanying propagation of the shear wave to the second region by using the reception signal, arrival time decision unit deciding an arrival time when the shear wave has arrived at each position in the second region, based on a temporal change in the displacement amount concerning the each position, and image generation unit generating based on the arrival time and predetermined pixel values corresponding to the arrival times, a shear wave arrival time image with the pixel values being assigned corresponding to the arrival times.
    Type: Application
    Filed: April 4, 2014
    Publication date: March 19, 2015
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yuko KANAYAMA, Tetsuya KAWAGISHI
  • Publication number: 20150018677
    Abstract: An ultrasound diagnosis apparatus includes a transmitter/receiver, a signal processor, and an image generator. The transmitter/receiver transmits, at least once in each scanning line, a first ultrasound pulse and a second ultrasound pulse whose amplitude corresponds to amplitude of the first ultrasound pulse modulated at a given ratio and acquires a received-signal group consisting of multiple received signals. The signal processor acquires, on the basis of a coefficient that reduces the energy of a first composite signal that is obtained by combining, in accordance with the given ratio, multiple received signals contained in the first received signal group acquired by the transmitter/receiver, a second composite signal by combining multiple received signals contained in a second received signal group that is acquired by the transmitter/receiver and that is different from the first received signal group. The image generator generates an ultrasound image based on the second composite signal.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 15, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Hiroki YOSHIARA, Makoto Hirama, Tetsuya Yoshida, Akihiro Kakee, Tetsuya Kawagishi, Hiroyuki Shikata
  • Patent number: 8932225
    Abstract: An ultrasonic diagnostic apparatus comprises a first reception echo obtaining unit, a second reception echo obtaining unit, a reception echo combining unit, and an image generating unit. The first reception echo obtaining unit transmits a plurality of ultrasonic pulses having frequency spectra different from one another to an object, and obtains each of reception echoes corresponding to the plurality of ultrasonic pulses. The second reception echo obtaining unit transmits an ultrasonic pulse having the same frequency component characteristics as an combined pulse obtained by combining the plurality of ultrasonic pulses, and to obtain an reception echo. The reception echo combining unit combines the reception echoes obtained by the first reception echo obtaining unit and the reception echo obtained by the second reception echo obtaining unit to generate a combined signal. The image generating unit generates an image of echoes reflected from the object on the basis of the combined signal.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: January 13, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tetsuya Kawagishi, Hiroyuki Ohuchi, Takeshi Sato, Makoto Hirama, Tomohisa Imamura
  • Publication number: 20150005633
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes a setting unit, a transmitter, a signal processing unit, and an image generating unit. The setting unit sets a plurality of ROIs within a scanning region. The transmitter transmits an ultrasonic wave for displacement generation on a plurality of transmission conditions corresponding to the respective ROIs from an ultrasonic probe and transmits an ultrasonic wave for observation that observes a displacement generated by each transmission of the ultrasonic wave for displacement generation, from the ultrasonic probe a plurality of times. The signal processing unit analyzes a plurality of pieces of reflected wave data, acquires a plurality of pieces of displacement information, and calculates distribution information on the respective transmission conditions. The image generating unit generates a plurality of pieces of image data based on the pieces of distribution information and composite image data by composing the pieces of image data.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 1, 2015
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yuko KANAYAMA, Akihiro Kakee, Tetsuya Kawagishi
  • Patent number: 8888703
    Abstract: In time phases except a first time phase, a contour tracking part tracks the position of a region of interest based on image data acquired in each of the time phases. A re-tracking part receives correction of the position of the region of interest in a second time phase, and obtains the position of the corrected region of interest in and after the second time phase based on the image data acquired in and after the second time phase. From position information of the region of interest in and before the second time phase and position information of the corrected region of interest in and after the second time phase, a position calculator obtains position information of the region of interest in all the time phases. A computing part obtains motion information of a tissue within the region of interest based on the position information of the region of interest.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: November 18, 2014
    Assignees: Toshiba Medical Systems Corporation, Kansai Electric Power Company, Inc.
    Inventors: Yasuhiko Abe, Tetsuya Kawagishi, Katsuhisa Ishii
  • Publication number: 20140100461
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment comprises a data acquisition unit configured to execute ultrasonic scanning for a tissue region throughout a predetermined period and acquire a plurality of image data respectively corresponding to phases in the predetermined period; a positional information acquisition unit configured to acquire positional information of a region of interest in the tissue region at least one phase in the period by executing tracking processing using at least part of the plurality of image data; a shape information calculation unit configured to calculate shape information corresponding to the region of interest at least one phase in the period by using positional information of the region of interest at the at least one phase; and an output unit configured to output the shape information at the at least one phase.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 10, 2014
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yasuhiko Abe, Hiroyuki Ohuchi, Tetsuya Kawagishi
  • Patent number: 8647274
    Abstract: According to one embodiment, an ultrasound diagnosis apparatus includes a motion information generating unit and a control unit. The motion information generating unit generates first motion information on cardiac wall motion of at least one of a left ventricle and a left atrium and second motion information on cardiac wall motion of at least one of a right ventricle and a right atrium, on the basis of a first volume data group and a second volume data group; generates first correction information and second correction information by correcting the first motion information and the second motion information such that the first motion information and the second motion information are substantially synchronized with each other, and generates a motion information image in which the first correction information and the second correction information are arranged along the time axis. The control unit controls to display the motion image information.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: February 11, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yasuhiko Abe, Tetsuya Kawagishi
  • Patent number: 8565504
    Abstract: Three slices, i.e., Basal, Mid, and Apical slices, which correspond to clinically useful ASE segmentation are designated, and the positions of the three slices are tracked through at least one cardiac cycle by performing three-dimensional speckle tracking in the remaining time phases. Three C-mode projection images concerning the tracked positions are reconstructed. In addition, arbitrary myocardial wall motion parameters at the tracked positions are computed and displayed upon being superimposed on C-mode images or projected/displayed on a polar map. As a C-mode projection image method, one of the following techniques can be used detecting and projecting only movement components perpendicular to slices determined in an initial time phase, detecting and projecting average movement components of the respective walls, and tracking and projecting each myocardial position. The obtained C-mode images are simultaneously displayed together with markers indicating the positions of long-axis images and C-mode images.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: October 22, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporationq
    Inventors: Yasuhiko Abe, Tetsuya Kawagishi
  • Patent number: 8540636
    Abstract: In general, according to one embodiment, an ultrasonic diagnostic apparatus includes an image generating unit configured to generate medical images from a multislice which covers an area including the heart of an object. Each slice is almost perpendicular to the long axis of the heart. Each medical image is a short-axis image of the heart. A series of medical images captured at different times correspond to each slice. The embodiment generates a polar map associated with myocardial motion indices from a plurality of medical images. A polar map is segmented into segments. The embodiment calculates the average value of motion indices for each segment. The utility of an average value depends on the range covered by each segment. This embodiment matches the boundary of a segment with the position of a vein. This prevents a deterioration in the utility of average values due to the influences of veins.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: September 24, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tetsuya Kawagishi, Susumu Uchiyama, Shunsuke Satoh, Shinichi Hashimoto, Yasuhiko Abe, Hiroyuki Ohuchi
  • Patent number: 8526696
    Abstract: Based on medical image data acquired in each time phase included in a one-cycle interval, first tracking part tracks the position of a first region of interest set in a first time phase in each time phase and tracks the position of a second region of interest set in a second time phase in each time phase. Based on position information of the first region of interest and the second region of interest in each time phase, position correction part obtains position information of a region of interest in each time phase so that it passes through the position of the first region of interest in the first time phase and the position of the second region of interest in the second time phase. Motion-information calculator obtains motion information of a tissue based on the obtained position information.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: September 3, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Yasuhiko Abe, Tetsuya Kawagishi
  • Patent number: 8454514
    Abstract: An ultrasound diagnostic apparatus 1 comprises an ultrasonic probe 2 for transmitting the ultrasound while three-dimensionally scanning, and receiving ultrasound reflected from biological tissue, an image processor 5 (and a signal processor 4) for generating image data for an MPR image based on results received thereof, an information memory 6 for storing cross-sectional-position information D showing a cross-section of this MPR image, a display part 81, and a controller 9. The image processor 5 generates image data for the new MPR image for the relevant cross-sectional position, based on the cross-sectional position shown in the cross-sectional-position information D1 obtained when the MPR image was obtained in the past and the received results obtained by the new three-dimensional scan performed with the ultrasonic probe 2. The controller 9 causes the display part 81 to display the new MPR image.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: June 4, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tetsuya Kawagishi, Yasuhiko Abe, Shinichi Hashimoto, Muneki Kataguchi
  • Patent number: 8403852
    Abstract: A combined wave having a plurality of frequencies and phases is transmitted to each of a plurality of scan lines in at least three rates by alternately inverting a phase by 180°. An obtained echo signal is received for each rate. The echo signals are added by using arbitrary weighting coefficients so that 0 is obtained by using the polarity as the sign. Ultrasonic image data is generated by using a difference tone component contained in the added echo signal.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: March 26, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tomohisa Imamura, Tetsuya Kawagishi
  • Patent number: 8372010
    Abstract: There is provided an ultrasonic wave diagnosis instrument. The ultrasonic wave Doppler diagnosis instrument transmits an ultrasonic continuous wave in a range direction and receives a reflective wave of the ultrasonic continuous wave. The ultrasonic wave Doppler diagnosis instrument includes: a modulation unit that subjects the ultrasonic continuous wave to frequency modulation such that a phase is varied in accordance with the distance of the range direction; a demodulation unit that demodulates the reflective wave for each range of the range direction while interlocking with the frequency modulation, and generates a reception signal in the range in a separated state; and a presentation unit that presents information by using a signal of a Doppler component based on the reception signal.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: February 12, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tatsuro Baba, Yasuo Miyajima, Takeshi Sato, Tetsuya Kawagishi, Yasutsugu Seo, Yoshitaka Mine
  • Patent number: 8343052
    Abstract: An ultrasonic diagnostic apparatus capable of measuring a three-dimensional motion of a biological tissue in a short time. An image processor creates volume data based on image data of a B-mode image of a biological tissue and creates image data of a series of tomographic images in time series for the respective two or more sectional positions based on the volume data. A controller displays one tomographic image for each sectional position on a display part. A user operates an operation part to designate a measurement image region on the displayed tomographic image. A displacement calculating part calculates a displacement in time series of the designated measurement image region for each sectional position. A motion information calculating part calculates motion information of the biological tissue based on the displacement of the measurement image region calculated for each sectional position.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: January 1, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tetsuya Kawagishi, Yasuhiko Abe
  • Patent number: 8224049
    Abstract: A contour specifying part receives volume data representing a subject acquired by transmission of ultrasonic waves to the subject, and specifies a 3-dimensional contour of a myocardium based on the volume data. A forming part sets a reference point on the contour of the myocardium, and forms an image generation plane including a plane substantially orthogonal to the contour of the myocardium at the reference point. An image generator generates image data on the image generation plane based on the volume data. A display controller controls a display to display an image based on the image data.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: July 17, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Hiroyuki Ohuchi, Tetsuya Kawagishi, Yasuhiko Abe, Masahide Nishiura, Tomoyuki Takeguchi
  • Publication number: 20120165674
    Abstract: According to one embodiment, an ultrasound diagnosis apparatus includes a motion information generating unit and a control unit. The motion information generating unit generates first motion information on cardiac wall motion of at least one of a left ventricle and a left atrium and second motion information on cardiac wall motion of at least one of a right ventricle and a right atrium, on the basis of a first volume data group and a second volume data group; generates first correction information and second correction information by correcting the first motion information and the second motion information such that the first motion information and the second motion information are substantially synchronized with each other, and generates a motion information image in which the first correction information and the second correction information are arranged along the time axis. The control unit controls to display the motion image information.
    Type: Application
    Filed: March 1, 2012
    Publication date: June 28, 2012
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yasuhiko ABE, Tetsuya Kawagishi
  • Patent number: 8208703
    Abstract: A motion function of a biological tissue is efficiently evaluated on the basis of image data collected from different medical image diagnostic apparatuses. In terms of a common analysis algorithm applied to subject's time-series image data supplied from a separate medical image diagnostic apparatus, a setting part sets a plurality of interest points on a myocardial tissue of a reference image data extracted from the image data, and a tracking process part measures a motion parameter on the basis of displacement information of the myocardial tissue at the interest points obtained by a tracking process between the reference image data and subsequent image data thereof. Meanwhile, a data creating unit creates parameter image data showing two-dimension distribution of the motion parameter or parameter time-series data showing a variation in time of the motion parameter as parameter data on the basis of the measurement result, and displays the parameter data.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: June 26, 2012
    Assignees: Toshiba Medical Systems Corporation, The Johns Hopkins University
    Inventors: Tetsuya Kawagishi, Hiroyuki Ohuchi, Yasuhiko Abe, Thomas Helle-Valle, Joao A. C. Lima