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: 20210369247
    Abstract: A medical image diagnosis apparatus according to an embodiment includes processing circuitry configured to acquire signals from a subject over time, calculate a first similarity representing a similarity of the signals between frames with respect to each of a plurality of frames and a plurality of positions and calculate a second similarity representing a similarity of change of the first similarity over time between the positions, and output the second similarity.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 2, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yu IGARASHI, Masaki WATANABE, Yasunori HONJO, Tomohisa IMAMURA, Tetsuya KAWAGISHI
  • Publication number: 20210315543
    Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 14, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Masaki WATANABE, Tetsuya KAWAGISHI
  • Patent number: 11071524
    Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to detect a shear wave propagating in an object. The processing circuitry is configured to calculate an index value that indicates viscosity within the object and that is not dependent on any physical model related to viscoelasticity, by analyzing the detected shear wave.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: July 27, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi
  • Patent number: 11039777
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes calculation circuitry, acquisition circuitry, determination circuitry, and scan control circuitry. The calculation circuitry calculates an indicator related to motion of biological tissue in a subject, based on echo data obtained through a pre-scan for the subject. The acquisition circuitry acquires a periodic biological signal of the subject. The determination circuitry specifies at least one tune phase in one cycle of the biological signal acquired during the pre-scan, based on the indicator, and determines a timing of a main scan for the subject, based on the specified time phase and the biological signal acquired after the pre-scan. The scan control circuitry executes the main scan at the timing determined by the determination circuitry.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: June 22, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori Honjo, Tetsuya Kawagishi, Akihiro Kakee, Yuko Kanayama, Masaki Watanabe
  • Patent number: 10959704
    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: Grant
    Filed: April 4, 2014
    Date of Patent: March 30, 2021
    Assignee: Canon Medical Systems Corporation
    Inventors: Yuko Kanayama, Tetsuya Kawagishi
  • Patent number: 10792009
    Abstract: When displaying a plurality of images in different conformations in relation to information of a tissue motion typified by a heart wall motion, support information which is used to rapidly and easily visually confirm a relative positional correspondence relationship between an MPR image, a polar mapping image, and a three-dimensional image is generated and displayed. A marker indicative of a desired local position is set and displayed as required. Further, a position corresponding to the set or changed marker may not be present on the MPR image. In such a case, the MPR image always including a position corresponding to the set or changed marker is generated and displayed by automatically adjusting a position of an MPR cross section.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: October 6, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hiroyuki Ohuchi, Yasuhiko Abe, Tetsuya Kawagishi, Shinichi Hashimoto
  • Publication number: 20200111559
    Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of time-series medical images. The processing circuitry calculates, for each of image pairs each formed of two medical images included in the medical images, a first index value indicating similarity between image signals in the two medical images. The processing circuitry also calculates, on the basis of a plurality of the first index values calculated for the respective image pairs, a second index value corresponding to a statistical value in a time direction of the first index values.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Tetsuya Kawagishi, Masaki Watanabe
  • Patent number: 10575826
    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: Grant
    Filed: December 2, 2014
    Date of Patent: March 3, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hiroki Yoshiara, Kuramitsu Nishihara, Akihiro Kakee, Tetsuya Kawagishi, Makoto Hirama
  • Publication number: 20190374204
    Abstract: An analyzing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain pieces of Doppler image data in a time series rendering a blood flow in an analysis target formed in a blood vessel. The processing circuitry is configured to analyze the pieces of Doppler image data in the time series and to calculate an index value based on temporal changes in a first blood flow signal intensity level in a first region of interest including the blood flow in the analysis target.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Masaki WATANABE, Yu IGARASHI, Tetsuya KAWAGISHI
  • Publication number: 20190298304
    Abstract: An ultrasound diagnosis apparatus according to an embodiment includes an image generating unit, a specifying unit, and an obtaining unit. The image generating unit is configured to generate images in a time series on the basis of a result of a scan performed on a scan region. The specifying unit is configured to specify the position of a moving member included in the scan region, with respect to each of the images in the time series. The obtaining unit is configured to obtain movement information of the moving member on the basis of the positions of the moving member and to obtain a moment of first or higher order related to the movement information of the moving member, with respect to at least a part of the scan region.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Yu Igarashi, Masaki Watanabe, Yasunori Honjo, Tetsuya Kawagishi
  • Patent number: 10405833
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment generates, based on the echo signal, velocity distribution information of a tissue in the object. The ultrasonic diagnostic apparatus generates state information representing a cycle of the pressurization or the depressurization and target information representing a target cycle of pressurization or depressurization based on the velocity distribution information. The ultrasonic diagnostic apparatus associates one of two variables defining a predetermined graphic pattern with the cycle, displays the state information and the target information as the graphic pattern, and displays the graphic pattern upon deforming a shape of the graphic pattern in accordance with a change in the cycle of the pressurization or the depressurization in the state information.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: September 10, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Ryota Osumi, Tetsuya Kawagishi, Yasuhiko Abe, Toshie Maruyama
  • Publication number: 20190261953
    Abstract: According to one embodiment, an analysis apparatus includes processing circuitry. The processing circuitry configured to generate a harmonic signal and a fundamental wave signal based on a reception signal that is collected by an ultrasound probe, the harmonic signal corresponding to a harmonic component of a reflected wave of a ultrasound generated in the subject, the fundamental wave signal corresponding to a fundamental wave component of the reflected wave, calculate a first index value indicating tissue properties of the subject based on the harmonic signal, and calculate a second index value indicating the tissue properties based on the fundamental wave signal, and display an analysis result based on the first index value and the second index value.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Yasunori HONJO, Masaki WATANABE, Tetsuya KAWAGISHI, Keita YONEMORI
  • Patent number: 10363018
    Abstract: According to one embodiment, a medical processing apparatus includes processing circuitry. The processing circuitry adds incidental information including information regarding a kind concerning each of a plurality of regions in a heart to an analysis result of each of the regions. The analysis result is obtained by analyzing medical data. The processing circuitry determines a display position of the analysis result of each of the regions based on the incidental information.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 30, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shogo Fukuda, Yasuhiko Abe, Tetsuya Kawagishi, Koji Ando, Mitsuo Akiyama
  • Patent number: 10342514
    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: Grant
    Filed: June 30, 2014
    Date of Patent: July 9, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yuko Kanayama, Akihiro Kakee, Tetsuya Kawagishi
  • Patent number: 10278670
    Abstract: In general, according to one embodiment, an ultrasonic diagnostic apparatus is used to observe a position and puncture direction of a puncture needle in an object in a paracentesis, and comprises data acquisition unit, image generation unit and a display. The data acquisition unit acquires a plurality of first ultrasound data concerning an inside of the object, acquire a plurality of second ultrasound data concerning the inside of the object, and acquire a plurality of third ultrasound data concerning the inside of the object. The image generation unit generates a tissue image displaying a living body tissue by using the first ultrasound data, generate a puncture image displaying the puncture needle based on image processing using the second ultrasound data and the third ultrasound data, and generate a composite image visualizing the living body tissue and the puncture needle by using the tissue image and the puncture image.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 7, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hiroyuki Ohuchi, Tetsuya Yoshida, Tetsuya Kawagishi, Yoko Okamura
  • Patent number: 10234557
    Abstract: A signal processing apparatus of an embodiment includes processing circuitry and control circuitry. The processing circuitry acquires a plurality of IQ signals obtained by performing a plurality of processing with different conditions on reflected wave signals generated at a transducer element included in an ultrasound probe. The processing circuitry generates a compound signal compounded by non-linear processing of the IQ signals. The control circuitry causes a display to display image data based on the compound signal.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: March 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yasunori Honjo, Yasuhiko Abe, Tetsuya Kawagishi, Akihiro Kakee, Takeshi Sato, Makoto Hirama
  • Publication number: 20190000414
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to perform a speckle noise reducing process on each of a plurality of images that were acquired by using an ultrasound wave and are in a time series. The processing circuitry is configured to calculate an index value indicating fluttering of image signal intensities in each of multiple positions within a region of interest, on the basis of the plurality of images resulting from the speckle noise reducing process.
    Type: Application
    Filed: May 25, 2018
    Publication date: January 3, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi, Koichiro Kurita
  • Patent number: 10143439
    Abstract: An ultrasound diagnosis apparatus includes: a transmitting and receiving unit that transmits and receives an ultrasound wave to and from a subject; a first image data generating unit that generates first image data based on a first parameter, from a reception signal received by the transmitting and receiving unit; a second image data generating unit that generates second image data having an image taking region of which at least a part overlaps with that of the first image data and being based on a second parameter that is different from the first parameter, from a reception signal received by the transmitting and receiving unit; and an image processing unit that calculates a feature amount from at least such a part of the second image data that overlaps with the first image data and corrects the overlapping part of the first image data on a basis of the calculated feature amount.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: December 4, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Ryota Osumi, Tetsuya Kawagishi
  • Patent number: 10117636
    Abstract: Position coordinate information of each point three-dimensionally forming a tissue corresponding to a diagnosis target at each time phase is obtained, a quantitative value for evaluating the movement of the tissue corresponding to the diagnosis target is calculated by using the position information, and the result is output in a predetermined form. Accordingly, since the quantitative value for evaluating the movement is calculated by using the three-dimensional position coordinate information without converting wall movement information obtained by a three-dimensional tracking process into two-dimensional information, it is possible to provide medical information with a higher degree of precision.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: November 6, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hiroyuki Ohuchi, Shinichi Hashimoto, Yasuhiko Abe, Tetsuya Kawagishi
  • Patent number: 10064601
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment include a transmitter/receiver, a signal processor, and an image generator. The transmitter/receiver causes an ultrasonic probe to transmit on each scanning line at least three ultrasonic pulses, the three ultrasonic pulses being: a first ultrasonic pulse including at least one frequency component and being transmitted with a first phase; a second ultrasonic pulse including the frequency component and being transmitted with a second phase different from the first phase by 180 degrees; and a third ultrasonic pulse including the frequency component and being transmitted with a third phase different from the first phase and the second phase by 90 degrees and generates a plurality of reception signals corresponding to the respective ultrasonic pulses. The signal processor combines the plurality of the reception signals and generates a composite signal. The image generator generates ultrasonic image data.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: September 4, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takeshi Fukasawa, Tetsuya Kawagishi, Akihiro Kakee, Makoto Hirama