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: 20240050062
    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 25, 2023
    Publication date: February 15, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Tetsuya KAWAGISHI, Masaki WATANABE
  • Publication number: 20240041434
    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: October 20, 2023
    Publication date: February 8, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Masaki WATANABE, Tetsuya KAWAGISHI
  • Patent number: 11844651
    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: Grant
    Filed: June 7, 2019
    Date of Patent: December 19, 2023
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori Honjo, Masaki Watanabe, Yu Igarashi, Tetsuya Kawagishi
  • Patent number: 11826203
    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: June 22, 2021
    Date of Patent: November 28, 2023
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi
  • Patent number: 11730444
    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: Grant
    Filed: May 25, 2018
    Date of Patent: August 22, 2023
    Assignee: Canon Medical Systems Corporation
    Inventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi, Koichiro Kurita
  • Patent number: 11701091
    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: Grant
    Filed: February 22, 2019
    Date of Patent: July 18, 2023
    Assignee: Canon Medical Systems Corporation
    Inventors: Yasunori Honjo, Masaki Watanabe, Tetsuya Kawagishi, Keita Yonemori
  • Patent number: 11672506
    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: Grant
    Filed: December 4, 2014
    Date of Patent: June 13, 2023
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Cong Yao, Shintaro Niwa, Tetsuya Kawagishi, Yoshitaka Mine
  • Publication number: 20230080726
    Abstract: An ultrasonic diagnosis apparatus according to an embodiment includes a transmission unit, a reception unit, a generator, and a display controller. The transmission unit causes an ultrasonic probe to transmit a displacement-producing ultrasonic wave and causes the probe to transmit a displacement-observing ultrasonic wave. The reception unit generates reflected-wave data based on a reflected wave received by the probe. The generator calculates displacement at each of a plurality of positions in the scan area over a plurality of time phases, based on the reflected-wave data, determines a time phase when the calculated displacement is substantially maximum, for each of the positions, and generates image data representing positions where the determined time phases are substantially the same as each other, among the positions. The display controller superimposes an image based on the image data on a medical image corresponding to an area including the scan area.
    Type: Application
    Filed: November 22, 2022
    Publication date: March 16, 2023
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Masaki WATANABE, Yuko KANAYAMA, Tetsuya KAWAGISHI, Yoshimi MUTO, Eiji GOTO, Koichiro KURITA, Shogo FUKUDA
  • Patent number: 11564659
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes transmission circuitry, receiving circuitry and extracting circuitry. The transmission circuitry cause an ultrasonic probe to perform three or more times of ultrasonic wave transmissions, an ultrasonic wave to be transmitted including a center frequency component, a phase of the center frequency component being different in each transmission. The receiving circuitry generates three or more reception signals corresponding to a common reception scanning line based on a plurality of reflected wave signals, the plurality of reflected wave signals being obtained through the three or more times of ultrasonic wave transmissions. The extracting circuitry extracts a nonlinear component included in the three or more reception signals by adding up the three or more reception signals after performing a processing including phase rotation processing on two or more reception signals among the three or more reception signals.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: January 31, 2023
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroki Yoshiara, Tetsuya Kawagishi, Tomohisa Imamura, Yasunori Honjo, Akihiro Kakee, Yuko Takada
  • Patent number: 11534142
    Abstract: An ultrasonic diagnosis apparatus according to an embodiment includes a transmission unit, a reception unit, a generator, and a display controller. The transmission unit causes an ultrasonic probe to transmit a displacement-producing ultrasonic wave and causes the probe to transmit a displacement-observing ultrasonic wave. The reception unit generates reflected-wave data based on a reflected wave received by the probe. The generator calculates displacement at each of a plurality of positions in the scan area over a plurality of time phases, based on the reflected-wave data, determines a time phase when the calculated displacement is substantially maximum, for each of the positions, and generates image data representing positions where the determined time phases are substantially the same as each other, among the positions. The display controller superimposes an image based on the image data on a medical image corresponding to an area including the scan area.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 27, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Masaki Watanabe, Yuko Kanayama, Tetsuya Kawagishi, Yoshimi Muto, Eiji Goto, Koichiro Kurita, Shogo Fukuda
  • Patent number: 11517288
    Abstract: An ultrasonic diagnostic apparatus in an embodiment includes processing circuitry. The processing circuitry is configured to cause an ultrasonic probe to perform an ultrasound scan of a subject. The processing circuitry is configured to generate a shadow image by assigning at least one of hue, saturation, and lightness depending on a feature of an acoustic shadow that has appeared in the result of the ultrasound scan.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: December 6, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yu Igarashi, Masaki Watanabe, Yuko Kanayama, Yasunori Honjo, Tetsuya Kawagishi
  • Publication number: 20220189613
    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: March 4, 2022
    Publication date: June 16, 2022
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori HONJO, Tetsuya KAWAGISHI, Masaki WATANABE
  • Patent number: 11317896
    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: Grant
    Filed: November 3, 2017
    Date of Patent: May 3, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasuhiko Abe, Tetsuya Kawagishi
  • Patent number: 11302438
    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: Grant
    Filed: October 3, 2019
    Date of Patent: April 12, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunori Honjo, Tetsuya Kawagishi, Masaki Watanabe
  • Patent number: 11298109
    Abstract: An ultrasonic diagnostic apparatus according to an embodiment includes a candidate-position extracting circuitry and a position setting circuitry. The candidate-position extracting circuitry extracts a first position through comparison of a fundamental wave component between a plurality pieces of image data collected by performing ultrasonic scanning on a subject injected with a contrast agent. The candidate-position extracting circuitry also extracts a second position through comparison of a harmonic component between the pieces of image data. The position setting circuitry sets the first position or the second position as a position of a region of interest where predetermined analysis is performed in at least one image data of the pieces of image data.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 12, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Cong Yao, Tetsuya Kawagishi, Yoshitaka Mine, Naoki Yoneyama, Hiroki Yoshiara
  • Patent number: 11202619
    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: Grant
    Filed: December 9, 2013
    Date of Patent: December 21, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasuhiko Abe, Hiroyuki Ohuchi, Tetsuya Kawagishi
  • 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