Patents by Inventor Kazumasa Arakita

Kazumasa Arakita 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).

  • Patent number: 10776960
    Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 15, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hideaki Ishii, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
  • Patent number: 10748285
    Abstract: There is provided a medical image processing apparatus which includes a first extraction unit configured to extract coronary arteries depicted in images of a plurality of time phases relating to the heart, and to extract at least one stenosed part depicted in each coronary artery; a calculation unit configured to calculate a pressure gradient of each of the extracted coronary arteries, based on tissue blood flow volumes of the coronary arteries; a second extraction unit configured to extract an ischemic region depicted in the images; and a specifying unit configured to specify a responsible blood vessel of the ischemic region by referring to a dominance map, in which each of the extracted coronary arteries and a dominance territory are associated, for the extracted ischemic region, and to specify a responsible stenosis, based on the pressure gradient corresponding to a stenosed part in the specified responsible blood vessel.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 18, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Takuma Igarashi, Satoshi Wakai, Kazumasa Arakita, Hideaki Ishii, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
  • Publication number: 20200242770
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yiemeng HOI, Joseph MANAK, Kazumasa ARAKITA, Jingwu YAO, James BEGELMAN, Victor GORIN
  • Patent number: 10650522
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 12, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
  • Publication number: 20200118669
    Abstract: A medical image processing apparatus comprises processing circuitry configured to: acquire at least one first data set representative of measurements using a medical scanner and including a representation of at least one blood vessel; acquire a plurality of second data sets representative of measurements obtained using the medical scanner and including a representation of said at least one blood vessel, each of the plurality of second data sets representing measurements obtained for a respective different one of a plurality of cardiac phases; and process the plurality of second data sets using a motion estimation procedure to correct for motion between the cardiac phases and, using the at least one first data set, to at least partially remove at least one feature associated with the blood vessel.
    Type: Application
    Filed: October 16, 2018
    Publication date: April 16, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Brian MOHR, Kazumasa ARAKITA, James MATTHEWS
  • Patent number: 10565709
    Abstract: An image processing apparatus according to an embodiment comprises processing circuitry configured to acquire morphology image data including a site of a subject and function image data including the site, extract a blood vessel region that corresponds to a blood vessel included in the morphology image data, calculate a fluid index in the blood vessel region, and based on the fluid index, calculate a first function index as an index indicating a function of a tissue to which a nutrient is supplied from the blood vessel, acquire a second function index as an index indicating a function of the tissue based on the function image data, detect a mismatch between the first function index and the second function index, and determine a spatial region that corresponds to the mismatch in the site.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: February 18, 2020
    Assignee: Canon Medical Systems Coporation
    Inventors: Kazumasa Arakita, Masahiro Kubota
  • Patent number: 10478073
    Abstract: A centerline extraction unit extracts at least two coronary artery centerline structures from at least two images respectively corresponding to at least two cardiac phases concerning a heart, an interpolation processing unit interpolates coronary artery centerline structures concerning other cardiac phases from the at least two extracted coronary artery centerline structures to generate coronary artery centerline structures respectively corresponding to a plurality of cardiac phases throughout one heartbeat of the heart, and a displacement distribution calculation unit calculates a plurality of displacement distributions between the respective cardiac phases from a plurality of coronary artery centerline structures throughout the one heartbeat.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: November 19, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Hideaki Ishii, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
  • Publication number: 20190266729
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
  • Publication number: 20190221008
    Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hideaki ISHII, Satoshi WAKAI, Kazumasa ARAKITA, Takuma IGARASHI, Yasuko FUJISAWA, Shigeo KAMINAGA, Kenji HIROHATA, Junichiro OOGA
  • Patent number: 10346984
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: July 9, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
  • Publication number: 20190159759
    Abstract: A medical diagnostic-imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires three-dimensional medical image data in which a subject is imaged. The processing circuitry extracts a movable range of a probe based on a structure of the subject shown in the three-dimensional medical image data. The processing circuitry sets a target scan region to be a subject to scanning by the probe based on the extracted movable range. The processing circuitry displays the target scan region in the three-dimensional medical image data.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yuri MURAKAMI, Takuya SAKAGUCHI, Kazumasa ARAKITA
  • Patent number: 10275908
    Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: April 30, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hideaki Ishii, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Yasuko Fujisawa, Shigeo Kaminaga, Kenji Hirohata, Junichiro Ooga
  • Patent number: 10249043
    Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: April 2, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Junichiro Ooga, Kenji Hirohata, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Hideaki Ishii
  • Patent number: 10206587
    Abstract: An image processing apparatus according to an embodiment includes a processing circuitry. The processing circuitry is configured to obtain images in a time series including images of a blood vessel of a subject and correlation information indicating a correlational relationship between physical indices of the blood vessel and function indices of the blood vessel related to vascular hemodynamics, calculate blood vessel morphology indices in a time series indicating morphology of the blood vessel of the subject, on a basis of the images in the time series, and identify a function index of the blood vessel of the subject, by using a physical index of the blood vessel of the subject obtained from the blood vessel morphology indices, on a basis of the correlation information.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 19, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Akira Kano, Kenji Hirohata, Junichiro Ooga, Mitsuaki Kato, Takuya Hongo, Akihiro Goryu, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Yoshihiro Ikeda, Kazumasa Arakita
  • Publication number: 20190000551
    Abstract: A medical image processing apparatus according to an embodiment comprises processing circuitry configured to: acquire a position of an interatrial septum and a device reaching position in a medical image indicating heart of a subject; calculate a puncturing region, in the interatrial septum, enabling a medical device to reach the device reaching position through the interatrial septum on the basis of the position of the interatrial septum and the device reaching position; and present the puncturing region.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 3, 2019
    Applicant: Canon Medical Systems Corporation
    Inventors: Yukari SONE, Kazumasa ARAKITA, Takahiko NISHIOKA
  • Patent number: 10159448
    Abstract: An X-ray CT apparatus according to an embodiment includes processing circuitry. The processing circuitry collects pieces of image data in a plurality of time phases that contain at least a part of a coronary artery of a heart. The processing circuitry acquires image indexes regarding the pieces of image data. The processing circuitry extracts a set of image data from combinations of pieces of image data having a larger time interval than a predetermined time interval, of the pieces of image data, based on the image indexes in the respective pieces of image data. The processing circuitry performs fluid analysis regarding the coronary artery based on the extracted set of image data to obtain a fluid parameter regarding the coronary artery.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: December 25, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Hideaki Ishii, Takuya Sakaguchi, Kazumasa Arakita
  • Patent number: 10163209
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: December 25, 2018
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
  • Publication number: 20180357767
    Abstract: An image processing apparatus according to an embodiment comprises processing circuitry configured to acquire morphology image data including a site of a subject and function image data including the site, extract a blood vessel region that corresponds to a blood vessel included in the morphology image data, calculate a fluid index in the blood vessel region, and based on the fluid index, calculate a first function index as an index indicating a function of a tissue to which a nutrient is supplied from the blood vessel, acquire a second function index as an index indicating a function of the tissue based on the function image data, detect a mismatch between the first function index and the second function index, and determine a spatial region that corresponds to the mismatch in the site.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Applicant: Canon Medical Systems Corporation
    Inventors: Kazumasa ARAKITA, Masahiro Kubota
  • Publication number: 20180330503
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 15, 2018
    Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yiemeng HOI, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
  • Publication number: 20180174297
    Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.
    Type: Application
    Filed: February 14, 2018
    Publication date: June 21, 2018
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Junichiro Ooga, Kenji Hirohata, Shigeo Kaminaga, Yasuko Fujisawa, Satoshi Wakai, Kazumasa Arakita, Takuma Igarashi, Hideaki Ishii