Patents by Inventor Hitoshi Yamagata

Hitoshi Yamagata 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: 20230281838
    Abstract: A medical image processing apparatus includes processing circuitry.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 7, 2023
    Applicants: CANON MEDICAL SYSTEMS CORPORATION, FUJITA ACADEMY
    Inventors: Yoshiharu OHNO, Kota AOYAGI, Hitoshi YAMAGATA
  • Patent number: 11698428
    Abstract: An information processing apparatus according to an embodiment includes a processing circuit. The processing circuit acquires a measurement field corresponding to a spatial distribution of a predetermined physical quantity in a subject of measurement. The processing circuit calculates an unknown quantity in the subject of measurement based on a first equation between the measurement field and the unknown quantity having spatial dependence, and on the acquired measurement field. The first equation is one that is acquired based on a second equation expressing a dual field divergence of which can be expressed using the measurement field, by using the measurement field and the unknown quantity, and on the Helmholtz decomposition of the dual field.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: July 11, 2023
    Assignees: The University of Tokyo, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takaaki Nara, Motofumi Fushimi, Naohiro Eda, Seiichi Shin, Hitoshi Yamagata, Koji Yano, Hiroyuki Fujita
  • Publication number: 20230025920
    Abstract: A medical information processing apparatus according to an embodiment includes storage circuitry and processing circuitry. The storage circuitry is configured to store therein human body data structured with a plurality of voxels. The processing circuitry is configured to generate human body data by causing each of the voxels in the human body data to store therein composition information based on information about an anatomical structure of a human body, a data value based on medical image data, and relevance to an adjacent voxel.
    Type: Application
    Filed: October 6, 2022
    Publication date: January 26, 2023
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Naoki SASAKI, Hitoshi YAMAGATA
  • Patent number: 11544842
    Abstract: A medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain image data which is generated by scanning a brain of a subject; select a target region from the image data; extract a connected region of which a brain function is associated with a brain function of the target region, as an additional region; and output scan target region including the target region and the additional region.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: January 3, 2023
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Qiqi Xu, Fanjie Meng, Hitoshi Yamagata
  • Patent number: 11544040
    Abstract: A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: January 3, 2023
    Assignees: TOHOKU UNIVERSITY, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takahiro Hanyu, Naoya Onizawa, Akira Tamakoshi, Hiroyuki Fujita, Hitoshi Yamagata
  • Patent number: 11492585
    Abstract: According to one embodiment, a cell identification system includes an imaging device and an identification device. The imaging device includes a well plate, a rotation mechanism, and an imaging part. The well plate is provided with a plurality of wells capable of accommodating cells. The rotation mechanism rotates the cells. The imaging part images the cells. The identification device includes processing circuitry. The processing circuitry controls the rotation mechanism to rotate the cells, controls the imaging part to image the cells each time the cells are rotated by the rotation mechanism, and inputs an image for the cells captured by the imaging part to a learned model so as to identify a cell in a good state from among the cells.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 8, 2022
    Assignee: Canon Medical Systems Corporation
    Inventor: Hitoshi Yamagata
  • Publication number: 20220236352
    Abstract: An information processing apparatus according to an embodiment includes a processing circuit. The processing circuit acquires a measurement field corresponding to a spatial distribution of a predetermined physical quantity in a subject of measurement. The processing circuit calculates an unknown quantity in the subject of measurement based on a first equation between the measurement field and the unknown quantity having spatial dependence, and on the acquired measurement field. The first equation is one that is acquired based on a second equation expressing a dual field divergence of which can be expressed using the measurement field, by using the measurement field and the unknown quantity, and on the Helmholtz decomposition of the dual field.
    Type: Application
    Filed: January 27, 2022
    Publication date: July 28, 2022
    Applicants: The University of Tokyo, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takaaki NARA, Motofumi FUSHIMI, Naohiro EDA, Seiichi SHIN, Hitoshi YAMAGATA, Koji YANO, Hiroyuki FUJITA
  • Patent number: 11331072
    Abstract: An ultrasound medical device and an ultrasound diagnostic imaging device are provided that allow orally-fed fluid food, etc. to pass through the esophagus of the subject. The ultrasound medical device includes a capsule-type main body configured to incorporate ultrasound transducers, so that the ultrasound transducers in the capsule-type main body, which has been inserted in a tubular body part of a subject, send ultrasound waves to the subject's interiors and receive reflected waves. The ultrasound medical device further includes a support configured to be incorporated in the capsule-type main body and to have a form of tube with a through-hole axially passing through the tube. The ultrasound transducers are arranged external to the tube.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 17, 2022
    Assignee: Canon Medical Systems Corporation
    Inventors: Hitoshi Yamagata, Makoto Hirama
  • Publication number: 20210117159
    Abstract: A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.
    Type: Application
    Filed: September 11, 2020
    Publication date: April 22, 2021
    Applicants: TOHOKU UNIVERSITY, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takahiro HANYU, Naoya ONIZAWA, Akira TAMAKOSHI, Hiroyuki FUJITA, Hitoshi YAMAGATA
  • Patent number: 10888226
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: January 12, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hitoshi Yamagata, Masao Yui
  • Publication number: 20200377842
    Abstract: According to one embodiment, a cell identification system includes an imaging device and an identification device. The imaging device includes a well plate, a rotation mechanism, and an imaging part. The well plate is provided with a plurality of wells capable of accommodating cells. The rotation mechanism rotates the cells. The imaging part images the cells. The identification device includes processing circuitry. The processing circuitry controls the rotation mechanism to rotate the cells, controls the imaging part to image the cells each time the cells are rotated by the rotation mechanism, and inputs an image for the cells captured by the imaging part to a learned model so as to identify a cell in a good state from among the cells.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Applicant: Canon Medical Systems Corporation
    Inventor: Hitoshi YAMAGATA
  • Patent number: 10765407
    Abstract: An ultrasound diagnosis apparatus includes an ultrasound transducer, an evaluation value acquisition unit, a determination unit, and an output unit. The evaluation value acquisition unit obtains an evaluation value for evaluating the function of tissue including a predetermined site based on biological information acquired for a predetermined period of time by the ultrasound transducer. The determination unit determines whether the function of the tissue is abnormal based on the evaluation value. The output unit outputs information based on a result of determination by the determination unit.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 8, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hitoshi Yamagata, Yasuhiko Abe
  • Publication number: 20200260976
    Abstract: An estimating method according to an embodiment is an estimating method for estimating a region of nerve activity, the estimation method including estimating which nerve bundle has conducted an electric current in a subject, based on information representing a three-dimensional structure of nerve bundles and information representing a distribution of a magnetic field near a surface of the subject.
    Type: Application
    Filed: February 5, 2020
    Publication date: August 20, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Naoki SASAKI, Hitoshi Yamagata
  • Patent number: 10672126
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a magnetic resonance (MR) image in which objects of interest scattered in a brain of a subject are rendered. The processing circuitry acquires connection information indicating connectivity among a plurality of regions of the brain. The processing circuitry performs an analysis with use of the MR image and the connection information, and calculates analytical values related to the objects of interest and allocated to the regions.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 2, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Masao Yui, Hitoshi Yamagata
  • Publication number: 20200167912
    Abstract: A medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain image data which is generated by scanning a brain of a subject; select a target region from the image data; extract a connected region of which a brain function is associated with a brain function of the target region, as an additional region; and output scan target region including the target region and the additional region.
    Type: Application
    Filed: October 14, 2019
    Publication date: May 28, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Qiqi XU, Fanjie MENG, Hitoshi YAMAGATA
  • Publication number: 20200069185
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Hitoshi YAMAGATA, Masao YUI
  • Patent number: 10492687
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: December 3, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Hitoshi Yamagata, Masao Yui
  • Patent number: 10413236
    Abstract: A medical-image processing apparatus according to an embodiment includes an extracting unit, a dividing unit, and an estimating unit. The extracting unit extracts a disease candidate region from a medical image. The dividing unit divides the disease candidate region into multiple partial regions. The estimating unit uses the feature value of each of the partial regions to estimate the disease state of the disease candidate region.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: September 17, 2019
    Assignees: Canon Medical Systems Corporation, NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
    Inventors: Kota Aoyagi, Hitoshi Yamagata, Mizuho Nishio, Sumiaki Matsumoto
  • Publication number: 20190133447
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Hitoshi YAMAGATA, Masao Yui
  • Patent number: 10268802
    Abstract: According to one embodiment, a medical image processing apparatus and a medical image processing system includes at least a position detecting unit, a human body chart storage unit, a mapping chart generating unit, and a display. A position detecting unit detects a position of a characteristic local structure in a human body from the medical image. A human body chart storage unit stores a human body chart that represents the human body. A mapping chart generating unit generates a mapping chart that is the human body chart to which a mark indicating a position of the local structure detected by the position detecting unit is added. A display displays the mapping chart.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: April 23, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yosuke Yanagida, Junichi Tashiro, Jyunichi Yoshida, Kousuke Sakaue, Masashi Yoshida, Shigeyuki Ishii, Satoshi Ikeda, Hitoshi Yamagata, Takashi Masuzawa, Naoki Sugiyama, Muneyasu Kazuno