Patents by Inventor Shumpei Ohashi

Shumpei Ohashi 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: 11179125
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to sequentially obtain X-ray images. The processing circuitry is configured to sequentially generate average images by using the obtained plurality of X-ray images, in parallel to the obtainment of the X-ray images. The processing circuitry is configured to sequentially generate difference images by performing a difference calculating process between the X-ray images and the average images, in parallel to the obtainment of the X-ray images and the generation of the average images.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 23, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shumpei Ohashi, Yoshiaki Iijima, Kunio Shiraishi
  • Publication number: 20210321966
    Abstract: An X-ray diagnostic apparatus of an embodiment includes processing circuitry. The processing circuitry determines a concentration of a contrast agent in contrast-enhanced image collection based on first reference information in which a recommended contrast in a contrast-enhanced image is associated with each region of interest to be subject to collection of the contrast-enhanced image, and on second reference information that indicates a relation among a generation condition of an X-ray, a concentration of a contrast agent, and a contrast. The processing circuitry calculates setting information of an injector to inject a contrast agent to the subject based on the determined concentration of a contrast agent.
    Type: Application
    Filed: April 16, 2021
    Publication date: October 21, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shumpei OHASHI, Junichi YAMAGISHI, Naotaka SATO, Jun SAKAKIBARA, Yusuke KANNO, Toshiya WAKU
  • Publication number: 20210145386
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes a storage, an imaging equipment, a display, an input interface, and processing circuitry. The storage memorizes medical images. The imaging equipment includes an X-ray tube configured to emit X-rays toward a subject and a detector configured to detect X-rays emitted from the X-ray tube. The display displays a plurality of medical images including X-ray images captured by the imaging equipment. The input interface accepts an operation instructing storage of a medical image displayed on the display. The processing circuitry identifies a medical image associated with a last-executed, targeted operation, among targeted operations related to any of medical images displayed on the display, and, when the input interface has accepted an operation instructing storage of a medical image displayed on the display, causes the storage to memorize the identified medical image.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 20, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Sho SASAKI, Ryoichi NAGAE, Masanori MATSUMOTO, Yoshiyasu HAYASHI, Shumpei OHASHI, Tomoki FUJITO
  • Patent number: 10863961
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry configured: to sequentially acquire X-ray images; to set a unit number of frames used as a unit during image processing; and to sequentially generate images in each of which a pixel value of each pixel expresses either the largest pixel value or the smallest pixel value among corresponding pixels in X-ray images corresponding to the unit number of frames, on the basis of the X-ray images corresponding to the unit number of frames including each of new X-ray image that is sequentially acquired and at least one X-ray image acquired before the new X-ray image.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 15, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Shumpei Ohashi
  • Publication number: 20200334815
    Abstract: According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry specifies, before position alignment between a first X-ray image and a second X-ray image which is acquired with a device inserted, a device area candidate in the second X-ray image as a candidate of an area where the device appears. The processing circuitry performs the position alignment using first processing of removing the specified device area candidate or second processing of reducing a contribution of the specified device area candidate.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 22, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hirona OIKAWA, Shingo ABE, Kunio SHIRAISHI, Toshiya WAKU, Shumpei OHASHI, Akihito TAKAHASHI, Saki HASHIMOTO, Jumpei OGASAWARA
  • Publication number: 20200113535
    Abstract: An X-ray diagnosis apparatus according to an embodiment includes: processing circuitry configured: to sequentially generate X-ray image data based on a detection result obtained by an X-ray detector; to specify a radiation region of X-rays in each piece of X-ray image data generated during the move of an X-ray blocking member that is moved by an X-ray limiting device on the basis of an operation received by an input interface; to sequentially generate, during the move of the X-ray blocking member, first combined image data by using the radiation region, by combining first X-ray image data generated during the move of the X-ray blocking member, with second X-ray image data generated prior to the move of the X-ray blocking member and stored in storage circuitry; and to cause a display to display a combined image represented by the first combined image data.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 16, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Shumpei OHASHI
  • Publication number: 20190328345
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to sequentially obtain X-ray images. The processing circuitry is configured to sequentially generate average images by using the obtained plurality of X-ray images, in parallel to the obtainment of the X-ray images. The processing circuitry is configured to sequentially generate difference images by performing a difference calculating process between the X-ray images and the average images, in parallel to the obtainment of the X-ray images and the generation of the average images.
    Type: Application
    Filed: April 25, 2019
    Publication date: October 31, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shumpei OHASHI, Yoshiaki IIJIMA, Kunio SHIRAISHI
  • Publication number: 20190274651
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry configured: to sequentially acquire X-ray images; to set a unit number of frames used as a unit during image processing; and to sequentially generate images in each of which a pixel value of each pixel expresses either the largest pixel value or the smallest pixel value among corresponding pixels in X-ray images corresponding to the unit number of frames, on the basis of the X-ray images corresponding to the unit number of frames including each of new X-ray image that is sequentially acquired and at least one X-ray image acquired before the new X-ray image.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Shumpei OHASHI
  • Patent number: 10342503
    Abstract: An X-ray image processing apparatus includes a storage unit, a transformed image generation unit, a scattered ray image generation unit, and a scattered ray reduced image generation unit. The storage unit stores a medical image. The transformed image generation unit generates a transformed image by transforming pixel values, of a plurality of pixel values constituting the medical image, which are higher than a reference value obtained based on a representative value of the plurality of pixel values into pixel values lower than the reference value. The scattered ray image generation unit generates a scattered ray image based on the transformed image and a scattering function. The scattered ray reduced image generation unit generates a scattered ray reduced image with reduced scattered rays by using the medical image and the scattered ray image.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: July 9, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshimasa Kobayashi, Hisanori Kato, Shumpei Ohashi
  • Patent number: 9968326
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube holding device, an X-ray detector, a rotator, an arm, and a tubular body. The X-ray tube holding device generates X-rays. The X-ray detector detects the X-rays. The rotator holds the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis. The arm holds the rotator and the X-ray detector and is rotatable about a second rotation axis different from the first rotation axis. The tubular body connects the X-ray tube holding device and a device away from the arm. The arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: May 15, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshimasa Kobayashi, Shumpei Ohashi
  • Patent number: 9888888
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray source, a plurality of lead plates, attention position specifying circuitry, stop control circuitry. The X-ray source generates X-rays. The plurality of lead plates includes an aperture which narrows an irradiation range of X-rays with which an object is irradiated by the X-ray source. The attention position specifying circuitry specifies an attention position based on a line of sight of an observer. The stop control circuitry performs movement control of the plurality of lead plates based on the specified attention position.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: February 13, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshimasa Kobayashi, Satoru Ohishi, Shumpei Ohashi
  • Patent number: 9848840
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, an X-ray detection unit, an X-ray filter, an input unit, and an X-ray filter support unit. The X-ray tube generates X-rays. The X-ray detection unit detects the X-rays transmitted through a subject. The X-ray filter is arranged between the X-ray tube and the object and has an opening. The X-ray filter support unit supports the X-ray filter so as to make the X-ray filter movable in an imaging axis direction of the X-rays.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: December 26, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shumpei Ohashi, Yoshimasa Kobayashi, Koichiro Watanabe
  • Patent number: 9480451
    Abstract: An X-ray image processing apparatus according to an embodiment includes a specifying unit and a decision unit. The specifying unit processes a first X-ray image based on an output signal from an X-ray detector influenced by the action of an electromagnetic field, and specifies noise characteristics unique to noise components which are contained in the first X-ray image and originate from the action of the electromagnetic field on the X-ray detector. The decision unit decides filter characteristics for reducing the noise components which are contained in the first X-ray image and originate from the action of the electromagnetic field on the X-ray detector based on the specified noise characteristics.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: November 1, 2016
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Yoshimasa Kobayashi, Shumpei Ohashi
  • Patent number: 9474464
    Abstract: An X-ray image diagnostic apparatus includes an X-ray imager, an image data generator, a position information acquisition mechanism, a position information corrector, and a display. The X-ray imager generates projection data by X-ray imaging in first and second imaging modes for a patient. The image data generator generates reference image data based on projection data in the first imaging mode and image data for positional deviation correction based on projection data in the second imaging mode. The position information acquisition mechanism acquires position information of a treatment device inserted into the patient. The position information corrector corrects the position information of the treatment device based on the position information of the treatment device and treatment device information of the image data for positional deviation correction, collected by X-ray imaging in the second imaging mode. The display displays the reference image data to which the corrected position information is added.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 25, 2016
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Haruki Iwai, Shingo Abe, Shumpei Ohashi, Satoru Ohishi
  • Publication number: 20160007949
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube holding device, an X-ray detector, a rotator, an arm, and a tubular body. The X-ray tube holding device generates X-rays. The X-ray detector detects the X-rays. The rotator holds the X-ray tube holding device so as to be rotatable about a first rotation axis obtained by setting an irradiation direction of the X-rays as an axis. The arm holds the rotator and the X-ray detector and is rotatable about a second rotation axis different from the first rotation axis. The tubular body connects the X-ray tube holding device and a device away from the arm. The arm holds the rotator so as to be rotatable about the first rotation axis in a direction in which torsion of the tubular body is reduced.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems Corporation
    Inventors: Yoshimasa KOBAYASHI, Shumpei OHASHI
  • Publication number: 20150272520
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray source, a plurality of lead plates, attention position specifying circuitry, stop control circuitry. The X-ray source generates X-rays. The plurality of lead plates includes an aperture which narrows an irradiation range of X-rays with which an object is irradiated by the X-ray source. The attention position specifying circuitry specifies an attention position based on a line of sight of an observer. The stop control circuitry performs movement control of the plurality of lead plates based on the specified attention position.
    Type: Application
    Filed: June 15, 2015
    Publication date: October 1, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Yoshimasa KOBAYASHI, Satoru OHISHI, Shumpei OHASHI
  • Publication number: 20150078516
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, an X-ray detector, an X-ray filter, signal input unit, and an X-ray filter support unit. The X-ray tube generates X-rays. The X-ray detector detects the X-rays transmitted through a subject. The X-ray filter is arranged between the X-ray tube and the object and having an opening. The X-ray filter support unit supports the X-ray filter so as to make the X-ray filter movable in an imaging axis direction of the X-rays.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 19, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems Corporation
    Inventors: Shumpei OHASHI, Yoshimasa KOBAYASHI, Koichiro WATANABE
  • Publication number: 20150063541
    Abstract: An X-ray image processing apparatus according to an embodiment includes a specifying unit and a decision unit. The specifying unit processes a first X-ray image based on an output signal from an X-ray detector influenced by the action of an electromagnetic field, and specifies noise characteristics unique to noise components which are contained in the first X-ray image and originate from the action of the electromagnetic field on the X-ray detector. The decision unit decides filter characteristics for reducing the noise components which are contained in the first X-ray image and originate from the action of the electromagnetic field on the X-ray detector based on the specified noise characteristics.
    Type: Application
    Filed: August 18, 2014
    Publication date: March 5, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems Corporation
    Inventors: Yoshimasa KOBAYASHI, Shumpei OHASHI
  • Publication number: 20150063526
    Abstract: An X-ray image processing apparatus includes a storage unit, a transformed image generation unit, a scattered ray image generation unit, and a scattered ray reduced image generation unit. The storage unit stores a medical image. The transformed image generation unit generates a transformed image by transforming pixel values, of a plurality of pixel values constituting the medical image, which are higher than a reference value obtained based on a representative value of the plurality of pixel values into pixel values lower than the reference value. The scattered ray image generation unit generates a scattered ray image based on the transformed image and a scattering function. The scattered ray reduced image generation unit generates a scattered ray reduced image with reduced scattered rays by using the medical image and the scattered ray image.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems Corporation
    Inventors: Yoshimasa KOBAYASHI, Hisanori KATO, Shumpei OHASHI
  • Publication number: 20130237810
    Abstract: An X-ray image diagnostic apparatus includes an X-ray imager, an image data generator, a position information acquisition mechanism, a position information corrector, and a display. The X-ray imager generates projection data by X-ray imaging in first and second imaging modes for a patient. The image data generator generates reference image data based on projection data in the first imaging mode and image data for positional deviation correction based on projection data in the second imaging mode. The position information acquisition mechanism acquires position information of a treatment device inserted into the patient. The position information corrector corrects the position information of the treatment device based on the position information of the treatment device and treatment device information of the image data for positional deviation correction, collected by X-ray imaging in the second imaging mode. The display displays the reference image data to which the corrected position information is added.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 12, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Haruki IWAI, Shingo Abe, Shumpei Ohashi, Satoru Ohishi