Patents by Inventor Takao Kuwabara

Takao Kuwabara 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: 11272896
    Abstract: A radiographic image capturing system includes: a mammography apparatus that emits radiation having a first energy to a subject and captures a first radiographic image with a radiation detector and emits radiation having a second energy greater than the first energy to the subject and captures a second radiographic image with the radiation detector and that captures the first radiographic image and the second radiographic image with a breast in a state in which a contrast medium using iodine is administered. The radiographic image capturing system includes a phantom for evaluation of the mammography apparatus that has a solid material containing at least one element, which has a value of a k absorption edge that is equal to or greater than the first energy and equal to or less than the second energy, as an image evaluation pattern simulating the contrast medium.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 15, 2022
    Assignee: FUJIFILM CORPORATION
    Inventor: Takao Kuwabara
  • Patent number: 11154265
    Abstract: A radiographic image capturing system including (i) an instruction unit, (ii) a mammography apparatus that performs contrast imaging so as to compress a breast, by a compression plate, and to continuously execute first imaging, in which a first radiographic image is generated, and second imaging, in which radiation a second radiographic image is generated, and (iii) a controller that performs control to have the mammography apparatus perform the contrast imaging in a case in which an instruction signal is inputted into, and a period during which outputting of the instruction signal is stopped does not exceed a predetermined time, and to display information indicating a predetermined warning on a display unit prior to an interruption of contrast imaging, in a case in which the instruction signal is stopped before the second imaging is completed after start of the first imaging.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: October 26, 2021
    Assignee: FUJIFILM CORPORATION
    Inventor: Takao Kuwabara
  • Patent number: 10772596
    Abstract: A radiography system includes a radiography apparatus including two radiation detectors and a console that corrects scattered ray components of a first radiographic image generated by the radiography apparatus, using first correction data, corrects scattered ray components of a second radiographic image, using second correction data different from first correction data, and performs an energy subtraction process, using the corrected first and second radiographic images.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: September 15, 2020
    Assignee: FUJIFILM CORPORATION
    Inventor: Takao Kuwabara
  • Publication number: 20200155104
    Abstract: A radiographic image capturing system includes: a mammography apparatus that emits radiation having a first energy to a subject and captures a first radiographic image with a radiation detector and emits radiation having a second energy greater than the first energy to the subject and captures a second radiographic image with the radiation detector and that captures the first radiographic image and the second radiographic image with a breast in a state in which a contrast medium using iodine is administered. The radiographic image capturing system includes a phantom for evaluation of the mammography apparatus that has a solid material containing at least one element, which has a value of a k absorption edge that is equal to or greater than the first energy and equal to or less than the second energy, as an image evaluation pattern simulating the contrast medium.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventor: Takao KUWABARA
  • Publication number: 20200155100
    Abstract: A radiographic image capturing system including (i) an instruction unit, (ii) a mammography apparatus that performs contrast imaging so as to compress a breast, by a compression plate, and to continuously execute first imaging, in which a first radiographic image is generated, and second imaging, in which radiation a second radiographic image is generated, and (iii) a controller that performs control to have the mammography apparatus perform the contrast imaging in a case in which an instruction signal is inputted into, and a period during which outputting of the instruction signal is stopped does not exceed a predetermined time, and to display information indicating a predetermined warning on a display unit prior to an interruption of contrast imaging, in a case in which the instruction signal is stopped before the second imaging is completed after start of the first imaging.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventor: Takao KUWABARA
  • Publication number: 20200146652
    Abstract: An acoustic matching member configured to be disposed between a breast placed on an imaging table and a compression plate disposed opposite to the imaging table is proposed. The acoustic matching member includes a protruding portion that protrudes toward the imaging table and that is provided in an end portion on a deepest side when viewed from a chest wall side of a subject in a case of compressing a breast of the subject in contact with the compression plate.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Takahisa ARAI, Takeyasu KOBAYASHI, Takao KUWABARA
  • Patent number: 10588600
    Abstract: An acoustic matching member configured to be disposed between a breast placed on an imaging table and a compression plate disposed opposite to the imaging table is proposed. The acoustic matching member includes a protruding portion that protrudes toward the imaging table and that is provided in an end portion on a deepest side when viewed from a chest wall side of a subject in a case of compressing a breast of the subject in contact with the compression plate.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 17, 2020
    Assignee: FUJIFILM CORPORATION
    Inventors: Takahisa Arai, Takeyasu Kobayashi, Takao Kuwabara
  • Publication number: 20190290234
    Abstract: A radiography system includes a radiography apparatus including two radiation detectors and a console that corrects scattered ray components of a first radiographic image generated by the radiography apparatus, using first correction data, corrects scattered ray components of a second radiographic image, using second correction data different from first correction data, and performs an energy subtraction process, using the corrected first and second radiographic images.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 26, 2019
    Inventor: Takao KUWABARA
  • Patent number: 10299749
    Abstract: An irradiation condition setting section 52 sets irradiation conditions corresponding to the emission angle of radiation emitted from a radiation source 26. The radiation source 26 emits radiation to a breast at a plurality of different emission angles based on the set irradiation conditions. A radiation detector 36 generates a plurality of projection images corresponding to the plurality of emission angles. An image correction section 56 corrects each projection image such that a difference between at least either contrasts or density values in the plurality of projection images is reduced. A reconstruction unit 58 reconstructs a tomographic image based on the plurality of corrected projection images.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 28, 2019
    Assignee: FUJIFILM CORPORATION
    Inventors: Wataru Fukuda, Takao Kuwabara
  • Patent number: 10274617
    Abstract: A radiographic imaging device includes a radiation detection element including plural same sized hexagonal shaped pixels that detect radiation and are arrayed in a honeycomb pattern, and a pixel density conversion section that performs interpolation processing such that first image data obtained from the radiation detection element is converted into second image data representing an image in which plural pixels are arrayed in a square grid pattern, wherein when d1max denotes the length of the longest diagonal of the hexagonal shaped pixels, S1 denotes the surface area of the hexagonal shaped pixels, and d2max denotes the length of the diagonals of the square grid of the second image data, d1max is equal to or greater than d2max, and d2max is equal to or greater than the value of the square root of S1.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: April 30, 2019
    Assignee: FUJIFILM CORPORATION
    Inventors: Yoshihiro Okada, Takao Kuwabara
  • Patent number: 9883844
    Abstract: A breast thickness measuring apparatus and a breast thickness measuring method are applied to a radiographic image capturing system. After a breast, which is placed on a support table, has been compressed by a compression plate having a marker disposed thereon, the breast is irradiated with radiation emitted from a radiation source. A radiographic image is generated on the basis of radiation that has passed through the breast, and a marker image, which is included within the radiographic image, is detected by a marker detector. Finally, the thickness of the compressed breast is calculated by a thickness calculator on the basis of a position of the detected marker image, a position of the radiation source, and information concerning the compression plate.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: February 6, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Takao Kuwabara
  • Publication number: 20170281124
    Abstract: An acoustic matching member configured to be disposed between a breast placed on an imaging table and a compression plate disposed opposite to the imaging table is proposed. The acoustic matching member includes a protruding portion that protrudes toward the imaging table and that is provided in an end portion on a deepest side when viewed from a chest wall side of a subject in a case of compressing a breast of the subject in contact with the compression plate.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Takahisa ARAI, Takeyasu KOBAYASHI, Takao KUWABARA
  • Patent number: 9510794
    Abstract: A radiation image capture device is provided that are capable of obtaining radiation images with better image quality than hitherto in both an imaging mode in which a radiation irradiation duration is comparatively short and radiation images are successively captured, and in an imaging mode in which the radiation irradiation duration is comparatively long. An erasing light source is deactivated throughout an imaging period in a first imaging mode in which a radiation detector generates image data of a radiation image based on radiation irradiated from a radiation source over a first irradiation duration. The erasing light source is activated over an imaging period in a second imaging mode in which the radiation detector generates image data of plural radiation images based on successively irradiated radiation from the radiation source over a second irradiation duration shorter than the first irradiation duration.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 6, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Takao Kuwabara
  • Patent number: 9510801
    Abstract: In a case where a series of operations of an imaging sequence are continuously performed when an imaging switch is continuously in ON state, if the imaging switch is turned into OFF state only for a given period and the given period is not more than a predetermined threshold value, control is exerted such that part of the operations of the imaging sequence is continuously performed.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: December 6, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Takao Kuwabara, Yasunori Ohta, Yasuko Yahiro
  • Publication number: 20160206264
    Abstract: An irradiation condition setting section 52 sets irradiation conditions corresponding to the emission angle of radiation emitted from a radiation source 26. The radiation source 26 emits radiation to a breast at a plurality of different emission angles based on the set irradiation conditions. A radiation detector 36 generates a plurality of projection images corresponding to the plurality of emission angles. An image correction section 56 corrects each projection image such that a difference between at least either contrasts or density values in the plurality of projection images is reduced. A reconstruction unit 58 reconstructs a tomographic image based on the plurality of corrected projection images.
    Type: Application
    Filed: March 24, 2016
    Publication date: July 21, 2016
    Inventors: Wataru FUKUDA, Takao KUWABARA
  • Publication number: 20160073996
    Abstract: In a case where a series of operations of an imaging sequence are continuously performed when an imaging switch is continuously in ON state, if the imaging switch is turned into OFF state only for a given period and the given period is not more than a predetermined threshold value, control is exerted such that part of the operations of the imaging sequence is continuously performed.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Takao KUWABARA, Yasunori OHTA, Yasuko YAHIRO
  • Patent number: 9226724
    Abstract: In a case where a series of operations of an imaging sequence are continuously performed when an imaging switch is continuously in ON state, if the imaging switch is turned into OFF state only for a given period and the given period is not more than a predetermined threshold value, control is exerted such that part of the operations of the imaging sequence is continuously performed.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: January 5, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Takao Kuwabara, Yasunori Ohta, Yasuko Yahiro
  • Patent number: 9155511
    Abstract: In a breast image capturing apparatus having an arm section for moving a radiation source in a left-right direction in front of a subject, providing a shielding member for preventing radiation from being applied to the face of the subject on an arm section, and supporting the shielding member movably relative to the arm section when the face of the subject is abutted to the shielding member and fixedly relative to the arm section when the face of the subject is not abutted to the shielding member.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: October 13, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Yasunori Ohta, Takao Kuwabara, Yasuko Yahiro
  • Publication number: 20150265186
    Abstract: A breast thickness measuring apparatus and a breast thickness measuring method are applied to a radiographic image capturing system. After a breast, which is placed on a support table, has been compressed by a compression plate having a marker disposed thereon, the breast is irradiated with radiation emitted from a radiation source. A radiographic image is generated on the basis of radiation that has passed through the breast, and a marker image, which is included within the radiographic image, is detected by a marker detector. Finally, the thickness of the compressed breast is calculated by a thickness calculator on the basis of a position of the detected marker image, a position of the radiation source, and information concerning the compression plate.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 24, 2015
    Applicant: FUJIFILM Corporation
    Inventor: Takao KUWABARA
  • Patent number: 9079027
    Abstract: A radiation irradiation device is provided that includes: a metal target that emits bremsstrahlung X-rays as a radiation beam due to irradiation with an electron beam; a radiation shielding member that includes a slit-shaped radiation passage portion and that is disposed downstream of the metal target in the radiation beam emission direction and is disposed such that a portion of the radiation beam passes through the radiation passage portion and the radiation beam incident to regions other than the radiation passage portion is blocked; and an electron beam generating device that irradiates, onto the metal target, an electron beam such that a diameter at a generation point of the emitted radiation beam is smaller than a length of an entry portion of the radiation passage portion along a length direction of the entry portion.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: July 14, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Toshitaka Agano, Takao Kuwabara, Hitoshi Shimizu