Patents by Inventor Yukinobu Sakata

Yukinobu Sakata 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: 9830718
    Abstract: According to some embodiments, an image processor includes an image generator, a region acquirer, and a label applicator. The region acquirer acquires at least one two-dimensional region designated on at least one first perspective image generated from three-dimensional volume data of a target. The label applicator applies a label on at least one first three-dimensional region. The at least one first three-dimensional region is a part of a second three-dimensional region. The second three-dimensional region is defined by the at least one two-dimensional region, a point and a surface which is defined by a set of straight lines between the point and the boundary of the two-dimensional region. The first three-dimensional region is defined to be a first overlapping region where the three-dimensional volume data and the second three-dimensional region overlap.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: November 28, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryusuke Hirai, Yukinobu Sakata, Yasunori Taguchi, Tomoyuki Takeguchi
  • Publication number: 20170296843
    Abstract: A processing device for a radiation device is configured to carry out the steps of retrieving, from a data storage, volume data of a subject that was generated by imaging an internal structure of the subject, determining a position of an object in the subject based on the retrieved volume data of the subject, obtaining geometry information including a position of a radiation source and a position of a radiation detector, and obtaining a direction of the radiation detector, and determining a condition for imaging with the radiation source, so that the object can be captured through the imaging, based on the volume data, the position of the object, the position of the radiation source, the position of the radiation detector, and the direction of the radiation detector.
    Type: Application
    Filed: December 29, 2016
    Publication date: October 19, 2017
    Inventors: Yasunori TAGUCHI, Ryusuke HIRAI, Yukinobu SAKATA
  • Patent number: 9786054
    Abstract: According to an embodiment, a medical image processing device includes a processor, and a memory. The memory that stores processor-executable instructions that, when executed by the processor, cause the processor to execute acquiring a first perspective image of a subject viewed in a first direction; setting a first region and a second region on the first perspective image, the first region including a first group of pixels around a target pixel, the second region including a second group of pixels, the second group including a pixel not included in the first group; calculating a likelihood of the target pixel, wherein the likelihood increases as a difference between pixel values included in the first group decreases and a difference between pixel values of the first group and the second group increases; and detecting a position of an object in the subject based on the likelihood.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 10, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasunori Taguchi, Takeshi Mita, Ryusuke Hirai, Kyoka Sugiura, Tomoyuki Takeguchi, Yukinobu Sakata
  • Publication number: 20170249532
    Abstract: A medical-image processing apparatus according to an embodiment includes processing circuitry. The processing circuit acquires an initial value of an outline corresponding vector that corresponds to an outline of a subject included in medical image data. The processing circuitry updates the outline corresponding vector based on a derivative that is acquired by differentiating a cost function with respect to the outline corresponding vector by the outline corresponding vector, and on the initial value of the outline corresponding vector.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 31, 2017
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Tomoya OKAZAKI, Yukinobu SAKATA
  • Publication number: 20170245835
    Abstract: An ultrasound diagnosis apparatus includes processing circuitry. The processing circuitry obtains three-dimensional medical image data, taken by using an ultrasound probe, of a region including a heart valve of a patient and a catheter inserted into a heart chamber of the patient. The processing circuitry determines an advancing direction of a tip end part of the catheter by obtaining information on a position and a posture of the tip end part included in the three-dimensional medical image data, by using at least one selected from shape information indicating the shape of the tip end part and reflection characteristic information indicating ultrasound reflection characteristics of the tip end part. The processing circuitry generates a display image from the three-dimensional medical image data in accordance with the position and the advancing direction of the tip end part. The processing circuitry causes the display image to be displayed.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 31, 2017
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Tomoya OKAZAKI, Yasuhiko ABE, Koji ANDO, Shogo FUKUDA, Yurika OGAWA, Yukinobu SAKATA, Yasunori TAGUCHI
  • Publication number: 20170231586
    Abstract: A medical image processing apparatus, includes: a reconstructed moving image obtainer that obtains a reconstructed moving image; a focus region identifier that identifies a first focus region corresponding to the designated focus; a fluoroscopic moving image obtainer that obtains at least one-period data on a fluoroscopic moving image; a second characteristics identifier that identifies each of two or more second characteristics regions corresponding to the internal body portion; a comparison selector that compares the two or more first characteristic regions; a conversion parameter calculation unit that calculates a conversion parameter for converting the first characteristic region.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Applicants: KABUSHIKI KAISHA TOSHIBA, National Institutes for Quantum and Radiological Science and Technology
    Inventors: Ryusuke HIRAI, Yukinobu Sakata, Yasunori Taguchi, Fumi Maruyama, Shinichiro Mori
  • Patent number: 9734574
    Abstract: According to some embodiments, an image processor of an embodiment has an imaging parameter acquirer and a virtual perspective image generator. The imaging parameter acquirer acquires an imaging parameter which is used by a radiographic imaging apparatus in capturing a perspective image of a target. The virtual perspective image generator determines a method of generating a virtual perspective image from volume data acquired by capturing the target in accordance with the imaging parameter. The virtual perspective image generator generates the virtual perspective image from the volume data in accordance with the determined method.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: August 15, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoka Sugiura, Yukinobu Sakata, Ryusuke Hirai, Yasunori Taguchi, Takeshi Mita, Tomoyuki Takeguchi
  • Patent number: 9675818
    Abstract: A medical image processing apparatus includes: a receiver which receives target image data that is including a first perspective image and a second perspective image, photographing an object from different directions; a first acquirer which acquires positional information of a specified point on the first perspective image; a second acquirer which acquires positional information of a candidate point on the second perspective image, the candidate point corresponding to the specified point; and a generator which generates a first enlarged image obtained by enlarging a part of the first perspective image neighboring the specified point and a second enlarged image obtained by enlarging a part of the second perspective image neighboring the candidate point.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: June 13, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryusuke Hirai, Yukinobu Sakata, Yasunori Taguchi, Kyoka Sugiura, Atsushi Yaguchi
  • Patent number: 9616250
    Abstract: According to an embodiment, a treatment system includes a plurality of first radiators, a plurality of detectors, a determiner, and a controller. Each of the first radiators irradiates a radioactive beam to a subject. Each of the detectors detects a radioactive beam transmitted through the subject and generates an image based on the detected radioactive beam. The determiner determines whether an object in the subject is included in a first region using a given image that is one of the images. The controller controls the first radiators so that, when the object is not included in the first region, a smaller amount of radioactive beams is irradiated per unit time than when the object is included in the first region.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: April 11, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasunori Taguchi, Takeshi Mita, Yukinobu Sakata, Tomoyuki Takeguchi
  • Patent number: 9582884
    Abstract: According to an image processor of one embodiment, a first acquirer acquires a first perspective image of a target, which has a first resolution. A second acquirer acquires a second perspective image of the target, which has a second resolution. A first image generator generates first and second display images respectively from the first and second perspective images. The first and third display images have a third resolution lower than at least one of the first and second resolutions. A first point acquirer acquires first and second corresponding points respectively on the first and second display images. A first corrector searches, on the second perspective image, a second image similar to a first image on the first perspective image, the first image including the first corresponding point, and changes, on the second perspective image, a position of the second corresponding point to a position of the second image.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: February 28, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryusuke Hirai, Yukinobu Sakata, Yasunori Taguchi, Takeshi Mita
  • Publication number: 20170046856
    Abstract: A radiotherapy apparatus includes an receiver receiving a first projection image of a calibration object under X-ray imaging; a storing portion storing an ideal projection image of the calibration object, the ideal projection image generated based on design information of an X-ray imaging structure, positional information of the calibration object, and volume data of the calibration object; a calculator calculating a transformation parameter for transforming the first projection image into an ideal projection image; a transformed image generator generating a transformed projection image of the patient by transforming a second projection image of a patient obtained under X-ray imaging with the transformation parameter; a reconstructed image generator generating a reconstructed projection image based on volume data of the patient, positional information of the patient, and the design information; and a matching image generator generating a matching reference image used for matching between the transformed proje
    Type: Application
    Filed: August 10, 2016
    Publication date: February 16, 2017
    Applicants: Kabushiki Kaisha Toshiba, National Institutes for Quantum and Radiological Science and Technology
    Inventors: Ryusuke HIRAI, Yukinobu SAKATA, Yasunori TAGUCHI, Tomoyuki TAKEGUCHI, Shinichiro MORI, Fumi MARUYAMA
  • Patent number: 9533172
    Abstract: According to some embodiments, an image processor includes a perspective image generator, a perspective image acquirer, a corresponding point acquirer, a first calculator and a display image generator. The first calculator updates the position of the one or more first corresponding point on the first perspective image, based on a difference in position between the first and second perspective images. The display image generator generates a first display image including the first and second perspective images, the one or more first corresponding points updated on the first perspective image, and the one or more second corresponding points on the second perspective image. The perspective image generator changes the first direction into a third direction based on the difference in position between the first and second perspective images, and generates an updated one, viewed in the third direction, of the first perspective image.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: January 3, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoka Sugiura, Ryusuke Hirai, Yukinobu Sakata, Yasunori Taguchi, Takeshi Mita
  • Publication number: 20160175614
    Abstract: A medical image processing apparatus of an embodiment has acquisitor, a first landmark detector, and an estimator. The acquisitor acquires a perspective image of an object to be treated imaged by an imaging apparatus. The first landmark detector detects a position of a landmark that appears in the perspective image acquired by the acquisitor. The estimator, based on relationship information indicating a relationship between the position of landmark and the position of a target, estimates the position of the search-for location of the object to be treated from the position of the landmark detected by the first landmark detector.
    Type: Application
    Filed: September 8, 2015
    Publication date: June 23, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasunori Taguchi, Ryusuke Hirai, Yukinobu Sakata, Kyoka Sugiura
  • Publication number: 20160155228
    Abstract: A medical image generation apparatus includes: a three-dimensional image acquisition unit that acquires a three-dimensional image in which a space including a patient is captured; an imparting unit that imparts, to each of voxels constituting the three-dimensional image, a living-body likelihood coefficient indicating a likelihood of being a living-body region of the patient; an updating unit that updates a luminance value of the voxel in which the imparted living-body likelihood coefficient shows a given value, through predetermined processing; a virtual viewpoint setting unit that sets a virtual viewpoint for transforming the three-dimensional image into a two-dimensional radiation image; and a radiation image generation unit that calculates a luminance value of a pixel constituting the radiation image based on the luminance value of the voxel existing along a line connecting each of the corresponding pixels and the virtual viewpoint.
    Type: Application
    Filed: November 27, 2015
    Publication date: June 2, 2016
    Applicants: KABUSHIKI KAISHA TOSHIBA, National Institute of Radiological Sciences
    Inventors: Yukinobu SAKATA, Ryusuke HIRAI, Kyoka SUGIURA, Yasunori TAGUCHI, Tomoyuki TAKEGUCHI, Shinichiro MORI, Fumi MARUYAMA
  • Publication number: 20160148401
    Abstract: According to some embodiments, an image processor includes an image generator, a region acquirer, and a label applicator. The region acquirer acquires at least one two-dimensional region designated on at least one first perspective image generated from three-dimensional volume data of a target. The label applicator applies a label on at least one first three-dimensional region. The at least one first three-dimensional region is a part of a second three-dimensional region. The second three-dimensional region is defined by the at least one two-dimensional region, a point and a surface which is defined by a set of straight lines between the point and the boundary of the two-dimensional region. The first three-dimensional region is defined to be a first overlapping region where the three-dimensional volume data and the second three-dimensional region overlap.
    Type: Application
    Filed: September 8, 2015
    Publication date: May 26, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Ryusuke HIRAI, Yukinobu SAKATA, Yasunori TAGUCHI, Tomoyuki TAKEGUCHI
  • Publication number: 20160136458
    Abstract: According to one embodiment, a medical image processing apparatus, includes: a first acquisition unit; a second acquisition unit; and a part-removed image generation unit, wherein the first acquisition unit is adapted to acquire a first radiograph that is a virtual radiograph generated to have a specified part or a predetermined part, among parts included in volume data indicative of a three-dimensional structure of an inside of a body of a patient, being emphasized, the second acquisition unit is adapted to acquire a second radiograph of the inside of the body of the patient, and the part-removed image generation unit is adapted to generate a part-removed image by removing the specified or predetermined part or parts other than the specified or predetermined part from the second radiograph with reference to the first radiograph.
    Type: Application
    Filed: November 18, 2015
    Publication date: May 19, 2016
    Applicants: Kabushiki Kaisha Toshiba, National Institute of Radiological Sciences
    Inventors: Yasunori TAGUCHI, Yukinobu SAKATA, Ryusuke HIRAI, Kyoka SUGIURA, Tomoyuki TAKEGUCHI, Shinichiro MORI, Fumi MARUYAMA
  • Publication number: 20160140738
    Abstract: According to one embodiment, a medical image processing apparatus includes storage circuitry and processing circuitry. The storage circuitry stores a plurality of images acquired by transmitting ultrasonic waves in different scanning parameters to a target region. The processing circuitry separates a pixel value of a pixel in the images into at least two components. The processing circuitry forms a compound image concerning to the images by using at least one of the components.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 19, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Saori ASAKA, Satoshi KAWATA, Yukinobu SAKATA, Toshiyuki ONO, Nobuyuki MATSUMOTO
  • Publication number: 20160109544
    Abstract: A magnetic resonance apparatus of the present embodiment includes: a gantry which includes a static field magnet, a gradient coil and an RF coil to image an object; processing circuitry; a memory that stores processor-executable instructions that, when executed by the processing circuitry, cause the p processing circuitry to detect at least one position of an aortic valve and a pulmonary valve from three-dimensional image data including a heart of the object, as at least one characteristic region inside the heart, specify a position of an imaging cross-section substantially orthogonal to a bloodstream path inside the heart based on the position of the aortic valve or the pulmonary valve, and cause the gantry to image the imaging cross-section of the object at the specified position of the imaging cross-section.
    Type: Application
    Filed: December 22, 2015
    Publication date: April 21, 2016
    Inventors: Shigehide KUHARA, Shuhei NITTA, Taichiro SHIODERA, Yukinobu SAKATA, Tomoyuki TAKEGUCHI
  • Publication number: 20160093044
    Abstract: A medical diagnosis apparatus of embodiments includes a scanner and processing circuitry. The scanner configured to scan a three-dimensional region including a target region and acquire data of the three-dimensional region. The processing circuitry is configured to discretely arrange fixed points framing three-dimensional shape of the target region in a first medical image based on the data. The processing circuitry is configured to set a boundary of region of interest (ROI) on the three-dimensional shape of the target region according to a position of the fixed point. The processing circuitry is configured to receive an instruction to change a position of the boundary from an input device controlled by a user. The processing circuitry is configured to change the position of the boundary based on a position or positions of at least one of the fixed points according to the instruction while maintaining positions of the fixed points.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 31, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tomoya OKAZAKI, Yukinobu SAKATA, Tomoyuki TAKEGUCHI, Yasuhiko ABE
  • Publication number: 20160093095
    Abstract: A medical diagnostic apparatus according to one embodiment comprises processing circuitry. The processing circuitry is configured to acquire a three-dimensional shape of a first part based on a contour of the first part in each of a plurality of sectional images intersecting each other along an extending direction of the first part connecting to a cardiac chamber; acquire a three-dimensional shape of a second part, based on a contour of the second part in a sectional image along an extending direction of the second part connecting to the cardiac chamber; and generate a three-dimensional image representing at least some of the first part, the second part, and the cardiac chamber using a three-dimensional shape representing the cardiac chamber and the three-dimensional shapes of the first part and the second part acquired.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 31, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Tomoya OKAZAKI, Yukinobu SAKATA, Tomoyuki TAKEGUCHI