Patents by Inventor Toshihiro Rifu

Toshihiro Rifu 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: 10937209
    Abstract: Provided are a tomography imaging apparatus and a method of reconstructing a tomography image which may more accurately measure a motion of an object to be tomography-imaged. In detail, the tomography imaging apparatus and the method of reconstructing a tomography image may obtain information indicating a motion of a moving object according to a time, may perform motion correction based on the obtained motion information, and may reconstruct a target image with reduced motion artifacts.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: March 2, 2021
    Assignees: HITACHI, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Duhgoon Lee, Jong Beom Ra, Kyoung-yong Lee, Toshihiro Rifu, Seungeon Kim, Seokhwan Jang
  • Patent number: 10748293
    Abstract: A tomography apparatus includes a data acquirer configured to acquire partial images of an object including a first image and a second image having imaged a surface of a portion of the object corresponding to a first time and a second time, respectively, by performing a tomography scan on the object that is moving, and acquire first information indicating motion of the object by using the first image and the second image; and an image reconstructor configured to reconstruct a target image by using the first information.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: August 18, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Beom Ra, Seungeon Kim, Kyoung-yong Lee, Toshihiro Rifu, Jonghyon Yi, Iljun Ahn, Yongjin Chang, Byung-sun Choi
  • Publication number: 20200240934
    Abstract: Disclosed is a tomography apparatus including a controller for estimating a Point Spread Function (PSF) corresponding to a location of an object; and an image processor for de-blurring projection data of the object based on the PSF corresponding to the location of the object.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 30, 2020
    Inventors: Jong Hyon YI, Toshihiro RIFU, Narayanan AJAY, Alexander ZAMYATIN
  • Patent number: 10383593
    Abstract: A tomography apparatus includes: an X-ray generator which emits X-rays; a controller which determines a first value based on a threshold dosage of the X-rays allowed for a subject and generates an absorbed-dose distribution diagram which indicates a location range of the subject in which, when the X-rays are irradiated to the subject based on an imaging condition, an absorbed dose of the X-ray has the first value; and an indicator showing the absorbed-dose distribution diagram.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-young Jung, Toshihiro Rifu, Chang-lae Lee
  • Patent number: 10361002
    Abstract: A method and apparatus for setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients are provided. The method of setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients includes transmitting information regarding an imaging operation of the medical apparatus to the plurality of clients, receiving one or more response signals with respect to the information from the plurality of clients, and setting the imaging environment of the medical apparatus based on the one or more response signals.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nasir Desai, Toshihiro Rifu, Yeon-ju Lee, Jin-mo Jung
  • Patent number: 10307129
    Abstract: Provided is a tomography apparatus including: a data acquisitor configured to obtain a first image by using tomography data acquired as a first X-ray generator for generating X-rays having a first energy rotates around an object over a first angular range and obtain a second image by using tomography data acquired as a second X-ray generator for generating X-rays having a second energy rotates around the object over a second angular range; a controller configured to acquire motion information representing an amount of motion of the object over time by using the first and second images; and an image reconstructor configured to reconstruct a target image showing the object at a target time point by using the motion information.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung-yong Lee, Do-il Kim, Toshihiro Rifu, Duhgoon Lee
  • Publication number: 20190122401
    Abstract: A system and method for estimating vascular flow using CT imaging include a computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to acquire a first set of data comprising anatomical information of an imaging subject, the anatomical information comprises information of at least one vessel. The instructions further cause the computer to process the anatomical information to generate an image volume comprising the at least one vessel, generate hemodynamic information based on the image volume, and acquire a second set of data of the imaging subject. The computer is also caused to generate an image comprising the hemodynamic information in combination with a visualization based on the second set of data.
    Type: Application
    Filed: December 17, 2018
    Publication date: April 25, 2019
    Inventors: Robert F. Senzig, Ravikanth Avancha, Bijan Dorri, Sandeep Dutta, Steven J. Gray, Jiang Hsieh, John Irvin Jackson, Giridhar Jothiprasad, Paul Edgar Licato, Darin Robert Okerlund, Toshihiro Rifu, Saad Ahmed Sirohey, Basel Taha, Peter Michael Edic, Jerome Knoplioch, Rahul Bhotika
  • Patent number: 10238355
    Abstract: A tomography apparatus includes a data obtainer and an image processor. The data obtainer performs a tomography scan on a moving object and obtains raw data of the object The image processor reconstructs a first tomography image of the object for a first slice section in a first phase from the raw data and reconstructs a second tomography image in a second phase, which is different from the first phase, for the first slice section of the object by using the raw data. The image processor also generates motion information indicating a three-dimensional (3D) motion of the object. The second phase is a phase beyond a phase range of the raw data.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-young Choi, Toshihiro Rifu, Kyoung-yong Lee, Duhgoon Lee
  • Patent number: 10213179
    Abstract: Provided are a tomography apparatus and a method for reconstructing a tomography image. The method includes obtaining a plurality of raw data corresponding to a plurality of views by performing a tomography scan on an object and deblurring each of the plurality of raw data based on a point spread function (PSF) that varies according to locations in a field of view (FOV) in a gantry. The method also includes reconstructing a final tomography image in which a motion of the object is corrected from the plurality of deblurred raw data based on a motion vector indicating the motion of the object.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hyon Yi, Toshihiro Rifu, Ajay Narayanan, Alexander Zamyatin, Seok-min Han
  • Patent number: 10186056
    Abstract: A system and method for estimating vascular flow using CT imaging include a computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to acquire a first set of data comprising anatomical information of an imaging subject, the anatomical information comprises information of at least one vessel. The instructions further cause the computer to process the anatomical information to generate an image volume comprising the at least one vessel, generate hemodynamic information based on the image volume, and acquire a second set of data of the imaging subject. The computer is also caused to generate an image comprising the hemodynamic information in combination with a visualization based on the second set of data.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: January 22, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Robert F. Senzig, Ravikanth Avancha, Bijan Dorri, Sandeep Dutta, Steven J. Gray, Jiang Hsieh, John Irvin Jackson, Giridhar Jothiprasad, Paul Edgar Licato, Darin Robert Okerlund, Toshihiro Rifu, Saad Ahmed Sirohey, Basel Taha, Peter Michael Edic, Jerome Knoplioch, Rahul Bhotika
  • Patent number: 10165989
    Abstract: A tomography apparatus includes a data obtainer configured to obtain first image data at a first point and second image data at a second point using tomography, the tomography being performed by irradiating an X-ray to an object; an image processor configured to perform noise reduction based on at least one from among the first image data and the second image data, and to obtain a first reference image corresponding to the first image data and a second reference image corresponding to the second image data using a result of the performed noise reduction; and an image reconstructor configured to reconstruct a target image representing the object based on the first reference image and the second reference image.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: January 1, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chan-won Seo, Toshihiro Rifu, Duhgoon Lee, Do-il Kim, Sang-nam Nam, Kyoung-yong Lee
  • Patent number: 10105118
    Abstract: An apparatus and a method of processing a medical image are provided. The apparatus is configured to generate a cross-sectional image of an object by transmitting X-rays through a region of the object, and includes an X-ray generator configured to generate the X-rays. The apparatus further includes a controller configured to determine sub-regions included in the region, based on positions of body parts included in the region, determine image qualities of the sub-regions based on types of the body parts included in the sub-regions, control doses of the X-rays based on the image qualities, and control the X-ray generator to transmit the controlled X-rays to the region.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-young Jung, Toshihiro Rifu, Gun-woo Lee, Jong-hyon Yi, Chang-lae Lee
  • Patent number: 10098602
    Abstract: An apparatus includes an image analysis unit arranged to extract, from the medical image, brightness intensities of a first body lumen region of the medical image and brightness intensities of a second body lumen region of the medical image; and a measuring unit arranged to calculate a first body lumen value and a second body lumen value, each of the first body lumen value and a second body lumen value being calculated as a predetermined linear combination of the brightness intensities of the corresponding first body lumen region and second body lumen region, and to compare the first body lumen value with the second body lumen value.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: October 16, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Duhgoon Lee, Toshihiro Rifu
  • Patent number: 10052077
    Abstract: A tomography imaging apparatus and a tomography imaging method are provided. The tomography imaging apparatus includes a data acquirer configured to acquire first X-ray data of an object for each of energy bands, and an image preprocessor configured to perform a beam hardening correction on the first X-ray data for each of the energy bands, to generate second X-ray data of the object. The tomography imaging apparatus further includes an image reconstructor configured to reconstruct a tomography image of the object based on the second X-ray data.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-wook Jung, Toshihiro Rifu, Min-kook Cho, Eun-ji Seo, Kwan-hee Han
  • Patent number: 10032293
    Abstract: A computed tomography (CT) apparatus includes a data acquirer configured to acquire a first image corresponding to a first time point, a second image corresponding to a second time point, and a third image corresponding to a third time point based on a result of a CT scan on an object; an image reconstructor configured to acquire motion information of the object based on an amount of movement of the object between the first and second images and an amount of movement of the object between the first and third images, and obtain a target image by correcting at least one of the first, second and third images based on the motion information; and a display configured to display the target image.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: July 24, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Toshihiro Rifu, Kyoung-yong Lee
  • Publication number: 20180204330
    Abstract: A tomography apparatus includes a data acquirer configured to acquire partial images of an object including a first image and a second image having imaged a surface of a portion of the object corresponding to a first time and a second time, respectively, by performing a tomography scan on the object that is moving, and acquire first information indicating motion of the object by using the first image and the second image; and an image reconstructor configured to reconstruct a target image by using the first information.
    Type: Application
    Filed: March 15, 2018
    Publication date: July 19, 2018
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Beom RA, Seungeon KIM, Kyoung-yong LEE, Toshihiro RIFU, Jonghyon YI, Iljun AHN, Yongjin CHANG, Byung-sun CHOI
  • Publication number: 20180190379
    Abstract: A method and apparatus for setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients are provided. The method of setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients includes transmitting information regarding an imaging operation of the medical apparatus to the plurality of clients, receiving one or more response signals with respect to the information from the plurality of clients, and setting the imaging environment of the medical apparatus based on the one or more response signals.
    Type: Application
    Filed: February 23, 2018
    Publication date: July 5, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nasir DESAI, Toshihiro RIFU, Yeon-ju LEE, Jin-mo JUNG
  • Patent number: 10013778
    Abstract: A tomography apparatus includes a data acquirer configured to obtain a first partial image and a second partial image of an object based on data that is obtained respectively at a first angular section corresponding to a first time and at a second angular section corresponding to a second time during a tomography scan of the object that is moving, a controller configured to determine first information indicating a motion amount of the object in a first area of an entire image based on the first partial image and the second partial image, and determine second information indicating a degree of blur of a point included in the object in the first area based on the first information, and an image processor configured to correct the first area based on the first information and the second information, and output a tomography image based on the corrected first area.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: July 3, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-wook Yoo, Ajay Narayanan, Toshihiro Rifu, Gun-woo Lee, Jong-hyon Yi
  • Publication number: 20180182135
    Abstract: Provided are a tomography imaging apparatus and a method of reconstructing a tomography image which may more accurately measure a motion of an object to be tomography-imaged. In detail, the tomography imaging apparatus and the method of reconstructing a tomography image may obtain information indicating a motion of a moving object according to a time, may perform motion correction based on the obtained motion information, and may reconstruct a target image with reduced motion artifacts.
    Type: Application
    Filed: August 3, 2016
    Publication date: June 28, 2018
    Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Duhgoon LEE, Jong Beom RA, Kyoung-yong LEE, Toshihiro RIFU, Seungeon KIM, Seokhwan JANG
  • Patent number: 9959631
    Abstract: A tomography apparatus includes a data acquirer acquiring a first image and a second image that are partial images, by using data acquired in a first angular section corresponding to a first time point and a second angular section corresponding to a second time and facing the first angular section, by performing a tomography scan on an object that is moving, and acquiring first information indicating a motion amount of the object by using the first image and the second image, and an image reconstructor reconstructing a target image indicating the object at a target time, based on the first information.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: May 1, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Beom Ra, Seungeon Kim, Kyoung-yong Lee, Toshihiro Rifu, Jonghyon Yi, Iljun Ahn, Yongjin Chang, Byung-sun Choi