Patents by Inventor Kazuki Matsuzaki

Kazuki Matsuzaki 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: 11127153
    Abstract: A radiographic imaging apparatus acquires a plurality of two-dimensional pickup images taken at different angles and a three-dimensional image of a processing target imaged in advance. Two-dimensional calculated projection images are generated from the three-dimensional image, respectively, in association with the two-dimensional pickup images. A characteristic region indicates a treatment instrument represented in the two-dimensional pickup image. The two-dimensional pickup image is aligned with the calculated projection image. A deformation amount of the processing target in the two-dimensional pickup image is calculated by comparing the two-dimensional pickup image with the calculated projection image, and a position of the characteristic region is corrected. A three-dimensional position of the characteristic region is calculated and corrected on the basis of anatomical structure information of the processing target.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 21, 2021
    Assignee: HITACHI, LTD.
    Inventor: Kazuki Matsuzaki
  • Publication number: 20200226779
    Abstract: A radiographic imaging apparatus acquires a plurality of two-dimensional pickup images taken at different angles and a three-dimensional image of a processing target imaged in advance. Two-dimensional calculated projection images are generated from the three-dimensional image, respectively, in association with the two-dimensional pickup images. A characteristic region indicates a treatment instrument represented in the two-dimensional pickup image. The two-dimensional pickup image is aligned with the calculated projection image. A deformation amount of the processing target in the two-dimensional pickup image is calculated by comparing the two-dimensional pickup image with the calculated projection image, and a position of the characteristic region is corrected. A three-dimensional position of the characteristic region is calculated and corrected on the basis of anatomical structure information of the processing target.
    Type: Application
    Filed: August 8, 2018
    Publication date: July 16, 2020
    Inventor: Kazuki MATSUZAKI
  • Patent number: 10085707
    Abstract: The present invention correlates information, to be processed, about an organ and/or a disease, etc., obtained from a medical image and anatomical/functional medical knowledge information, and enables the information obtained from the medial image to be effectively utilized in medical examination and treatment processes. In a medical image information system (101), an image processing unit (103) processes an image, a graph model creation unit (104) creates a graph data model from the information obtained from the image, a graph data model processing unit (106) acquires a graph data model based on anatomical/functional medical knowledge, compares with each other and integrates the graph data models and stores an integrated graph data model, and a display processing unit (110) displays the integrated graph data model, whereby the effective use of information obtained from the image is made possible.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: October 2, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Kazuki Matsuzaki, Yuuichi Morimoto, Wataru Takeuchi, Kikuo Umegaki, Tohru Shiga, Koichi Yasuda
  • Patent number: 9795806
    Abstract: Visualizing a deformation amount or displacement amount of a region of interest in therapy rendered in an image upon aligning images used in radiation therapy allows for enhancing an accuracy of alignment. In a positioning system 104, an image processing unit 201 calculates a deformation parameter using a non-rigid registration method for a region of interest having been set by a treatment planning device 101 based on a treatment plan CT image and three-dimensional tomographic image imaged for bed positioning and calculates a displacement amount parameter for a region extracted using a region extraction method. The image processing unit 201 calculates a positioning parameter representing a displacement amount of a bed based on the calculated deformation parameter and displacement amount parameter and displays the respective parameters together with an alignment image, thereby allowing for confirmation of the deformation amount and displacement amount.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 24, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Kazuki Matsuzaki, Toru Umekawa
  • Publication number: 20170042495
    Abstract: The present invention correlates information, to be processed, about an organ and/or a disease, etc., obtained from a medical image and anatomical/functional medical knowledge information, and enables the information obtained from the medial image to be effectively utilized in medical examination and treatment processes. In a medical image information system (101), an image processing unit (103) processes an image, a graph model creation unit (104) creates a graph data model from the information obtained from the image, a graph data model processing unit (106) acquires a graph data model based on anatomical/functional medical knowledge, compares with each other and integrates the graph data models and stores an integrated graph data model, and a display processing unit (110) displays the integrated graph data model, whereby the effective use of information obtained from the image is made possible.
    Type: Application
    Filed: March 30, 2015
    Publication date: February 16, 2017
    Applicant: Hitachi, Ltd.
    Inventors: Kazuki MATSUZAKI, Yuuichi MORIMOTO, Wataru TAKEUCHI, Kikuo UMEGAKI, Tohru SHIGA, Koichi YASUDA
  • Publication number: 20160263399
    Abstract: Visualizing a deformation amount or displacement amount of a region of interest in therapy rendered in an image upon aligning images used in radiation therapy allows for enhancing an accuracy of alignment. In a positioning system 104, an image processing unit 201 calculates a deformation parameter using a non-rigid registration method for a region of interest having been set by a treatment planning device 101 based on a treatment plan CT image and three-dimensional tomographic image imaged for bed positioning and calculates a displacement amount parameter for a region extracted using a region extraction method. The image processing unit 201 calculates a positioning parameter representing a displacement amount of a bed based on the calculated deformation parameter and displacement amount parameter and displays the respective parameters together with an alignment image, thereby allowing for confirmation of the deformation amount and displacement amount.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 15, 2016
    Inventors: Kazuki MATSUZAKI, Toru UMEKAWA
  • Patent number: 9292762
    Abstract: Provided is a region extraction system that uses an image data analysis process, which has overcome the problem of false positives in region extraction and assists in more accurate region extraction. A luminance distribution-analyzing unit (105) is used to determine a parameter of unknown quantity for extracting a region of interest. The luminance distribution-analyzing unit (105) searches a luminance distribution management database (106) for a region, which has a luminance distribution similar to the region of interest and is easily extracted, as a similar area. The region of the similar area is extracted using a region extraction pre-processing unit (107) and the value of the parameter of unknown quantity is determined on the basis of an image feature value calculated from the region extraction results.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 22, 2016
    Assignee: HITACHI, LTD.
    Inventors: Shuntaro Yui, Kazuki Matsuzaki, Junichi Miyakoshi
  • Publication number: 20150049935
    Abstract: Provided is a region extraction system that uses an image data analysis process, which has overcome the problem of false positives in region extraction and assists in more accurate region extraction. A luminance distribution-analyzing unit (105) is used to determine a parameter of unknown quantity for extracting a region of interest. The luminance distribution-analyzing unit (105) searches a luminance distribution management database (106) for a region, which has a luminance distribution similar to the region of interest and is easily extracted, as a similar area. The region of the similar area is extracted using a region extraction pre-processing unit (107) and the value of the parameter of unknown quantity is determined on the basis of an image feature value calculated from the region extraction results.
    Type: Application
    Filed: December 21, 2012
    Publication date: February 19, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Shuntaro Yui, Kazuki Matsuzaki, Junichi Miyakoshi
  • Publication number: 20140153833
    Abstract: The present invention relates to a technology for extracting a target area from within an image by a combination of a plurality of image processes, enabling an automatic setting of an image process procedure without an operator inputting the image process procedure. Thus, according to the present invention, the content of an image process to be carried out in the next and subsequent rounds is automatically determined based on a history of results of image processes that have been applied to a process object image up to the immediately preceding round.
    Type: Application
    Filed: May 21, 2012
    Publication date: June 5, 2014
    Applicant: HITACHI, LTD.
    Inventors: Junichi Miyakoshi, Shuntaro Yui, Kazuki Matsuzaki
  • Publication number: 20140037160
    Abstract: An image processing apparatus includes a process flow building unit, a process flow execution unit, a display unit, a selection unit, a process flow evaluation unit, and a storage unit including a process flow database. In addition, an image processing apparatus includes an image processing parameter adjusting unit, a process flow execution unit, a display unit, a selection unit, a parameter evaluation unit, and a storage unit including a parameter database.
    Type: Application
    Filed: July 29, 2013
    Publication date: February 6, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Kazuki MATSUZAKI, Shinji TARUMI, Shuntaro YUI
  • Publication number: 20130103417
    Abstract: Provided is a medical care support system for the sharing and reusing of medical information on the basis of a workflow which is a flow of medical-related services. A workflow step that was executed prior to an ongoing workflow step is selected by using a medical information database which has registered a workflow and information of each workflow step in association with medical information; and information is inputted by medical staff in the ongoing workflow step while the medical information registered in the selected workflow step being referred to; and the medical information being referred to and the inputted information are registered in the medical information database in association with the ongoing workflow step.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 25, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Kumiko Seto, Kikuo Umegaki, Masayuki Ohta, Shuntaro Yui, Satoshi Mitsuyama, Kazuki Matsuzaki, Hajime Sasaki, Takuya Kamiyama, Hisaaki Ochi, Yoshihiko Nagamine, Yuji Oka
  • Publication number: 20120287131
    Abstract: In the process of a registration between first and second images captured by different image pickup apparatuses, even if corresponding parts have different pixel values, different shapes and different field of view, the registration can be carried out with high speed and high degree of precision. In order to perform the registration between the first and second images, either of the first and second images is divided into segmented regions, and given physical property values are set to the segmented regions. Further, an image (pseudo image) having similar pixel values, shapes and field of view to the other image is created, and the pseudo image and the second image that have the same features are positioned, thereby performing the registration between the first and second images.
    Type: Application
    Filed: December 16, 2010
    Publication date: November 15, 2012
    Applicant: HITACHI, LTD.
    Inventors: Kazuki Matsuzaki, Kumiko Seto, Yoshihiko Nagamine, Hajime Sasaki
  • Patent number: 7501633
    Abstract: A radiological imaging apparatus includes an imaging apparatus having an opening for insertion of a bed thereinto, and an attenuation correction data creating device. The imaging has a plurality of radiation detectors disposed around the opening and a plurality of gamma ray generation units residing between the opening and the radiation detectors disposed at a position nearest to the opening and being placed in a longitudinal direction of the bed. Each ?-ray generation unit has ?-ray sources of single photon emission nuclear species and is arranged to externally radiate a ?-ray alternately from either one of the ?-ray generators toward the opening. The data creator prepares attenuation correction data based on a detection signal as output from the radiation detector due to the incoming radiation of ?-rays from the ?-ray generator.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: March 10, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Kazuki Matsuzaki, Keiji Kobashi, Yuichi Morimoto
  • Publication number: 20080317197
    Abstract: A radiological imaging apparatus includes an imaging apparatus having an opening for insertion of a bed thereinto, and an attenuation correction data creating device. The imaging has a plurality of radiation detectors disposed around the opening and a plurality of gamma ray generation units residing between the opening and the radiation detectors disposed at a position nearest to the opening and being placed in a longitudinal direction of the bed. Each ?-ray generation unit has ?-ray sources of single photon emission nuclear species and is arranged to externally radiate a ?-ray alternately from either one of the ?-ray generators toward the opening. The data creator prepares attenuation correction data based on a detection signal as output from the radiation detector due to the incoming radiation of ?-rays from the ?-ray generator.
    Type: Application
    Filed: August 13, 2008
    Publication date: December 25, 2008
    Inventors: Kazuki Matsuzaki, Keiji Kobashi, Yuichi Morimoto
  • Publication number: 20070135702
    Abstract: A radiological imaging apparatus includes an imaging apparatus having an opening for insertion of a bed thereinto, and an attenuation correction data creating device. The imaging has a plurality of radiation detectors disposed around the opening and a plurality of gamma ray generation units residing between the opening and the radiation detectors disposed at a position nearest to the opening and being placed in a longitudinal direction of the bed. Each ?-ray generation unit has ?-ray sources of single photon emission nuclear species and is arranged to externally radiate a ?-ray alternately from either one of the ?-ray generators toward the opening. The data creator prepares attenuation correction data based on a detection signal as output from the radiation detector due to the incoming radiation of ?-rays from the ?-ray generator.
    Type: Application
    Filed: November 16, 2006
    Publication date: June 14, 2007
    Inventors: Kazuki Matsuzaki, Keiji Kobashi, Yuichi Morimoto
  • Patent number: 5544147
    Abstract: A disk reproducing apparatus is provided with first and second trays which can reciprocate between a reproducing area for storing therein a reproducing unit and a stand-by area adjacent to the reproducing area. The first and second trays are interchangeable by moving the second tray in an opposite direction to the first tray along a path formed at a higher position than that for the first tray. In this interchanging operation, the second tray being moved from said stand-by area to said reproducing area is lowered from a height position of the path situated above the first tray preferably to the same height position as the first tray set in said reproducing area. Since the described arrangement offers a smaller height difference between the first and second trays in the reproducing area, a stroke of the up-and-down movement of the reproducing unit can be made smaller, thereby achieving a reduction in size of the apparatus.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: August 6, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Satoru Koizumi, Susumu Chono, Yoshihiro Abe, Kazuki Matsuzaki