Patents by Inventor Takuya Sakaguchi

Takuya Sakaguchi 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).

  • Publication number: 20210201482
    Abstract: In one embodiment, a medical information processing apparatus includes processing circuitry configured to: perform processing using a trained model that is generated by machine learning with a plurality of training data; acquire first attribute data indicating an attribute of an object-to-be-trained related to the plurality of training data that are used for generating the trained model; acquire second attribute data indicating an attribute of an object-to-be-diagnosed; and perform the processing on input-data of the object-to-be-diagnosed based on goodness of fit that is an index indicating degree of matching between the first attribute data and the second attribute data.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 1, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Chihiro HATTORI, Takuya SAKAGUCHI
  • Publication number: 20210161485
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube, an X-ray detector, image generating circuitry, and processing circuitry. The X-ray tube generates an X-ray. The X-ray detector is positioned in a manner facing the X-ray tube, and detects the X-ray. The image generating circuitry generates an X-ray image one after another, based on an output of the X-ray detector. The processing circuitry identifies an inserted object inside a subject in the X-ray image, by performing an image recognition process to the X-ray image. The processing circuitry sets the area to be searched for a marker, based on the inserted object identified in the X-ray image. The processing circuitry detects the marker in the X-ray image, by searching the area to be searched for the marker.
    Type: Application
    Filed: November 9, 2020
    Publication date: June 3, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Fumimasa SHIGE, Takuya SAKAGUCHI
  • Patent number: 11006917
    Abstract: A medical-information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires medical image data that is obtained during imaging on the subject in a resting state in the time phase where the relationship between the volume of blood flow and the pressure in a blood vessel in the cardiac cycle of the subject indicates a proportional relationship.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: May 18, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Kenji Hirohata
  • Publication number: 20210142538
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a first index value obtained based on fluid analysis that is performed based on an image including a blood vessel of a subject, the first index value being related to blood flow at each of positions in the blood vessel. The processing circuitry acquires external information including a second index value related to blood flow at each of the positions in the blood vessel. The processing circuitry changes one of an arrangement direction of index values in a first graph and an arrangement direction of index values in a second graph in accordance with the other one of the arrangement directions. The processing circuitry displays the first graph and the second graph on a display unit such that the arrangement directions of the index values match each other.
    Type: Application
    Filed: December 18, 2020
    Publication date: May 13, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Takuya SAKAGUCHI
  • Publication number: 20210133969
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain an image capturing a space in which a manipulation is being performed on an examined subject and non-image information related to at least one of the manipulation, the examined subject, or the space. Also, the processing circuitry is configured to detect a situation having a high possibility for an occurrence of an abnormality in the space, on the basis of the obtained image, the obtained non-image information, and first correspondence information. The first correspondence information indicates a correspondence relationship between two or more images capturing the space, non-image information, and abnormalities having a high possibility of occurring in the space.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Sho SASAKI, Ryoichi NAGAE, Shingo ABE, Hisato TAKEMOTO, Takuya SAKAGUCHI, Fumimasa SHIGE, Tomoki FUJITO
  • Publication number: 20210085271
    Abstract: A medical-image processing apparatus and a medical-image diagnostic apparatus according to an embodiment include an acquisition unit, a generation unit, an identification unit, and a display control unit. The acquisition unit acquires a medical image containing a blood vessel collected by the medical-image diagnostic apparatus. The generation unit generates an anatomical structure model based on the medical image acquired by the acquisition unit. The identification unit identifies a position, on the medical image, of an index relating to blood flow analyzed through fluid analysis using the anatomical structure model. The display control unit displays the position of the index on the medical image, and also displays the index associated with the position of the index on the medical image.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Satoshi WAKAI, Takuya SAKAGUCHI, Akihito TAKAHASHI
  • Publication number: 20210040643
    Abstract: A susceptor is a component for placing a SiC substrate in forming an epitaxial layer on a main surface of the SiC substrate. In this susceptor, a support surface and a recess are formed. The support surface is formed on lower position than an upper surface of the susceptor and supports an outer circumferential of the rear face of the SiC substrate. The recess is formed in the inside of the diametrical direction than the support surface, and at least the surface is made of a tantalum carbide, the depth of that is not in contact with the rear face of the Sic substrate in forming the epitaxial layer.
    Type: Application
    Filed: May 11, 2018
    Publication date: February 11, 2021
    Applicant: TOYO TANSO CO., LTD.
    Inventors: Takuya SAKAGUCHI, Masato SHINOHARA, Satoru NOGAMI
  • Publication number: 20210030377
    Abstract: A marker-coordinate detecting unit detects coordinates of a stent marker on a new image when the new image is stored in an image-data storage unit; and then a correction-image creating unit creates a correction image from the new image through, for example, image transformation processing, so as to match up the detected coordinates with reference coordinates that are coordinates of the stent marker already detected by the marker-coordinate detecting unit in a first frame. An image post-processing unit then creates an image for display by performing post-processing on the correction image created by the correction-image creating unit, the post-processing including high-frequency noise reduction filtering-processing, low-frequency component removal filtering-processing, and logarithmic-image creating processing; and then a system control unit performs control of displaying a moving image of an enlarged image of a set region that is set in the image for display, together with an original image.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 4, 2021
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya SAKAGUCHI, Kyojiro NAMBU, Hisato TAKEMOTO
  • Patent number: 10896530
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a first index value obtained based on fluid analysis that is performed based on an image including a blood vessel of a subject, the first index value being related to blood flow at each of positions in the blood vessel. The processing circuitry acquires external information including a second index value related to blood flow at each of the positions in the blood vessel. The processing circuitry changes one of an arrangement direction of index values in a first graph and an arrangement direction of index values in a second graph in accordance with the other one of the arrangement directions. The processing circuitry displays the first graph and the second graph on a display unit such that the arrangement directions of the index values match each other.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 19, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Takuya Sakaguchi
  • Patent number: 10888290
    Abstract: A medical-image processing apparatus and a medical-image diagnostic apparatus according to an embodiment include an acquisition unit, a generation unit, an identification unit, and a display control unit. The acquisition unit acquires a medical image containing a blood vessel collected by the medical-image diagnostic apparatus. The generation unit generates an anatomical structure model based on the medical image acquired by the acquisition unit. The identification unit identifies a position, on the medical image, of an index relating to blood flow analyzed through fluid analysis using the anatomical structure model. The display control unit displays the position of the index on the medical image, and also displays the index associated with the position of the index on the medical image.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: January 12, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Satoshi Wakai, Takuya Sakaguchi, Akihito Takahashi
  • Publication number: 20200375565
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of a patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya SAKAGUCHI, Takahiko Nishioka, Kazumasa Arakita
  • Patent number: 10842446
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry collects pieces of past image data in a plurality of time phases that contain at least a part of a coronary artery of a heart and new image data in one time phase that contains at least a part of the coronary artery and has been acquired after acquisition of the pieces of past image data. The processing circuitry performs registration processing between the pieces of collected past image data and registration processing between any one of the pieces of past image data and the new image data. The processing circuitry generates pieces of synthesized image data corresponding to the time phases of the pieces of past image data other than the past image data on which the registration processing with the new image data has been executed by reflecting a shape of the new image data based on results of the registration processing.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 24, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hideaki Ishii, Takuya Sakaguchi, Kazumasa Arakita
  • Patent number: 10827991
    Abstract: A marker-coordinate detecting unit detects coordinates of a stent marker on a new image when the new image is stored in an image-data storage unit; and then a correction-image creating unit creates a correction image from the new image through, for example, image transformation processing, so as to match up the detected coordinates with reference coordinates that are coordinates of the stent marker already detected by the marker-coordinate detecting unit in a first frame. An image post-processing unit then creates an image for display by performing post-processing on the correction image created by the correction-image creating unit, the post-processing including high-frequency noise reduction filtering-processing, low-frequency component removal filtering-processing, and logarithmic-image creating processing; and then a system control unit performs control of displaying a moving image of an enlarged image of a set region that is set in the image for display, together with an original image.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: November 10, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Kyojiro Nambu, Hisato Takemoto
  • Publication number: 20200311941
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain feature values related to the shape and a property of the heart. The processing circuitry is configured to estimate, by using the feature values, a state of the heart after a chest is opened. The processing circuitry is configured to estimate, based on a result of the estimation of the state of the heart, a state of the heart after the chest is closed after a treatment is completed. The processing circuitry is configured to output a parameter related to the estimated state of the heart after the chest is closed to a display.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 1, 2020
    Applicants: The University of Tokyo, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Ichiro Sakuma, Minoru Ono, Eriko Maeda, Kan Nawata, Haruo Yamauchi, Hiroyuki Tsukihara, Kenji Ino, Fumimasa Shige, Katsuhiko Fujimoto, Takuya Sakaguchi
  • Patent number: 10779786
    Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: September 22, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Takahiko Nishioka, Kazumasa Arakita
  • Patent number: 10762634
    Abstract: According to one embodiment, an image processing device includes processing circuitry. The processing circuitry sequentially acquires image data of time-sequential DSA images of an object, and acquires a parameter value for each pixel based on temporal change of a pixel value of the each pixel corresponding to the same region of the object in the sequentially acquired image data of time-sequential DSA images. Further, the processing circuitry sequentially generates image data of parameter images in such a manner that identification information according to the parameter value is assigned to the each pixel corresponding to the same region of the object, each time image data of a DSA image of the latest time phase being acquired.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: September 1, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Ryoichi Nagae, Yasuto Hayatsu, Yoshiaki Iijima, Naoki Uchida, Yoshinori Shimizu, Yuichiro Watanabe, Takuya Sakaguchi
  • Patent number: 10736593
    Abstract: An X-ray diagnostic apparatus according to the embodiment includes an X-ray tube, an X-ray detector, image generating unit generating time-series medical images of vasoganglion in a predetermined organ of a subject, region setting unit setting a first upstream and downstream region of a stenosis location in a first blood vessel in the vasoganglion on the medical images, curve generating unit generating a stenosis upstream and downstream curve indicating a change in pixel value in the time-series based on pixel values included in the first upstream and downstream region respectively, stenosis index generating unit generating a stenosis index indicating the degree of stenosis in the first blood vessel based on the stenosis upstream and downstream curve, and display unit displaying the stenosis index.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: August 11, 2020
    Assignees: Canon Medical Systems Corporation, The Johns Hopkins University
    Inventors: Jingwu Yao, Takuya Sakaguchi, Jeff Trost, Richard T. George, Joao A. C. Lima, Omair Yousuf
  • Patent number: 10736583
    Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry sets a first region of interest in a region corresponding to cardiac muscle on a cross-section of a heart included in image data. The processing circuitry further sets a second region of interest that is larger than the first region of interest in a region including the region. The processing circuitry determines a threshold for determining a range of signal values used for blood flow dynamic analysis on the image data based on a frequency distribution of signal values in the first region of interest. The processing circuitry carries out blood flow dynamic analysis on the second region of interest using signal values included in a range based on the threshold.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: August 11, 2020
    Assignees: Canon Medical Systems Corporation, FUJITA ACADEMY
    Inventors: Takashi Ichihara, Yoshihiro Ikeda, Takuya Sakaguchi
  • Publication number: 20200214659
    Abstract: A medical-information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires medical image data that is obtained during imaging on the subject in a resting state in the time phase where the relationship between the volume of blood flow and the pressure in a blood vessel in the cardiac cycle of the subject indicates a proportional relationship.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 9, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Kenji Hirohata
  • Patent number: RE48583
    Abstract: When a plurality of X-ray images in a time sequence is stored in an image data storing unit (25), a marker coordinate detecting unit (26a) detects coordinates of a stent marker in each X-ray image, and a motion vector calculating unit (26b) calculates, with coordinates of the stent marker detected in a first frame as reference coordinates, a motion vector of the coordinates of the stent marker detected in each X-ray image of a second and subsequent frames with respect to the reference coordinates. Then, a filter application range determining unit (26c) moves and determines an application range of a smoothing filter in each X-ray image based on the motion vector, and the filtered image generating unit (26d) generates a filtered image by performing a process by the smoothing filter between application ranges determined in a process target image and a reference image.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: June 8, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Kunio Shiraishi, Masayuki Nishiki, Kyojiro Nambu