Patents by Inventor Satoru Ohishi

Satoru Ohishi 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: 10507338
    Abstract: A gantry applies particle beams to a subject. An ultrasonic diagnostic apparatus scans the subject with ultrasonic waves via an ultrasonic probe, and acquires an ultrasonic image concerning a radiotherapy target region of the subject. A processing circuitry specifies a first planned point of a Bragg peak in the ultrasonic image, which anatomically coincides approximately with a second planned point of the Bragg peak decided in radiotherapy planning. The processing circuitry estimates a sighting point of the Bragg peak of a particle beam based on a body surface position of the subject and an actual range of the particle beam. The display displays the ultrasonic image to indicate the first planned point and the sighting point.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 17, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Takayuki Kuwahara, Satoru Ohishi
  • Patent number: 10499871
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to measure respective profiles on contrast media concentration in regions of interest including blood vessels set at about the same position in two subtraction images of subject's head taken from about the same direction at different radiography times. The processing circuitry is configured to determine a correction factor so that the two profiles measured are approximately matched. The processing circuitry is configured to correct at least one of the two subtraction images on the basis of the correction factor determined. The processing circuitry is configured to control so as to display information based on the two subtraction images that at least one thereof has been corrected on a display.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: December 10, 2019
    Assignee: Canon Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10499868
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an imaging apparatus, processing circuitry and permission input circuitry. The imaging apparatus includes an imaging system performing X-ray imaging of an object, and a bed on which the object is placed. The processing circuitry accepts an instruction to cause the imaging apparatus to perform a operation, and notifies a content of the operation relating to the accepted instruction to a first user. The permission input circuitry accepts information indicating permission of the operation from the first user who has confirmed the content of the operation. The processing circuitry causes the imaging apparatus to perform the operation to more severely restrict the operation compared with after acceptance of information indicating permission of the operation by the permission input circuitry, until the acceptance of information indicating permission of the operation by the permission input circuitry.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: December 10, 2019
    Assignee: Canon Medical Systems Corporation
    Inventors: Masaki Akiyama, Yoshimasa Kobayashi, Jun Sakakibara, Keisuke Nakamura, Satoru Ohishi
  • Patent number: 10453184
    Abstract: An image processing apparatus includes an identification unit, a calculator, and an image processor. The identification unit identifies a group of pixels indicating an object of interest in medical image data. The calculator specifies a cross-section corresponding to the running direction of the object of interest indicated by the group of pixels in the medical image data. The image processor performs noise reduction on the cross-section identified.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: October 22, 2019
    Assignee: Canon Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10390786
    Abstract: In one embodiment, an X-ray diagnostic apparatus generating an object image by detecting X-rays having passed through an object includes: a display configured to display the object image; memory circuitry configured to store feature information items for distinguishing the object image from other images; processing circuitry configured to perform display-order change processing which is processing of changing display order of the feature information items, and to cause the display to display the feature information items subjected to the display-order change processing as alternates; and an input circuit configured to receive input of selecting a feature information item from the displayed feature information items.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: August 27, 2019
    Assignee: Canon Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10229515
    Abstract: A radiation diagnosis apparatus according to an embodiment includes reconstructing circuitry. The reconstructing circuitry reconstructs three-dimensional medical agent distribution images in a time series from a group of acquired images acquired in the presence of a medical agent by an imaging system from directions in a range that makes it possible to reconstruct three-dimensional images of a subject, by performing an iterative reconstruction process that uses at least one selected from between spatial continuity of the medical agent and temporal continuity of the concentration of the medical agent as a constraint condition.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: March 12, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10198793
    Abstract: An image processing apparatus includes a processor that acquires medical image data and performs noise reduction in at least two of three different directions in the medical image data in a predetermined order.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 5, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Satoru Ohishi, Kunio Shiraishi, Hisato Takemoto
  • Publication number: 20190001155
    Abstract: According to one embodiment, the radiotherapy system includes a medical image collecting device, a body surface data collecting device and processing circuitry. The medical image collecting device collects medical three-dimensional image data of the patient at the time of treatment planning. The body surface data collecting device collects body surface data representing a three-dimensional body surface of the patient at the time of treatment planning. The processing circuitry may generate integrated data in which at least one of the medical three-dimensional image data and the treatment target region data included in the medical three-dimensional image data, and the body surface data are integrated into an identical three-dimensional coordinate system.
    Type: Application
    Filed: June 27, 2018
    Publication date: January 3, 2019
    Applicant: Canon Medical Systems Corporation
    Inventor: Satoru OHISHI
  • Publication number: 20180279983
    Abstract: A medical image processing apparatus comprises processing circuitry configured to select a reference image from blood vessel images based on contrast images acquired in time series and conduct a transformation process on other blood vessel images such that blood vessel shapes in the other blood vessel images match a blood vessel shape in the reference image, generate a color image where a color that corresponds to a temporal change in a pixel value is assigned to each pixel based on the blood vessel images after the transformation process, and display the color image on a display.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Applicant: Canon Medical Systems Corporation
    Inventor: Satoru OHISHI
  • Publication number: 20180279970
    Abstract: An X-ray-diagnostic apparatus generates time-series first vessel images corresponding to a first direction, and generates second vessel image corresponding to a second direction. The apparatus generates third vessel images corresponding to the second direction, by transforming more than one piece out of the first vessel images based on a blood vessel shape in one of the first vessel images and a blood vessel shape in at least one of the second vessel image, the third vessel image corresponding to respective time phases of the first vessel images. The apparatus generates first color image corresponding to the first direction by using more than one piece out of the first vessel images, and generates second color image corresponding to the second direction by using more than one piece out of the third vessel images.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Applicant: Canon Medical Systems Corporation
    Inventor: Satoru OHISHI
  • Patent number: 10080532
    Abstract: According to one embodiment, an X-ray diagnostic apparatus comprises a first imaging system, a second imaging system, a first support member, a second support member, control circuitry, and a reconstruction circuitry. The first projection data corresponds to a first imaging angle range. The second projection data corresponds to a second imaging angle range. A deficiency angle as an angle at which no imaging is performed is provided between the first imaging angle range and the second imaging angle range to make an imaging angle range in the projection data group have discontinuity.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 25, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Publication number: 20180260998
    Abstract: A medical image processing apparatus comprises processing circuitry configured to acquire a first blood vessel image based on X-rays that are irradiated from a first direction and a second blood vessel image based on X-rays that are irradiated from a second direction; determine a corresponding point on the second blood vessel image, which is a point corresponding to a subject point on the first blood vessel image, by using an epipolar line corresponding to the subject point and blood-flow information based on a change of a density of a contrast agent over time at the subject point; and reconstruct a three-dimensional blood vessel image by using information about the subject point and the corresponding point.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 13, 2018
    Applicant: Canon Medical Systems Corporation
    Inventor: Satoru OHISHI
  • Patent number: 10070838
    Abstract: An obtaining unit obtains, with respect to a plurality of groups of time-course fluoroscopic images that are obtained by acquiring a subject, in at least two directions, each of which intersect, first transition information that indicates transition of a signal intensity of a contrast media in a proximal region to which the contrast media flows earlier than a region of interest. A three dimensional reconstruction unit reconstructs three-dimensional image data in the region of interest such that a value that is obtained by projecting a voxel value approximates a value of a corresponding pixel in each of the groups of time-course fluoroscopic images, the voxel value being represented by second transition information that is obtained by deforming the first transition information with a factor that is related to the contrast media. A display displays the fluoroscopic image with a blood vessel image based on the three-dimensional image data.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: September 11, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10052074
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes a first imaging system, a second imaging system, and processing circuitry. The first imaging system holds a first X-ray tube and a first X-ray detector in a rotatable manner. The second imaging system holds a second X-ray tube and a second X-ray detector in a rotatable manner, and rotating centers, which are capable to set independently, between the first imaging system and the second imaging system. The processing circuitry makes a rotating center of the first imaging system and the rotating center of the second imaging system substantially equivalent to each other when a rotation imaging program using the first imaging system and the second imaging system is selected.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 21, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 10022096
    Abstract: According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry obtains time changes in intensity of image signals corresponding to a contrast agent or a blood flow based on at least one of time series contrast image data, time series non-contrast image data, and time series subtraction image data between the contrast image data and the non-contrast image data, generate color image data, having color pixel values based on the time changes in the image signals, according to a color scale, and display frames of the color image data sequentially on a display. The processing circuitry performs a loop playing of the frames of the color image data by sequentially shifting the color scale in a direction of a color phase change, at pixels of the color image data, until an instruction for stopping the loop playing is input from an input circuit.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 17, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Satoru Ohishi, Ryoichi Nagae, Yuichiro Watanabe
  • Patent number: 10013779
    Abstract: A computed tomography (CT) imaging apparatus that reduces metal artifacts for digital subtraction angiography by, in circuitry, obtaining mask frames and contrast frames generated during scans of an object; performing a first reconstruction of the mask frames to generate metal volume data; identifying metal voxels in the metal volume data; re-projecting the metal voxels into the mask frames to generate metal-mask frames; defining a region of interest in each of the mask frames, each region of interest including metal regions; re-projecting the contrast frames; blending the mask frames with the re-projected contrast frames; registering the contrast frames with respect to the blended mask frames performing a cross-correlation analysis of the mask frames and the contrast frames, frame-pair-by-frame-pair; subtracting the registered contrast image from the corresponding mask image, frame-pair-by-frame-pair, to generate subtracted frames; and performing a second reconstruction on the subtracted frames.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: July 3, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Michael D. Silver, Satoru Ohishi, Yu-Bing Chang
  • Publication number: 20180117360
    Abstract: A gantry applies particle beams to a subject. An ultrasonic diagnostic apparatus scans the subject with ultrasonic waves via an ultrasonic probe, and acquires an ultrasonic image concerning a radiotherapy target region of the subject. A processing circuitry specifies a first planned point of a Bragg peak in the ultrasonic image, which anatomically coincides approximately with a second planned point of the Bragg peak decided in radiotherapy planning. The processing circuitry estimates a sighting point of the Bragg peak of a particle beam based on a body surface position of the subject and an actual range of the particle beam. The display displays the ultrasonic image to indicate the first planned point and the sighting point.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 3, 2018
    Applicant: Toshiba Medical Systems Corporation
    Inventors: Takayuki Kuwahara, Satoru Ohishi
  • Patent number: 9913623
    Abstract: An exposure dose management system according to an embodiment includes an image storage device, a first recording device, a misalignment correction device, and a second recording device. The image storage device stores a human body three-dimensional image. The first recording device records an exposure dose and an exposure area of a subject in a first irradiation step on the human body three-dimensional image. The misalignment correction device corrects misalignment between a position of the subject in a second irradiation step, which follows the first irradiation step, and a position of the human body three-dimensional image. The second recording device further records an exposure dose and an exposure area in the second irradiation step on the human body three-dimensional image in which the misalignment was corrected.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: March 13, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 9907525
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes an obtaining unit and a calculating unit. The obtaining unit is configured to, with regard to a plurality of X-ray images that are acquired with time by using a contrast media, obtains first transition information that indicates a time-course transition of a signal intensity of the contrast media in a region of interest that corresponds to a blood vessel and obtains second transition information that indicates a time-course transition of the signal intensity of the contrast media in a region to which the contrast media flows earlier than the region of interest. The calculating unit is configured to analyze the first transition information by using the second transition information to calculate blood flow information on each blood flow in the region of interest.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: March 6, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Satoru Ohishi
  • Patent number: 9888892
    Abstract: An X-ray diagnostic imaging apparatus according to this embodiment includes a display for displaying an image and a processing circuitry which calculates an incident dose on a body surface of an object, superposes information based on the calculated incident dose on a three-dimensional image which is a three-dimensional image relating to the object and is capable of rotating display at a corresponding position on the body surface of the object and causes the three-dimensional image on which the information is superposed to be displayed on the display.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: February 13, 2018
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shingo Abe, Satoru Ohishi