Patents Assigned to Canon Medical Systems Corporation
  • Publication number: 20240077555
    Abstract: In one embodiment, a superconducting magnet includes: at least one primary superconducting coil configured to generate a primary static magnetic field by a persistent current flowing during a persistent current mode; at least one secondary superconducting coil configured to generate a secondary static magnetic field different from the primary static magnetic field in response to external control; and a static-magnetic-field control switch configured to (i) supply the secondary superconducting coil with part of the persistent current to generate the secondary static magnetic field by being closed in response to the external control during the persistent current mode and (ii) stop energization of the secondary superconducting coil and generation of the secondary static magnetic field by being opened in response to the external control during the persistent current mode.
    Type: Application
    Filed: August 17, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takehiro SHIBUYA, Hiromi KAWAMOTO
  • Publication number: 20240074737
    Abstract: In one embodiment, a medical image processing apparatus includes processing circuitry configured to: receive an ultrasonic image generated from a signal that is acquired by a detector of an ultrasonic catheter inserted into an object's body; receive an X-ray image depicting the detector and an imaging target that is at least one of a medical device inserted into the object's body and a region of interest inside the object's body; detect a position of the detector depicted in the X-ray image and a position of the imaging target depicted in at least one of the ultrasonic image and the X-ray image; and uses respective positions of the detector and the imaging target to calculate moving support information for moving the ultrasonic catheter in a manner such that the imaging target is included within a field of view “FOV” of the detector or moved towards the center of the FOV.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Saki YOSHIDA, Takuya SAKAGUCHI
  • Publication number: 20240077627
    Abstract: A radiation detector includes a sensor, an A/D converter, and processing circuitry. The sensor outputs a pulse signal based on incidence of radiation. The A/D converter generates digital data by performing A/D conversion on the pulse signal. The processing circuitry acquires temperature information of the A/D converter and outputs digital data that is compensated based on the temperature information.
    Type: Application
    Filed: July 25, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Motohiro INOUE
  • Publication number: 20240077553
    Abstract: According to an embodiment, a cooling device for cooling a constituent element housed in a housing of a unit subjected to an influence of a generated magnetic field includes a water cooling mechanism and at least one air cooling mechanism. The water cooling mechanism cools the constituent element by cooling a cooling plate with a flow of water flowing through a pipe passing through the cooling plate arranged in the housing. The air cooling mechanism is arranged on an outgoing side where the flow of water flowing through the pipe is outgoing from the housing and cools the constituent element by discharging air in the housing along with the water flow in accordance with the water flow.
    Type: Application
    Filed: August 14, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yasunobu SHINDEN, Teruo HASHIMOTO, Toshikazu SHIMMEI, Shintaro INOUE, Kenichi MURATA, Hajime TANAKA
  • Publication number: 20240074723
    Abstract: An information processing apparatus according to the present embodiment sets an image generation condition for photon counting computed tomography (PCCT) imaging, the information processing apparatus comprising processing circuitry. The processing circuitry configured to receive an input which specifies a radiogram interpretation target, based on target-by-target setting information in which, for each radiogram interpretation target, energy range setting is defined which is related to an energy range meant for discriminating photons originating from X-rays that have passed through a subject, obtain energy range setting corresponding to the radiogram interpretation target that is received, and set the energy range setting that is obtained.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takeo NABATAME, Hiroaki MIYAZAKI
  • Publication number: 20240077558
    Abstract: A static magnetic field magnet according to any of embodiments includes: a superconducting coil generating a static magnetic field; and a radiation shield surrounding the superconducting coil. In the static magnetic field magnet, at least a surface on a gradient coil side of the radiation shield includes a peripheral portion that forms multiple concavity and/or convexity. Further, In the static magnetic field magnet, a shape of a cross-section perpendicular to a depth direction of each of the multiple concavity and/or convexity formed by the peripheral portion is polygonal or circular. It is preferable that the peripheral portion is configured to form the multiple concavity and/or convexity in a straight line.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takehiro SHIBUYA, Hiromi KAWAMOTO, Sadanori TOMIHA
  • Publication number: 20240077566
    Abstract: An MRI apparatus 1 includes sequence control circuitry 29 and processing circuitry 51. The sequence control circuitry 29 performs stack-of-stars data acquisition on an imaging region of a subject to acquire time-series k-space data. The processing circuitry 51 divides time-series k-space data into groups relating to a time direction, and calculates for each of the groups a motion feature amount of the imaging region based on k-space data of a k-space central portion. The processing circuitry 51 corrects for each of the groups the k-space data based on the motion feature amount and generates the corrected k-space data. The processing circuitry 51 reconstructs an MR image relating to the imaging region based on the corrected k-space data relating to the groups.
    Type: Application
    Filed: September 6, 2023
    Publication date: March 7, 2024
    Applicant: Canon Medical Systems Corporation
    Inventor: Hideaki KUTSUNA
  • Publication number: 20240078636
    Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains, on the basis of a magnetic resonance image, a plurality of shift images resulting from shifting the position of the pixel sampling grid of the magnetic resonance image by a plurality of mutually-different shift amounts. The processing circuitry generates a plurality of ringing-corrected images, by determining, with respect to each of the pixels included in each of the plurality of shift images, a shift amount from the position of the pixel to a position where ringing artifacts will be reduced and further performing a ringing correction to correct the ringing artifacts occurring in the shift images on the basis of the determined shift amounts. The processing circuitry combines, while interleaving, pixels included in each of the plurality of ringing-corrected images.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Matthew NIELSEN, Mitsuhiro BEKKU
  • Publication number: 20240077559
    Abstract: A static magnetic field magnet according to any of embodiments includes: a vacuum vessel; a radiation shield provided inside the vacuum vessel; a superconducting coil provided inside the radiation shield, the superconducting coil generating a static magnetic field; and a winding frame supporting the superconducting coil and including a heat-generation suppression shield having a surface layer on a gradient coil side and an inner layer on the superconducting coil side. In the static magnetic field magnet, the surface layer and the inner layer are structurally or functionally separated from each other, the surface layer is configured as a layer where an eddy current generated in the winding frame flows, and the inner layer is configured as a layer where an eddy current does not almost flow.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takehiro SHIBUYA, Hiromi KAWAMOTO, Sadanori TOMIHA
  • Publication number: 20240080963
    Abstract: In one embodiment, an X-ray diagnostic apparatus includes: an X-ray generator; a current measurement circuit; a display; and processing circuitry. The X-ray generator includes: a filament connected to a cathode of an X-ray tube and configured to emit electrons; a target connected to an anode of the X-ray tube and configured to generate X-rays by receiving the electrons; and a grid configured to adjust an electric potential gradient around the filament. The current measurement circuit measures an electric current flowing between an electrode of the grid and a common electrode of the filament. The processing circuitry calculates an index related to a lifetime of the filament on the basis of a measurement value of the electric current, and causes the display to display the index.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 7, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Makoto TAKANAKA, Manabu FUKUWARA, Masahiko ONO
  • Patent number: 11922647
    Abstract: An image processing apparatus comprises processing circuitry configured to: obtain a respective identity and location for each of a first plurality of landmarks in a reference volume; obtain a respective weighting for each landmark of the first plurality of landmarks; obtain a respective identity and location for each of a second plurality of landmarks in a further volume; and determine a transform based on a fit between the first plurality of landmarks and the second plurality of landmarks, wherein the fit is determined in dependence on the weightings.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: March 5, 2024
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Ross Davies, Steven Reynolds
  • Patent number: 11921175
    Abstract: According to one embodiment, an arrayed structure includes a cylindrical-shaped conductor layer and a cylindrical-shaped layer stack. The cylindrical-shaped layer stack is arranged on an inner periphery of the conductor layer and a plurality of frequency selective surfaces are arranged in layers and stacked. Each of the frequency selective surfaces has a plurality of elements which are periodically arranged. Each element of the plurality of elements is formed in such a manner that at least a portion of an edge of a first element that faces an adjacent element in the same layer is closer to a center of the first element than another portion of edge.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: March 5, 2024
    Assignee: Canon Medical Systems Corporation
    Inventors: Takafumi Ohishi, Sadanori Tomiha
  • Patent number: 11923089
    Abstract: A diagnosis supporting system according to embodiments includes a memory that stores medical information including patient information relating to a condition of a patient, and intervention information relating to an intervention for the patient; and processing circuitry that extracts a change point in the medical information, that calculates a first change amount indicating a change in the patient information between before and after the change point, and a second change amount indicating a change in the intervention information between before and after the change point, and that performs display based on the first change amount and the second change amount in a display mode set according to at least one of the first change amount and the second change amount.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: March 5, 2024
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yudai Yamazaki, Longxun Piao, Yuka Shimomura
  • Patent number: 11918419
    Abstract: According to one embodiment, an ultrasound diagnostic apparatus can be connected with an ultrasound probe including a plurality of elements adapted to transmit ultrasound signals and to receive reflected wave signals from a subject or from the air. The ultrasound diagnostic apparatus includes processing circuitry. The processing circuitry diagnoses states of the elements based on a feature value of the reflected wave signal. The processing circuitry also prepares, based on the states, deterioration degree information indicative of the deterioration degrees of the elements. The processing circuitry superimposes the deterioration degree information onto an ultrasound image of the subject and causes a display to display a resultant image.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: March 5, 2024
    Assignee: Canon Medical Systems Corporation
    Inventors: Kazuo Tezuka, Shouichi Nakauchi, Yoshinori Goto, Naoki Yoneyama, Takayuki Gunji, Shigemitsu Nakaya, Norihisa Kikuchi
  • Patent number: 11921058
    Abstract: A computer-tomography (CT) imaging system, comprising an imaging data acquisition system. The imaging data acquisition system includes a plurality of sets of a detector section, a storage section, and an aggregation section. The detector section includes a plurality of detector elements each being configured to convert radiation into electric signals. The aggregation section is configured to aggregate imaging data carried by the electronic signals from the detector section. The storage section is connected with an output of the detector section and an input of the aggregation section. The storage section comprises a predetermined number of non-volatile memories to store the imaging data from the corresponding detector elements.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: March 5, 2024
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: James Lawrence Begelman, Kevin Zimmerman, Thomas Labno, John Baumgart
  • Patent number: 11918396
    Abstract: According to one embodiment, a medical imaging apparatus includes a gantry, a carriage, a screen, a reflector, and a frame. The gantry has a bore formed therein. The bore is formed to accept a subject to be imaged by the medical imaging apparatus. The carriage moves through the bore. The screen is provided on the carriage. An image is projected on the screen by a projector from a rear. The rear is opposite to a side of which a top plate is inserted into the bore. The reflector reflects the image projected on the screen. The reflector includes prisms arranged in a same line. The frame supports the reflector. The frame is provided on the carriage.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: March 5, 2024
    Assignee: Canon Medical Systems Corporation
    Inventors: Aira Hotta, Takashi Sasaki, Yuko Kizu, Shinichi Uehara
  • Publication number: 20240070937
    Abstract: According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry is configured to acquire three-dimensional thermographic image data by imaging a subject irradiated with infrared rays. The processing circuitry is configured to acquire a plurality of items of projection data by imaging the subject with tomosynthesis. The processing circuitry is configured to execute reconstruction based on the plurality of items of projection data and the three-dimensional thermographic image data.
    Type: Application
    Filed: August 23, 2023
    Publication date: February 29, 2024
    Applicant: Canon Medical Systems Corporation
    Inventors: Yoshimasa KOBAYASHI, Daisuke SATO, Tomio MAEHAMA, Risa HAYASHI, Tamotsu INO, Katsunori KOJIMA, Yoshinori SAITO, Naoto WATANABE
  • Publication number: 20240065655
    Abstract: A photon counting CT apparatus of an embodiment includes processing circuitry. The processing circuitry is configured to generate data from which a plurality of types of contrast-enhancing substances can be discriminated on the basis of detection results obtained by monitoring scanning performed on a subject into which the plurality of types of contrast-enhancing substances have been injected.
    Type: Application
    Filed: August 11, 2023
    Publication date: February 29, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Masaharu TSUYUKI
  • Publication number: 20240065654
    Abstract: A photon counting X-ray image diagnosis apparatus according to an embodiment includes an X-ray tube, a photon counting X-ray detector, and processing circuitry. Based on detection data sets obtained by performing a phantom imaging process using of mutually-different acquisition parameter sets by which X-rays radiated onto a phantom are detected by the X-ray detector, the processing circuitry identifies a boundary condition defining a range of acquisition parameter sets corresponding to a pileup occurrence. The processing circuitry sets a margin range based on the boundary condition. The processing circuitry generates acquisition parameter sets included in a range obtained by adding the margin range to the range of the acquisition parameter sets. The processing circuitry generates calibration data for a pileup correction based on detection data sets obtained by using the acquisition parameter sets.
    Type: Application
    Filed: July 6, 2023
    Publication date: February 29, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Yojiro SUZUKI
  • Publication number: 20240071590
    Abstract: The medicine intake support device includes a processing circuitry and a memory. The processing circuitry acquires a previous medicine intake time and a next scheduled medicine intake time, wherein the previous medicine intake time is a time when a patient previously took a prescription medicine, and the next scheduled medicine intake time is a predetermined time when the patient will take a next dose of the prescription medicine. The memory stores a type of the prescription medicine and a measure in response to the patient's failure to take the type of the prescription medicine in correspondence with each other. If the patient failed to take the prescription medicine, the processing circuitry suggests a response method in response to the patient's failure to take the prescription medicine based on the measure stored in the memory, the previous medicine intake time, the next scheduled medicine intake time, and a current time.
    Type: Application
    Filed: August 30, 2023
    Publication date: February 29, 2024
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Mariko SHIBATA, Kohei WATANABE