Patents by Inventor Kazuto Nakabayashi
Kazuto Nakabayashi 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).
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Patent number: 11965948Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.Type: GrantFiled: December 20, 2022Date of Patent: April 23, 2024Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuichi Yamashita, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Kensuke Shinoda
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Publication number: 20230384405Abstract: According to one embodiment, a magnetic resonance imaging system includes a first imaging apparatus, a first cooling system, a second imaging apparatus, a second cooling system and a cooling control device. The first imaging apparatus includes a first magnet configured to generate a static magnetic field. The first cooling system is configured to cool the first magnet. The second imaging apparatus includes a second magnet configured to generate a static magnetic field. The second cooling system is configured to cool the second magnet. The cooling control device is configured to switch a cooling target of each of the first cooling system and the second cooling system.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Applicant: Canon Medical Systems CorporationInventors: Hiroyuki TSUJINO, Kazuto NAKABAYASHI
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Patent number: 11815581Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.Type: GrantFiled: May 2, 2022Date of Patent: November 14, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Kensuke Shinoda, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Yuichi Yamashita
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Patent number: 11768261Abstract: According to one embodiment, a magnetic resonance imaging system includes a first imaging apparatus, a first cooling system, a second imaging apparatus, a second cooling system and a cooling control device. The first imaging apparatus includes a first magnet configured to generate a static magnetic field. The first cooling system is configured to cool the first magnet. The second imaging apparatus includes a second magnet configured to generate a static magnetic field. The second cooling system is configured to cool the second magnet. The cooling control device is configured to switch a cooling target of each of the first cooling system and the second cooling system.Type: GrantFiled: April 29, 2022Date of Patent: September 26, 2023Assignee: Canon Medical Systems CorporationInventors: Hiroyuki Tsujino, Kazuto Nakabayashi
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Patent number: 11747417Abstract: According to one embodiment, a magnetic resonance imaging system includes a first power supply, one or more second power supplies and control circuitry. The first power supply supplies power to a magnetic resonance imaging apparatus at a time of power outage of a commercial power supply electrically connected to the magnetic resonance imaging apparatus. The second power supplies supply the power to the magnetic resonance imaging apparatus. The control circuitry determines a state of feeding from the first power supply and the second power supplies to the magnetic resonance imaging apparatus, and performs control of power consumption in the magnetic resonance imaging apparatus based on a determination result of the state of feeding.Type: GrantFiled: October 21, 2021Date of Patent: September 5, 2023Assignee: Canon Medical Systems CorporationInventors: Yohei Hashizume, Tomoyuki Yoshida, Kazuto Nakabayashi
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Publication number: 20230251336Abstract: According to one embodiment, a MRI apparatus determines a first time during which a subsidiary power supply is capable of supplying power to a cooling device based on a capacity of the subsidiary power supply when power outage of a main power supply occurs, and determines a second time needed to demagnetize a superconducting magnet based on an excitation current of the superconducting magnet and a temperature of the superconducting magnet. The MRI apparatus determines starts ramp-down of the superconducting magnet after a third time based on the first time and the second time has elapsed from initiation of power outage of the main power supply.Type: ApplicationFiled: April 21, 2023Publication date: August 10, 2023Applicant: Canon Medical Systems CorporationInventors: Kazuto NAKABAYASHI, Takehiro SHIBUYA
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Patent number: 11662406Abstract: According to one embodiment, a MRI apparatus determines a first time during which a subsidiary power supply is capable of supplying power to a cooling device based on a capacity of the subsidiary power supply when power outage of a main power supply occurs, and determines a second time needed to demagnetize a superconducting magnet based on an excitation current of the superconducting magnet and a temperature of the superconducting magnet. The MRI apparatus determines starts ramp-down of the superconducting magnet after a third time based on the first time and the second time has elapsed from initiation of power outage of the main power supply.Type: GrantFiled: November 5, 2021Date of Patent: May 30, 2023Assignee: Canon Medical Systems CorporationInventors: Kazuto Nakabayashi, Takehiro Shibuya
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Publication number: 20230116931Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.Type: ApplicationFiled: December 20, 2022Publication date: April 20, 2023Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuichi YAMASHITA, Kazuto NAKABAYASHI, Hitoshi KANAZAWA, Kazuya OKAMOTO, Hiroshi TAKAI, Nobuyuki KONUMA, Kensuke SHINODA
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Patent number: 11536790Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.Type: GrantFiled: December 19, 2019Date of Patent: December 27, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuichi Yamashita, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Kensuke Shinoda
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Publication number: 20220381857Abstract: According to one embodiment, a magnetic resonance imaging system includes a first imaging apparatus, a first cooling system, a second imaging apparatus, a second cooling system and a cooling control device. The first imaging apparatus includes a first magnet configured to generate a static magnetic field. The first cooling system is configured to cool the first magnet. The second imaging apparatus includes a second magnet configured to generate a static magnetic field. The second cooling system is configured to cool the second magnet. The cooling control device is configured to switch a cooling target of each of the first cooling system and the second cooling system.Type: ApplicationFiled: April 29, 2022Publication date: December 1, 2022Applicant: Canon Medical Systems CorporationInventors: Hiroyuki TSUJINO, Kazuto NAKABAYASHI
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Publication number: 20220260659Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.Type: ApplicationFiled: May 2, 2022Publication date: August 18, 2022Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Kensuke SHINODA, Kazuto NAKABAYASHI, Hitoshi KANAZAWA, Kazuya OKAMOTO, Hiroshi TAKAI, Nobuyuki KONUMA, Yuichi YAMASHITA
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Patent number: 11415656Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.Type: GrantFiled: January 28, 2020Date of Patent: August 16, 2022Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Kensuke Shinoda, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Yuichi Yamashita
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Publication number: 20220146611Abstract: According to one embodiment, a MRI apparatus determines a first time during which a subsidiary power supply is capable of supplying power to a cooling device based on a capacity of the subsidiary power supply when power outage of a main power supply occurs, and determines a second time needed to demagnetize a superconducting magnet based on an excitation current of the superconducting magnet and a temperature of the superconducting magnet. The MRI apparatus determines starts ramp-down of the superconducting magnet after a third time based on the first time and the second time has elapsed from initiation of power outage of the main power supply.Type: ApplicationFiled: November 5, 2021Publication date: May 12, 2022Applicant: Canon Medical Systems CorporationInventors: Kazuto NAKABAYASHI, Takehiro SHIBUYA
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Publication number: 20220146609Abstract: According to one embodiment, a magnetic resonance imaging system includes a first power supply, one or more second power supplies and control circuitry. The first power supply supplies power to a magnetic resonance imaging apparatus at a time of power outage of a commercial power supply electrically connected to the magnetic resonance imaging apparatus. The second power supplies supply the power to the magnetic resonance imaging apparatus. The control circuitry determines a state of feeding from the first power supply and the second power supplies to the magnetic resonance imaging apparatus, and performs control of power consumption in the magnetic resonance imaging apparatus based on a determination result of the state of feeding.Type: ApplicationFiled: October 21, 2021Publication date: May 12, 2022Applicant: Canon Medical Systems CorporationInventors: Yohei HASHIZUME, Tomoyuki YOSHIDA, Kazuto NAKABAYASHI
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Patent number: 10799142Abstract: A PET-MRI apparatus according to an embodiment includes a static magnetic field magnet, a gradient coil, a birdcage-type radio frequency coil, and at least one PET detector. The static magnetic field magnet is configured to generate a static magnetic field. The gradient coil is configured to apply a gradient magnetic field to a subject placed in the static magnetic field. The radio frequency coil includes two end rings and a plurality of rungs arranged at intervals along a circumferential direction of the end rings and is configured to transmit a radio frequency pulse or to receive a magnetic resonance signal from the subject. Further, the PET detector is housed inside a conductor structuring the rungs of the radio frequency coil.Type: GrantFiled: July 17, 2017Date of Patent: October 13, 2020Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Kazuya Okamoto, Kazuto Nakabayashi
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Publication number: 20200241098Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.Type: ApplicationFiled: January 28, 2020Publication date: July 30, 2020Applicant: Canon Medical Systems CorporationInventors: Kensuke SHINODA, Kazuto NAKABAYASHI, Hitoshi KANAZAWA, Kazuya OKAMOTO, Hiroshi TAKAI, Nobuyuki KONUMA, Yuichi YAMASHITA
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Publication number: 20200200848Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.Type: ApplicationFiled: December 19, 2019Publication date: June 25, 2020Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuichi YAMASHITA, Kazuto NAKABAYASHI, Hitoshi KANAZAWA, Kazuya OKAMOTO, Hiroshi TAKAI, Nobuyuki KONUMA, Kensuke SHINODA
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Publication number: 20180028092Abstract: A PET-MRI apparatus according to an embodiment includes a static magnetic field magnet, a gradient coil, a birdcage-type radio frequency coil, and at least one PET detector. The static magnetic field magnet is configured to generate a static magnetic field. The gradient coil is configured to apply a gradient magnetic field to a subject placed in the static magnetic field. The radio frequency coil includes two end rings and a plurality of rungs arranged at intervals along a circumferential direction of the end rings and is configured to transmit a radio frequency pulse or to receive a magnetic resonance signal from the subject. Further, the PET detector is housed inside a conductor structuring the rungs of the radio frequency coil.Type: ApplicationFiled: July 17, 2017Publication date: February 1, 2018Applicant: Toshiba Medical Systems CorporationInventors: Kazuya OKAMOTO, Kazuto NAKABAYASHI
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Patent number: 7741847Abstract: A magnetic resonance apparatus in which magnetic metal pieces are accommodated in an accommodation section so as to correct uniformity in a main magnetic field, includes an acquisition unit which acquires temperature information related to at least one of a temperature of the magnetic metal pieces accommodated in the accommodation section, a temperature of the accommodation section, and a temperature of a position in the vicinity of the accommodation section, and a temperature adjustment unit which adjusts the temperature of the magnetic metal pieces to a target temperature by preheating the magnetic metal pieces on the basis of the temperature information acquired by the acquisition unit.Type: GrantFiled: October 10, 2007Date of Patent: June 22, 2010Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Kazuto Nakabayashi, Masatoshi Hanawa
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Patent number: 7619415Abstract: A magnetic resonance imaging apparatus has at least one RF coil and a data processing control unit. The RF coil generates unique information receives a nuclear magnetic resonance signal, and wirelessly transmits the received nuclear magnetic resonance signal and the unique information. The data processing control unit receives the wirelessly transmitted nuclear magnetic resonance signal and the unique information, and generates image data based on the nuclear magnetic resonance signal in accordance with the unique information.Type: GrantFiled: April 4, 2008Date of Patent: November 17, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Kazuto Nakabayashi