Patents by Inventor Toyomasa Honda
Toyomasa Honda 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: 10806418Abstract: According to one embodiment, an X-ray CT apparatus includes processing circuitry. The processing circuitry acquires a plurality of discrete images at a corresponding plurality of discrete positions in a body axis direction of an object, and calculates imaging conditions corresponding to a scan range of a main scan based on the plurality of discrete images.Type: GrantFiled: May 31, 2018Date of Patent: October 20, 2020Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hiroshi Hirayama, Sanae Harada, Toyomasa Honda
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Patent number: 10811213Abstract: An X-ray CT apparatus according to an embodiment includes: a rotatable gantry base; a housing that is fixed to the gantry base and that has an opening; an insert that is removably located in the housing and that includes a cathode that generates a thermal electron and an anode that receives collision of the thermal electron to generate an X-ray; and a blower that is removably attached to the side of the opening to flow air into the housing.Type: GrantFiled: September 13, 2018Date of Patent: October 20, 2020Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventor: Toyomasa Honda
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Publication number: 20190088439Abstract: An X-ray CT apparatus according to an embodiment includes: a rotatable gantry base; a housing that is fixed to the gantry base and that has an opening; an insert that is removably located in the housing and that includes a cathode that generates a thermal electron and an anode that receives collision of the thermal electron to generate an X-ray; and a blower that is removably attached to the side of the opening to flow air into the housing.Type: ApplicationFiled: September 13, 2018Publication date: March 21, 2019Applicant: Canon Medical Systems CorporationInventor: Toyomasa HONDA
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Publication number: 20180344275Abstract: According to one embodiment, an X-ray CT apparatus includes processing circuitry. The processing circuitry acquires a plurality of discrete images at a corresponding plurality of discrete positions in a body axis direction of an object, and calculates imaging conditions corresponding to a scan range of a main scan based on the plurality of discrete images.Type: ApplicationFiled: May 31, 2018Publication date: December 6, 2018Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hiroshi HIRAYAMA, Sanae HARADA, Toyomasa HONDA
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Patent number: 9877694Abstract: According to on embodiment, an inverter high voltage generator includes a DC power supply, an inverter, a high voltage converter, a discharge detector, a controller. The DC power supply generates a direct current. The inverter converts the direct current from the DC power supply to an alternating current by switching. The high voltage converter converts an AC output pulse from the inverter to a high voltage. The discharge detector detects an electric discharge that has occurred in an X-ray tube. The controller controls, upon detection of the discharge, switching of the inverter to change a pulse width or a frequency of the AC output pulse from the inverter so as to gradually increase a measured tube voltage value of the X-ray tube up to a target tube voltage value.Type: GrantFiled: June 22, 2015Date of Patent: January 30, 2018Assignee: Toshiba Medical Systems CorporationInventor: Toyomasa Honda
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Publication number: 20150289352Abstract: According to on embodiment, an inverter high voltage generator includes a DC power supply, an inverter, a high voltage converter, a discharge detector, a controller. The DC power supply generates a direct current. The inverter converts the direct current from the DC power supply to an alternating current by switching. The high voltage converter converts an AC output pulse from the inverter to a high voltage. The discharge detector detects an electric discharge that has occurred in an X-ray tube. The controller controls, upon detection of the discharge, switching of the inverter to change a pulse width or a frequency of the AC output pulse from the inverter so as to gradually increase a measured tube voltage value of the X-ray tube up to a target tube voltage value.Type: ApplicationFiled: June 22, 2015Publication date: October 8, 2015Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventor: Toyomasa HONDA
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Patent number: 8300768Abstract: An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.Type: GrantFiled: August 25, 2010Date of Patent: October 30, 2012Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Susumu Hashimoto, Toyomasa Honda, Sanae Harada, Hiroaki Miyazaki
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Patent number: 8184768Abstract: This embodiment is provided with a detector configured to detect an X-ray radiated from an X-ray tube, a reconstructing part configured to reconstruct an image from projection data based on the detection by the detector, an acquiring part configured to acquire a parameter indicating the status of a scan, a determining part configured to determine whether the parameter acquired by the acquiring part during the scan is included within a reference range, and a controller configured to change the size of a focal point of an electron beam to a different size depending on the determination result during the scan with reference to the result of the determination by the determining part.Type: GrantFiled: July 22, 2010Date of Patent: May 22, 2012Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Toyomasa Honda, Shinsuke Tsukagoshi
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Publication number: 20110051884Abstract: An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.Type: ApplicationFiled: August 25, 2010Publication date: March 3, 2011Applicants: Kabushiki Kaisha Toshiba, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Susumu HASHIMOTO, Toyomasa Honda, Sanae Harada, Hiroaki Miyazaki
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Publication number: 20110019793Abstract: This embodiment is provided with a detector configured to detect an X-ray radiated from an X-ray tube, a reconstructing part configured to reconstruct an image from projection data based on the detection by the detector, an acquiring part configured to acquire a parameter indicating the status of a scan, a determining part configured to determine whether the parameter acquired by the acquiring part during the scan is included within a reference range, and a controller configured to change the size of a focal point of an electron beam to a different size depending on the determination result during the scan with reference to the result of the determination by the determining part.Type: ApplicationFiled: July 22, 2010Publication date: January 27, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Toyomasa HONDA, Shinsuke TSUKAGOSHI
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Patent number: 7826586Abstract: An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.Type: GrantFiled: August 28, 2008Date of Patent: November 2, 2010Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Tadahiro Nakayama, Kazunobu Nagai, Akiyuki Yokoyama, Isamu Nitta, Masato Nagata, Toyomasa Honda, Hidetoshi Kudo
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Publication number: 20090060123Abstract: An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.Type: ApplicationFiled: August 28, 2008Publication date: March 5, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Tadahiro NAKAYAMA, Kazunobu Nagai, Akiyuki Yokoyama, Isamu Nitta, Masato Nagata, Toyomasa Honda, Hidetoshi Kudo
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Patent number: 6449337Abstract: An X-ray computed tomography apparatus includes an X-ray tube configured to emit X-rays, an X-ray detector configured to detect X-rays passing through a subject in order to acquire projection data, a processor configured to reconstruct tomographic image data on the basis of the projection data, and an interlock unit configured to monitor generation of an arc in the X-ray tube. When an arc in the X-ray tube is detected, the interlock unit stops emitting X-ray emission from the X-ray tube. When a predetermined period of time elapse from the stop of X-ray emission, the interlock unit restarts X-ray emission from the X-ray tube.Type: GrantFiled: September 1, 2000Date of Patent: September 10, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Toyomasa Honda, Wataru Taguchi