Patents by Inventor Shuya Nambu
Shuya Nambu 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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Publication number: 20240130695Abstract: An X-ray CT apparatus according to an embodiment includes a photon-counting X-ray detector including a plurality of pixels and processing circuitry configured to acquire first data in a resolution priority mode from a first pixel set out of the pixels, acquire second data in an energy decomposition mode from a second pixel set, which is different from the first pixel set, out of the pixels at sampling intervals longer than those of the resolution priority mode, and generate third data based on the first data and the second data.Type: ApplicationFiled: October 22, 2023Publication date: April 25, 2024Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuji OKAJIMA, Shuya NAMBU, Hiroaki MIYAZAKI
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Patent number: 11033245Abstract: In one embodiment, an X-ray CT apparatus includes: an X-ray detector equipped with a plurality of detection elements each of which is configured to output an X-ray signal in accordance with X-rays passing through an object; and a scan controller configured to acquire X-ray signals in each of a first mode and a second mode in one scan by switching between the first mode and the second mode, the first mode being a mode of acquiring high-resolution data which are respective X-ray signals outputted from the plurality of detection elements, the second mode being a mode of acquiring normal-resolution data in which X-ray signals outputted from some of the plurality of detection elements are integrated.Type: GrantFiled: May 8, 2017Date of Patent: June 15, 2021Assignee: Canon Medical Systems CorporationInventors: Yoji Kudo, Masahiko Yamazaki, Takashi Kanemaru, Shuya Nambu, Machiko Iso
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Patent number: 10945683Abstract: According to one embodiment, an X-ray computed tomography apparatus includes processing circuitry. The processing circuitry sets a parameter of an examination protocol. Based on the set parameter, the processing circuitry determines the number of acquisition views and the number of reconstruction views of projection data. The processing circuitry acquires first projection data corresponding to the number of acquisition views. The processing circuitry calculates second projection data corresponding to the number of reconstruction views based on the first projection data. The processing circuitry reconstructs a CT image based on the second projection data.Type: GrantFiled: November 2, 2017Date of Patent: March 16, 2021Assignee: Canon Medical Systems CorporationInventors: Satoru Nakanishi, Shuya Nambu
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Patent number: 10401507Abstract: A collimator includes a plurality of modules each of which has a grid formation and in each of which a plurality of walls are arranged in a row in a first direction and a second direction intersecting the first direction. The plurality of modules are connected together by one or more connecting parts.Type: GrantFiled: February 28, 2017Date of Patent: September 3, 2019Assignees: Kabushiki Kaisha Toshiba, Canon Medical Systems CorporationInventors: Hiroki Tashiro, Hideshi Nakano, Tooru Tanaka, Aya Watase, Shuya Nambu
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Patent number: 10371829Abstract: An X-ray detector according to an embodiment includes a scintillator array and a photodiode array. In the scintillator array, a plurality of scintillators are arranged in a first direction and a second direction intersecting the first direction. The photodiode array includes photodiodes each of which is installed for a different one of the scintillators and each of which has an active area configured to convert visible light emitted by the scintillator into an electrical signal. The photodiodes are arranged in such a manner that the widths of the active areas are equal to one another in the first direction.Type: GrantFiled: October 24, 2016Date of Patent: August 6, 2019Assignee: Canon Medical Systems CorporationInventors: Akira Nishijima, Michito Nakayama, Atsushi Hashimoto, Takaya Umehara, Shuya Nambu, Hiroaki Miyazaki
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Patent number: 10185044Abstract: According to one embodiment, a photon-counting apparatus includes an X-ray tube, an X-ray detector, a support mechanism, setting circuitry and data acquisition circuitry. The X-ray detector is configured to repetitively detect an X-ray photon generated by the X-ray tube, and repetitively generate an electrical signal corresponding to the repetitively detected X-ray photon. The support mechanism is configured to support the X-ray tube to be rotatable about a rotation axis. Setting circuitry configured to set one of a time length of a readout period and a readout cycle per unit time for the electrical signal. Data acquisition circuitry is configured to count a count number of electrical signals from the X-ray detector in accordance with the set one of the time length and readout cycle.Type: GrantFiled: December 2, 2015Date of Patent: January 22, 2019Assignee: Toshiba Medical Systems CorporationInventors: Yasuhiro Noshi, Shuya Nambu
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Patent number: 10070840Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, X-ray detector, data acquisition circuit, and correction circuit. The X-ray tube generates X-rays. The X-ray detector detects the X-rays. The data acquisition circuit acquires data corresponding to an output from the X-ray detector. The correction circuit executes correction processing for third data acquired by the data acquisition circuit in actual scanning, based on first data acquired by the data acquisition circuit in a state of non-irradiation with X-rays before the actual scanning and second data acquired by the data acquisition circuit in the state of non-irradiation with X-rays after the actual scanning.Type: GrantFiled: May 25, 2016Date of Patent: September 11, 2018Assignee: Toshiba Medical Systems CorporationInventors: Atsushi Hashimoto, Shuya Nambu, Takaya Umehara, Akira Nishijima, Koichi Miyama
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Patent number: 10007012Abstract: According to one embodiment, the X-ray computed tomography apparatus includes an X-ray tube, a rotating frame, a plurality of detector elements, a plurality of DAS elements, switching circuitry, and switching control circuitry. The X-ray tube generates X-rays. The X-ray tube is attached to the rotating frame. The plurality of detector elements detect X-rays. The plurality of DAS elements perform signal processing on output signals from the plurality of detector elements. The switching circuitry is provided between the plurality of detector elements and the plurality of DAS elements. The switching control circuitry controls the switching circuitry to switch the connections between the plurality of detector elements and the plurality of DAS elements for every rotation of the rotating frame at a predetermined angle.Type: GrantFiled: January 13, 2016Date of Patent: June 26, 2018Assignee: Toshiba Medical Systems CorporationInventors: Michito Nakayama, Atsushi Hashimoto, Tomoe Sagoh, Takaya Umehara, Shuya Nambu, Koichi Miyama, Takashi Kanemaru, Keiji Matsuda, Machiko Iso
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Publication number: 20180132799Abstract: According to one embodiment, an X-ray computed tomography apparatus includes processing circuitry. The processing circuitry sets a parameter of an examination protocol. Based on the set parameter, the processing circuitry determines the number of acquisition views and the number of reconstruction views of projection data. The processing circuitry acquires first projection data corresponding to the number of acquisition views. The processing circuitry calculates second projection data corresponding to the number of reconstruction views based on the first projection data. The processing circuitry reconstructs a CT image based on the second projection data.Type: ApplicationFiled: November 2, 2017Publication date: May 17, 2018Applicant: Toshiba Medical Systems CorporationInventors: Satoru NAKANISHI, Shuya NAMBU
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Publication number: 20180120450Abstract: A collimator includes a plurality of modules each of which has a grid formation and in each of which a plurality of walls are arranged in a row in a first direction and a second direction intersecting the first direction. The plurality of modules are connected together by one or more connecting parts.Type: ApplicationFiled: February 28, 2017Publication date: May 3, 2018Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Hiroki TASHIRO, Hideshi NAKANO, Tooru TANAKA, Aya WATASE, Shuya NAMBU
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Patent number: 9921171Abstract: An X-ray computer-tomography (CT) apparatus includes an X-ray detector, a reading unit, and a read control unit. The X-ray detector has a first region and a second region at least a part of which is aligned with the first region along a channel direction, the first region in which a plurality of first detection devices that detect X-rays are arranged, the second region in which a plurality of second detection devices having a width smaller in a slice direction than that of the first detection device are arranged. The reading unit reads a signal of the X-rays detected. The read control unit adjusts timing of reading signals from the first detection device and the second detection device according to difference between the size of the first and the second detection device in such a manner that time difference in the reading signals in the slice direction decreases.Type: GrantFiled: February 6, 2015Date of Patent: March 20, 2018Assignee: Toshiba Medical Systems CorporationInventors: Shuya Nambu, Takayuki Yamazaki, Keiji Matsuda, Machiko Iso, Atsushi Hashimoto, Akira Nishijima, Takashi Kanemaru, Koichi Miyama, Takaya Umehara
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Publication number: 20170332990Abstract: In one embodiment, an X-ray CT apparatus includes: an X-ray detector equipped with a plurality of detection elements each of which is configured to output an X-ray signal in accordance with X-rays passing through an object; and a scan controller configured to acquire X-ray signals in each of a first mode and a second mode in one scan by switching between the first mode and the second mode, the first mode being a mode of acquiring high-resolution data which are respective X-ray signals outputted from the plurality of detection elements, the second mode being a mode of acquiring normal-resolution data in which X-ray signals outputted from some of the plurality of detection elements are integrated.Type: ApplicationFiled: May 8, 2017Publication date: November 23, 2017Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Yoji KUDO, Masahiko YAMAZAKI, Takashi KANEMARU, Shuya NAMBU, Machiko ISO
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Publication number: 20170205517Abstract: An X-ray detector according to an embodiment includes a scintillator array and a photodiode array. In the scintillator array, a plurality of scintillators are arranged in a first direction and a second direction intersecting the first direction. The photodiode array includes photodiodes each of which is installed for a different one of the scintillators and each of which has an active area configured to convert visible light emitted by the scintillator into an electrical signal. The photodiodes are arranged in such a manner that the widths of the active areas are equal to one another in the first direction.Type: ApplicationFiled: October 24, 2016Publication date: July 20, 2017Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Akira NISHIJIMA, Michito NAKAYAMA, Atsushi HASHIMOTO, Takaya UMEHARA, Shuya NAMBU, Hiroaki MIYAZAKI
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Publication number: 20170095222Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, X-ray detector, data acquisition circuit, and correction circuit. The X-ray tube generates X-rays. The X-ray detector detects the X-rays. The data acquisition circuit acquires data corresponding to an output from the X-ray detector. The correction circuit executes correction processing for third data acquired by the data acquisition circuit in actual scanning, based on first data acquired by the data acquisition circuit in a state of non-irradiation with X-rays before the actual scanning and second data acquired by the data acquisition circuit in the state of non-irradiation with X-rays after the actual scanning.Type: ApplicationFiled: May 25, 2016Publication date: April 6, 2017Applicant: Toshiba Medical Systems CorporationInventors: Atsushi HASHIMOTO, Shuya NAMBU, Takaya UMEHARA, Akira NISHIJIMA, Koichi MIYAMA
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Patent number: 9547090Abstract: An X-ray computed tomography apparatus according to an embodiment includes an X-ray detector that includes a first semiconductor chip including a plurality of elements configured to convert X-rays into an electrical signal, a substrate configured to collect the electrical signal from each element, a second semiconductor chip that is provided between the first semiconductor chip and the substrate and is formed of the same material as that of the first semiconductor chip, a plurality of first electrodes configured to couple each element of the first semiconductor chip to the second semiconductor chip, and a plurality of second electrodes that are configured to couple the second semiconductor chip to the substrate and are larger than the first electrodes. The second semiconductor chip wires the first electrodes and the second electrodes on a one-to-one basis.Type: GrantFiled: July 17, 2015Date of Patent: January 17, 2017Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Keiji Matsuda, Shuya Nambu, Takaya Umehara, Atsushi Hashimoto, Takashi Kanemaru, Akira Nishijima, Koichi Miyama, Tomoe Sagoh
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Patent number: 9480446Abstract: An X-ray detection submodule, comprising: a substrate; a photodiode mounted on the substrate; an X-ray detection element configured to detect an X-ray and convert the X-ray into light; and a light waveguide provided between the photodiode and the X-ray detection element, wherein the light waveguide connects the X-ray detection element with the photodiode such that the substrate is inclinedly disposed with respect to an X-ray detection surface of the X-ray detection element.Type: GrantFiled: April 25, 2014Date of Patent: November 1, 2016Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Atsushi Hashimoto, Akira Nishijima, Shuya Nambu, Yoji Kudo, Masahiko Yamazaki, Tomonori Asada
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Publication number: 20160219686Abstract: According to one embodiment, the X-ray computed tomography apparatus includes an X-ray tube, a rotating frame, a plurality of detector elements, a plurality of DAS elements, switching circuitry, and switching control circuitry. The X-ray tube generates X-rays. The X-ray tube is attached to the rotating frame. The plurality of detector elements detect X-rays. The plurality of DAS elements perform signal processing on output signals from the plurality of detector elements. The switching circuitry is provided between the plurality of detector elements and the plurality of DAS elements. The switching control circuitry controls the switching circuitry to switch the connections between the plurality of detector elements and the plurality of DAS elements for every rotation of the rotating frame at a predetermined angle.Type: ApplicationFiled: January 13, 2016Publication date: July 28, 2016Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems CorporationInventors: Michito NAKAYAMA, Atsushi HASHIMOTO, Tomoe SAGOH, Takaya UMEHARA, Shuya NAMBU, Koichi MIYAMA, Takashi KANEMARU, Keiji MATSUDA, Machiko ISO
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Patent number: 9354331Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a detector, a first DAS, and a second DAS. The radiation detector includes a plurality of detection elements. Each detection element repeatedly detects X-rays generated by the X-ray tube and transmitted through a subject and repeatedly generates an electrical signal corresponding to the energy of the repeatedly detected X-rays. The first DAS acquires the electrical signal detected by part of the imaging region of each detection element in the integral mode. The second DAS acquires the electrical signal detected by the other part of the imaging region of each detection element in the photon count type mode.Type: GrantFiled: September 13, 2012Date of Patent: May 31, 2016Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems CorporationInventors: Tomoe Sagoh, Michito Nakayama, Keiji Matsuda, Shuya Nambu, Atsushi Hashimoto, Takashi Kanemaru
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Patent number: 9320476Abstract: An X-ray CT apparatus according to an embodiment includes an X-ray detector and a collimator unit. The X-ray detector detects X-rays that have passed through a subject. The collimator unit eliminates scattered radiation from X-rays that are incident on the X-ray detector. The collimator unit includes a plurality of collimator modules, a supporter, and a fixing unit. The plurality of collimator modules each includes a plurality of first collimator plates arranged in a grid along a channel direction and a slice direction that are orthogonal to each other. The supporter supports the collimator modules such that the collimator modules are aligned in a plurality of straight lines along the channel direction and in a plurality of straight lines along the slice direction. The fixing unit is provided to the supporter and fixes positions of the collimator modules in the channel direction and the slice direction.Type: GrantFiled: September 22, 2011Date of Patent: April 26, 2016Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Machiko Iso, Yoshiaki Yaoi, Keiji Matsuda, Shuya Nambu, Takashi Kanemaru, Akihiko Taniguchi
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Publication number: 20160081637Abstract: According to one embodiment, a photon-counting apparatus includes an X-ray tube, an X-ray detector, a support mechanism, setting circuitry and data acquisition circuitry. The X-ray detector is configured to repetitively detect an X-ray photon generated by the X-ray tube, and repetitively generate an electrical signal corresponding to the repetitively detected X-ray photon. The support mechanism is configured to support the X-ray tube to be rotatable about a rotation axis. Setting circuitry configured to set one of a time length of a readout period and a readout cycle per unit time for the electrical signal. Data acquisition circuitry is configured to count a count number of electrical signals from the X-ray detector in accordance with the set one of the time length and readout cycle.Type: ApplicationFiled: December 2, 2015Publication date: March 24, 2016Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Medical Systems CorporationInventors: Yasuhiro NOSHI, Shuya NAMBU