Patents by Inventor Machiko Iso
Machiko Iso 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: 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: 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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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: 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: 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: 20150226861Abstract: 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: ApplicationFiled: February 6, 2015Publication date: August 13, 2015Applicants: Kabushiki Kaisha Toshiba, 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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Patent number: 8774352Abstract: An X-ray CT apparatus according to the embodiments has a rotation base that includes a plurality of units, including an X-ray generator that irradiates a subject with X-rays, and an X-ray detector that detects X-rays transmitted through the subject. It also has a pathway that communicates between the X-ray detector and at least one other unit excluding the X-ray generator and the X-ray detector. It also has an air supplier that supplies air in the other units to the X-ray detector via the pathway. It also has a temperature measuring part that measures the temperature in the X-ray detector. It also has a controller that performs control of the air supplier based on the measured result from the temperature measuring part.Type: GrantFiled: July 20, 2011Date of Patent: July 8, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Takashi Kanemaru, Keiji Matsuda, Hiroyuki Ooishi, Michito Nakayama, Machiko Iso
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Publication number: 20120069954Abstract: 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: ApplicationFiled: September 22, 2011Publication date: March 22, 2012Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Machiko Iso, Yoshiaki Yaoi, Keiji Matsuda, Shuya Nambu, Takashi Kanemaru, Akihiko Taniguchi
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Publication number: 20120020453Abstract: An X-ray CT apparatus according to the embodiments has a rotation base that includes a plurality of units, including an X-ray generator that irradiates a subject with X-rays, and an X-ray detector that detects X-rays transmitted through the subject. It also has a pathway that communicates between the X-ray detector and at least one other unit excluding the X-ray generator and the X-ray detector. It also has an air supplier that supplies air in the other units to the X-ray detector via the pathway. It also has a temperature measuring part that measures the temperature in the X-ray detector. It also has a controller that performs control of the air supplier based on the measured result from the temperature measuring part.Type: ApplicationFiled: July 20, 2011Publication date: January 26, 2012Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Takashi KANEMARU, Keiji Matsuda, Hiroyuki Ooishi, Michito Nakayama, Machiko Iso
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Publication number: 20110255658Abstract: An X-ray detector of an X-ray CT apparatus has a plurality of collimators, a plurality of scintillators, a plurality of photodiodes and a light guide. The plurality of collimators collimate an X-ray. The plurality of scintillators respectively emit fluorescence based on the X-ray from the plurality of collimators. The plurality of photodiodes respectively convert the fluorescence from the plurality of scintillators into the electric signal. The light guide has such a shape as to guide the fluorescence emitted from the plurality of scintillators respectively to the plurality of photodiodes while focusing the fluorescence toward the plurality of photodiodes.Type: ApplicationFiled: April 19, 2011Publication date: October 20, 2011Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Keiji MATSUDA, Yoshiaki Yaoi, Machiko Iso, Shuya Nambu, Takashi Kanemaru, Akihiko Taniguchi
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Publication number: 20090225955Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at least three sides.Type: ApplicationFiled: April 3, 2009Publication date: September 10, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa
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Patent number: 7526070Abstract: The angle of each collimator plate with respect to an X ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X ray detector side in a corresponding groove of an abutment plate provided on the X ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate on at least three sides.Type: GrantFiled: April 14, 2006Date of Patent: April 28, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa
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Publication number: 20060233298Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at at least three sides.Type: ApplicationFiled: April 14, 2006Publication date: October 19, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide
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Patent number: 7085343Abstract: An X-ray computed tomography apparatus of this invention includes a first data detecting system which includes a first X-ray tube and a first X-ray detector and a second data detecting system which includes a second X-ray tube and a second X-ray detector. A reconstructing unit reconstructs image data on the basis of the data detected by at least one of the first and second data detecting systems. A monitoring unit monitors the first data detecting system. In a period during which the first data detecting system is normal, data acquisition is performed by both the first and second data detecting systems. In a period during which the first data detecting system is faulty, data acquisition is performed by the second data detecting system alone.Type: GrantFiled: October 17, 2002Date of Patent: August 1, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Shinno, Yuji Yanagida, Shigeyuki Nakashima, Yoshiaki Yaoi, Miwa Okumura, Minoru Horinouchi, Masahiko Yamazaki, Machiko Iso, Satoru Nakanishi
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Publication number: 20030076920Abstract: An X-ray computed tomography apparatus of this invention includes a first data detecting system which includes a first X-ray tube and a first X-ray detector and a second data detecting system which includes a second X-ray tube and a second X-ray detector. A reconstructing unit reconstructs image data on the basis of the data detected by at least one of the first and second data detecting systems. A monitoring unit monitors the first data detecting system. In a period during which the first data detecting system is normal, data acquisition is performed by both the first and second data detecting systems. In a period during which the first data detecting system is faulty, data acquisition is performed by the second data detecting system alone.Type: ApplicationFiled: October 17, 2002Publication date: April 24, 2003Inventors: Toshiyuki Shinno, Yuji Yanagida, Shigeyuki Nakashima, Yoshiaki Yaoi, Miwa Okumura, Minoru Horinouchi, Masahiko Yamazaki, Machiko Iso, Satoru Nakanishi