Patents by Inventor Takaya Umehara
Takaya Umehara 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: 10713823Abstract: When a group of (pre-processed) projection data is stored into a projection-data storage unit, a Gaussian-based expansion-data creating unit creates a group of Gaussian-based expansion data that is expanded from each of the group of projection data through linear combination based on a plurality of Gaussian functions that is stored by a Gaussian-function storage unit and has different center points. A reconstruction-image creating unit then creates a reconstruction image by using the Gaussian-based expansion-data created by the Gaussian-based expansion-data creating unit, and stores the created reconstruction image into an image storage unit.Type: GrantFiled: June 2, 2017Date of Patent: July 14, 2020Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Manabu Teshigawara, Takuzo Takayama, Tomoyasu Komori, Takaya Umehara
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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: 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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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: 20170263022Abstract: When a group of (pre-processed) projection data is stored into a projection-data storage unit, a Gaussian-based expansion-data creating unit creates a group of Gaussian-based expansion data that is expanded from each of the group of projection data through linear combination based on a plurality of Gaussian functions that is stored by a Gaussian-function storage unit and has different center points. A reconstruction-image creating unit then creates a reconstruction image by using the Gaussian-based expansion-data created by the Gaussian-based expansion-data creating unit, and stores the created reconstruction image into an image storage unit.Type: ApplicationFiled: June 2, 2017Publication date: September 14, 2017Applicant: TOSHIBA MEDICAL SYSYTEMS CORPORATIONInventors: Manabu TESHIGAWARA, Takuzo TAKAYAMA, Tomoyasu KOMORI, Takaya UMEHARA
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Patent number: 9747706Abstract: When a group of (pre-processed) projection data is stored into a projection-data storage unit, a Gaussian-based expansion-data creating unit creates a group of Gaussian-based expansion data that is expanded from each of the group of projection data through linear combination based on a plurality of Gaussian functions that is stored by a Gaussian-function storage unit and has different center points. A reconstruction-image creating unit then creates a reconstruction image by using the Gaussian-based expansion-data created by the Gaussian-based expansion-data creating unit, and stores the created reconstruction image into an image storage unit.Type: GrantFiled: February 3, 2010Date of Patent: August 29, 2017Assignee: TOSHIBA MEDICAL SYSYTEMS CORPORATIONInventors: Manabu Teshigawara, Takuzo Takayama, Tomoyasu Komori, Takaya Umehara
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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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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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Publication number: 20160033657Abstract: 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: ApplicationFiled: July 17, 2015Publication date: February 4, 2016Applicants: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Keiji MATSUDA, Shuya NAMBU, Takaya UMEHARA, Atsushi HASHIMOTO, Takashi KANEMARU, Akira NISHIJIMA, Koichi MIYAMA, Tomoe SAGOH
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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: 8604439Abstract: According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit, photodetection unit, measurement unit, calculation unit, and storage unit. The light signal generating unit repeatedly generates light signals. The photodetection unit repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit stores the calculated difference in association with a target second output signal of the second output signals.Type: GrantFiled: December 22, 2010Date of Patent: December 10, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Manabu Teshigawara, Takuzo Takayama, Takaya Umehara, Tomoyasu Komori
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Patent number: 8373131Abstract: A PET apparatus includes an optical coupling detachment testing unit. In one example, the optical coupling detachment testing unit inputs an electric signal to a piezoelectric element or the like adhered to a detector module and generates a sound wave within the detector module. Further, the optical coupling detachment testing unit detects the sound wave propagated within the detector module and performs a frequency analysis on the detected sound wave. Subsequently, as a result of the analysis, the optical coupling detachment testing unit detects whether an optical coupling detachment has occurred by looking for a frequency distribution specific to a surface having an optical coupling detachment and/or comparing a frequency distribution with another frequency distribution from a previous test.Type: GrantFiled: August 16, 2012Date of Patent: February 12, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Manabu Teshigawara, Takuzo Takayama, Yuuji Yanagida, Takaya Umehara
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Publication number: 20120312996Abstract: A PET apparatus includes an optical coupling detachment testing unit. In one example, the optical coupling detachment testing unit inputs an electric signal to a piezoelectric element or the like adhered to a detector module and generates a sound wave within the detector module. Further, the optical coupling detachment testing unit detects the sound wave propagated within the detector module and performs a frequency analysis on the detected sound wave. Subsequently, as a result of the analysis, the optical coupling detachment testing unit detects whether an optical coupling detachment has occurred by looking for a frequency distribution specific to a surface having an optical coupling detachment and/or comparing a frequency distribution with another frequency distribution from a previous test.Type: ApplicationFiled: August 16, 2012Publication date: December 13, 2012Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha ToshibaInventors: Manabu TESHIGAWARA, Takuzo TAKAYAMA, Yuuji YANAGIDA, Takaya UMEHARA
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Publication number: 20110163238Abstract: According to one embodiment, a nuclear medicine diagnosis includes a light signal generating unit, photodetection unit, measurement unit, calculation unit, and storage unit. The light signal generating unit repeatedly generates light signals. The photodetection unit repeatedly generates first output signals corresponding to intensities of the light signals, repeatedly generates second output signals corresponding to intensities of gamma rays emitted from a subject. The measurement unit repeatedly measures light signal detection times and repeatedly measures gamma ray detection times. The calculation unit calculates a difference between a target gamma ray detection time and a target light signal detection time of the light signal detection times for each of the gamma ray detection times. The target light signal detection time is measured before the target gamma ray detection time. The storage unit stores the calculated difference in association with a target second output signal of the second output signals.Type: ApplicationFiled: December 22, 2010Publication date: July 7, 2011Inventors: Manabu TESHIGAWARA, Takuzo Takayama, Takaya Umehara, Tomoyasu Komori
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Publication number: 20100264320Abstract: In a case that a gamma ray has entered into a plurality of scintillators adjacent to each other simultaneously, a detector detects the gamma ray having entered simultaneously. A position calculator calculates the ratio of wave heights representing the energies of the detected gamma ray. The position calculator obtains a trajectory of such a gamma ray that a ratio of distances passed by the gamma ray inside the plurality of scintillators, respectively, coincides with the ratio of the wave heights. The position calculator obtains an intersection between the boundary of the plurality of scintillators and the trajectory, as a passing position of the gamma ray. A reconstructing part executes a back projection process with the trajectory passing through the calculated passing position as a projection position.Type: ApplicationFiled: April 6, 2010Publication date: October 21, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Takuzo Takayama, Manabu Teshigawara, Takaya Umehara, Tomoyasu Komori
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Publication number: 20100195931Abstract: When a group of (pre-processed) projection data is stored into a projection-data storage unit, a Gaussian-based expansion-data creating unit creates a group of Gaussian-based expansion data that is expanded from each of the group of projection data through linear combination based on a plurality of Gaussian functions that is stored by a Gaussian-function storage unit and has different center points. A reconstruction-image creating unit then creates a reconstruction image by using the Gaussian-based expansion-data created by the Gaussian-based expansion-data creating unit, and stores the created reconstruction image into an image storage unit.Type: ApplicationFiled: February 3, 2010Publication date: August 5, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSYTEMS CORPORATIONInventors: Manabu TESHIGAWARA, Takuzo TAKAYAMA, Tomoyasu KOMORI, Takaya UMEHARA