Patents by Inventor Hitoshi Yamagata
Hitoshi Yamagata 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: 20230025920Abstract: A medical information processing apparatus according to an embodiment includes storage circuitry and processing circuitry. The storage circuitry is configured to store therein human body data structured with a plurality of voxels. The processing circuitry is configured to generate human body data by causing each of the voxels in the human body data to store therein composition information based on information about an anatomical structure of a human body, a data value based on medical image data, and relevance to an adjacent voxel.Type: ApplicationFiled: October 6, 2022Publication date: January 26, 2023Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Naoki SASAKI, Hitoshi YAMAGATA
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Patent number: 11544842Abstract: A medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain image data which is generated by scanning a brain of a subject; select a target region from the image data; extract a connected region of which a brain function is associated with a brain function of the target region, as an additional region; and output scan target region including the target region and the additional region.Type: GrantFiled: October 14, 2019Date of Patent: January 3, 2023Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Qiqi Xu, Fanjie Meng, Hitoshi Yamagata
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Patent number: 11544040Abstract: A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.Type: GrantFiled: September 11, 2020Date of Patent: January 3, 2023Assignees: TOHOKU UNIVERSITY, CANON MEDICAL SYSTEMS CORPORATIONInventors: Takahiro Hanyu, Naoya Onizawa, Akira Tamakoshi, Hiroyuki Fujita, Hitoshi Yamagata
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Patent number: 11492585Abstract: According to one embodiment, a cell identification system includes an imaging device and an identification device. The imaging device includes a well plate, a rotation mechanism, and an imaging part. The well plate is provided with a plurality of wells capable of accommodating cells. The rotation mechanism rotates the cells. The imaging part images the cells. The identification device includes processing circuitry. The processing circuitry controls the rotation mechanism to rotate the cells, controls the imaging part to image the cells each time the cells are rotated by the rotation mechanism, and inputs an image for the cells captured by the imaging part to a learned model so as to identify a cell in a good state from among the cells.Type: GrantFiled: May 28, 2020Date of Patent: November 8, 2022Assignee: Canon Medical Systems CorporationInventor: Hitoshi Yamagata
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Publication number: 20220236352Abstract: An information processing apparatus according to an embodiment includes a processing circuit. The processing circuit acquires a measurement field corresponding to a spatial distribution of a predetermined physical quantity in a subject of measurement. The processing circuit calculates an unknown quantity in the subject of measurement based on a first equation between the measurement field and the unknown quantity having spatial dependence, and on the acquired measurement field. The first equation is one that is acquired based on a second equation expressing a dual field divergence of which can be expressed using the measurement field, by using the measurement field and the unknown quantity, and on the Helmholtz decomposition of the dual field.Type: ApplicationFiled: January 27, 2022Publication date: July 28, 2022Applicants: The University of Tokyo, CANON MEDICAL SYSTEMS CORPORATIONInventors: Takaaki NARA, Motofumi FUSHIMI, Naohiro EDA, Seiichi SHIN, Hitoshi YAMAGATA, Koji YANO, Hiroyuki FUJITA
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Patent number: 11331072Abstract: An ultrasound medical device and an ultrasound diagnostic imaging device are provided that allow orally-fed fluid food, etc. to pass through the esophagus of the subject. The ultrasound medical device includes a capsule-type main body configured to incorporate ultrasound transducers, so that the ultrasound transducers in the capsule-type main body, which has been inserted in a tubular body part of a subject, send ultrasound waves to the subject's interiors and receive reflected waves. The ultrasound medical device further includes a support configured to be incorporated in the capsule-type main body and to have a form of tube with a through-hole axially passing through the tube. The ultrasound transducers are arranged external to the tube.Type: GrantFiled: May 29, 2014Date of Patent: May 17, 2022Assignee: Canon Medical Systems CorporationInventors: Hitoshi Yamagata, Makoto Hirama
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Publication number: 20210117159Abstract: A random number generator according to one embodiment includes a write circuit, a read circuit, and a signal output circuit. The write circuit inverts magnetization of a magnetic layer of a magnetic tunnel junction element stochastically by supplying current to the magnetic layer. The read circuit reads the magnetization. The signal output circuit generates a random number on the basis of the magnetization read by the read circuit. The random number generator includes a sequence control circuit that controls the write circuit and the read circuit. The sequence control circuit regulates the write circuit to supply the current to the write circuit in a first period, and causes the read circuit to read the magnetization after the first period is finished and then a second period longer than the first period is elapsed.Type: ApplicationFiled: September 11, 2020Publication date: April 22, 2021Applicants: TOHOKU UNIVERSITY, CANON MEDICAL SYSTEMS CORPORATIONInventors: Takahiro HANYU, Naoya ONIZAWA, Akira TAMAKOSHI, Hiroyuki FUJITA, Hitoshi YAMAGATA
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Patent number: 10888226Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.Type: GrantFiled: November 7, 2019Date of Patent: January 12, 2021Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Hitoshi Yamagata, Masao Yui
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Publication number: 20200377842Abstract: According to one embodiment, a cell identification system includes an imaging device and an identification device. The imaging device includes a well plate, a rotation mechanism, and an imaging part. The well plate is provided with a plurality of wells capable of accommodating cells. The rotation mechanism rotates the cells. The imaging part images the cells. The identification device includes processing circuitry. The processing circuitry controls the rotation mechanism to rotate the cells, controls the imaging part to image the cells each time the cells are rotated by the rotation mechanism, and inputs an image for the cells captured by the imaging part to a learned model so as to identify a cell in a good state from among the cells.Type: ApplicationFiled: May 28, 2020Publication date: December 3, 2020Applicant: Canon Medical Systems CorporationInventor: Hitoshi YAMAGATA
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Patent number: 10765407Abstract: An ultrasound diagnosis apparatus includes an ultrasound transducer, an evaluation value acquisition unit, a determination unit, and an output unit. The evaluation value acquisition unit obtains an evaluation value for evaluating the function of tissue including a predetermined site based on biological information acquired for a predetermined period of time by the ultrasound transducer. The determination unit determines whether the function of the tissue is abnormal based on the evaluation value. The output unit outputs information based on a result of determination by the determination unit.Type: GrantFiled: March 19, 2015Date of Patent: September 8, 2020Assignee: Canon Medical Systems CorporationInventors: Hitoshi Yamagata, Yasuhiko Abe
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Publication number: 20200260976Abstract: An estimating method according to an embodiment is an estimating method for estimating a region of nerve activity, the estimation method including estimating which nerve bundle has conducted an electric current in a subject, based on information representing a three-dimensional structure of nerve bundles and information representing a distribution of a magnetic field near a surface of the subject.Type: ApplicationFiled: February 5, 2020Publication date: August 20, 2020Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Naoki SASAKI, Hitoshi Yamagata
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Patent number: 10672126Abstract: An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a magnetic resonance (MR) image in which objects of interest scattered in a brain of a subject are rendered. The processing circuitry acquires connection information indicating connectivity among a plurality of regions of the brain. The processing circuitry performs an analysis with use of the MR image and the connection information, and calculates analytical values related to the objects of interest and allocated to the regions.Type: GrantFiled: September 7, 2016Date of Patent: June 2, 2020Assignee: Canon Medical Systems CorporationInventors: Masao Yui, Hitoshi Yamagata
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Publication number: 20200167912Abstract: A medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain image data which is generated by scanning a brain of a subject; select a target region from the image data; extract a connected region of which a brain function is associated with a brain function of the target region, as an additional region; and output scan target region including the target region and the additional region.Type: ApplicationFiled: October 14, 2019Publication date: May 28, 2020Applicant: CANON MEDICAL SYSTEMS CORPORATIONInventors: Qiqi XU, Fanjie MENG, Hitoshi YAMAGATA
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Publication number: 20200069185Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.Type: ApplicationFiled: November 7, 2019Publication date: March 5, 2020Applicant: Canon Medical Systems CorporationInventors: Hitoshi YAMAGATA, Masao YUI
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Patent number: 10492687Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.Type: GrantFiled: January 2, 2019Date of Patent: December 3, 2019Assignee: Canon Medical Systems CorporationInventors: Hitoshi Yamagata, Masao Yui
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Patent number: 10413236Abstract: A medical-image processing apparatus according to an embodiment includes an extracting unit, a dividing unit, and an estimating unit. The extracting unit extracts a disease candidate region from a medical image. The dividing unit divides the disease candidate region into multiple partial regions. The estimating unit uses the feature value of each of the partial regions to estimate the disease state of the disease candidate region.Type: GrantFiled: June 23, 2015Date of Patent: September 17, 2019Assignees: Canon Medical Systems Corporation, NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITYInventors: Kota Aoyagi, Hitoshi Yamagata, Mizuho Nishio, Sumiaki Matsumoto
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Publication number: 20190133447Abstract: A magnetic resonance imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to specify a search start position of a matrix representing inter-regional connectivity between a plurality of regions in a brain based on a result of an analysis on an image of a subject and an attention degree set to each of the regions. The processing circuitry is configured to search the matrix using the search start position.Type: ApplicationFiled: January 2, 2019Publication date: May 9, 2019Applicant: Toshiba Medical Systems CorporationInventors: Hitoshi YAMAGATA, Masao Yui
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Patent number: 10268802Abstract: According to one embodiment, a medical image processing apparatus and a medical image processing system includes at least a position detecting unit, a human body chart storage unit, a mapping chart generating unit, and a display. A position detecting unit detects a position of a characteristic local structure in a human body from the medical image. A human body chart storage unit stores a human body chart that represents the human body. A mapping chart generating unit generates a mapping chart that is the human body chart to which a mark indicating a position of the local structure detected by the position detecting unit is added. A display displays the mapping chart.Type: GrantFiled: March 2, 2015Date of Patent: April 23, 2019Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Yosuke Yanagida, Junichi Tashiro, Jyunichi Yoshida, Kousuke Sakaue, Masashi Yoshida, Shigeyuki Ishii, Satoshi Ikeda, Hitoshi Yamagata, Takashi Masuzawa, Naoki Sugiyama, Muneyasu Kazuno
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Patent number: 10255675Abstract: In one embodiment, a medical image processing apparatus includes memory circuitry configured to store a program; and processing circuitry configured, by executing the program, to set a region of interest in a medical image, set an analysis region in the region of interest by reducing the region of interest, and calculate feature amount in the analysis region.Type: GrantFiled: December 12, 2016Date of Patent: April 9, 2019Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kousuke Sakaue, Hitoshi Yamagata
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Patent number: 10234570Abstract: In a PET device, a first detector includes a plurality of first scintillators and detects gamma rays emitted from positron-emitting radionuclides injected into a subject. A second detector is provided on the outer circumferential side of the first detector, includes a plurality of second scintillators arranged in an arrangement surface density lower than that of the first scintillators, and detects gamma rays that have passed through the first detector. A counted information acquiring unit acquires, as first counted information and second counted information, the detection positions, energy values, and detection time regarding gamma rays detected by the first detector and the second detector. Based on the detection time contained in each of the first counted information and the second counted information, an energy value adder generate corrected counted information by summing the energy values contained in the first counted information and the second counted information.Type: GrantFiled: July 10, 2013Date of Patent: March 19, 2019Assignees: Toshiba Medical Systems Corporation, National Institutes for Quantum and Radiological Science and TechnologyInventors: Taiga Yamaya, Takayuki Obata, Iwao Kanno, Takuzo Takayama, Hitoshi Yamagata, Kazuya Okamoto