Patents by Inventor Taeko Matsuura
Taeko Matsuura 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: 11904185Abstract: A proton beam therapy system 1 includes an irradiation nozzle 25 for irradiating a target 31A with a particle beam, a proton beam irradiation control system 41 that controls the irradiation nozzle 25, a dose monitor 27B that measures an irradiation amount of the particle beam emitted to the target 31A, a position monitor 27A that measures a position of the particle beam emitted to the target 31A, and a dose distribution evaluation system during irradiation 55 that calculates a dose distribution of the particle beam emitted to the target 31A during irradiation. This system supports a medical staff to quickly and appropriately make an intervention determination for treatment such as discontinuation of particle therapy, a change in conditions thereof, or the like in the process of particle irradiation.Type: GrantFiled: November 15, 2019Date of Patent: February 20, 2024Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Shusuke Hirayama, Rintarou Fujimoto, Masumi Umezawa, Yuusuke Fujii, Keiji Kobashi, Taeko Matsuura, Shinichi Shimizu
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Patent number: 11883683Abstract: A particle therapy system includes an accelerator 1 which generates a particle beam for extraction, an irradiation apparatus 21 which irradiates the particle beam to an irradiation target 26, a gantry 18 which rotates together with the irradiation apparatus 21, and an MRI apparatus 50 which rotates together with the gantry 18. The MRI apparatus 50 includes a magnetic circuit composed of an iron core 60 and a plurality of coils 61 serving as a magnetic flux source. The iron core 60 includes two oppositely disposed magnetic poles 63A and 63B, and a return yoke 64 for connecting the magnetic poles 63A and 63B. The magnetic poles 63A, 63B have cavities 65A, 65B. The particle beam passing through the cavity 65A is irradiated to the irradiation target 26.Type: GrantFiled: April 11, 2019Date of Patent: January 30, 2024Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Yusuke Fujii, Ryuya Ando, Manabu Aoki, Kikuo Umegaki, Shinichi Shimizu, Taeko Matsuura, Hiroki Shirato
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Publication number: 20220314027Abstract: A treatment planning system that generates treatment planning for irradiating a target with a particle beam, includes an arithmetic processing device that sets at least two or more irradiation patterns for one treatment planning, calculates a plurality of predicted dose distributions for each irradiation pattern based on a target dose set for each region for at least one region including a region of the target, and calculates an index for evaluating validity of the irradiation pattern based on the plurality of predicted dose distributions.Type: ApplicationFiled: December 9, 2021Publication date: October 6, 2022Inventors: Taisuke TAKAYANAGI, Takahiro YAMADA, Yusuke FUJII, Toru UMEKAWA, Hiroki SHIRATO, Shinichi SHIMIZU, Taeko MATSUURA, Naoki MIYAMOTO, Seishin TAKAO, Yuichi HIRATA, Sodai TANAKA
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Patent number: 11446520Abstract: Through the present invention, three-dimensional coordinates of a tracking object moving in an irradiation object can be calculated from fluoroscopic X-ray images captured and acquired from various angles in a single fluoroscopic X-ray device mounted to a radiation therapy apparatus. The three-dimensional coordinates of the tracking object are calculated on a straight tracking object presence line connecting an X-ray generating device for fluoroscopy and the position in an X-ray plane detector of the tracking object on the fluoroscopic X-ray image acquired by the X-ray generating device for fluoroscopy and the X-ray plane detector, and using line segment information included in a movement region of the tracking object set in advance.Type: GrantFiled: March 12, 2018Date of Patent: September 20, 2022Assignee: National Univ. Corporation Hokkaido Univ.Inventors: Takaaki Fujii, Seishin Takao, Naoki Miyamoto, Taeko Matsuura, Kikuo Umegaki
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Publication number: 20210393985Abstract: A proton beam therapy system 1 includes an irradiation nozzle 25 for irradiating a target 31A with a particle beam, a proton beam irradiation control system 41 that controls the irradiation nozzle 25, a dose monitor 27B that measures an irradiation amount of the particle beam emitted to the target 31A, a position monitor 27A that measures a position of the particle beam emitted to the target 31A, and a dose distribution evaluation system during irradiation 55 that calculates a dose distribution of the particle beam emitted to the target 31A during irradiation. This system supports a medical staff to quickly and appropriately make an intervention determination for treatment such as discontinuation of particle therapy, a change in conditions thereof, or the like in the process of particle irradiation.Type: ApplicationFiled: November 15, 2019Publication date: December 23, 2021Inventors: Shusuke HIRAYAMA, Rintarou FUJIMOTO, Masumi UMEZAWA, Yuusuke FUJII, Keiji KOBASHI, Taeko MATSUURA, Shinichi SHIMIZU
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Publication number: 20210154495Abstract: A particle therapy system includes an accelerator 1 which generates a particle beam for extraction, an irradiation apparatus 21 which irradiates the particle beam to an irradiation target 26, a gantry 18 which rotates together with the irradiation apparatus 21, and an MRI apparatus 50 which rotates together with the gantry 18. The MRI apparatus 50 includes a magnetic circuit composed of an iron core 60 and a plurality of coils 61 serving as a magnetic flux source. The iron core 60 includes two oppositely disposed magnetic poles 63A and 63B, and a return yoke 64 for connecting the magnetic poles 63A and 63B. The magnetic poles 63A, 63B have cavities 65A, 65B. The particle beam passing through the cavity 65A is irradiated to the irradiation target 26.Type: ApplicationFiled: April 11, 2019Publication date: May 27, 2021Inventors: Yusuke FUJII, Ryuya ANDO, Manabu AOKI, Kikuo UMEGAKI, Shinichi SHIMIZU, Taeko MATSUURA, Hiroki SHIRATO
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Patent number: 10835764Abstract: A function/process of recording marker position data and spot data is provided. The marker position data includes position information of a marker 29 measured for tumor tracking irradiation and information on time of execution of X-ray imaging. The spot data includes information on time of irradiation of each spot, a delivered irradiation position, and a delivered irradiation amount. The marker position data and the spot data are synchronized based on the time information, and by using the marker position data and the spot data upon spot irradiation, a delivered dose distribution of proton irradiation is calculated. With this configuration, it is possible to take the influence of interplay effect into consideration, and it is possible to support to make more appropriate determination upon replanning of a treatment plan.Type: GrantFiled: March 23, 2017Date of Patent: November 17, 2020Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Yusuke Fujii, Taeko Matsuura, Yuka Matsuzaki, Kikuo Umegaki, Hiroki Shirato, Hidenori Koyano, Takahiro Yamada, Rintarou Fujimoto
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Publication number: 20200054897Abstract: A function/process of recording marker position data and spot data is provided. The marker position data includes position information of a marker 29 measured for tumor tracking irradiation and information on time of execution of X-ray imaging. The spot data includes information on time of irradiation of each spot, a delivered irradiation position, and a delivered irradiation amount. The marker position data and the spot data are synchronized based on the time information, and by using the marker position data and the spot data upon spot irradiation, a delivered dose distribution of proton irradiation is calculated. With this configuration, it is possible to take the influence of interplay effect into consideration, and it is possible to support to make more appropriate determination upon replanning of a treatment plan.Type: ApplicationFiled: March 23, 2017Publication date: February 20, 2020Inventors: Yusuke FUJII, Taeko MATSUURA, Yuka MATSUZAKI, Kikuo UMEGAKI, Hiroki SHIRATO, Hidenori KOYANO, Takahiro YAMADA, Rintarou FUJIMOTO
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Publication number: 20200009404Abstract: Through the present invention, three-dimensional coordinates of a tracking object moving in an irradiation object can be calculated from fluoroscopic X-ray images captured and acquired from various angles in a single fluoroscopic X-ray device mounted to a radiation therapy apparatus. The three-dimensional coordinates of the tracking object are calculated on a straight tracking object presence line connecting an X-ray generating device for fluoroscopy and the position in an X-ray plane detector of the tracking object on the fluoroscopic X-ray image acquired by the X-ray generating device for fluoroscopy and the X-ray plane detector, and using line segment information included in a movement region of the tracking object set in advance (S104).Type: ApplicationFiled: March 12, 2018Publication date: January 9, 2020Inventors: Takaaki Fujii, Seishin Takao, Naoki Miyamoto, Taeko Matsuura, Kikuo Umegaki
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Patent number: 10143436Abstract: The particle therapy system includes a particle beam generator for generating a particle beam; an irradiation nozzle arranged in a treatment room and irradiating a target with the particle beam; a particle beam transport system communicating the particle beam generator with the irradiation nozzle; an X-ray imaging device arranged in the treatment room and imaging the position of the target through irradiation with X-rays; a dosimeter arranged at a position passed by the particle beam in the irradiation nozzle; and a control apparatus performing control to exclude the measurement result of the X-rays from the measurement result obtained using the dosimeter when the X-rays are emitted during treatment.Type: GrantFiled: October 10, 2013Date of Patent: December 4, 2018Assignee: Hitachi, Ltd.Inventors: Arao Nishimura, Koji Matsuda, Ryosuke Shinagawa, Taisuke Takayanagi, Masahiro Tadokoro, Takao Kidani, Hideaki Nihongi, Kikuo Umegaki, Taeko Matsuura
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Patent number: 9899112Abstract: A structure configuring a ridge filter has line symmetry about a line vertical to a depth direction passing the center of the structure. A small structure obtained in such a way that the structure is divided by this line has a bilaterally asymmetric shape about a center line in an iterative direction, and has a point symmetric shape about an intersection between the center line in the iterative direction and the center line in the depth direction. Thicknesses in the iterative direction of an uppermost stream surface and a lowermost stream surface in the depth direction are equal to each other. The structure is configured so that a thick portion in the iterative direction of the uppermost stream surface and the lowermost stream surface is not present in the depth direction.Type: GrantFiled: February 21, 2017Date of Patent: February 20, 2018Assignees: Hitachi, Ltd., National University Corporation Hokkaido UniversityInventors: Taisuke Takayanagi, Shinichiro Fujitaka, Chihiro Nakashima, Tomoki Murata, Taeko Matsuura, Naoki Miyamoto, Kikuo Umegaki, Yuichi Hirata
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Patent number: 9750957Abstract: A charged particle irradiation system is capable of shortening the irradiation time and the treatment time by performing efficient irradiation even when irregular variation occurs in the irradiation object during the gating irradiation. The extraction of the beam is stopped upon reception of a regular extraction permission end signal which is outputted based on a regular movement signal. An extractable state maintaining function operates upon the reception of the extraction permission end signal. When a preset standby time elapses without receiving an extraction permission start signal again during the standby time, the extractable state maintaining function finishes its operation and a charged particle beam generator decelerates the beam. Also, the extraction of the beam is stopped due to reception of an irregular extraction permission end signal during the irradiation. When the extraction permission start signal is received again during the standby time, the extraction of the beam is restarted.Type: GrantFiled: June 1, 2015Date of Patent: September 5, 2017Assignee: Hitachi, Ltd.Inventors: Yusuke Fujii, Toru Umekawa, Masumi Umezawa, Hiroki Shirato, Kikuo Umegaki, Naoki Miyamoto, Taeko Matsuura
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Publication number: 20170243665Abstract: A structure configuring a ridge filter has line symmetry about a line vertical to a depth direction passing the center of the structure. A small structure obtained in such a way that the structure is divided by this line has a bilaterally asymmetric shape about a center line in an iterative direction, and has a point symmetric shape about an intersection between the center line in the iterative direction and the center line in the depth direction. Thicknesses in the iterative direction of an uppermost stream surface and a lowermost stream surface in the depth direction are equal to each other. The structure is configured so that a thick portion in the iterative direction of the uppermost stream surface and the lowermost stream surface is not present in the depth direction.Type: ApplicationFiled: February 21, 2017Publication date: August 24, 2017Inventors: Taisuke TAKAYANAGI, Shinichiro FUJITAKA, Chihiro NAKASHIMA, Tomoki MURATA, Taeko MATSUURA, Naoki MIYAMOTO, Kikuo UMEGAKI, Yuichi HIRATA
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Patent number: 9724049Abstract: A radiotherapy system acquires an image which is necessary for positioning of a patient for radiation treatment and enables grasping of a positional relationship of a target in a treatment radiation irradiated state, a radiation passing area and a critical organ. An X-ray imaging device is attached to the rotatable support device and configured to apply X-rays to the subject from plural directions while rotating around the subject to perform X-ray imaging. A target recognizing device recognizes a three-dimensional position of the target in the subject from X-ray images acquired by the X-ray imaging device; and CT image generating devices are configured to select, from the X-ray images acquired by the X-ray imaging device, the images in which the position of the target recognized by the recognizing device satisfies the treatment radiation irradiation condition for the motion tracking treatment to perform image reconstruction and generate a cone beam CT image.Type: GrantFiled: August 4, 2014Date of Patent: August 8, 2017Assignee: Hitachi, Ltd.Inventors: Toru Umekawa, Kazuo Hiramoto, Rika Baba, Toshie Sasaki, Yoshihiko Nagamine, Shinichi Shimizu, Seishin Takao, Naoki Miyamoto, Taeko Matsuura, Kikuo Umegaki
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Patent number: 9616249Abstract: A radiotherapy control apparatus includes a fluoroscopic image acquisition unit to acquire fluoroscopic images of markers in a patient from a single fluoroscopic imaging device, a projection line calculation unit to identify projected positions of the markers on the fluoroscopic image and calculate equations of projection lines linking these projected positions and a focus position of the imaging device, an inter-marker distance acquisition unit to acquire a distance between each pair of the markers, a marker position calculation unit to calculate current positions of the markers based on the equations and the distances, and a therapeutic radiation emission determination unit to determine whether to emit therapeutic radiation based on the current positions of the markers.Type: GrantFiled: February 26, 2013Date of Patent: April 11, 2017Assignee: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Naoki Miyamoto, Shinichi Shimizu, Taeko Matsuura, Chie Toramatsu, Seishin Takao, Hideaki Nihongi, Yuichi Hirata, Kikuo Umegaki
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Patent number: 9492684Abstract: The present invention provides a particle therapy system including an irradiation compensating device made up of an energy absorber, a first collimator, and a second collimator for use in a short-range region. The irradiation compensating device is characterized by a mechanism for attaching and detaching the first energy absorber, first collimator, and second collimator. The first collimator is located upstream where the beam diameter is small with a view to suppressing the width of the compensating device, thereby contributing to making the compensating device small and lightweight. The second collimator is located downstream to improve penumbrae.Type: GrantFiled: October 10, 2013Date of Patent: November 15, 2016Assignee: Hitachi, Ltd.Inventors: Taisuke Takayanagi, Koji Matsuda, Ryosuke Shinagawa, Chihiro Nakashima, Arao Nishimura, Hiroki Shirato, Taeko Matsuura, Shinichi Shimizu, Rikiya Onimaru, Kikuo Umegaki
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Publication number: 20150374324Abstract: There is provided a particle therapy system including: a particle beam generator for generating a particle beam; an irradiation nozzle arranged in a treatment room and irradiating a target with the particle beam; a particle beam transport system 6 communicating the particle beam generator with the irradiation nozzle; an X-ray imaging device arranged in the treatment room and imaging the position of the target through irradiation with X-rays; a dosimeter 8 arranged at a position passed by the particle beam in the irradiation nozzle; and a control apparatus 400 performing control to exclude the measurement result of the X-rays from the measurement result obtained using the dosimeter 8 when the X-rays are emitted during treatment.Type: ApplicationFiled: October 10, 2013Publication date: December 31, 2015Inventors: Arao NISHIMURA, Koji MATSUDA, Ryosuke SHINAGAWA, Taisuke TAKAYANAGI, Masahiro TADOKORO, Takao KIDANI, Hideaki NIHONGI, Kikuo UMEGAKI, Taeko MATSUURA
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Publication number: 20150352372Abstract: The present invention provides a particle therapy system including an irradiation compensating device made up of an energy absorber, a first collimator, and a second collimator for use in a short-range region. The irradiation compensating device is characterized by a mechanism for attaching and detaching the first energy absorber, first collimator, and second collimator. The first collimator is located upstream where the beam diameter is small with a view to suppressing the width of the compensating device, thereby contributing to making the compensating device small and lightweight. The second collimator is located downstream to improve penumbrae.Type: ApplicationFiled: October 10, 2013Publication date: December 10, 2015Inventors: Taisuke TAKAYANAGI, Koji MATSUDA, Ryosuke SHINAGAWA, Chihiro NAKASHIMA, Arao NISHIMURA, Hiroki SHIRATO, Taeko MATSUURA, Shinichi SHIMIZU, Rikiya ONIMARU, Kikuo UMEGAKI
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Publication number: 20150290475Abstract: A charged particle irradiation system is capable of shortening the irradiation time and the treatment time by performing efficient irradiation even when irregular variation occurs in the irradiation object during the gating irradiation. The extraction of the beam is stopped upon reception of a regular extraction permission end signal which is outputted based on a regular movement signal. An extractable state maintaining function operates upon the reception of the extraction permission end signal. When a preset standby time elapses without receiving an extraction permission start signal again during the standby time, the extractable state maintaining function finishes its operation and a charged particle beam generator decelerates the beam. Also, the extraction of the beam is stopped due to reception of an irregular extraction permission end signal during the irradiation. When the extraction permission start signal is received again during the standby time, the extraction of the beam is restarted.Type: ApplicationFiled: June 1, 2015Publication date: October 15, 2015Inventors: Yusuke FUJII, Toru UMEKAWA, Masumi UMEZAWA, Hiroki SHIRATO, Kikuo UMEGAKI, Naoki MIYAMOTO, Taeko MATSUURA
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Patent number: 9061144Abstract: A charged particle irradiation system is capable of shortening the irradiation time and the treatment time by performing efficient irradiation even when irregular variation occurs in the irradiation object during the gating irradiation. The extraction of the beam is stopped upon reception of a regular extraction permission end signal which is outputted based on a regular movement signal. An extractable state maintaining function operates upon the reception of the extraction permission end signal. When a preset standby time elapses without receiving an extraction permission start signal again during the standby time, the extractable state maintaining function finishes its operation and a charged particle beam generator decelerates the beam. Also, the extraction of the beam is stopped due to reception of an irregular extraction permission end signal during the irradiation. When the extraction permission start signal is received again during the standby time, the extraction of the beam is restarted.Type: GrantFiled: November 14, 2012Date of Patent: June 23, 2015Assignees: HITACHI, LTD., NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Yusuke Fujii, Toru Umekawa, Masumi Umezawa, Hiroki Shirato, Kikuo Umegaki, Naoki Miyamoto, Taeko Matsuura