Patents by Inventor Kazunao Maeda
Kazunao Maeda 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: 10118053Abstract: A movable part tracking and treatment apparatus includes an acquisition unit adapted to acquire a three-dimensional moving image and a first projection image generation unit adapted to generate a first projection moving image. The apparatus further includes an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image and a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image. The apparatus also includes a first parameter derivation unit adapted to derive a first parameter indicative of position information on a beam irradiation point and a second parameter derivation unit adapted to derive a second parameter necessary to extract the corresponding tracing target.Type: GrantFiled: October 30, 2017Date of Patent: November 6, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koki Yanagawa, Shinya Fukushima, Kazunao Maeda, Keiko Okaya
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Publication number: 20180064956Abstract: According to one embodiment, A movable part tracking and treatment apparatus, includes: an acquisition unit adapted to acquire a three-dimensional moving image by imaging an inside of a body of a patient; a first projection image generation unit adapted to generate a first projection moving image by projecting the three-dimensional moving image on a two-dimensional surface from a fixed direction, the three-dimensional moving image including a tracing target and an affected part area that are part of internal organs in a displaced state, an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image, a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image, a first parameter derivation unit is adapted to derive a first parameter indicative of position information on a beam irradiation point selected from the displaced affected part area in the first projection moving image, anType: ApplicationFiled: October 30, 2017Publication date: March 8, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koki YANAGAWA, Shinya FUKUSHIMA, Kazunao MAEDA, Keiko OKAYA
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Patent number: 9844686Abstract: According to one embodiment, A movable part tracking and treatment apparatus, includes: an acquisition unit adapted to acquire a three-dimensional moving image by imaging an inside of a body of a patient; a first projection image generation unit adapted to generate a first projection moving image by projecting the three-dimensional moving image on a two-dimensional surface from a fixed direction, the three-dimensional moving image including a tracing target and an affected part area that are part of internal organs in a displaced state, an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image, a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image, a first parameter derivation unit is adapted to derive a first parameter indicative of position information on a beam irradiation point selected from the displaced affected part area in the first projection moving image, anType: GrantFiled: December 18, 2015Date of Patent: December 19, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koki Yanagawa, Shinya Fukushima, Kazunao Maeda, Keiko Okaya
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Publication number: 20160175615Abstract: According to one embodiment, A movable part tracking and treatment apparatus, includes: an acquisition unit adapted to acquire a three-dimensional moving image by imaging an inside of a body of a patient; a first projection image generation unit adapted to generate a first projection moving image by projecting the three-dimensional moving image on a two-dimensional surface from a fixed direction, the three-dimensional moving image including a tracing target and an affected part area that are part of internal organs in a displaced state, an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image, a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image, a first parameter derivation unit is adapted to derive a first parameter indicative of position information on a beam irradiation point selected from the displaced affected part area in the first projection moving image, anType: ApplicationFiled: December 18, 2015Publication date: June 23, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koki YANAGAWA, Shinya Fukushima, Kazunao Maeda, Keiko Okaya
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Patent number: 8487282Abstract: A particle beam irradiation apparatus that can measure and display a dose two-dimensional distribution during scan while reducing degradation of a particle beam shape, including a particle beam generation portion; a particle beam emission control portion; a two-dimensional beam scanning portion; a sensor portion including first linear electrodes arranged in parallel in a first direction and second linear electrodes arranged in parallel in a second direction orthogonal to the first direction; a beam shape calculation portion that calculates a center of gravity of the particle beam from outputs of each the first linear and second linear electrodes and that obtains a two-dimensional beam shape of the particle beam around the center of gravity; a storage portion that accumulates and stores the two-dimensional beam shapes; and a display portion that displays the two-dimensional beam shapes as a two-dimensional distribution of a dose.Type: GrantFiled: February 7, 2011Date of Patent: July 16, 2013Assignees: Kabushiki Kaisha Toshiba, National Institute of Radiological SciencesInventors: Yasushi Iseki, Katsushi Hanawa, Kazunao Maeda, Nobukazu Kakutani, Takuji Furukawa, Taku Inaniwa, Shinji Sato, Kouji Noda
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Patent number: 8334509Abstract: A particle beam irradiation apparatus includes a beam scanning indication unit which two-dimensionally indicates a position of a particle beam in series for each of slices obtained by dividing an affected area to be irradiated in an axial direction of the particle beam, a beam scanning unit which two-dimensionally scans the particle beam based on an indication signal from the beam scanning indication unit, a phosphor film which is provided between the beam scanning unit and a patient and emits light in an amount corresponding to a particle dose of the particle beam transmitting therethrough, an imaging unit which images the phosphor film for each of the slices, and a display unit which obtains an irradiation dose distribution of each of the slices from image data imaged by the imaging unit and displays the obtained irradiation dose distribution associated with a scanning position of the particle beam.Type: GrantFiled: August 20, 2010Date of Patent: December 18, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Yasushi Iseki, Masao Takahashi, Katsushi Hanawa, Kazunao Maeda, Atsuo Inoue, Teruyasu Nagafuchi, Nobukazu Kakutani
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Publication number: 20120305796Abstract: Provided is a particle beam irradiation apparatus that can measure and display a dose two-dimensional distribution during scan with a simple configuration, while reducing degradation of a particle beam shape.Type: ApplicationFiled: February 7, 2011Publication date: December 6, 2012Applicants: National Institute of Radiological Sciences, KABUSHIKI KAISHA TOSHIBAInventors: Yasushi Iseki, Katsushi Hanawa, Kazunao Maeda, Nobukazu Kakutani, Takuji Furukawa, Taku Inaniwa, Shinji Sato, Kouji Noda
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Publication number: 20110049372Abstract: The particle beam irradiation apparatus according to the present invention comprises: a beam generation unit; a beam emission control unit which controls emission of the particle beam; a beam scanning indication unit which two-dimensionally indicates a position of the particle beam in series for each of slices obtained by dividing an affected area to be irradiated in an axial direction of the particle beam; a beam scanning unit which two-dimensionally scans the particle beam based on an indication signal from the beam scanning indication unit; a phosphor film which is provided between the beam scanning unit and a patient and emits light in an amount corresponding to a particle dose of the particle beam transmitting therethrough; an imaging unit which images the phosphor film for each slice; and a display unit which obtains an irradiation dose distribution of each slice from image data imaged by the imaging unit and displays the obtained irradiation dose distribution associated with a scanning position of theType: ApplicationFiled: August 20, 2010Publication date: March 3, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Yasushi ISEKI, Masao TAKAHASHI, Katsushi HANAWA, Kazunao MAEDA, Atsuo INOUE, Teruyasu NAGAFUCHI, Nobukazu KAKUTANI