公开(公告)号：US20150099918A1

公开(公告)日：2015-04-09

申请号：US14497891

申请日：2014-09-26

Applicant: HITACHI, LTD.

Inventor： Taisuke TAKAYANAGI ,  Shinichiro FUJITAKA ,  Chihiro NAKASHIMA ,  Koji MATSUDA

IPC: A61N5/10 ,  G01T1/02

CPC classification number: A61N5/1071 ,  G01T1/02 ,  G01T1/29

Abstract: A radiation measuring device having a plurality of sensors configured to generate charges in response to the radiation includes a signal processing device. The signal processing device uses an signal generated by a proton beam irradiation device upon changing of beam energy and causes accumulation values of charges output from the sensors to be separately stored in a main control device for each value of the energy. The main control device calculates depth dose profiles for values of the beam energy from the accumulation values stored in the main control device and representing the charges. The main control device calculates a range of the beam for each of the values of the beam energy from the depth dose profiles, corrects the depth dose profiles for the values of the beam energy using a correction coefficient that depends on the range and sums the corrected depth dose profiles.

Abstract translation: 具有被配置为响应于辐射产生电荷的多个传感器的辐射测量装置包括信号处理装置。 信号处理装置在改变光束能量时使用由质子束照射装置产生的信号，并且使得从各个传感器输出的电荷的积累值分别存储在主控制装置中，用于每个能量值。 主控制装置根据存储在主控装置中的积累值计算束能量的深度剂量分布，并表示电荷。 主控制装置根据深度剂量分布计算波束能量的每个值的波束的范围，使用取决于范围的校正系数校正波束能量的深度剂量分布，并且将校正的 深度剂量分布。

公开(公告)号：US20210370094A1

公开(公告)日：2021-12-02

申请号：US17272705

申请日：2019-10-24

Applicant: Hitachi, Ltd.

Inventor： Taizo HONDA ,  Tatsuya FUJISAWA ,  Chihiro NAKASHIMA ,  Tomokazu SHIMAKURA

IPC: A61N5/10

Abstract: A radiation therapy apparatus that enhances the reliability and ease of use of a treatment is provided. A radiation therapy apparatus includes: a treatment bed moving a top plate with an object to be treated Pt placed on the top plate to a predetermined treatment location; an imaging apparatus moving to the predetermined treatment location from a direction different from the direction of movement of the top plate and picking up an image of the object to be treated; and an irradiation apparatus provided between the treatment bed and the imaging apparatus, extensible, and applying a radioactive ray to the object to be treated. When the CT apparatus moves to the treatment location, the irradiation apparatus moves to a predetermined waiting position P1. When applying a radioactive ray to an object to be treated, the irradiation apparatus moves to a predetermined irradiation position P3.

公开(公告)号：US20200261745A1

公开(公告)日：2020-08-20

申请号：US16675517

申请日：2019-11-06

Applicant: Hitachi, Ltd.

Inventor： Tomokazu SHIMAKURA ,  Chihiro NAKASHIMA ,  Satoshi TOTAKE ,  Kazuo TOMIDA ,  Takeshi FUJITA

IPC: A61N5/10

Abstract: To provide a particle beam therapy device that expands an irradiation field while avoiding an increase in size of a scanning unit or an irradiation device including the scanning unit. A shift unit 36 is provided downstream of a scanning unit 34. The shift unit 36 deflects a carbon beam as a particle beam to shift the irradiation field, thereby forming an expanded irradiation field. The shift unit 36 includes a first shift electromagnet 42 that shifts the irradiation field in a Y direction and a second shift electromagnet 44 that shifts the irradiation field in an X direction. The scanning unit is dynamically controlled, and the shift unit 36 is statically controlled.

公开(公告)号：US20170243665A1

公开(公告)日：2017-08-24

申请号：US15437826

申请日：2017-02-21

Applicant: Hitachi, Ltd. ,  NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

Inventor： Taisuke TAKAYANAGI ,  Shinichiro FUJITAKA ,  Chihiro NAKASHIMA ,  Tomoki MURATA ,  Taeko MATSUURA ,  Naoki MIYAMOTO ,  Kikuo UMEGAKI ,  Yuichi HIRATA

IPC: G21K1/10 ,  G21K5/04 ,  H05H13/04

CPC classification number: G21K1/10 ,  A61N5/1077 ,  A61N2005/1087 ,  A61N2005/1095 ,  G21K5/04 ,  H05H7/12 ,  H05H13/04 ,  H05H2007/004

Abstract: 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.

公开(公告)号：US20240189625A1

公开(公告)日：2024-06-13

申请号：US18279427

申请日：2022-02-15

Applicant: Hitachi, Ltd.

Inventor： Taizo HONDA ,  Chihiro NAKASHIMA ,  Tomokazu SHIMAKURA

IPC: A61N5/10

CPC classification number: A61N5/1081 ,  A61N5/1078

Abstract: To implement downsizing of an apparatus and highly accurate beam irradiation. An irradiation nozzle 4 that irradiates a target object Pt with a radiotherapy beam includes: a nozzle base part 42 fixed on a beam axis 40 through which the radiotherapy beam passes; and a nozzle tip part that irradiates the target object with the radiotherapy beam that has passed through the nozzle base part, in which the nozzle tip part is fixed at a first position when the target object is irradiated with the radiotherapy beam and is fixed at a second position when the target object is imaged, and a curved movement path in which the nozzle tip part is movable between the first position and the second position is provided.

公开(公告)号：US20150352372A1

公开(公告)日：2015-12-10

申请号：US14763595

申请日：2013-10-10

Applicant: Hitachi, Ltd. ,  National University Corporation Hokkaido University

Inventor： Taisuke TAKAYANAGI ,  Koji MATSUDA ,  Ryosuke SHINAGAWA ,  Chihiro NAKASHIMA ,  Arao NISHIMURA ,  Hiroki SHIRATO ,  Taeko MATSUURA ,  Shinichi SHIMIZU ,  Rikiya ONIMARU ,  Kikuo UMEGAKI

IPC: A61N5/10

CPC classification number: A61N5/1043 ,  A61N5/10 ,  A61N5/1031 ,  A61N5/1045 ,  A61N5/1065 ,  A61N5/1077 ,  A61N5/1081 ,  A61N2005/1087 ,  A61N2005/1095

Abstract: 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.

Abstract translation: 本发明提供了一种粒子治疗系统，其包括由能量吸收器，第一准直仪和第二准直仪构成的照射补偿装置，用于短距离区域。 照射补偿装置的特征在于用于附接和分离第一能量吸收器，第一准直器和第二准直器的机构。 第一准直器位于光束直径小的上游，以抑制补偿装置的宽度，从而有助于使补偿装置小而轻。 第二个准直器位于下游，以改善半暗带。