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particle beam therapy system

A treatment system and particle beam technology, applied in the directions of treatment, X-ray/γ-ray/particle irradiation therapy, radiotherapy, etc., can solve the problems of low energy and increase of penumbra, and achieve the effect of improving penumbra and increasing cost.

Active Publication Date: 2018-04-27
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, for a target located at a position shallower from the surface of the object to be irradiated (hereinafter referred to as a short-range area), a low-energy beam is used for dose distribution formation, so the penumbra increases.

Method used

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Embodiment Construction

[0035] Below, use Figure 1 to Figure 16 , the configuration and operation of a particle beam therapy system according to an embodiment of the present invention will be described. figure 1 It is a block diagram showing the overall configuration of a particle beam therapy system according to an embodiment of the present invention. The particle beam therapy system includes an irradiation compensating device (hereinafter, referred to as a short-range applicator) 101 for a short-range region and a proton beam irradiation device 102 . In the present embodiment, the proton beam irradiation device 102 is described as an example, but the present invention can also be applied to a heavy particle beam irradiation device using particles (such as carbon beams) with a mass heavier than protons.

[0036] Such as figure 1 As shown, the proton beam irradiation device 102 has a proton beam generator 103 , a proton beam delivery device 104 and a rotary irradiation device 105 . In addition, i...

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Abstract

The particle beam therapy system of the present invention includes an irradiation compensating device for a short-range range composed of an energy absorber, a first collimator, and a second collimator. The radiation compensation device is characterized in that it includes a mechanism for attaching and detaching the energy absorber, the first collimator, and the second collimator. By disposing the first collimator on the upstream side where the beam diameter is small, the width of the compensation device can be reduced, contributing to the size and weight of the compensation device. The second collimator is arranged on the downstream side and contributes to the improvement of penumbra.

Description

technical field [0001] The present invention relates to a particle beam therapy system. Background technique [0002] In particle beam therapy, the scanning irradiation method is gaining popularity. In the scanning irradiation method, a target is divided into minute areas (hereinafter referred to as spots) and a beam of small diameter is irradiated for each spot. When a predetermined dose is applied to a certain point, the irradiation of the beam is stopped, and the beam is scanned to the next point. In the case of scanning the beam in a direction (hereinafter referred to as lateral direction) perpendicular to the traveling direction of the beam (hereinafter referred to as depth direction), a scanning electromagnet is used. For a certain depth, when a given dose is given to all points, the beam is scanned in the depth direction. In the case of scanning the beam in the depth direction, the energy of the beam is changed by an accelerator or a range shifter. Ultimately, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/10A61N2005/1087A61N2005/1095A61N5/1081A61N5/1043A61N5/1077A61N5/1031A61N5/1065A61N5/1045
Inventor 高柳泰介松田浩二品川亮介中岛千博西村荒雄白土博树松浦妙子清水伸一鬼丸力也梅垣菊男
Owner HITACHI LTD