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Collimator and treatment head with same

A collimator and block technology, applied in the field of treatment heads, can solve the problems of reducing the penumbra area, the penumbra area of ​​the projection field is large, and the collimator cannot provide continuous change, etc., so as to reduce the penumbra area and improve the effect of treatment

Pending Publication Date: 2021-11-19
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a collimator that can provide a continuously changing field of view and reduce the penumbra area in view of the problems that the traditional collimator cannot provide a continuously changing field of view and the penumbra area is large

Method used

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  • Collimator and treatment head with same
  • Collimator and treatment head with same
  • Collimator and treatment head with same

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Embodiment Construction

[0057] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0058] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to a collimator and a treatment head with the same. The collimator comprises: at least one layer of stop dog assembly, wherein each layer of stop dog assembly comprises at least two stop dogs, the at least two stop dogs are sequentially arranged in a circumferential direction to define a radiation field hole, each stop dog comprises a base and a main body, and the main body is movably connected with the base; and a driving assembly, which is connected with the stop block assemblies and is used for driving each base to move respectively so as to change the aperture sizes of the radiation field holes, wherein in the process that the driving assembly drives the bases to move respectively, the main bodies can move relative to the corresponding bases so as to change the aperture sizes of the radiation field holes. According to the above technical scheme, the aperture sizes of the radiation field holes can be continuously changed, and the penumbra areas of the radiation field holes can be reduced.

Description

technical field [0001] The present invention relates to the technical field of radiotherapy, in particular to a collimator and a treatment head having the collimator. Background technique [0002] Radiation therapy is an important means of treating tumors. The basic principle of radiation therapy is to shoot rays from an accelerator and then precisely project them to the tumor target area through a collimator to kill cancer cells. Different irradiation fields can be provided by adjusting the collimator. Therefore, the collimator becomes the key technology to control the precise irradiation of rays. [0003] At present, the directional collimators on the market all meet the needs of different irradiation fields by replacing collimators with different aperture sizes. However, in this method, the change of the field is discrete, which cannot provide a continuously changing field, and the collimator needs to be replaced many times, which is time-consuming and labor-intensive. ...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1042A61N5/1045
Inventor 邓家善胡西博
Owner SHANGHAI UNITED IMAGING HEALTHCARE