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Leaf position monitoring device of multi-leaf collimator, multi-leaf collimator, radiotherapy equipment

A multi-leaf grating and monitoring device technology, applied in radiation therapy, treatment and other directions, can solve the problems of low monitoring accuracy, short service life, and poor anti-interference performance of multi-leaf gratings, and achieve long service life, high monitoring accuracy, and anti-interference. Good interference performance

Active Publication Date: 2019-02-01
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The problem solved by the invention is that the multi-leaf grating in the prior art has low monitoring accuracy, poor anti-interference performance and short service life

Method used

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  • Leaf position monitoring device of multi-leaf collimator, multi-leaf collimator, radiotherapy equipment
  • Leaf position monitoring device of multi-leaf collimator, multi-leaf collimator, radiotherapy equipment
  • Leaf position monitoring device of multi-leaf collimator, multi-leaf collimator, radiotherapy equipment

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Embodiment Construction

[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] figure 1 is a three-dimensional structure diagram of a multi-leaf collimator in a specific embodiment of the present invention, refer to figure 1 , the multileaf collimator of the embodiment of the present invention, including:

[0034] Multiple pairs of oppositely arranged blades 11;

[0035] The driving part 20 connected with the blade 11 is used to drive the movement of the blade 11, and each blade 11 can move independently;

[0036] Blade position monitoring device 30 (in conjunction with reference figure 2 , 3 , 4), comprising a plurality of magnetic elements 31 and a plurality of read magnetic elements 32 opposite to the plurality of magnetic elements. combined reference image 3 and Figure 4 , the plurality of magnet...

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Abstract

The invention relates to a leaf position monitoring device for a multi-leaf collimator, the multi-leaf collimator and radiology treatment equipment. The multi-leaf collimator comprises a plurality of pairs of oppositely arranged leaves, a plurality of magnetic parts and a plurality of magnetism reading elements correspondingly opposite to the plurality of magnetic parts, wherein the plurality of magnetic parts or magnetism reading elements are respectively arranged on each leaf of the multi-leaf collimator; when the magnetism reading elements or the magnetic parts move along with the leaves, the magnetic parts and the magnetism reading elements relatively move and the magnetism reading elements convert sensed variations of magnetic fields of the magnetic parts into position signals of the corresponding leaves to output. The multi-leaf collimator has high monitoring accuracy, high anti-interference performance and a long service life.

Description

technical field [0001] The invention relates to the field of tumor treatment devices, in particular to a leaf position monitoring device of a multi-leaf collimator, a multi-leaf collimator and radiotherapy equipment. Background technique [0002] The medical equipment often used in tumor treatment is radiotherapy equipment, which uses the radiation emitted by radiotherapy equipment to kill tumor cells. Radiation therapy equipment typically includes: a radiation source; a multi-leaf collimator (also known as a multi-leaf collimator) for conformal adjustment of the radiation emitted by the source; a control system for controlling the movement of the multi-leaf collimator; monitoring The system is used to monitor whether the blades in the multi-leaf collimator move to a predetermined position. [0003] A multi-leaf grating generally includes: multiple pairs of leaves placed opposite to each other, and a driving component that drives the movement of the leaves. Among them, eac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/00
Inventor 刘晓龙齐伟蔡楷张剑刘剑
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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