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Multi-leaf collimator for radiotherapy machine and radiotherapy machine

A multi-leaf collimator, radiation therapy technology, applied in radiation therapy, therapy, X-ray/γ-ray/particle irradiation therapy, etc. Difficulty, the effect of reducing radiation leakage and dose gradients

Pending Publication Date: 2021-06-04
戴建荣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, in view of the problem that the opposite leaves of the existing collimator cannot be completely closed and there are gaps in the middle, the present invention proposes to improve the multi-leaf collimator by designing the ends of the leaves of the multi-leaf collimator so that the opposite leaves can fit each other. Working performance of collimator

Method used

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  • Multi-leaf collimator for radiotherapy machine and radiotherapy machine
  • Multi-leaf collimator for radiotherapy machine and radiotherapy machine
  • Multi-leaf collimator for radiotherapy machine and radiotherapy machine

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Embodiment Construction

[0025] Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described here.

[0026] figure 1 It is a schematic diagram of the structure and function of the multi-leaf collimator of the present invention, which is installed in the treatment head of the radiotherapy machine. like figure 1 As shown, the multi-leaf collimator is arranged below the radiation source, and the collimator includes two leaf groups on side A and side B, which are arranged symmetrically above the isocenter plane of the treatment machine. Under the irradiation of the radiation source, the ray beam passes through the gap between the blade groups and reaches the tum...

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Abstract

A multi-leaf collimator and a radiotherapy machine are disclosed. In one embodiment, the end face of the tail end of each of leaves of the multi-leaf collimator is not a complete plane or curved surface, but is provided with a plurality of protrusions and recesses in a distributed manner. When opposite leaves are closed, the protrusions and the recesses at the tail ends of the two blades are just fitted to each other, and accordingly, the problems of tail end ray leakage, tail end collision and dosage gradual change areas can be completely avoided.

Description

technical field [0001] The invention belongs to the field of radiotherapy equipment, and in particular relates to a multi-leaf collimator blade with end face design, a multi-leaf collimator composed of the blade, and a radiotherapy machine with a corresponding collimator. Background technique [0002] Multileaf Collimator (MLC) is an important part of contemporary radiotherapy machines. It is installed directly under the head of the radiotherapy machine to limit the irradiation range of the ray beam, form irregular fields suitable for various target shapes, and realize conformal radiotherapy; if the multi-leaf collimation is adjusted during the irradiation process By adjusting the position of the device blades, the radiation intensity distribution in the irradiation range can be adjusted to realize intensity-modulated radiotherapy. Compared with traditional radiotherapy, conformal radiotherapy and intensity-modulated radiotherapy can better achieve the purpose of radiothera...

Claims

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Application Information

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IPC IPC(8): A61N5/10
CPCA61N5/1045G21K1/046
Inventor 戴建荣崔伟杰
Owner 戴建荣
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