Direct sub-field optimization device based on position-variable penumbra model and optimization method thereof

A technology for optimizing devices and optimizing methods, applied in the field of medical physics

Pending Publication Date: 2021-06-08
中科超精(南京)科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no direct subfield optimization method and device using a position-based variable penumbra model

Method used

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  • Direct sub-field optimization device based on position-variable penumbra model and optimization method thereof
  • Direct sub-field optimization device based on position-variable penumbra model and optimization method thereof
  • Direct sub-field optimization device based on position-variable penumbra model and optimization method thereof

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Embodiment Construction

[0028] In order to illustrate the technical solution of the present invention more clearly, the technical solution of the present invention is described in further detail below in conjunction with the accompanying drawings:

[0029] Such as figure 1 Said, a direct sub-field optimization device based on position-variable penumbra model, comprising an interconnected user input module, penumbra model establishment module and direct sub-field optimization module;

[0030] In the user input module, the user inputs the blade mechanical parameters of the multi-leaf grating, including the length, width, height, tongue, groove and other dimensions of the blade input by the user, and constructs a blade model;

[0031] The penumbra model module, according to the blade model established by the user input module, uses the Monte Carlo method to establish a penumbra model on different positions of the blade, and traverses each position from the discretized position between the initial positi...

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Abstract

The invention discloses a direct sub-field optimization device based on a position-variable penumbra model and an optimization method thereof, relating to the field of medical physics. Firstly, blade mechanical parameters of a multi-leaf grating are input through a user input module; then, Monte Carlo simulation is performed according to a blade structure input by a user, penumbra parameters at different positions are simulated by using a Monte Carlo method, each position of the blade is traversed to perform simulation to form a curve, and variable penumbra models are established at different positions through a function fitting curve; and finally, in a direct sub-field optimization module, based on the established position-based variable penumbra model, a direct machine parameter optimization method is used to finely adjust the sub-field position, and plan optimization is carried out. According to the invention, the radiotherapy plan can be rapidly and accurately optimized.

Description

technical field [0001] The present invention relates to the field of medical physics, and specifically relates to a model for planning optimization problems. Through user input of blade structure and Monte Carlo simulation, a variable penumbra model at different positions is established, and based on this, the direct machine parameter optimization method is used for fine-tuning Subfield location, to achieve the purpose of fast optimization of the plan. Background technique [0002] With the development of science and technology and the progress of society, the precision requirements for radiation therapy methods are also advancing with the times. However, in the actual optimization calculation, for fast optimization, the penumbra parameters are usually simplified and considered as fixed values, which is convenient for optimization processing. But this is not consistent with the actual exposure situation. According to the different end surfaces of the blade, the penumbra pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20
CPCG06F30/17G06F30/20
Inventor 不公告发明人
Owner 中科超精(南京)科技有限公司
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