Method for processing radiotherapy precision data on basis of probability safety analysis

A technology of probabilistic safety analysis and data processing, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the probabilistic safety evaluation system cannot directly apply the analysis of the accuracy of radiation therapy, and achieve the goal of broadening the scope of application Effect

Inactive Publication Date: 2013-04-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

The probabilistic safety evaluation system commonly used in nuclear power plants cannot be directly applied to

Method used

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  • Method for processing radiotherapy precision data on basis of probability safety analysis
  • Method for processing radiotherapy precision data on basis of probability safety analysis
  • Method for processing radiotherapy precision data on basis of probability safety analysis

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Embodiment Construction

[0019] Such as figure 1 As shown, a radiotherapy accuracy data analysis method based on probabilistic safety analysis, its implementation steps are as follows:

[0020] (1) Use the existing radiotherapy experience data or simulated experimental data to collect initial data as the source data in the probabilistic safety analysis method, including: basic event probability and probability error data, data related to human errors, total related data;

[0021] (2) Taking the failure of radiotherapy accuracy as the top event, modeling the radiotherapy process as a fault tree, and dividing all factors that have a key impact on radiotherapy into dose errors, setup errors, target area delineation errors, and output errors4 Large categories, expand each category separately, analyze all factors that directly lead to its occurrence, until the initial event, so that all events can be linked into a fault tree;

[0022] (3) Input the probability data of each initial event in the fault tree...

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Abstract

The invention relates to a method for processing radiotherapy precision data on the basis of probability safety analysis. The method is used for implementing a probability safety analysis process in a precision radiotherapy system. The method is characterized in that causal connection among various parameters with key influence to the precision of precision radiotherapy is analyzed by a process for analyzing the data in the probability safety analysis, the probability of precision failure is analyzed by modeling for processing the data, influence of various systems and human factors to the precision is evaluated, key problems are found out, key deviation is corrected, and accordingly the quality of precision radiotherapy is improved.

Description

technical field [0001] The present invention relates to the technical field of probabilistic safety analysis, in particular to a radiotherapy accuracy data analysis method based on probabilistic safety analysis, which applies the data analysis method in probabilistic safety analysis to the analysis of complex systems in precise radiotherapy, and utilizes the The modeling method analyzes the accident sequence of accuracy failure, and the generated data can be applied to the radiotherapy planning system to analyze and evaluate the accuracy of radiotherapy. Background technique [0002] With the development of medical physics and computer science, the accuracy of radiation therapy is getting higher and higher, but there are always some factors that restrict the accuracy of dose or target area conformity, such as target area positioning, treatment positioning, different intensity modulation Techniques and different operators, etc., this creates uncertainty in radiation therapy, ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李文艺汪进曹瑞芬吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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