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Monte Carlo dose calculating method, Monte Carlo dose calculating device and storage medium

A calculation method, Monte Carlo technology, applied in mechanical/radiation/invasive treatment and other directions, can solve the problem of not having a good standard for errors, inability to judge the quality of the results, uneven errors, etc., to achieve balanced resolution and Accuracy, easy to evaluate the overall accuracy, the effect of improving the accuracy

Active Publication Date: 2019-10-08
BEIJING LINKING MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the error given by the existing Monte Carlo calculation is uneven, resulting in no good standard for the error. In some places, the error is large and in others, the error is small, and it is impossible to judge whether the result is good or bad.

Method used

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  • Monte Carlo dose calculating method, Monte Carlo dose calculating device and storage medium
  • Monte Carlo dose calculating method, Monte Carlo dose calculating device and storage medium
  • Monte Carlo dose calculating method, Monte Carlo dose calculating device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A Monte Carlo dose calculation method, such as figure 1 As shown, it is suitable for execution in a computing device and includes the following steps:

[0040] (1) Preprocessing 101: Input patient images, outline information, field size, irradiation direction, source parameters; where the source parameters include the energy, position, direction and particle type of the source;

[0041] (2) Model processing 102: Reconstruct the patient image, reconstruct the two-dimensional patient image into a three-dimensional model, and make the three-dimensional model uniformly gridded; the grid size is determined by the user, and the smaller the grid, the more accurate the calculation High, the more complex the calculation task;

[0042] (3) Particle input simulation 103: Call the Monte Carlo database, use the Monte Carlo particle transport principle to simulate particle transport, and obtain the dose distribution (according to formula (1)) and standard deviation distribution (according t...

Embodiment 2

[0055] A Monte Carlo dose calculation method, such as figure 2 As shown, it is suitable for execution in a computing device and includes the following steps:

[0056] (1) Preprocessing 210: Input patient images, outline information, field size, irradiation direction, source parameters; where the source parameters include the energy, position, direction, and particle type of the source;

[0057] (2) Model processing 220: Reconstruct the patient image, reconstruct the two-dimensional patient image into a three-dimensional model, and make the three-dimensional model uniformly gridded; the grid size is determined by the user, and the smaller the grid, the more accurate the calculation High, the more complex the calculation task;

[0058] (3) Particle input simulation 230: Call the Monte Carlo database, use the Monte Carlo particle transport principle to simulate particle transport, and obtain the dose distribution and standard deviation distribution; among them, the Monte Carlo database...

Embodiment 3

[0071] A Monte Carlo dose calculation method, such as image 3 As shown, it is suitable for execution in a computing device and includes the following steps:

[0072] (1) Preprocessing 310: input patient images, outline information, field size, irradiation direction, source parameters; where the source parameters include the source's energy, position, direction, and particle type;

[0073] (2) Model processing 320: reconstruct the patient image, reconstruct the two-dimensional patient image into a three-dimensional model, and make the three-dimensional model uniformly gridded;

[0074] (3) Particle input simulation 330: Call the Monte Carlo database, use the Monte Carlo particle transport principle to simulate particle transport, and obtain the dose distribution and standard deviation distribution (according to formula (1) and formula (2)); among them, The Monte Carlo database includes a cross section library and a material library; particles include photons, electrons, protons, heav...

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Abstract

The invention belongs to the technical field of radiation dose calculation, and relates to a Monte Carlo dose calculating method, a Monte Carlo dose calculating device and a storage medium. The methodcomprises the following steps: (1) preprocessing: inputting a patient image, sketching information, a field size, an illumination direction and a source parameter; (2) processing a model: reconstructing the patient image, reconstructing the two-dimensional patient image into a three-dimensional model, and gridding the three-dimensional model; (3) simulating particle input: calling a Monte Carlo database, and simulating particle transport by using the Monte Carlo particle transport principle to obtain a dose distribution and a standard deviation distribution; and (4) outputting the obtained simulation result. The resolution and the precision are balanced, the precision is improved by reducing a certain resolution to make the precision of an interested region uniform; and the calculating speed is large, and the total precision can be easily evaluated.

Description

Technical field [0001] The invention belongs to the technical field of radiation dose calculation, and relates to a Monte Carlo dose calculation method, equipment and storage medium. Background technique [0002] Dose calculation is one of the core contents of the radiotherapy treatment planning system. The rapid and accurate provision of data on the exposure dose in the area of ​​interest is crucial to the formulation of the radiotherapy plan. How to reduce the dose calculation time under the premise of ensuring the accuracy of dose calculation It is the main bottleneck in making radiotherapy plans. [0003] There are two main ways to increase the speed of dose calculation. One is to use different dose calculation methods, and the other is to rely on hardware with stronger computing capabilities. At present, the dose calculation algorithms researched and used in radiotherapy are basically divided into three types. According to the calculation accuracy from high to low, the calcul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H20/40
CPCG16H20/40
Inventor 李贵
Owner BEIJING LINKING MEDICAL TECH CO LTD
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