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A Monte Carlo dose calculation method, device and storage medium

A calculation method, Monte Carlo technology, applied in the direction of mechanical/radiation/invasive treatment, etc., can solve the problems that there is no good standard for errors, it is impossible to judge whether the results are good or bad, and the errors are uneven, so as to achieve uniform accuracy and convenience Evaluate the overall accuracy and the effect of improving accuracy

Active Publication Date: 2022-05-10
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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  • A Monte Carlo dose calculation method, device and storage medium
  • A Monte Carlo dose calculation method, device and storage medium
  • A Monte Carlo dose calculation method, device and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

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

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

[0041] (2) Model processing 102: Reconstruct the patient image, reconstruct the two-dimensional patient image into a three-dimensional model, and uniformly grid the three-dimensional model; the grid size is determined according to user-defined, the smaller the grid, the higher the calculation accuracy The higher the calculation task is, the more complex it is;

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

Embodiment 2

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

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

[0057] (2) Model processing 220: reconstruct the patient image, reconstruct the two-dimensional patient image into a three-dimensional model, and uniformly grid the three-dimensional model; the grid size is determined according to user-defined, the smaller the grid, the higher the calculation accuracy The higher the calculation task is, the more complex it is;

[0058] (3) Particle input simulation 230: call the Monte Carlo database, use the Monte Carlo particle transport principle to carry out particle transport simulation, and obtain the dose distribution and standard deviation distribution; wherein, the Mo...

Embodiment 3

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

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

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

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

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Abstract

The invention belongs to the technical field of radiation dose calculation, and relates to a Monte Carlo dose calculation method, equipment and a storage medium. The present invention includes the following steps: (1) preprocessing: input patient image, outline information, field size, irradiation direction, and source parameters; (2) model processing: reconstruct patient image, and reconstruct the two-dimensional patient image into 3D model, and mesh the 3D model; (3) Particle input simulation: call the Monte Carlo database, use the Monte Carlo particle transport principle to perform particle transport simulation, and obtain the dose distribution and standard deviation distribution; (4) Output simulation results. The invention has the following beneficial effects: the resolution and precision are balanced, and the precision is improved by reducing a certain resolution, so that the precision of the concerned area is uniform; the calculation speed is fast, and the overall precision is conveniently 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 a storage medium. Background technique [0002] Dose calculation is one of the core contents of the radiotherapy treatment planning system. Quickly and accurately providing data on the radiation dose in the region of interest is crucial to the formulation of radiotherapy plans. How to reduce the dose calculation time under the premise of ensuring the accuracy of dose calculation is a major bottleneck in radiotherapy planning. [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 use hardware with stronger computing power. 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 calculation time from...

Claims

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Application Information

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