Calculation Method of Photon and Electron Dose Under Magnetic Field Based on GPU Monte Carlo Algorithm

A calculation method and electronic technology, applied in the field of medical radiation therapy, which can solve the problems of increased computing time, inability to obtain fast and accurate dose results, and increased steps.

Active Publication Date: 2019-04-16
安徽慧软科技有限公司
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Problems solved by technology

The result of this is: if some of the 32 threads need to update the same global memory, there will be fierce thread competition, the steps required for the "compare-exchange" algorithm will increase sharply, and the operation time will increase significantly
Therefore, combining a GPU with a Monte Carlo program, without solving this problem, even a special-purpose Monte Carlo program simulation, cannot achieve fast and accurate dosing results

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  • Calculation Method of Photon and Electron Dose Under Magnetic Field Based on GPU Monte Carlo Algorithm
  • Calculation Method of Photon and Electron Dose Under Magnetic Field Based on GPU Monte Carlo Algorithm
  • Calculation Method of Photon and Electron Dose Under Magnetic Field Based on GPU Monte Carlo Algorithm

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Embodiment Construction

[0044] In this embodiment, a method for calculating the dose of photons and electrons under a magnetic field based on the GPU Monte Carlo algorithm is applied in the field of MRIgRT, that is, in the MRI magnetic field environment, the radioactive source passes through complex interactions with the human body model. Energy is deposited in the experimental environment in various organs of the human body model, specifically, as figure 1 As shown, proceed as follows:

[0045] Step 1: Collect data

[0046] Step 1.1. Obtain and process the radiation source data of the radiation therapy accelerator to obtain radiation source information where E represents the source energy, represents the source location, Indicates the source emission direction;

[0047] Step 1.2, obtain the image data of the human anatomy structure of the CT machine or the nuclear magnetic resonance instrument MRI or the positron emission type computed tomography imaging machine PET and reconstruct the human ...

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Abstract

The invention discloses a method for calculating photon and electron doses under a magnetic field based on a GPU Monte Carlo algorithm, comprising: 1 collecting data; 2 determining the optimal number of GPU threads and transport task batches; 3 using the Monte Carlo algorithm to calculate The photon and electron radiation dose of each batch under the action of a magnetic field; 4 based on GPU fast atomic addition statistical dose results. The invention can quickly and accurately calculate the radiation dose of photons and electrons under the action of a magnetic field, and can be used for dose calculation in the treatment planning system of magnetic resonance real-time guided radiotherapy MRIgRT, thereby improving the accuracy and accuracy of dose calculation in the MRIgRT treatment planning system Speed ​​and improve the effect of radiation therapy.

Description

technical field [0001] The invention belongs to the application of computer information technology in the field of nuclear technology, in particular to the field of medical radiotherapy technology, specifically a method for calculating the dose of photons and electrons under a magnetic field based on GPU Monte Carlo algorithm, which can be used for real-time guidance of magnetic resonance Dose calculation in a treatment planning system for radiation therapy MRIgRT. Background technique [0002] Cancer is one of the main causes of human death. About 70% of cancer patients need radiation therapy during the treatment of cancer, and about 40% of cancers can be cured with radiation therapy. The radiation therapy regimens that actual patients receive are designed through the treatment planning system. In the treatment planning system, the doctor will draw the outline of the target organ and the organ at risk according to the patient's CT, and set the prescribed dose of the target...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1031A61N5/1071A61N2005/1034A61N2005/1052A61N2005/1055A61N2005/1092
Inventor 徐榭阳露刘紅冬刘天宇林卉裴曦
Owner 安徽慧软科技有限公司
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