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Neutron dose rapid determining method

A determination method and technology of neutron dose, which is applied in the field of fast determination of neutron dose, can solve the problems of low accuracy rate and long time of three-dimensional irradiation dose, so as to improve the operation speed, calculation speed and operation speed Effect

Inactive Publication Date: 2017-10-24
四川瑶天纳米科技有限责任公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of long time and low accuracy in determining the three-dimensional radiation dose of boron neutron capture in the prior art, and to provide a fast determination method of neutron dose to solve the above problems

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Embodiment

[0037] Rapid neutron dose determination methods, such as figure 1 shown, including:

[0038] (1) Input human CT data, body surface contour, tumor area and endangered organ area on the CPU platform.

[0039] (2) Discretize human body CT data into computing voxels on the CPU platform. In the irradiated area, the size of the calculation voxel is dX×dY×dZ cm 3 , can take dX=dY=dZ=0.25. In the non-illuminated area, calculate the voxel size k 1 dX×k 2 dY×k 3 dZ cm 3 , you can take k 1 =k 2 =k 3 =k=2. In this way, the calculation accuracy in the high radiation dose area can be guaranteed, and the corresponding calculation speed can also be guaranteed.

[0040] After discretization, the following matrix is ​​obtained: CT value H[NX*NY*NZ], organ marker matrix M[NX*NY*NZ], length of voxel in X direction PX[NX], length of voxel in Y direction PY[ NY], the length of the voxel in the Z direction PZ[NZ], IX[2*NX], IY[2*NY] and IZ[2*NZ].

[0041] Among them, NX, NY, and NZ are ...

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Abstract

The invention discloses a neutron dose rapid determining method, which solves the problems of long time and low accuracy rate of determining three-dimensional irradiation dose of boron neutron capture in the prior art. The neutron dose rapid determining method comprises the steps of: 1) forming phantom data of neutron irradiation on a CPU platform, carrying out discretization on the phantom data, forming calculation voxels, and determining a substance mark number of each calculation voxel in a three-dimensional space; 2) selecting a GPU platform used for determining a dose of a neutron beam, and transmitting calculation data to the GPU platform by means of the CPU platform; 3) and parallelly calculating doses of units of a three-dimensional irradiation dose matrix D by using a Monte Carlo program on the GPU platform, and returning data of the irradiation dose matrix D to the CPU platform by means of the GPU platform. The neutron dose rapid determining method realizes the effect of modifying an original method of operating in the CPU into the method of operating in the GPU, greatly accelerates the operation speed, and effectively ensures the precision of calculation.

Description

technical field [0001] The invention relates to a method for determining neutron dose, in particular to a method for rapidly determining neutron dose. Background technique [0002] In order to achieve boron neutron capture therapy, in addition to the necessary thermal neutron irradiation equipment, rapid and accurate assessment of the dose distribution in the human body after thermal neutron irradiation is also a key link. So far, the method of boron neutron capture to treat tumors has a history of more than 70 years. Although the method is advanced and effective, it has not achieved a breakthrough in clinical application. Difficulty in the source; Difficulty in developing boron-containing drugs enriched in the human body; Difficulty in accurately and quickly determining the dose of thermal neutron radiation. In the clinical trials of boron neutron capture therapy for some tumors, normal tissue necrosis has occurred due to excessive irradiation, and tumor recurrence has als...

Claims

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Application Information

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IPC IPC(8): G01T3/00
CPCG01T3/00
Inventor 王慧芳周烨
Owner 四川瑶天纳米科技有限责任公司
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