Resolution Monte Carto dosage computing method

A calculation method and dose technology, applied in the field of analytical Monte Carlo dose calculation, can solve the problems of long time, time-consuming, and not fully considering the real situation of charged particle motion, etc., and achieve good calculation speed and good accuracy.
CN101477203AInactive Publication Date: 2009-07-08UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2009-07-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for calculating dose by analyzing Monte-Carlo simulation. The method uses three-dimensional nonuniform correction to replace one-dimensional correction of the prior DSA method based on the prior DSA dose calculation model so as to improve the accuracy of calculation, uses energy fluence of a muon beam incident to the surface of a medium to calculate total kinetic energy of all depths instead of the prior DSA method for calculating the energy fluence of each depth separately to reduce the number of sampling points of each depth calculation so as to reduce the calculation time, and adopts different densities of calculating points according to different calculation areas, such as higher density of a calculating point of an interested area, and lower densities of calculating points of other areas, thereby reducing the calculation time while ensuring the accuracy of the area concerned by a user.
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Description

technical field

[0001] The invention relates to an analytical Monte Carlo dose calculation method in radiation dose measurement and calculation. Background technique

[0002] Dose calculation methods are generally divided into analytical methods and Monte Carlo methods. The analytic method has the advantages of fast speed and high accuracy in uniform areas, but has large errors in non-uniform tissue areas; the Monte Carlo method can maintain high accuracy in all areas, but its application range is limited due to its time-consuming.

[0003] The dose distribution array DSA (Dose Spread Array) obtained by Monte Carlo simulation can characterize the energy absorption ( dose). The DSA model can be used as an independent analytical Monte Carlo dose calculation method.

[0004] When the traditional DSA model calculates the dose of non-uniform medium, it only considers the ratio of the electron density of the active cell and the average value of the electron density of each cell...

Claims

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