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- W2367029257 abstract "Objective Monte Carlo method has been widely applied in clinical dose calculation of radiation therapy. So a dose calculation method was developed in this paper which could accurately describe the radiation field with arbitrary shape and the intensity to verify the accuracy of radiation therapy planning based on the MCNP source subroutine. Methods Firstly, we determined the location of the source particles according to the accelerator position and the head position of the isocenter position. Then, a plane was supposed paralleled to the isocenter plane between the accelerator head and phantom, using a two-dimensional intensity matrix to represent the field. The plane was divided into grids corresponding to the matrix, randomly sampling the point in the plane to obtain the source particle's position. We drew the straight line from the accelerator point source to the particle position to obtain source particle direction. The spectra was sampled to obtain the source particle energy. Thus the particle's energy, direction and position in the plane could be identified. Then the dose distribution in the patient geometry could be simulated based on above sources. Results Tested by a clinical treatment plan of cervical cancer simulation dose distribution and compared with MCFSPB, the average error in the target area is 1.12%, γ analysis is 94.55%. Conclusion This method can fully meet the clinical requirements and be used as the treatment planning tool for validation." @default.
- W2367029257 created "2016-06-24" @default.
- W2367029257 creator A5062660106 @default.
- W2367029257 date "2015-01-01" @default.
- W2367029257 modified "2023-09-23" @default.
- W2367029257 title "A Dose Verification Method Based on MCNP SOURCE Subroutine for Radiotherapy" @default.
- W2367029257 hasPublicationYear "2015" @default.
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