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[Monte Carlo simulation and validation of the multi-leaf collimator of Varian 23EX accelerator]
Zhenhui Dai1, Xuetao Wang, Lin Zhu
1Department of Radiation Therapy, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, China.
Objective:
To simulate the multi-leaf collimator of Varian linear accelerator using Monte Carlo method.
Methods:
The multi-leaf collimator model was established using the DYNVMLC module of BEAMnrc and validated by comparison of Monte Carlo simulation and actual measurement results.
Results:
The simulation results were well consistent with the actual measurement results with a bias of less than 3%.
Conclusion:
The multi-leaf collimator of Varian linear accelerator can be successfully modeled using Monte Carlo method for analysis of the impact of the geometric properties of the multi-leaf collimator on the dose distribution.
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