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体素模型与Monte Carlo模拟计算方法相结合已开始应用于辐射防护的研究中。然而,通常的模拟计算需要很长的时间,这限制了体素模型的广泛应用。该文对模拟计算中体素模型的描述进行研究,实现了把三维体素合并算法用在MCNP(Monte Carlo N-particle)程序描述体素模型的方法。结果表明,使用该方法描述体素模型,粒子输运过程要比传统的方法快32%,但是对粒子在组织器官中沉积能量的纪录需要更多时间。关键词:辐射;MCNP(Monte Carlo N-particle);体素;人体模型;剂量
The combination of voxel models with Monte Carlo simulation has begun to be used in the study of radiation protection. However, the usual simulation calculations take a long time, which limits the wide application of voxel models. In this paper, the description of voxel model in simulation is studied, and the method of voxel model in MCNP (Monte Carlo N-particle) is implemented. The results show that using this method to describe the voxel model, particle transport is 32% faster than the traditional method but requires more time for the particle to record energy in tissues and organs. Key words: Radiation; MCNP (Monte Carlo N-particle); Voxel; Human model; Dose