论文部分内容阅读
用通用蒙特卡罗程序MCNP模拟了粒子在人脑中的输运过程。吸收剂量率主要来自以下四个反应:~(10)B(n,α)~7Li,~(14)N(n,p)~(14)C,~1H(n,γ)~2D,快中子弹性散射反应。对肿瘤区的贡献主要来自硼中子吸收反应。结果表明,超热中子比热中子适合于深肿瘤的治疗,而热中子对浅肿瘤的治疗有优越性,比如皮肤癌。同确定论方法的结果相比,蒙特卡罗方法不失为一种模拟中子俘获治疗的好工具。
The general Monte Carlo program MCNP was used to simulate the transport of particles in the human brain. The absorbed dose rate mainly comes from the following four reactions: ~ (10) B (n, α) ~ 7Li ~ 14N (n, p) ~ (14) C ~ 1H Neutron elastic scattering reaction. The contribution to the tumor area mainly comes from the boron neutron absorption reaction. The results show that the superheated neutrons are more suitable for the treatment of deep tumors than the thermal neutrons, while the thermal neutrons are superior to the treatment of superficial tumors, such as skin cancer. Compared with the deterministic method, Monte Carlo method is a good tool to simulate neutron capture therapy.