中能重离子剂量深度曲线计算  

Calculating Dose-Depth Curve of Intermediate Energy Heavy lon

作　　者：党秉荣[1] 卫增泉 李文建[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《高能物理与核物理》2002年第4期430-434,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 1 990 5 0 1 3)资助~~

摘　　要：重离子束应用在治疗肿瘤上具有优越的深度剂量分布特点 .发展精确计算剂量的物理模型理论成为其应用的关键 ,为此 ,首先从生物细胞的化学组成成分、放射生物学的特点和物理剂量计算的要求对理论计算的介质进行了选择 .利用现有计算核反应部分截面和修正的总截面经验公式 ,同时考虑了不同影响理论计算的因素 ,提出了中能重离子理论计算深度剂量分布的方法 ,其计算结果与实验数据符合很好 。Tumor treatment with heavy ion is characterized by the depth-dose curve of heavy ions. So,it is a key to develop physics model for calculating dose. In this paper, the media for calculation have been selected from the chemical component of biological cells,characters of radiobiology and demand of physical dose calculation. A method to calculate does-depth distribution has been developed by using the semi-empirical functions of nuclear fragmentation reaction cross section and total nuclear reaction cross section,and also considering other factors which affect the results of calculation. The results of calculation tally with experimental data and show that the theoretic calculation can be used in the tumor treatment and radiobiology effect research.

关 键 词：治疗 肿瘤 剂量深度曲线 等效生物组织材料 计算 中能重离子束 物理模型 

分 类 号：R312[医药卫生—基础医学]