Verification of Dose Calculations with the Double Gaussianlogistic Model for Carbon-ion Spot Scanning Beam Delivery to Spherical Targets in Water

作     者：Zhang Hui Dai Tianyuan Liu Xinguo Chen Weiqiang Ma Yuanyuan He Pengbo Shen Guosheng Yuan Ping Dai Zhongying Li Qiang 

作者机构：不详 

出 版 物：《IMP & HIRFL Annual Report》 (中国科学院近代物理研究所和兰州重离子研究装置年报（英文版）)

年 卷 期：2018年第1期

页      面：154-155页

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：beam Gaussian sizes 

摘      要：The accuracy of dose calculation is of vital importance in treatment planning system(TPS).Taking the low dose envelope of carbon-ion pencil beam into consideration,a novel model,called as double Gaussian-logistic model,has been proposed to depict the lateral dose distribution of carbon-ion pencil beam in our previous work,where the accuracy of the model was preliminarily verified using both single-spot beam and superposed fields in various cases for carbon-ion pencil beam[1].In this work,virtual spherical target volumes of different sizes in water tank were adopted to testify the superiority of the double Gaussian-logistic modelto the single,double and triple Gaussian models for carbon ion beam *** on Monte Carlo(MC)simulation and dose optimization-oriented iterative least square method,comparisons of the dose distributions between the MC simulations and calculations using the single。