两台直线加速器（Mevatron MX6700和Mevatron KDS）外周剂量的估算

Estimation of peripheral dose from two linacs: Mevatron MX6700 and Mevatron KDS.

作者信息

Sánchez-Reyes A, Ginjaume M, Chakkor H, Melero A, Pons F, Ortega X

机构信息

Servicio de Radioterapia, Hospital Clínico y Provincial de Barcelona, Spain.

出版信息

Med Dosim. 1994 Summer;19(2):83-7. doi: 10.1016/0958-3947(94)90076-0.

DOI:10.1016/0958-3947(94)90076-0

PMID:7916980

Abstract

An empirical calculation method for high-energy beam peripheral dose estimation is described. The peripheral dose has been measured for a Siemens Mevatron MX6700 (6 MV) and a Siemens Mevatron KDS (6 and 18 MV) linear accelerators. The dose distribution is parameterized for each beam energy as a function of depth, distance from the edge of the field, and field size. A simple algorithm has been developed for dose calculation up to 100 cm from the field central axes. Predictions by this algorithm are compared with measurements in an Alderson phantom.

摘要

描述了一种用于高能束流周边剂量估算的经验计算方法。已对西门子Mevatron MX6700（6兆伏）和西门子Mevatron KDS（6和18兆伏）直线加速器的周边剂量进行了测量。针对每个束流能量，将剂量分布参数化为深度、距射野边缘的距离和射野大小的函数。已开发出一种简单算法，用于在距射野中心轴100厘米范围内进行剂量计算。将该算法的预测结果与在Alderson体模中的测量结果进行了比较。