肿瘤三维治疗计划系统的临床参数测量与验证  

Clinical Parameter Measurement and Verification of 3D-TPS

作　　者：张西志[1] 李军[1] 翟振宇[2] 谭飞[1] 葛和平[1] 仲桂芳[1] 

机构地区：[1]江苏省苏北人民医院,扬州225001 [2]江苏省肿瘤医院,南京210009

出　　处：《医学研究杂志》2008年第5期85-87,共3页Journal of Medical Research

摘　　要：目的对瓦里安Eclipse三维治疗计划系统(3D-TPS)进行临床应用前的系统参数测量与验证,并进行分析讨论。方法用三维水箱和剂量仪对3D-TPS所需的临床参数进行检测,并将监测结果输入到3D-TPS中,验证其符合程度,在射野内用电离室对水箱中感兴趣的四处点剂量进行测量,并对电子束"虚源"位置进行测量,最后再分别验证3D-TPS中计算剂量和电子束"虚源"位置(即有效源皮距)的实测值与计划值之间的符合性。结果3D-TPS的计算曲线与瓦里安Clinac23EX直线加速器上实测参数曲线符合度很好,并且实测剂量与3D-TPS中计算剂量相对误差在-0.55%～1.12%之间,平均误差为0.66%。电子束"虚源"中的有效源皮距实测值与瓦里安公司提供的有效源皮距参考值之间的相对误差在1.27%～1.86%之间,平均误差为1.62%。结论瓦里安Eclipse3D-TPS能很好地满足三维适形及调强放射治疗的临床需要。Objective To measure and verify the system parameters for VARIAN Eclipse 3D - TPS, before clinical application, and analyze them. Methods Measuring the clinical parameter for 3D - TPS by 3D water tank and dose meter system ,and loading the result to 3 D - TPS for verifying the accordance between measured values and planned values , Four points dose were measured in the axis of water tank in order to verify the accuracy of the planned dose , measuring the position of virtual source （ effective SSD or virtual SSD） in electron beam and verified the accuracy of the reference virtual SSD of Varian. Result Measured curve was consistent with planned curve about the parameter of Eclipse 3D -TPS . relative different between measured dose and planned dose were within -0.55% - 1.12% , average difference was 0.66% . Relative difference between the measured virtual SSD and the reference virtual SSD of VARIAN company were within 1.27% - 1.86% ,average difference was 1.62%. Conclusion Eclipse 3D - TPS of VARIAN can be applied to 3D - CRT and IMRT in clinic very well.

关 键 词：肿瘤 三维治疗计划系统 临床参数 测量 验证 

分 类 号：R730.55[医药卫生—肿瘤] R815.6[医药卫生—临床医学]