[1]王涛,程秀艳,郭跃信. ArcCheck的剂量学特性测量及其对VMAT计划的验证[J].中国医学物理学杂志,2019,36(3):277-281.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.006]
　WANG Tao,CHENG Xiuyan,GUO Yuexin. Measurement of the dosimetric characteristics of ArcCheck and its application in VMAT plan verification[J].Chinese Journal of Medical Physics,2019,36(3):277-281.[doi:DOI:10.3969/j.issn.1005-202X.2019.03.006]
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 ArcCheck的剂量学特性测量及其对VMAT计划的验证()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
36卷
期数:
2019年第3期
页码:
277-281
栏目:
医学放射物理
出版日期:
2019-03-25

文章信息/Info

Title:
 Measurement of the dosimetric characteristics of ArcCheck and its application in VMAT plan verification
文章编号:
1005-202X（2019）03-0277-05
作者:
 王涛1; 程秀艳2; 郭跃信1
 1.郑州大学第一附属医院放射治疗部， 河南 郑州 450000； 2.河南省肿瘤医院放疗科， 河南 郑州 450000
Author(s):
 WANG Tao1;  CHENG Xiuyan2;  GUO Yuexin1
 1. Department of Radiotherapy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China; 2. Department of Radiotherapy, He’nan Cancer Hospital, Zhengzhou 450000, China
关键词:
 ; 剂量学特性; ArcCheck; 线性; 剂量率响应; 容积调强放射治疗
Keywords:
 ; Keywords: dosimetric characteristic;  ArcCheck;  linearity;  dose rate response;  volumetric modulated arc therapy
分类号:
R811.1
DOI:
DOI:10.3969/j.issn.1005-202X.2019.03.006
文献标志码:
A
摘要:
 目的：对ArcCheck的剂量学特性进行测量，分析ArcCheck的剂量学特性曲线，探讨ArcCheck能否满足临床使用的要求。方法：分别测量ArcCheck的重复性、能量响应、角度响应和剂量率响应。结果：归一后ArcCheck的重复性为0.990 6±0.009 0。能量响应分析表明经过直线回归后的常数项为-0.257 5，标准差为0.121 5；回归系数为1.464 3，标准差为5.368 7E-4。角度响应的曲线符合探测器表面的模体材料厚度变化。剂量率的变化对探头的测量结果影响很小。结论：ArcCheck模体探测器的剂量学特性满足临床使用的要求，可以对容积弧形调强计划进行验证。
Abstract:
 Abstract: Objective To measure the dosimetric characteristics of ArcCheck and analyze the dosimetric characteristic curves of the detector for determining whether ArcCheck can meet the clinical requirements. Methods The reproducibility, energy response, angle response and dose-rate response of ArcCheck were measured. Results The normalized reproducibility of ArcCheck was 0.990 6±0.009 0. The analysis of energy response showed that after linear regression, the constant term was -0.257 5, with a standard deviation of 0.121 5, while the regression coefficient was 1.464 31, with a standard deviation of 5.368 72E-4. The curve of angle response accorded with the variations in the thickness of the superficial materials. Moreover, the changes in dose rate had trivial effects on the measurement. Conclusion The dosimetric characteristics of ArcCheck meet the clinical requirements, and ArcCheck can be applied in the verification of VMAT plan.

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备注/Memo

备注/Memo:
 【收稿日期】2018-09-20
【作者简介】王涛，硕士，主管技师，研究方向：辐射剂量学，E-mail: ttwangtt@sina.cn
【通信作者】郭跃信，硕士，主任技师，研究方向：放射物理，E-mail:13838081115@126.com
更新日期/Last Update: 2019-03-25