[1]陈济鸿,张秀春,柏朋刚,等.TQA数据趋势与TomoTherapy输出稳定性的联系[J].中国医学物理学杂志,2020,37(9):1120-1123.[doi:10.3969/j.issn.1005-202X.2020.09.008]
 CHEN Jihong,ZHANG Xiuchun,BAI Penggang,et al.Correlation between TQA data trends and output of helical tomotherapy[J].Chinese Journal of Medical Physics,2020,37(9):1120-1123.[doi:10.3969/j.issn.1005-202X.2020.09.008]
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TQA数据趋势与TomoTherapy输出稳定性的联系()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
37
期数:
2020年第9期
页码:
1120-1123
栏目:
医学人工智能
出版日期:
2020-09-25

文章信息/Info

Title:
Correlation between TQA data trends and output of helical tomotherapy
文章编号:
1005-202X(2020)09-1120-04
作者:
陈济鸿张秀春柏朋刚陆军陈文娟陈开强李奇欣胡彩容林金勇
福建省肿瘤医院/福建医科大学附属肿瘤医院放疗科,福建福州350014
Author(s):
CHEN Jihong ZHANG Xiuchun BAI Penggang LU Jun CHEN Wenjuan CHEN Kaiqiang LI Qixin HU Cairong LIN Jinyong
Department of Radiation Oncology, Fujian Cancer Hospital/Fujian Medical University Cancer Hospital, Fuzhou 350014, China
关键词:
螺旋断层放疗TQA静态输出剂量射线质
Keywords:
helical tomotherapy tomotherapy quality assurance static output beam quality
分类号:
R318;R811.1
DOI:
10.3969/j.issn.1005-202X.2020.09.008
文献标志码:
A
摘要:
目的:探讨TomoTherapy QualityAssurance(TQA)数据趋势与螺旋断层放疗(Helical Tomotherapy,HT)系统输出的 联系。方法:回顾性分析了本院HT系统近3年内TQA各个模块的参数和数据趋势,探讨其与HT系统的静态输出剂量和 输出能量(D20/D10)变化的相关性。结果:楔形阶梯静态模块的z轴偏移参数与HT的静态输出剂量的相关性最强(r=0.883, P<0.01)。基本剂量测定模块的出口检测器平整度值对能量变化最敏感(r=0.902),其次是楔形阶梯静态模块的能量差异 (r=0.897)和楔形阶梯螺旋模块的能量差异(r=0.852),灵敏度分别为2.3×10-4、3.1×10-4和5.7×10-4。结论:TQA有助于用户 追踪HT输出剂量和能量变化,及早进行必要的机器维护或剂量校准。
Abstract:
Objective To discuss the relationship between tomotherapy quality assurance (TQA) data trends and output of helical tomotherapy (HT). Methods The correlations between static output and output energy variation (D20/D10) were determined based on the retrospective analysis on the parameters and data trends of each module of TQA of HT in recent 3 years. Results The offset parameter of z axis in step-wedge static module had the best correlation with the static output of HT (r=0.883, P<0.01). The exit detector flatness in basic dosimetry module was the most sensitive to energy changes (r=0.902), followed by energy differences in step-wedge static module (r=0.897) and energy differences in step-wedge helical module (r =0.852), and their sensitivities were 2.3×10-4, 3.1×10-4 and 5.7×10-4, respectively. Conclusion TQA can help user to monitor the changes in the output and energy of HT, thereby carrying out necessary maintenance and dosimetric validation earlier.

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备注/Memo

备注/Memo:
【收稿日期】2020-04-15 【基金项目】福建省卫生健康科技项目(2017-ZQN-15, 2018-ZQN-19, 2017-CX-8) 【作者简介】陈济鸿,博士,工程师,主要研究方向为肿瘤放射治疗,E-mail: whuhandaxue@163.com 【通信作者】张秀春,E-mail: tongzhangxiuchun@126.com
更新日期/Last Update: 2020-09-25