[1]蒋大振,王骁踊,张俊,等. 运用PTW QUICKCHECK webline晨检仪分析医用加速器输出稳定性[J].中国医学物理学杂志,2019,36(5):540-545.[doi:DOI:10.3969/j.issn.1005-202X.2019.05.009]
　JIANG Dazhen,WANG Xiaoyong,ZHANG Jun,et al. Using PTW QUICKCHECK webline to monitor the output stability of linear accelerator[J].Chinese Journal of Medical Physics,2019,36(5):540-545.[doi:DOI:10.3969/j.issn.1005-202X.2019.05.009]
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 运用PTW QUICKCHECK webline晨检仪分析医用加速器输出稳定性()
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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5期
页码:
540-545
栏目:
医学放射物理
出版日期:
2019-05-25

文章信息/Info

Title:
 Using PTW QUICKCHECK webline to monitor the output stability of linear accelerator
文章编号:
1005-202X（2019）05-0540-06
作者:
 蒋大振; 王骁踊; 张俊; 谢丛华; 王大奖; 陈诚; 陈飞; 江舟; 肖智志; 张庆玲; 刘海洋; 王中豪; 王衎; 周明剑; 刘晖
 武汉大学中南医院放化疗科/湖北省肿瘤生物学行为重点实验室和湖北省肿瘤医学临床研究中心， 湖北 武汉 430071
Author(s):
 JIANG Dazhen;  WANG Xiaoyong;  ZHANG Jun;  XIE Conghua;  WANG Dajiang;  CHEN Cheng;  CHEN Fei;  JIANG Zhou;  XIAO Zhizhi;  ZHANG Qingling;  LIU Haiyang;  WANG Zhonghao;  WANG Kan;  ZHOU Mingjian;  LIU Hui
 Department of Radiation and Medical Oncology, Hubei Key Laboratory of Tumor Biological Behaviors, Hubei Cancer Clinical Study Center, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
关键词:
 ; PTW QUICKCHECK webiline晨检仪; 直线加速器; 稳定性; 质量保证
Keywords:
Keywords: PTW QUICKCHECK webline;  linear accelerator;  stability;  quality assurance
分类号:
R815.6；R318
DOI:
DOI:10.3969/j.issn.1005-202X.2019.05.009
文献标志码:
A
摘要:
 【摘要】目的：通过PTW QUICKCHECK webline晨检仪分析加速器输出稳定性。方法：收集电离室更换前后加速器输出绝对剂量，回顾性分析PTW QUICKCHECK webline晨检仪对加速器的检测情况，并分析不同能量输出剂量的稳定性。结果：6、10 MV X射线以及6、9、12 MeV电子线中心轴输出剂量误差均在3%以内。方差分析显示此加速器不同能量输出稳定性无显著性差异（P>0.05)。PTW QUICKCHECK webline晨检仪检测发现每周输出剂量不断偏高，经进一步检测确认为电离室故障。更换电离室后输出剂量在标准值附近极小的范围内波动，保持较高的稳定性能。PTW QUICKCHECK webline晨检仪可以提前发现加速器存在的隐患，帮助物理师及时处理隐患。结论：使用PTW QUICKCHECK webline晨检仪对直线加速器输出剂量进行检测有利于确保直线加速器的准确性与稳定性，可有效地降低加速器系统误差，避免出现严重失误。
Abstract:
 Abstract: Objective To analyze the output stability of a medical linear accelerator by PTW QUICKCHECK webline. Methods The absolute doses of the medical linear accelerator before and after the replacement of ionization chamber were collected in this study. The monitoring results of accelerator by PTW QUICKCHECK webline were retrospectively analyzed, and the output stabilities of different energies from the same accelerator were analyzed. Results The central-axis dose for 6, 10 MV X-ray and 6, 9, 12 MeV electron beams were within ±3%. Analysis of variance showed that there was no significant difference in the output stability of different energies from the same accelerator (P>0.05). The monitoring of PTW QUICKCHECK webline revealed that the output dose kept increasing, and the malfunction of ionization chamber was confirmed by the subsequent detection. After the replacement of ionization chamber, the output dose was close to the standard value and only fluctuated in a small range, having a high stability performance. Using PTW QUICKCHECK webline could detect the hidden danger of the accelerator in advance and help the physicist detect and eliminate the hidden danger in time. Conclusion The output dose measurement before daily treatment by PTW QUICKCHECK webline can ensure the accuracy and stability of the linear accelerator, effectively reduce the system error and avoid serious mistakes.

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备注/Memo

备注/Memo:
 【收稿日期】2018-12-16
【作者简介】蒋大振，硕士研究生，研究方向：放射物理，E-mai: dzjiang-
@yeah.net
【通信作者】刘晖，副主任物理师，研究方向：肿瘤放疗，E-mail: liuhui-
69_wh@hotmail.com
更新日期/Last Update: 2019-05-23