中国医学装备2017，Vol.14Issue(4)：54-57,4.DOI:10.3969/J.ISSN.1672-8270.2017.04.014
三维蓝水箱(BPH)扫描测量系统在螺旋断层加速器质量控制检测中的应用
Application of BPH three-dimensional scanning water tank system in helical tomotherapy accelerator's quality assurancecontrol detection of helical tomotherapy accelerator
魏鹏 1张福泉 2邱杰 2刘峡 2于浪 2杨波 2刘楠 2庞廷田 2李文博 2董婷婷2
作者信息
- 1. 南华大学核科学技术学院 湖南 衡阳 421001
- 2. 中国医学科学院北京协和医学院北京协和医院放射治疗科 北京 100730
- 折叠
摘要
Abstract
Objective: Discuss how to detect dose distribution of helical tomotherapy linear accelerator by using BPH three-dimensional water tank. Methods: Acquired percentage depth dose (PPD), in-plane and cross-plane in 40.0 cm×1.0 cm, 40.0 cm×2.5 cm and 40.0 cm×5.0 cm fields, respectively, of helical tomotherapy accelerator by BPH three-dimensional water tank and OmniPro-Accept 7.5 software. Compared acquired data with gold standard provided by manufacture and analyzed the differences between them. Results: For the PDD of different depth, data collected by BPH 3D water tank system showed good consistency with gold standard no matter in build-up region or other depth and the differences between the results and gold standard were below 2%. For off-axis dose distribution of radiation field, both of the radiation field width and penumbra deviation size under three kind of radiation fields were below 1.0 mm. Conclusion: BPH three-dimensional water tank has many advantages over regular water tank in convenient positioning, fast scan speed, high accuracy, etc. Its results have better consistency with gold standard, and it can accomplish data collection and quality control detection procedure for special beam distribution of helical tomotherapy.关键词
三维蓝水箱/螺旋断层加速器/质量控制/射束分析Key words
3D blue phantom helix/Helical tomotherapy system/Quality control/Beam analysis分类
医药卫生引用本文复制引用
魏鹏,张福泉,邱杰,刘峡,于浪,杨波,刘楠,庞廷田,李文博,董婷婷..三维蓝水箱(BPH)扫描测量系统在螺旋断层加速器质量控制检测中的应用[J].中国医学装备,2017,14(4):54-57,4.
