[1]方川,葛云,黄晓林,等. 一种医用直线加速器机械参数测量分析系统[J].中国医学物理学杂志,2019,36(5):585-589.[doi:DOI:10.3969/j.issn.1005-202X.2019.05.018]
　FANG Chuan,GE Yun,HUANG Xiaolin,et al. Mechanical parameter measurement and analysis system for a medical linear accelerator[J].Chinese Journal of Medical Physics,2019,36(5):585-589.[doi:DOI:10.3969/j.issn.1005-202X.2019.05.018]
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 一种医用直线加速器机械参数测量分析系统()
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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:
585-589
栏目:
医学信号处理与医学仪器
出版日期:
2019-05-25

文章信息/Info

Title:
 Mechanical parameter measurement and analysis system for a medical linear accelerator
文章编号:
1005-202X（2019）05-0585-05
作者:
 方川1; 葛云1; 黄晓林1; 陈颖1; 金建华2; 蔡晶2; 储开岳2
 1.南京大学电子科学与工程学院， 江苏 南京 210023； 2.南通市肿瘤医院放疗科， 江苏 南通 226361
Author(s):
 FANG Chuan1;  GE Yun1;  HUANG Xiaolin1;  CHEN Ying1;  JIN Jianhua2;  CAI Jing2;  CHU Kaiyue2
 1. School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China; 2. Department of Radiotherapy, Nantong Tumor Hospital, Nantong 226361, China
关键词:
 ; 医用直线加速器; 机械参数; 双目光学测量套件; 分析报告
Keywords:
 ; Keywords: medical linear accelerator;  mechanical parameter;  binocular optical measurement kit;  analysis report
分类号:
R318
DOI:
DOI:10.3969/j.issn.1005-202X.2019.05.018
文献标志码:
A
摘要:
目的：设计并实现一种医用直线加速器的机械参数测量系统，可对医用直线加速器等中心等各项机械参数进行测量并定量分析。方法：系统硬件采用双目光学测量套件，在加速器各部件上贴上定位小球，双目相机以20 Hz频率输出定位小球的空间坐标。软件上位机根据定位小球坐标实时更新加速器三维模型和各部件运动参数的拟合，实现对医用直线加速器的运动跟踪功能。完成测量后，软件可以输出测量分析报告，报告内容包括加速器各部件机械运动参数和反映性能的特征量，测量精度达0.5 mm。结果：实现本系统后，在两家医院对两台不同使用时长医用直线加速器分别进行多次测量和分析，得到等中心误差、机架机械运动参数和统计量、治疗床机械运动参数和统计量、机架和治疗床重复运动误差等。结论：本系统可帮助技术人员和物理师进行加速器维护工作，为医用直线加速器的日常检测和质量控制提供指导。
Abstract:
 Abstract: Objective To design and implement a mechanical parameter measurement system that can measure and quantitatively analyze the isocenter and other mechanical parameters of medical linear accelerators. Methods The hardware of the system adopted binocular optical measurement kit. A positioning ball was attached to the components of the accelerator. The binocular camera output the spatial coordinates of the positioning ball at a frequency of 20 Hz. According to the coordinates, the fitting of three-dimensional model of the accelerator and the movement parameters of each component was updated with software, thereby realizing the motion tracking on medical linear accelerators. When the measurement was completed, the software output the measurement analysis report which included the mechanical motion parameters of various components of the accelerator and the characteristic variables which could reflect the performance. The measurement accuracy was up to 0.5 mm. Results After the system was established, multi-measurement and analysis were conducted on two medical linear accelerators that had been working for different hours in two hospitals. The accelerators were separately measured and analyzed to obtain the isocenter errors, mechanical motion parameters of gantry and treatment couch and their statistics, repeatability errors of gantry and treatment couch, etc. Conclusion The proposed system can effectively assist technicians and physicists in the maintenance of accelerators and provide guidance for daily inspection and quality control of medical linear accelerators.

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备注/Memo

备注/Memo:
【收稿日期】2018-11-10
【基金项目】江苏省重点研发计划-社会发展-临床前沿技术（SBE2016733；BE2017679），南京市校企合作后补助项目（201722002）
【作者简介】方川，硕士研究生，主要研究方向：医学软件开发、图像处理，E-mail: mf1623010@smail.nju.edu.cn
【通信作者】葛云，教授，研究方向：医学影像处理及精准放疗，E-mail: geyun@nju.edu.cn
更新日期/Last Update: 2019-05-23