医用直线加速器感生放射性冷却时间的检测  

Study of Induced Radioactivity and Measure of Cooling Time to the Medical Linear Accelerator

作　　者：屠波 高关心 安文昊 卜羽 朱永丽 夏慧琳 

机构地区：[1]内蒙古自治区人民医院医学工程处,内蒙古呼和浩特010017

出　　处：《中国医疗设备》2011年第12期23-24,16,共3页China Medical Devices

基　　金：内蒙古自治区自然科学基金项目(200607010915)

摘　　要：目的通过对医用直线加速器感生放射性的检测,研究感生放射性强度与冷却时间的关系。方法在加速器X射线能量分别为6MV、10MV和15MV时,利用射线巡检仪和451P巡检仪检测照射剂量为200cGy后0~30min内的感生放射性,对检测数据进行对比统计分析。结果随着加速器X线能量的增加,感生放射性的强度增大,冷却时间也相应延长。结论医用直线加速器感生放射性水平与X线能量和冷却时间有关。Objective Study the relationship between the induced radioactivity and the cooling time of medical linear accelerator by the detection of induced radioactivity.Methods When the X-ray energy of the accelerator were 6MV,10 MV and 15MV,use radiation detection apparatus and 451P inspection to detect the induced radioactivity of 200cGy radiation dose within 0~30 minutes.Analyze and make statistical analysis test data.Results When the X-ray energy of accelerator increases,the induced radioactivity increases, and the cooling time is extended accordingly.Conclusion X-ray energy and cooling time affect the induced radioactivity levels of Medical linear accelerator.

关 键 词：医用直线加速器 感生放射性 冷却时间 

分 类 号：R814.2[医药卫生—影像医学与核医学]