【摘要】 本文报告2004~2007年用两种检测方法(指型电离室和阱式电离室检测方法)对江苏省21台近距离治疗机192Ir源有效活度进行了检测。检测结果表明,21台设备中只有12个192Ir源有效活度相对标称值相对偏差在±3%以内。近距离治疗机有效活度质控检测工作的重要性和紧迫性,应引起卫生行政部门的重视。更多还原

【Abstract】 This paper describes the detection methods of 192 Ir source effective activity of brachytherapy machines and the detection results of 21 192Ir sources effective activity in Jiangsu Province from 2004 to 2007. The difference between two methods is 0.7%. One is finger-type ionization chamber, while the other is well-type ionization chamber. Only 12 brachytherapy machines among the 21 machines we detected,and the result difference of 192Ir source effective activity is within ±3%. The importance and urgency of brachytherapy machine 192Ir source effective activity calibration should arouse the attention of health administrative departments.更多还原