4πγ井型NaI晶体测量装置开展医用核素^99Tcm活度测量的国际比对  

The International Comparison on Activity Measurements of Medical Radionuclide 99Tcm with a 4πγ Well-type Nal Crystal Transfer Instrument

作　　者：张明[1] 梁珺成[1] 刘皓然[1,2] 杨元第[1] 陈靖[1] 

机构地区：[1]中国计量科学研究院,北京100013 [2]中国原子能科学研究院,北京102413

出　　处：《计量学报》2013年第4期393-396,共4页Acta Metrologica Sinica

摘　　要：^99Tcm为目前在核医学领域应用最为广泛的短寿命放射性核素，其活度值的准确性至关重要，为此国际计量局组织了^99Tcm核素活度国际关键比对。2012年3月，中国计量科学研究院电离辐射所采用4πγ井型NaI晶体国际参考系统传递仪器（SIRTI）完成了医用核素^99Tcm的比对实验。稳定性测试结果表明SIRTI仪器工作状态满足比对要求，比对核素^99Tcm的活度当量测量结果在12．580kBq左右。99Tcm is a short-lived radionuclide and has been widely used in most nuclear medicine. The accuracy of its activity value is very important for applications. Therefore, BIPM organized the international key comparison on the activity of 99Tcm. In March of 2012,the activity measurement of 99Tcm was carried out at the National Institute of Metrology （NIM） in China, with a well-type NaI crystal transfer instrument of the International Reference System （SIRTI） which was set up by BIPM. The stability and reproducibility results show that the status of SIRTI met the requirements of comparison, and the measured equivalent activity of 99Tcm is about 12. 580 kBq.

关 键 词：计量学 放射性活度 4πγ井型NaI晶体 国际比对 

分 类 号：TB98[一般工业技术—计量学]