液闪TDCR方法测量18F核素活度

刘皓然; 柳加成; 梁珺成; 杨元第; 袁大庆

doi:10.3969/j.issn.1000-1158.2011.z1.07

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计量学报 ›› 2011, Vol. 32 ›› Issue (z1) : 26-29. DOI: 10.3969/j.issn.1000-1158.2011.z1.07

液闪TDCR方法测量18F核素活度

刘皓然¹,柳加成²,梁珺成²,杨元第²,袁大庆¹

作者信息 +

Activity Measurement of 18F with TDCR-LS Methods

LIU Hao-ran¹,LIU Jia-cheng²,LIANG Jun-cheng²,YANG Yuan-di²,YUAN Da-qing¹

Author information +

文章历史 +

摘要

18F是重要的医用短半衰期核素,广泛应用于核医学正电子发射断层成像（PET）。18F衰变到18O基态（包括96.86%的β⁺发射和3.14%的电子俘获EC衰变）,考虑到β⁺衰变分支在液闪中有非常高的探测效率,实验采用液闪TDCR方法绝对测量18F核素活度。测量结果表明,β+衰变分支在Ultima GoldTM AB闪烁液中的探测效率接近1,液闪TDCR方法测量18F的不确定度水平仅为0.62%(k=2)。

Abstract

As an important short half-life radionuclide,the 18F is widely used in nuclear medicine for positron emission tomography(PET).It disintegrates to 18O by β⁺ emission(96.86%)and electron capture(3.14%).Since the very high detection efficiency of β+ decay branch in the liquid scintillation counter,the radioactive solution of 18F has been standardized by TDCR-LS method.The results indicate that the detection efficiency of β⁺ emission in Ultima GoldTM AB cocktail is close to 1 and the uncertainty of 18F by TDCR-LS method is equal to 0.6%(k=2).

导出引用

刘皓然,柳加成,梁珺成,杨元第,袁大庆. 液闪TDCR方法测量18F核素活度[J]. 计量学报. 2011, 32(z1): 26-29 https://doi.org/10.3969/j.issn.1000-1158.2011.z1.07

LIU Hao-ran,LIU Jia-cheng,LIANG Jun-cheng,YANG Yuan-di,YUAN Da-qing. Activity Measurement of 18F with TDCR-LS Methods[J]. Acta Metrologica Sinica. 2011, 32(z1): 26-29 https://doi.org/10.3969/j.issn.1000-1158.2011.z1.07

中图分类号： TB98

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