Standardization of Ga-68 by coincidence measurements, liquid scintillation counting and 4πγ counting

被引：4
|
作者：
Roteta, Miguel
Peyres, Virginia
Rodriguez Barquero, Leonor
Garcia-Torano, Eduardo
Arenillas, Pablo
Balpardo, Christian
Rodrigues, Dario
Llovera, Roberto
机构：
来源：
APPLIED RADIATION AND ISOTOPES | 2012年 / 70卷 / 09期
关键词：
Ga-68; Ge-68; Radionuclide standardization; IMPLEMENTATION; GE-68/GA-68; EFFICIENCY; EMITTERS;
D O I：
10.1016/j.apradiso.2012.02.066
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The radionuclide Ga-68 is one of the few positron emitters that can be prepared in-house without the use of a cyclotron. It disintegrates to the ground state of Zn-68 partially by positron emission (89.1%) with a maximum energy of 1899.1 keV, and partially by electron capture (10.9%). This nuclide has been standardized in the frame of a cooperation project between the Radionuclide Metrology laboratories from CIEMAT (Spain) and CNEA (Argentina). Measurements involved several techniques: 4 pi beta-gamma coincidences, integral gamma counting and Liquid Scintillation Counting using the triple to double coincidence ratio and the CIEMAT/NIST methods. Given the short half-life of the radionuclide assayed, a direct comparison between results from both laboratories was excluded and a comparison of experimental efficiencies of similar Nal detectors was used instead. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2006 / 2011
页数：6
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