On the measurement of positron emitters with Ge detectors

被引：4
|
作者：
Peyres, Virginia [1 ]
Garcia-Torano, Eduardo [1 ]
机构：
[1] Lab Metrol Radiac Ionizantes, Madrid 28040, Spain
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 637卷 / 01期
关键词：
Gamma spectrometry; Positron emitters; Standardization; Calibration; EFFICIENCY;
D O I：
10.1016/j.nima.2011.02.035
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
This paper discusses the problems related to the measurement of positron emitters with germanium detectors. Five positron emitters with important applications in nuclear medicine (Na-22, F-18, C-11, N-13 and Ga-68) have been studied. Measurements and Monte Carlo simulations have been used to determine the optimal conditions of measurement in gamma-ray spectrometry systems. The results obtained indicate that adding adequate absorbers, detection efficiencies are close to those of gamma emitters of similar energy measured in the same conditions, which allows a rapid calibration of a Ge-based spectrometry system. More accurate results are also presented using a detailed Monte Carlo simulation. Comparison to experimental data shows a good agreement. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 104
页数：5
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