Activity characterization of 192Ir brachytherapy wires

被引：2

作者：

Damasceno, A. L. O.

Iwahara, A.

Silva, M. A. L.

Estrada, J. J. S.

机构：

[1] Inst Mil Engn, BR-22290270 Rio De Janeiro, Brazil

[2] Comissao Nacl Energua Nucl, Inst Radioprotecao & Dosimetria, BR-22780160 Rio De Janeiro, Brazil

[3] Fed Univ Rio De Janeiro, Coordenacao Programs Posgrad Engn, BR-21945970 Rio De Janeiro, Brazil

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2006年 / 269卷 / 02期

关键词：

D O I：

10.1007/s10967-006-0385-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The radionuclide Ir-192 has been increasingly used as a brachytherapy source and manufactured in different geometry forms (thin wires, hairpins, needles or point sources). A procedure for the characterization of the activity content of Ir-192 wire sources was developed in order to establish the secondary standard activity measurement system based on the ionization chamber set up at Brazilian National Laboratory for Ionizing Radiation Metrology (LNMRI). Firstly, the ion current of the ionization chamber is measured and, subsequently, the activity is determined in a destructive analysis. This procedure enables obtaining the calibration factor for wire sources that can be used for further activity determination of similar sources in a non-destructive analysis. Accurate activity determination is needed for dosimetric measurements and for helping the manufacturers to improve its quality control programs.

引用

页码：317 / 323

页数：7

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