Characterization of an itinerant NaI(Tl) spectrometric system for calibrating activimeters

Authors

  • Dayana Conceicao Instituto de Radioproteção e Dosimetria
  • José U. Delgado Instituto de Radioproteção e Dosimetria IRD/CNEN
  • Octávio L .T. Filho Instituto de Radioproteção e Dosimetria IRD/CNEN

DOI:

https://doi.org/10.21014/actaimeko.v15i1.2010

Keywords:

radionuclide metrology, activimeters, NaI(Tl) arrangement, characterization

Abstract

In radiopharmaceutical production centres and nuclear medicine services, the use of short-lived radionuclides as radiotracers is essential, with applications seeing significant growth and attracting the interest of national metrology laboratories. These laboratories are responsible for ensuring the traceability of radioactive standards, which is crucial for the precise determination of the activity of administered radiopharmaceuticals. However, the short half-life of radionuclides complicates direct traceability for nuclear medicine services (NMS). To overcome this limitation, the National Laboratory for Ionizing Radiation Metrology (LNMRI) is developing a mobile system based on an NaI(Tl) scintillation detector. This study aims to present the schematic arrangement of the proposed system for calibrating dose calibrators, as well as to conduct characterization tests of its main parameters and determine calibration factors for specific radionuclides. This development seeks to ensure traceability for key radiopharmaceuticals used in nuclear medicine services, providing greater accuracy and reliability in diagnosis and treatment.

Downloads

Published

2026-03-24

Issue

Vol. 15 No. 1 (2026)

Section

Research Papers

License

Copyright (c) 2026 Dayana Conceicao, José U. Delgado, Octávio L .T. Filho

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the CC BY 4.0, Creative Commons Attribution 4.0 International License.

Users are free to

  • share, i.e. copy and redistribute the material in any medium or format for any purpose, even commercially;
  • adapt, i.e. remix, transform, and build upon the material for any purpose, even commercially.

At the same time, the user must give appropriate credit, provide a link to the license, and indicate if changes were made.
Additional information about the license can be found at: https://creativecommons.org/licenses/by/4.0/.

Authors are

  • able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).