RENEB/EURADOS field exercise 2019: robust dose estimation under outdoor conditions based on the dicentric chromosome assay

David Endesfelder*, Ursula Oestreicher, Ulrike Kulka, Elizabeth A. Ainsbury, Jayne Moquet, Stephen Barnard, Eric Gregoire, Juan S. Martinez, François Trompier, Yoann Ristic, Clemens Woda, Lovisa Waldner, Christina Beinke, Anne Vral, Joan Francesc Barquinero, Alfredo Hernandez, Sylwester Sommer, Katalin Lumniczky, Rita Hargitai, Alegría MontoroMirta Milic, Octávia Monteiro Gil, Marco Valente, Laure Bobyk, Olga Sevriukova, Laure Sabatier, María Jesús Prieto, Mercedes Moreno Domene, Antonella Testa, Clarice Patrono, Georgia Terzoudi, Sotiria Triantopoulou, Rositsa Histova, Andrzej Wojcik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: Biological and/or physical assays for retrospective dosimetry are valuable tools to recover the exposure situation and to aid medical decision making. To further validate and improve such biological and physical assays, in 2019, EURADOS Working Group 10 and RENEB performed a field exercise in Lund, Sweden, to simulate various real-life exposure scenarios. Materials and methods: For the dicentric chromosome assay (DCA), blood tubes were located at anthropomorphic phantoms positioned in different geometries and were irradiated with a 1.36 TBq 192Ir-source. For each exposure condition, dose estimates were provided by at least one laboratory and for four conditions by 17 participating RENEB laboratories. Three radio-photoluminescence glass dosimeters were placed at each tube to assess reference doses. Results: The DCA results were homogeneous between participants and matched well with the reference doses (≥95% of estimates within ±0.5 Gy of the reference). For samples close to the source systematic underestimation could be corrected by accounting for exposure time. Heterogeneity within and between tubes was detected for reference doses as well as for DCA doses estimates. Conclusions: The participants were able to successfully estimate the doses and to provide important information on the exposure scenarios under conditions closely resembling a real-life situation.

Original languageEnglish
Pages (from-to)1181-1198
Number of pages18
JournalInternational Journal of Radiation Biology
Volume97
Issue number9
DOIs
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This work was partly supported by European Radiation Dosimetry Group Working Group 10 (EURADOS WG 10), by Running the European Network of Biological and retrospective Physical dosimetry (RENEB) and by Public Health England (PHE). The authors thank all technical staff involved in this exercise for their great contribution to the experimental work.

Publisher Copyright:
© Copyright © 2021 The Author(s). Published with license by Taylor & Francis Group, LLC.

Keywords

  • Dicentric chromosome
  • EURADOS
  • RENEB
  • biological dosimetry
  • inter-laboratory comparison

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