An intercomparison exercise is described that examines Monte Carlo modelling of anthropomorphic voxel phantoms in an idealized ground-contamination photon exposure scenario. Thirteen participants calculated and submitted organ and effective dose rates for comparison against a set of verified reference solutions. The effective dose rates are shown to agree with the reference value to within reasonable statistical uncertainties in five of the cases, though in only one of those was similar agreement also demonstrated in the evaluation of all requested organ dose rates. Orders-of-magnitude differences in doses are seen for some of the other participants, both internally within their own dataset and also relative to the reference solutions. Following limited feedback and suggestions from the organizer, up to two sets of revised solutions were resubmitted by some of the participants; these generally exhibited improved agreement, though not always. The overall observations and conclusions from this intercomparison exercise are summarized and discussed.
Bibliographical noteFunding Information: J Eakins and C Huet acknowledge and thank all participants who contributed solutions to the intercomparison exercise, especially those not already listed as co-authors of this publication.
Open Access: No Open Access licence
Publisher Copyright: Crown Copyright © 2021 Published by Elsevier Ltd. All rights reserved.
Citation: J. Eakins, C. Huet, H. Brkić, K. Capello, L. Desorgher, L. Epstein, J.G. Hunt, H.S. Kim, D. Krstic, Y.-K. Lee, M. Manohari, D. Nikezic, R.H. Shukrun, D. Souza-Santos, K. Tymińska, Monte Carlo calculation of organ and effective dose rates from ground contaminated by Am-241: Results of an international intercomparison exercise, Radiation Measurements, Volume 148, 2021, 106649, ISSN 1350-4487.
- Computational dosimetry
- Monte Carlo
- Photon exposures
- Radiological protection
- Voxel phantoms