1
|
Rabus H, Zankl M, Gómez-Ros JM, Villagrasa C, Eakins J, Huet C, Brkić H, Tanner R. Lessons learnt from the recent EURADOS intercomparisons in computational dosimetry. RADIAT MEAS 2022. [DOI: 10.1016/j.radmeas.2022.106822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
2
|
Zankl M, Eakins J, Gómez Ros JM, Huet C, Jansen J, Moraleda M, Reichelt U, Struelens L, Vrba T. EURADOS intercomparison on the usage of the ICRP/ICRU adult reference computational phantoms. RADIAT MEAS 2021. [DOI: 10.1016/j.radmeas.2021.106596] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
Rabus H, Gómez-Ros JM, Villagrasa C, Eakins J, Vrba T, Blideanu V, Zankl M, Tanner R, Struelens L, Brkić H, Domingo C, Baiocco G, Caccia B, Huet C, Ferrari P. Quality assurance for the use of computational methods in dosimetry: activities of EURADOS Working Group 6 'Computational Dosimetry'. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2021; 41:46-58. [PMID: 33406511 DOI: 10.1088/1361-6498/abd914] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Working Group (WG) 6 'Computational Dosimetry' of the European Radiation Dosimetry Group promotes good practice in the application of computational methods for radiation dosimetry in radiation protection and the medical use of ionising radiation. Its cross-sectional activities within the association cover a large range of current topics in radiation dosimetry, including more fundamental studies of radiation effects in complex systems. In addition, WG 6 also performs scientific research and development as well as knowledge transfer activities, such as training courses. Monte Carlo techniques, including the use of anthropomorphic and other numerical phantoms based on voxelised geometrical models, play a strong part in the activities pursued in WG 6. However, other aspects and techniques, such as neutron spectra unfolding, have an important role as well. A number of intercomparison exercises have been carried out in the past to provide information on the accuracy with which computational methods are applied and whether best practice is being followed. Within the exercises that are still ongoing, the focus has changed towards assessing the uncertainty that can be achieved with these computational methods. Furthermore, the future strategy of WG 6 also includes an extension of the scope toward experimental benchmark activities and evaluation of cross-sections and algorithms, with the vision of establishing a gold standard for Monte Carlo methods used in medical and radiobiological applications.
Collapse
Affiliation(s)
- H Rabus
- Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, 10587 Berlin, Germany
| | - J M Gómez-Ros
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - C Villagrasa
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses, France
| | - J Eakins
- Public Health England (PHE), Didcot, United Kingdom
| | - T Vrba
- Czech Technical University in Prague (CTU), Prague, Czech Republic
| | - V Blideanu
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA), Saclay, France
| | - M Zankl
- Helmholtz Zentrum München German Research Center for Environmental Health (HMGU), Neuherberg, Germany
| | - R Tanner
- Public Health England (PHE), Didcot, United Kingdom
| | - L Struelens
- Belgian Nuclear Research Center (SCK·CEN), Mol, Belgium
| | - H Brkić
- J. J. Strossmayer University of Osijek (MEFOS), Osijek, Croatia
| | - C Domingo
- Universitat Autonoma de Barcelona (UAB), Barcelona, Spain
| | - G Baiocco
- Physics Department, University of Pavia, Pavia, Italy
| | - B Caccia
- National Institute of Health (ISS), Rome, Italy
| | - C Huet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses, France
| | - P Ferrari
- National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Bologna, Italy
| |
Collapse
|
4
|
McDonald JC. To compare, or to intercompare? RADIATION PROTECTION DOSIMETRY 2006; 118:361-2. [PMID: 16731687 DOI: 10.1093/rpd/ncl063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
|
5
|
Siebert BRL. Uncertainty in radiation dosimetry: basic concepts and methods. RADIATION PROTECTION DOSIMETRY 2006; 121:3-11. [PMID: 16868011 DOI: 10.1093/rpd/ncl094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Principally, uncertainty is associated with measured and computed values. The basic concepts of uncertainty are outlined, an overview on methods for its determination is given and the application of uncertainties in quality assurance is discussed. Based on the Guide to the expression of uncertainty in measurement and a forthcoming supplement to it, the paper identifies modelling of measurement or computation and the use of a probability distribution functions (PDFs) for expressing the degree of belief in possible values as basic concepts. All presently used proper methods for determining uncertainty can be derived from the Markov formula. Optimisation of measurements and computations as well as the acceptance of results by others are identified as the two major tasks of quality assurance based on analysing and stating uncertainty.
Collapse
Affiliation(s)
- B R L Siebert
- Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig Germany.
| |
Collapse
|
6
|
Kodeli I, Tanner R. Analysis of QUADOS problem on TLD-ALBEDO personal dosemeter responses using discrete ordinates and Monte Carlo methods. RADIATION PROTECTION DOSIMETRY 2005; 115:542-7. [PMID: 16381782 DOI: 10.1093/rpd/nci075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In the scope of QUADOS, a Concerted Action of the European Commission, eight calculational problems were prepared in order to evaluate the use of computational codes for dosimetry in radiation protection and medical physics, and to disseminate "good practice" throughout the radiation dosimetry community. This paper focuses on the analysis of the P4 problem on the 'TLD-albedo dosemeter: neutron and/or photon response of a four-element TL-dosemeter mounted on a standard ISO slab phantom'. Altogether 17 solutions were received from the participants, 14 of those transported neutrons and 15 photons. Most participants (16 out of 17) used Monte Carlo methods. These calculations are time-consuming, requiring several days of CPU time to perform the whole set of calculations and achieve good statistical precision. The possibility of using deterministic discrete ordinates codes as an alternative to Monte Carlo was therefore investigated and is presented here. In particular the capacity of the adjoint mode calculations is shown.
Collapse
Affiliation(s)
- Ivo Kodeli
- OECD/NEA Data Bank, 12 bd. des Iles, F-92130 Issy-les-Moulinaux, France.
| | | |
Collapse
|