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Port M, Barquinero JF, Endesfelder D, Moquet J, Oestreicher U, Terzoudi G, Trompier F, Vral A, Abe Y, Ainsbury L, Alkebsi L, Amundson S, Badie C, Baeyens A, Balajee A, Balázs K, Barnard S, Bassinet C, Beaton-Green L, Beinke C, Bobyk L, Brochard P, Brzoska K, Bucher M, Ciesielski B, Cuceu C, Discher M, D,Oca M, Domínguez I, Doucha-Senf S, Dumitrescu A, Duy P, Finot F, Garty G, Ghandhi S, Gregoire E, Goh V, Güçlü I, Hadjiiska L, Hargitai R, Hristova R, Ishii K, Kis E, Juniewicz M, Kriehuber R, Lacombe J, Lee Y, Lopez Riego M, Lumniczky K, Mai T, Maltar-Strmečki N, Marrale M, Martinez J, Marciniak A, Maznyk N, McKeever S, Meher P, Milanova M, Miura T, Gil OM, Montoro A, Domene MM, Mrozik A, Nakayama R, O’Brien G, Oskamp D, Ostheim P, Pajic J, Pastor N, Patrono C, Pujol-Canadell M, Rodriguez MP, Repin M, Romanyukha A, Rößler U, Sabatier L, Sakai A, Scherthan H, Schüle S, Seong K, Sevriukova O, Sholom S, Sommer S, Suto Y, Sypko T, Szatmári T, Takahashi-Sugai M, Takebayashi K, Testa A, Testard I, Tichy A, Triantopoulou S, Tsuyama N, Unverricht-Yeboah M, Valente M, Van Hoey O, Wilkins R, Wojcik A, Wojewodzka M, Younghyun L, Zafiropoulos D, Abend M. RENEB Inter-Laboratory Comparison 2021: Inter-Assay Comparison of Eight Dosimetry Assays. Radiat Res 2023; 199:535-555. [PMID: 37310880 PMCID: PMC10508307 DOI: 10.1667/rade-22-00207.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/10/2023] [Indexed: 06/15/2023]
Abstract
Tools for radiation exposure reconstruction are required to support the medical management of radiation victims in radiological or nuclear incidents. Different biological and physical dosimetry assays can be used for various exposure scenarios to estimate the dose of ionizing radiation a person has absorbed. Regular validation of the techniques through inter-laboratory comparisons (ILC) is essential to guarantee high quality results. In the current RENEB inter-laboratory comparison, the performance quality of established cytogenetic assays [dicentric chromosome assay (DCA), cytokinesis-block micronucleus assay (CBMN), stable chromosomal translocation assay (FISH) and premature chromosome condensation assay (PCC)] was tested in comparison to molecular biological assays [gamma-H2AX foci (gH2AX), gene expression (GE)] and physical dosimetry-based assays [electron paramagnetic resonance (EPR), optically or thermally stimulated luminescence (LUM)]. Three blinded coded samples (e.g., blood, enamel or mobiles) were exposed to 0, 1.2 or 3.5 Gy X-ray reference doses (240 kVp, 1 Gy/min). These doses roughly correspond to clinically relevant groups of unexposed to low exposed (0-1 Gy), moderately exposed (1-2 Gy, no severe acute health effects expected) and highly exposed individuals (>2 Gy, requiring early intensive medical care). In the frame of the current RENEB inter-laboratory comparison, samples were sent to 86 specialized teams in 46 organizations from 27 nations for dose estimation and identification of three clinically relevant groups. The time for sending early crude reports and more precise reports was documented for each laboratory and assay where possible. The quality of dose estimates was analyzed with three different levels of granularity, 1. by calculating the frequency of correctly reported clinically relevant dose categories, 2. by determining the number of dose estimates within the uncertainty intervals recommended for triage dosimetry (±0.5 Gy or ±1.0 Gy for doses <2.5 Gy or >2.5 Gy), and 3. by calculating the absolute difference (AD) of estimated doses relative to the reference doses. In total, 554 dose estimates were submitted within the 6-week period given before the exercise was closed. For samples processed with the highest priority, earliest dose estimates/categories were reported within 5-10 h of receipt for GE, gH2AX, LUM, EPR, 2-3 days for DCA, CBMN and within 6-7 days for the FISH assay. For the unirradiated control sample, the categorization in the correct clinically relevant group (0-1 Gy) as well as the allocation to the triage uncertainty interval was, with the exception of a few outliers, successfully performed for all assays. For the 3.5 Gy sample the percentage of correct classifications to the clinically relevant group (≥2 Gy) was between 89-100% for all assays, with the exception of gH2AX. For the 1.2 Gy sample, an exact allocation to the clinically relevant group was more difficult and 0-50% or 0-48% of the estimates were wrongly classified into the lowest or highest dose categories, respectively. For the irradiated samples, the correct allocation to the triage uncertainty intervals varied considerably between assays for the 1.2 Gy (29-76%) and 3.5 Gy (17-100%) samples. While a systematic shift towards higher doses was observed for the cytogenetic-based assays, extreme outliers exceeding the reference doses 2-6 fold were observed for EPR, FISH and GE assays. These outliers were related to a particular material examined (tooth enamel for EPR assay, reported as kerma in enamel, but when converted into the proper quantity, i.e. to kerma in air, expected dose estimates could be recalculated in most cases), the level of experience of the teams (FISH) and methodological uncertainties (GE). This was the first RENEB ILC where everything, from blood sampling to irradiation and shipment of the samples, was organized and realized at the same institution, for several biological and physical retrospective dosimetry assays. Almost all assays appeared comparably applicable for the identification of unexposed and highly exposed individuals and the allocation of medical relevant groups, with the latter requiring medical support for the acute radiation scenario simulated in this exercise. However, extreme outliers or a systematic shift of dose estimates have been observed for some assays. Possible reasons will be discussed in the assay specific papers of this special issue. In summary, this ILC clearly demonstrates the need to conduct regular exercises to identify research needs, but also to identify technical problems and to optimize the design of future ILCs.
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Affiliation(s)
- M. Port
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | | | | | - J. Moquet
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards Division, Oxfordshire, United Kingdom
| | | | - G. Terzoudi
- National Centre for Scientific Research “Demokritos”, Health Physics, Radiobiology & Cytogenetics Laboratory, Agia Paraskevi, Greece
| | - F. Trompier
- Institut de Radioprotection et de Surete Nucleaire, Fontenay aux Roses, France
| | - A. Vral
- Ghent University, Radiobiology Research Unit, Gent, Belgium
| | - Y. Abe
- Department of Radiation Biology and Protection, Nagasaki University, Japan
| | - L. Ainsbury
- UK Health Security Agency and Office for Health Improvement and Disparities, Cytogenetics and Pathology Group, Oxfordshire, England
| | - L Alkebsi
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, Chiba, Japan
| | - S.A. Amundson
- Columbia University, Irving Medical Center, Center for Radiological Research, New York, New York
| | - C. Badie
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards Division, Oxfordshire, United Kingdom
| | - A. Baeyens
- Ghent University, Radiobiology Research Unit, Gent, Belgium
| | - A.S. Balajee
- Cytogenetic Biodosimetry Laboratory, Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee
| | - K. Balázs
- Radiation Medicine Unit, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
| | - S. Barnard
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards Division, Oxfordshire, United Kingdom
| | - C. Bassinet
- Institut de Radioprotection et de Surete Nucleaire, Fontenay aux Roses, France
| | | | - C. Beinke
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - L. Bobyk
- Institut de Recherche Biomédicale des Armées (IRBA), Bretigny Sur Orge, France
| | | | - K. Brzoska
- Institute of Nuclear Chemistry and Technology, Warsaw, Poland
| | - M. Bucher
- Bundesamt für Strahlenschutz, Oberschleißheim, Germany
| | - B. Ciesielski
- Medical University of Gdansk, Department of Physics and Biophysics, Gdansk, Poland
| | - C. Cuceu
- Genevolution, Porcheville, France
| | - M. Discher
- Paris-Lodron-University of Salzburg, Department of Environment and Biodiversity, 5020 Salzburg, Austria
| | - M.C. D,Oca
- Università Degli Studi di Palermo, Dipartimento di Fisica e Chimica “Emilio Segrè,” Palermo, Italy
| | - I. Domínguez
- Universidad de Sevilla, Departamento de Biología Celular, Sevilla, Spain
| | | | - A. Dumitrescu
- National Institute of Public Health, Radiation Hygiene Laboratory, Bucharest, Romania
| | - P.N. Duy
- Dalat Nuclear Research Institute, Radiation Technlogy & Biotechnology Center, Dalat City, Vietnam
| | - F. Finot
- Genevolution, Porcheville, France
| | - G. Garty
- Columbia University, Irving Medical Center, Center for Radiological Research, New York, New York
| | - S.A. Ghandhi
- Columbia University, Irving Medical Center, Center for Radiological Research, New York, New York
| | - E. Gregoire
- Institut de Radioprotection et de Surete Nucleaire, Fontenay aux Roses, France
| | - V.S.T. Goh
- Department of Radiobiology, Singapore Nuclear Research and Safety Initiative (SNRSI), National University of Singapore, Singapore
| | - I. Güçlü
- TENMAK, Nuclear Energy Research Institute, Technology Development and Nuclear Research Department, Türkey
| | - L. Hadjiiska
- National Centre of Radiobiology and Radiation Protection, Sofia, Bulgaria
| | - R. Hargitai
- Radiation Medicine Unit, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
| | - R. Hristova
- National Centre of Radiobiology and Radiation Protection, Sofia, Bulgaria
| | - K. Ishii
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, Chiba, Japan
| | - E. Kis
- Radiation Medicine Unit, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
| | - M. Juniewicz
- Medical University of Gdansk, Department of Physics and Biophysics, Gdansk, Poland
| | - R. Kriehuber
- Department of Safety and Radiation Protection, Forschungszentrum Jülich, Jülich, Germany
| | - J. Lacombe
- University of Arizona, Center for Applied Nanobioscience & Medicine, Phoenix, Arizona
| | - Y. Lee
- Laboratory of Biological Dosimetry, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | | | - K. Lumniczky
- Radiation Medicine Unit, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
| | - T.T. Mai
- Dalat Nuclear Research Institute, Radiation Technlogy & Biotechnology Center, Dalat City, Vietnam
| | - N. Maltar-Strmečki
- Ruðer Boškovic Institute, Division of Physical Chemistry, Zagreb, Croatia
| | - M. Marrale
- Università Degli Studi di Palermo, Dipartimento di Fisica e Chimica “Emilio Segrè,” Palermo, Italy
| | - J.S. Martinez
- Institut de Radioprotection et de Surete Nucleaire, Fontenay aux Roses, France
| | - A. Marciniak
- Medical University of Gdansk, Department of Physics and Biophysics, Gdansk, Poland
| | - N. Maznyk
- Radiation Cytogenetics Laboratory, S.P. Grigoriev Institute for Medical Radiology and Oncology of Ukrainian National Academy of Medical Science, Kharkiv, Ukraine
| | - S.W.S. McKeever
- Radiation Dosimetry Laboratory, Oklahoma State University, Stillwater, Oklahoma
| | | | - M. Milanova
- University of Defense, Faculty of Military Health Sciences, Hradec Králové, Czech Republic
| | - T. Miura
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - O. Monteiro Gil
- Instituto Superior Técnico/ Campus Tecnológico e Nuclear, Lisbon, Portugal
| | - A. Montoro
- Servicio de Protección Radiológica. Laboratorio de Dosimetría Biológica, Valencia, Spain
| | - M. Moreno Domene
- Hospital General Universitario Gregorio Marañón, Laboratorio de dosimetría biológica, Madrid, Spain
| | - A. Mrozik
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
| | - R. Nakayama
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - G. O’Brien
- UK Health Security Agency, Radiation, Chemical and Environmental Hazards Division, Oxfordshire, United Kingdom
| | - D. Oskamp
- Department of Safety and Radiation Protection, Forschungszentrum Jülich, Jülich, Germany
| | - P. Ostheim
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - J. Pajic
- Serbian Institute of Occupational Health, Belgrade, Serbia
| | - N. Pastor
- Universidad de Sevilla, Departamento de Biología Celular, Sevilla, Spain
| | - C. Patrono
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | | | - M.J. Prieto Rodriguez
- Hospital General Universitario Gregorio Marañón, Laboratorio de dosimetría biológica, Madrid, Spain
| | - M. Repin
- Columbia University, Irving Medical Center, Center for Radiological Research, New York, New York
| | | | - U. Rößler
- Bundesamt für Strahlenschutz, Oberschleißheim, Germany
| | | | - A. Sakai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - H. Scherthan
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - S. Schüle
- Bundeswehr Institute of Radiobiology, Munich, Germany
| | - K.M. Seong
- Laboratory of Biological Dosimetry, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | | | - S. Sholom
- Radiation Dosimetry Laboratory, Oklahoma State University, Stillwater, Oklahoma
| | - S. Sommer
- Institute of Nuclear Chemistry and Technology, Warsaw, Poland
| | - Y. Suto
- Department of Radiation Measurement and Dose Assessment, National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, Chiba, Japan
| | - T. Sypko
- Radiation Cytogenetics Laboratory, S.P. Grigoriev Institute for Medical Radiology and Oncology of Ukrainian National Academy of Medical Science, Kharkiv, Ukraine
| | - T. Szatmári
- Radiation Medicine Unit, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
| | - M. Takahashi-Sugai
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - K. Takebayashi
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - A. Testa
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy
| | - I. Testard
- CEA-Saclay, Gif-sur-Yvette Cedex, France
| | - A. Tichy
- University of Defense, Faculty of Military Health Sciences, Hradec Králové, Czech Republic
| | - S. Triantopoulou
- National Centre for Scientific Research “Demokritos”, Health Physics, Radiobiology & Cytogenetics Laboratory, Agia Paraskevi, Greece
| | - N. Tsuyama
- Department of Radiation Life Sciences, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - M. Unverricht-Yeboah
- Department of Safety and Radiation Protection, Forschungszentrum Jülich, Jülich, Germany
| | - M. Valente
- CEA-Saclay, Gif-sur-Yvette Cedex, France
| | - O. Van Hoey
- Belgian Nuclear Research Center SCK CEN, Mol, Belgium
| | | | - A. Wojcik
- Stockholm University, Stockholm, Sweden
| | - M. Wojewodzka
- Institute of Nuclear Chemistry and Technology, Warsaw, Poland
| | - Lee Younghyun
- Laboratory of Biological Dosimetry, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - D. Zafiropoulos
- Laboratori Nazionali di Legnaro - Istituto Nazionale di Fisica Nucleare, Legnaro, Italy
| | - M. Abend
- Bundeswehr Institute of Radiobiology, Munich, Germany
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Takebayashi K, Echizenya K, Kameya Y, Nakajima D, Nakayama R, Fujishima Y, Goh VST, Abe Y, Kasai K, Anderson DA, Blakely WF, Miura T. Mitotic index maximization with no effect on radiation-induced dicentric chromosome frequency. Int J Radiat Biol 2022; 99:750-759. [PMID: 36318780 DOI: 10.1080/09553002.2023.2142981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
PURPOSE The dicentric chromosome (Dic) assay, which is the gold standard for biological dose assessment in radiation emergency medicine, requires an analysis of at least 500 lymphocyte metaphases or 100 Dic aberrations. Therefore, peripheral blood culture conditions able to obtain a high frequency of metaphases for efficient dose evaluation should be optimized. However, the type of blood cultures [i.e. whole blood (WB) or isolated peripheral blood mononuclear cell (PBMC)-culture] and blood volume differ between biodosimetry laboratories. The purpose of this study is to investigate the blood volume at which a high mitotic index (MI) is obtained in peripheral WB-culture and isolated PBMC-culture, and to examine the possible effect of blood volume on radiation-induced Dic frequency. MATERIALS AND METHODS Peripheral blood was collected from three healthy donors with their informed consent. The complete and differential blood counts were performed using an automated hematology analyzer. After blood count, peripheral blood was irradiated with 0 or 2 Gy X-ray. Blood was cultured with phytohemagglutinin (180 μg/ml) and demecolcine (0.05 μg/ml) for 48 h. The MI and Dic frequency were analyzed in 5, 10, 15, 20, 25, and 30% WB-cultures and 0.6, 1.2, 1.8, 2.4, 3.0, 3.6, and 4.2 ml WB-equivalent PBMC-cultures. RESULTS In WB-culture, MI showed the highest value (∼22%) in 5-15% WB-culture and then gradually decreased to ∼9% with 30% WB-culture. MI peaked at 36 and 31% in 1.8 and 2.4 ml-WB equivalent volumes for PMBC-cultures, respectively. MI progressively decreased as the amount of PBMCs increased. Although individual differences were observed in the MI values among the three subjects, all the subjects showed the same tendency and higher MI was seen in PBMC than WB-cultures. However, these factors had no significant impact on the yield of Dics. In all culture conditions, the estimated dose calculated based on the Dic frequency was equivalent to the absorbed dose of ex vivo X-ray-irradiated blood. CONCLUSION While MI was affected by the blood culture type and the volume of cultured blood, Dic yield did not differ significantly between these conditions. These results could be used by relevant laboratories to optimize MI in certain circumstances.
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Affiliation(s)
- Kai Takebayashi
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Keito Echizenya
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Yuki Kameya
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Daichi Nakajima
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Ryo Nakayama
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Yohei Fujishima
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - Valerie Swee Ting Goh
- Department of Radiobiology, Singapore Nuclear Research and Safety Initiative, National University of Singapore, Singapore
| | - Yu Abe
- Department of Radiation Biology and Protection, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Kosuke Kasai
- Department of Bioscience and Laboratory Medicine, Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Donovan A. Anderson
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - William F. Blakely
- Scientific Research Department, Armed Forces Radiobiology Research Institute (AFRRI), Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Tomisato Miura
- Department of Risk Analysis and Biodosimetry, Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
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Gregoire E, Barquinero JF, Gruel G, Benadjaoud M, Martinez JS, Beinke C, Balajee A, Beukes P, Blakely WF, Dominguez I, Duy PN, Gil OM, Güçlü I, Guogyte K, Hadjidekova SP, Hadjidekova V, Hande P, Jang S, Lumniczky K, Meschini R, Milic M, Montoro A, Moquet J, Moreno M, Norton FN, Oestreicher U, Pajic J, Sabatier L, Sommer S, Testa A, Terzoudi G, Valente M, Venkatachalam P, Vral A, Wilkins RC, Wojcik A, Zafiropoulos D, Kulka U. RENEB Inter-Laboratory comparison 2017: limits and pitfalls of ILCs. Int J Radiat Biol 2021; 97:888-905. [PMID: 33970757 DOI: 10.1080/09553002.2021.1928782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 04/01/2021] [Accepted: 05/06/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE In case of a mass-casualty radiological event, there would be a need for networking to overcome surge limitations and to quickly obtain homogeneous results (reported aberration frequencies or estimated doses) among biodosimetry laboratories. These results must be consistent within such network. Inter-laboratory comparisons (ILCs) are widely accepted to achieve this homogeneity. At the European level, a great effort has been made to harmonize biological dosimetry laboratories, notably during the MULTIBIODOSE and RENEB projects. In order to continue the harmonization efforts, the RENEB consortium launched this intercomparison which is larger than the RENEB network, as it involves 38 laboratories from 21 countries. In this ILC all steps of the process were monitored, from blood shipment to dose estimation. This exercise also aimed to evaluate the statistical tools used to compare laboratory performance. MATERIALS AND METHODS Blood samples were irradiated at three different doses, 1.8, 0.4 and 0 Gy (samples A, C and B) with 4-MV X-rays at 0.5 Gy min-1, and sent to the participant laboratories. Each laboratory was requested to blindly analyze 500 cells per sample and to report the observed frequency of dicentric chromosomes per metaphase and the corresponding estimated dose. RESULTS This ILC demonstrates that blood samples can be successfully distributed among laboratories worldwide to perform biological dosimetry in case of a mass casualty event. Having achieved a substantial harmonization in multiple areas among the RENEB laboratories issues were identified with the available statistical tools, which are not capable to advantageously exploit the richness of results of a large ILCs. Even though Z- and U-tests are accepted methods for biodosimetry ILCs, setting the number of analyzed metaphases to 500 and establishing a tests' common threshold for all studied doses is inappropriate for evaluating laboratory performance. Another problem highlighted by this ILC is the issue of the dose-effect curve diversity. It clearly appears that, despite the initial advantage of including the scoring specificities of each laboratory, the lack of defined criteria for assessing the robustness of each laboratory's curve is a disadvantage for the 'one curve per laboratory' model. CONCLUSIONS Based on our study, it seems relevant to develop tools better adapted to the collection and processing of results produced by the participant laboratories. We are confident that, after an initial harmonization phase reached by the RENEB laboratories, a new step toward a better optimization of the laboratory networks in biological dosimetry and associated ILC is on the way.
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Affiliation(s)
- Eric Gregoire
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | | | - Gaetan Gruel
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | | | - Juan S Martinez
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | - Christina Beinke
- Bundeswehr Institute of Radiobiology affiliated to the University of Ulm, Munich, Germany
| | - Adayabalam Balajee
- Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, USA
| | | | - William F Blakely
- Armed Forces Radiobiology Research Institute, Uniformed Service University of the Health, Sciences, Bethesda, MD, USA
| | | | - Pham Ngoc Duy
- Center of Biotechnology, Nuclear Research Institute, Dalat city, Vietnam
| | - Octávia Monteiro Gil
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Bobadela-LRS, Portugal
| | - Inci Güçlü
- Turkish Atomic Energy Authority, Cekmece Nuclear Research and Training Center, Radiobiology Unit Yarımburgaz, Istanbul, Turkey
| | | | | | | | - Prakash Hande
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | - Katalin Lumniczky
- National Research Institute for Radiobiology & Radiohygiene, Budapest, Hungary
| | | | | | - Alegria Montoro
- Fundación para la Investigación del Hospital Universitario LA FE de la Comunidad Valenciana, Valencia, Spain
| | - Jayne Moquet
- Public Health England, Centre for Radiation Chemical and Environmental Hazards, Chilton, UK
| | - Mercedes Moreno
- Servicio Madrileño de Salud - Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Farrah N Norton
- Radiobiology & Health, Canadian Nuclear Laboratories, Chalk River, Canada
| | - Ursula Oestreicher
- Federal Office for Radiation Protection (BfS), Oberschleissheim, Germany
| | - Jelena Pajic
- Serbian Institute of Occupational Health, Radiation Protection Center, Belgrade, Serbia
| | - Laure Sabatier
- PROCyTOX, Commissariat à l'Energie Atomique et aux Energies Alternatives, Fontenay aux-Roses, France and Université Paris-Saclay, France
| | - Sylwester Sommer
- Institute of Nuclear Chemistry and Technology (INCT), Warsaw, Poland
| | - Antonella Testa
- Agenzia Nazionale per le Nuove Tecnologie, L´Energia e lo Sviluppo Economico Sostenibile, Rome, Italy
| | - Georgia Terzoudi
- National Center for Scientific Research "Demokritos", NCSR"D", Athens, Greece
| | | | | | - Anne Vral
- Radiobiology Research Unit, Gent University, Gent, Belgium
| | | | - Andrzej Wojcik
- Institute Molecular Biosciences, Stockholm University, Stockholm, Sweden
| | | | - Ulrike Kulka
- Federal Office for Radiation Protection (BfS), Oberschleissheim, Germany
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