22 results match your criteria: "Radiation Protection Centre[Affiliation]"
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.
View Article and Find Full Text PDFRadiat Res
June 2023
Bundeswehr Institute of Radiobiology, Munich, Germany.
After large-scale radiation accidents where many individuals are suspected to be exposed to ionizing radiation, biological and physical retrospective dosimetry assays are important tools to aid clinical decision making by categorizing individuals into unexposed/minimally, moderately or highly exposed groups. Quality-controlled inter-laboratory comparisons of simulated accident scenarios are regularly performed in the frame of the European legal association RENEB (Running the European Network of Biological and Physical retrospective Dosimetry) to optimize international networking and emergency readiness in case of large-scale radiation events. In total 33 laboratories from 22 countries around the world participated in the current RENEB inter-laboratory comparison 2021 for the dicentric chromosome assay.
View Article and Find Full Text PDFJ Radiol Prot
August 2022
Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania.
National diagnostic reference levels (DRLs) are essential tools for optimizing protocols and protecting patients from an unjustified radiation exposure. The aim of this study was to conduct a nationwide survey of adult patient doses received from nuclear medicine (NM) procedures and to update national DRL (NDRL) values for most common procedures. Data on the radioactivity administered to standard adult patients were collected from all Lithuanian hospitals using NM applications in practice, between 2017 and 2022.
View Article and Find Full Text PDFLife (Basel)
December 2021
Biomedical Physics Laboratory, National Cancer Institute, LT-08660 Vilnius, Lithuania.
Background: Up to 95% of irradiated patients suffer from ionizing radiation (IR) induced early skin reaction, acute radiation dermatitis (ARD). Some experts think that additional skin hydration can reduce acute skin reactions. Individual radiosensitivity (IRS) determined from lymphocytes may help to predict acute radiation toxicity.
View Article and Find Full Text PDFInt J Radiat Biol
July 2024
Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Sweden.
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.
Radiat Prot Dosimetry
December 2018
Biomedical Physics Laboratory, National Cancer Institute, Vilnius, Lithuania.
According to the guidelines on cancer treatment up to 52% of newly diagnosed cancer patients should be treated with external beam radiotherapy. Ionizing radiation (IR)-induced skin injury (radiation dermatitis) occurs in up to 95% of radiotherapy patients and can manifest from mild erythema till necrosis and ulceration. Individual radiosensitivity was proposed to be an important factor for the development of adverse reactions to IR.
View Article and Find Full Text PDFPatients receiving identical radiation treatments experience different effects, from undetectable to severe, on normal tissues. A crucial factor of radiotherapy related side effects is individual radiosensitivity. It is difficult to spare surrounding normal tissues delivering radiation to cancer cells during radiotherapy.
View Article and Find Full Text PDFInt J Radiat Biol
January 2017
ai Helmholtz Zentrum München (HMGU) , Neuherberg , Germany.
Purpose: RENEB, 'Realising the European Network of Biodosimetry and Physical Retrospective Dosimetry,' is a network for research and emergency response mutual assistance in biodosimetry within the EU. Within this extremely active network, a number of new dosimetry methods have recently been proposed or developed. There is a requirement to test and/or validate these candidate techniques and inter-comparison exercises are a well-established method for such validation.
View Article and Find Full Text PDFRadiat Prot Dosimetry
July 2015
Radiation Protection Centre, Kalvariju 153, Vilnius 08221, Lithuania.
The assessment of eye lens doses for workers during interventional radiology (IR) procedures was performed using a new eye lens dosemeter. In parallel, the results of routine individual monitoring were analysed and compared with the results obtained from measurements with a new eye lens dosemeter. The eye lens doses were assessed using Hp(3) measured at the level of the eyes and were compared with Hp(10) measured with the whole-body dosemeter above the lead collar.
View Article and Find Full Text PDFJ Environ Radioact
October 2014
Department of Neurobiology and Biophysics, Faculty of Natural Science, Vilnius University, LT-03101 Vilnius, Lithuania.
The impact of low-dose ionizing radiation on the electrical signalling pattern and membrane properties of the characea Nitellopsis obtusa was examined using conventional glass-microelectrode and voltage-clamp techniques. The giant cell was exposed to a ubiquitous radionuclide of high biological importance - tritium - for low-dose irradiation. Tritium was applied as tritiated water with an activity concentration of 15 kBq L(-1) (an external dose rate that is approximately 0.
View Article and Find Full Text PDFRadiat Prot Dosimetry
March 2011
Radiation Protection Centre, Institute of Public Health of Federation of Bosnia and Herzegovina, Maršala Tita 9, 71000 Sarajevo, Bosnia and Herzegovina.
Monitoring of occupationally exposed workers in Bosnia and Herzegovina started in 1960s and it was interrupted in 1992. Dosimetry service resumed in 1999 when the International Atomic Energy Agency provided Radiation Protection Centre with Harshaw 4500 Thermoluminescence dosemeter (TLD)-reader and the first set of TLDs. The highest doses are received by professionals working in interventional procedures (radiology, cardiology, gastroenterohepatology etc.
View Article and Find Full Text PDFRadiat Prot Dosimetry
August 2010
Radiation Protection Centre, Kalvariju 153, LT-08221 Vilnius, Lithuania.
Management of patient doses and determination of national or local diagnostic reference levels (DRLs) are important parts of a quality control program in X-ray diagnostics. In Lithuania, national DRLs for specific radiographic examinations are comparatively higher than those recommended by the European Commission (EC) and the International Atomic Energy Agency (IAEA). A survey of entrance surface doses (ESDs) was performed to investigate the reasons for exceeding the European and the IAEA DRLs.
View Article and Find Full Text PDFRadiat Prot Dosimetry
August 2010
Radiation Protection Centre of the Institute of Public Health of Federation of Bosnia and Herzegovina, M Tita 9, Sarajevo.
Monitoring of occupationally exposed persons in Bosnia and Herzegovina started in 1960s and it was interrupted in 1992. Dosimetry service resumed in 1999 when the International Atomic Energy Agency provided Harshaw 4500 TLD-reader and the first set of TLDs for the Radiation Protection Centre (RPC) of the Institute of Public Health of the Federation of Bosnia and Herzegovina. In January 2009, the RPC covered 1279 professionals with personal dosimetry, which is more than 70 % of all radiation workers in the country.
View Article and Find Full Text PDFRadiat Prot Dosimetry
August 2008
Radiation Protection Centre, Kalvariju 153, Vilnius LT-08221, Lithuania.
This study deals with analysis of situation and results of internal exposure monitoring of radiation workers and population in Lithuania. Radiation workers are assessed for internal exposures by direct methods--whole body counting or organ counting by gamma spectrometry at the Radiation Protection Centre and Ignalina Nuclear Power Plant (INPP). Results of monitoring of INPP and nuclear medicine workers show that no significant activities were detected.
View Article and Find Full Text PDFRadiat Prot Dosimetry
June 2006
Estonian Radiation Protection Centre, Kopli 76, 10416 Tallinn, Estonia.
This paper presents a short description of the Estonian radiological facilities and the doses to staff in radiology and cardiology. For each major work practice, the annual (2002) average effective doses are listed: X-ray diagnostics (radiologists: 1.11 mSv; radiographers: 1.
View Article and Find Full Text PDFRadiat Prot Dosimetry
March 2007
Radiation Protection Centre, Kalvariju g. 153, LT-08221 Vilnius, Lithuania.
The aim of this paper was an assessment of external exposure indoors and its dependence on construction materials and indoor radon concentrations in Lithuanian living houses. Relationship of absorbed dose rate in air indoors and activity indexes of the most commonly used construction materials (wood, concrete and bricks) have been studied using results received in measurements done in >4700 rooms in 1995-2005. Possible connections of dose rate indoors with indoor radon concentrations are also discussed.
View Article and Find Full Text PDFRadiat Prot Dosimetry
September 2005
Radiation Protection Centre, Kaunas department, Kaunas, Lithuania.
Optimisation in X-ray imaging in order to reduce patient doses during diagnostic X-ray examinations is a complex process given the high level of image quality required. When quality systems are implemented as a basis for optimisation, attention should be paid to the qualifications of the staff and quality control of the equipment and of the X-ray imaging procedures, as well as to the methods used to evaluate the quality of these procedures. Until recently, quality control procedures at health care institutions in Lithuania were limited to the testing of X-ray units.
View Article and Find Full Text PDFRadiat Prot Dosimetry
September 2005
Radiation Protection Centre, Kalvariju 153, LT-08221 Vilnius, Lithuania.
One of the most effective means towards optimisation of radiation protection for patients undergoing radiodiagnostic examinations are the diagnostic reference levels. In order to ensure the effective use of these levels, they have to be set properly. National characteristics, such as the conditions of the radiological equipments, the training of the staff, the availability of quality assurance systems, etc.
View Article and Find Full Text PDFRadiat Prot Dosimetry
December 2003
Radiation Protection Centre, Kalvariju 153, Vilnius LT-2042, Lithuania.
After Lithuania regained independence, the legal basis for existing radiation protection was modified radically according to the IAEA, ICRP recommendations and the requirements of legislation of the European Community. The legal basis for internal dosimetry and a functioning system of assessment of exposure to intake of radionuclides have been created in the Radiation Protection Centre (regulatory authority in radiation protection). Direct and indirect measurements of concentrations of radionuclides are used for the assessment of internal doses of workers and the public.
View Article and Find Full Text PDFInt J Occup Med Environ Health
November 2003
Radiation Protection Centre, Vilnius, Lithuania.
Background: In Lithuania the average annual effective dose due to cosmic radiation at the sea level is 0.38 mSv. The dose rate caused by cosmic radiation increases with altitude due to the decrease in attenuation of cosmic radiation by atmosphere.
View Article and Find Full Text PDFRadiat Prot Dosimetry
March 2002
Ministry of Health, Radiation Protection Centre, Kalvariju 153, Vilnius LT-2042, Lithuania.
The personal dosimetry service of the Radiation Protection Centre performs individual monitoring for all the industrial, medical and research radiation workers. The RADOS and DTU TLD systems are used for monitoring of doses. The DTU TLD system is used for measurements of doses to extremities and for measurements of public external exposure.
View Article and Find Full Text PDFSci Total Environ
May 2001
Radiation Protection Centre, Vilnius, Lithuania.