Collective effective dose from diagnostic radiology in Ukraine.

abstract：:During the operation of high-energy accelerators, the interaction of radiation with matter can lead to the activation of the machine components and of the surrounding infrastructures. As a result of maintenance operation and during decommissioning of the installation, considerable amounts of radioactive waste are evac...

journal_title：Radiation protection dosimetry

authors： Ulrici L,Magistris M

更新日期：2009-11-01 00:00:00

abstract：:The use of depleted uranium ammunition in South Serbia during the 1999 Kosovo conflict raised a great deal of public concern in the Balkans. Radioactivity levels of 238U in 20 wells and lake water samples were checked from the viewpoint of internal radiation exposure for South Serbian subjects. We have measured 238U c...

journal_title：Radiation protection dosimetry

authors： Sahoo SK,Matsumoto M,Shiraishi K,Fujimoto K,Cuknic O,Zunic ZS

更新日期：2007-01-01 00:00:00

abstract：:To study the shielding effect of radiologists' eye lens with lead glasses of different equivalent thicknesses and sizes in interventional radiology procedures. Using the human voxel phantom with a more accurate model of the eye and MCNPX software, eye lens doses of the radiologists who wearing different kinds of lead ...

journal_title：Radiation protection dosimetry

authors： Hu P,Kong Y,Chen B,Liu Q,Zhuo W,Liu H

更新日期：2017-04-20 00:00:00

abstract：:The time variation of the radon equilibrium factor F was measured every four hours in the Nuclear Technology Laboratory of the Aristotle University of Thessaloniki (in northern Greece) during October 1998-April 1999. The time dependence of the mean weekly value of radon equilibrium factor F is relatively small. During...

journal_title：Radiation protection dosimetry

authors： Clouvas A,Xanthos S,Antonopoulos-Domis M

更新日期：2003-01-01 00:00:00

abstract：:This study aims to develop an Automatic Brain Dose Estimation (ABDE) methodology for head computed tomography examinations. The ABDE is to be applied first to an anthropomorphic Alderson phantom to obtain a Correction factor (Cf) between the ABDE and the direct absorbed brain dose using dosemeters positioned within th...

journal_title：Radiation protection dosimetry

authors： Gharbi S,Labidi S,Mars M

更新日期：2020-07-02 00:00:00

abstract：:The starting point of the Spanish experience in the study of High Background Radiation Areas is the development of a nationwide indoor radon survey carried out in 1988. This campaign, belonging to the first Spanish Radon Framework, consisted of approximately 2000 indoor radon measurements which represented a valuable ...

journal_title：Radiation protection dosimetry

authors： Sáinz C,Quindós LS,Fernández PL,Gómez J,Fuente I,Quindós L,Matarranz JL

更新日期：2007-01-01 00:00:00

abstract：:The material for this study comprised control protocols from 248 mammography screening facilities, prepared by physicists employed at 16 Regional Coordinating Centres and the results from the clinical evaluation of mammographic images in 248 facilities in Poland. All mammograms were evaluated independently by three ex...

journal_title：Radiation protection dosimetry

authors： Fabiszewska E,Grabska I,Jankowska K,Wesolowska E,Bulski W

更新日期：2011-09-01 00:00:00

abstract：:To determine the dose-equivalent of neutrons in an extended energy range, in the present work a multi-element thick gas electron multiplier-based microdosemeter made of PMMA (Perspex) walls of 10 mm in thickness is designed. Each cavity is filled with the propane-based tissue-equivalent (TE) gas simulating 1 µm of tis...

journal_title：Radiation protection dosimetry

authors： Moslehi A,Raisali G

更新日期：2017-11-01 00:00:00

abstract：:Current concerns focus on the high doses encountered in computed tomography (CT) examinations as they are extending towards younger and more radiosensitive patients. Previous work produced conversion coefficients for effective dose (E) from dose-length product (DLP) for four anatomical body regions applicable to any p...

journal_title：Radiation protection dosimetry

authors： Dougeni E,Chapple CL,Willis J,Panayiotakis G

更新日期：2011-09-01 00:00:00

abstract：:European Radiation Dosimetry Group e.V. (EURADOS) survey on individual monitoring data and dose assessment has been carried out for 550 foreigners returning home after being exposed in Japan to intakes of radionuclides (mainly (131)I, (132)I, (132)Te, (134)Cs and (137)Cs) as a consequence of the Fukushima Daiichi NPP ...

journal_title：Radiation protection dosimetry

authors： Lopez MA,Fojtik P,Franck D,Osko J,Gerstmann U,Scholl C,Lebacq AL,Breustedt B,Del Risco Norrlid L

更新日期：2016-09-01 00:00:00

abstract：:This paper presents a compartmental model for estimating the ingestion dose, due to 137Cs, arising from the consumption of marine fish in Hong Kong. 137Cs is one of the more important radionuclides released in routine liquid effluents discharged from the Guangdong Nuclear Power Station at Daya Bay, which began commerc...

journal_title：Radiation protection dosimetry

authors： Poon CB,Au SM

更新日期：2002-01-01 00:00:00

abstract：:The International Electrotechnical Commission introduced the concepts of exposure index (EI), target exposure index (EIT) and deviation index (DI) to manage and optimize patient dose in real time. In this study, we have proposed an appropriate method for setting the EIT based on the Korean national diagnostic referenc...

journal_title：Radiation protection dosimetry

authors： Park H,Yoon Y,Kim J,Kim J,Jeong H,Tanaka N,Morishita J

更新日期：2020-11-17 00:00:00

abstract：:Major contaminants from venting and hydrogen explosions at the Fukushima Daiichi nuclear reactors between 12 and 15 March 2011 were transported northwestward and deposited on soil and plants via precipitation. Surface soils and plant leaves were sampled at 64 sites in the Fukushima Prefecture. The highest concentratio...

journal_title：Radiation protection dosimetry

authors： Tazoe H,Hosoda M,Sorimachi A,Nakata A,Yoshida MA,Tokonami S,Yamada M

更新日期：2012-11-01 00:00:00

abstract：:Results of field tests with explosive dispersal of a radioactive substance (RaS) are presented. The paper deals with tests exploiting artificial obstacles as a continuation and expansion of the tests used in this study performed in free area described previously. The essential goal of the tests was to estimate the dis...

journal_title：Radiation protection dosimetry

authors： Rulik P,Prouza Z,Hovorka J,Beckova V,Cespirova I,Fronka A,Helebrant J,Hulka J,Kuca P,Skrkal J

更新日期：2013-04-01 00:00:00

abstract：:GSI is operating a facility for the production of rare isotopes. Nuclei are produced by fragmentation or fission of the impinging heavy ions with energies of approximately 1 GeV per nucleon. The major part of the primary beam and the produced nuclei is deposited in the components of the Fragment Separator (FRS) and ge...

journal_title：Radiation protection dosimetry

authors： Fehrenbacher G,Festag JG

更新日期：2004-01-01 00:00:00

abstract：:Comparative studies on the translocation and retention of intramuscularly (i.m.) injected thorium nitrate (234Th 46 ng + 232Th 5 microg per rat) in solutions of citrate, CaDTPA or citrate + CaDTPA in rats have been conducted. Results showed that only thorium in mixed-ligand solution was entirely translocated from the ...

journal_title：Radiation protection dosimetry

authors： Rencová J,Vlková A,Veselá G

更新日期：2003-01-01 00:00:00

abstract：:Various methodologies that aim at an analytic representation of the dielectric response function (DRF) of liquid water with emphasis on the Bethe ridge region are compared. The use of optical data is a common feature to all models presented providing an empirical ground for modelling the valence energy losses where ma...

journal_title：Radiation protection dosimetry

authors： Emfietzoglou D,Nikjoo H,Pathak A

更新日期：2006-01-01 00:00:00

abstract：:The main purpose of dose surveys has been to detect and bring down wide variation in radiation doses for any particular radiological examination and to avoid doses that are on higher side. Diagnostic reference levels (DRLs) have been used for over two decades as an aid in this objective. With very limited success that...

journal_title：Radiation protection dosimetry

authors： Rehani MM

更新日期：2015-07-01 00:00:00

abstract：:Albedo neutron dosemeter is the German official personal neutron dosemeter in mixed radiation fields where neutrons contribute to personal dose. In deep geological repositories for high-level nuclear waste, where neutrons can dominate the radiation field, it is of interest to investigate the performance of albedo neut...

journal_title：Radiation protection dosimetry

authors： Pang B,Becker F

更新日期：2017-04-28 00:00:00

abstract：:The indoor workplace environment was evaluated for exposure to radon and its decay products at two Universities in two metropolises of Japan. The mean radon concentrations in Nagoya University (NU) and Hokkaido University (HU) were 16.7 Bq m(-3) and 18.0 Bq m(-3), respectively. Activity median aerodynamic diameter (AM...

journal_title：Radiation protection dosimetry

authors： Rahman NM,Iida T,Yamazawa H,Yokoyama S,Moriizumi J,Saito F,Ito T

更新日期：2007-01-01 00:00:00

abstract：:A 'moving-target' method for characterising background in a counting measurement in which the instantaneous background count rate is a function of time, rather than being fixed, is proposed. This model treats the average Poisson mean in observation period P as coming from a gamma distribution with parameters αP and βP...

journal_title：Radiation protection dosimetry

authors： Klumpp J,Miller G,Brandl A

更新日期：2015-04-01 00:00:00

abstract：:The aim of the study was to investigate the contribution of secondary neutrons to the total dose inside the International Space Station (ISS). For this purpose solid-state nuclear track detector (SSNTD) stacks were used. Each stack consisted of three CR-39 sheets. The first and second sheets were separated by a Ti pla...

journal_title：Radiation protection dosimetry

authors： Pálfalvi JK,Akatov Y,Szabó J,Sajó-Bohus L,Eördögh I

更新日期：2004-01-01 00:00:00

abstract：:The objective of this work is to obtain fluence to effective dose conversion coefficients for neutron point sources, using the GEANT4 toolkit. These calculations aim to investigate the aspects of neutron transport in the human body through Monte Carlo simulation using the International Commission on Radiological Prote...

journal_title：Radiation protection dosimetry

authors： Ribeiro RM,Souza-Santos D

更新日期：2018-08-01 00:00:00

abstract：:Dose verification in heavy-ion beams using passive dosemeter systems, e.g. thermoluminescence dosemeters (TLDs), is crucial due to the changing efficiency of the dosemeters for different ion species and linear energy transfer (LET) values. This behaviour leads to a falsification of absorbed dose that can be significan...

journal_title：Radiation protection dosimetry

authors： Berger T,Hajek M,Summerer L,Fugger M,Vana N

更新日期：2006-01-01 00:00:00

abstract：:Image viewing and processing software in computed radiography manipulates image contrast in such a way that all relevant image features are rendered to an appropriate degree of visibility, and improves image quality using enhancement algorithms. The purpose of this study was to investigate procedures for the quality a...

journal_title：Radiation protection dosimetry

authors： Efstathopoulos EP,Benekos O,Molfetas M,Charou E,Kottou S,Argentos S,Kelekis NL

更新日期：2005-01-01 00:00:00

abstract：:The radioactivity of NORM was measured in ashes collected from a fuel-oil power plant in Cienfuegos, Cuba, using an HPGe gamma-ray spectrometer. The (226)Ra, (210)Pb, (40)K, (232)Th and (238)U activity concentrations reached 240, 77, 59, 70 and 15 Bq kg(-1), respectively. The potential radiological hazard of these res...

journal_title：Radiation protection dosimetry

authors： Alonso-Hernández CM,Bernal-Castillo J,Morera-Gómez Y,Guillen-Arruebarrena A,Cartas-Aguila HA,Acosta-Milián R

更新日期：2014-03-01 00:00:00

abstract：:The energy responses for the KLT-300(LiF:Mg,Cu,Na,Si, Korea), GR-200(LiF:Mg,Cu,P, China) and MCP-N(LiF:Mg,Cu,P, Poland) thermoluminescence(TL) pellets were studied for a photon radiation with energies from 1.25 MeV(60Co) to 21 MV (Microtron) to verify the usefulness of the calibration for the radiotherapy beams. The I...

journal_title：Radiation protection dosimetry

authors： Kim JL,Lee JI,Ji YH,Kim BH,Kim JS,Chang SY

更新日期：2006-01-01 00:00:00

abstract：:In this study a set of structures has been simulated to represent a range of clinically relevant breast cancer mammographic lesions including solid tumours and microcalcifications. All structures have been created using simple random-based mathematical functions and have been inserted into a subset of digital mammogra...

journal_title：Radiation protection dosimetry

authors： Ruschin M,Tingberg A,Båth M,Grahn A,Håkansson M,Hemdal B,Andersson I

更新日期：2005-01-01 00:00:00

abstract：:The effect of sample preparation on dentin electron paramagnetic resonance (EPR) spectra was investigated. The analysis was performed on dentin samples prepared by pure mechanical treatment or by an alkaline deproteination method. It was observed that (1) mechanical treatment induces both stable and transient signals,...

journal_title：Radiation protection dosimetry

authors： Fattibene P,Carosi A,De Coste V,Onori S

更新日期：2006-01-01 00:00:00

abstract：:The relation of radiation exposure (dose) with acute radiation syndrome (ARS) depends on many factors. In this overview, we reconsider (1) radiation exposure characteristics (e.g. radiation quality, fractionation, dose rate, partial/total body irradiation) and (2) biological processes (e.g. radiosensitivity, cell cycl...

journal_title：Radiation protection dosimetry

authors： Port M,Majewski M,Abend M

更新日期：2019-12-31 00:00:00