Shielding design calculations for beam dump facility of KOMAC.

abstract：:Interventional cardiology procedures are usually associated with high patient doses and even deterministic radiation effects may occur. Expensive digital flat panels are preferably used to lower doses, and Athens General Hospital has recently installed one. However, this study shows that it is the cardiologists' pract...

journal_title：Radiation protection dosimetry

authors： Mavrikou I,Kottou S,Tsapaki V,Neofotistou V

更新日期：2008-01-01 00:00:00

abstract：:Estimating organ absorbed doses in consideration of person-specific parameters is important for radiation protection in diagnostic nuclear medicine. This study proposes a straightforward method for estimating the organ dose that reflects a specific organ mass by scaling the reference organ dose using the inverse ratio...

journal_title：Radiation protection dosimetry

authors： Manabe K,Koyama S

更新日期：2020-07-24 00:00:00

abstract：:During the 7th European Conference on Protection Against Radon at Home and at Work held in the autumn of 2013 in Prague, the second intercomparison of measuring instruments for radon and its short-lived decay products and the first intercomparison of radon/thoron gas discriminative passive detectors in mix field of ra...

journal_title：Radiation protection dosimetry

authors： Jílek K,Hýža M,Kotík L,Thomas J,Tomášek L

更新日期：2014-07-01 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：:Bi-directional signaling involved in radiation-induced bystander effect (RIBE) between irradiated carcinoma cells and their surrounding non-irradiated normal cells is relevant to radiation cancer therapy. Using the SPICE-NIRS microbeam, we delivered 500 protons to A549-GFP lung carcinoma cells, stably expressing H2B-G...

journal_title：Radiation protection dosimetry

authors： Kobayashi A,Autsavapromporn N,Ahmad TAFT,Oikawa M,Homma-Takeda S,Furusawa Y,Wang J,Konishi T

更新日期：2019-05-01 00:00:00

abstract：:In 2011, a serious radiation accident occurred in Stamboliyski, Bulgaria, in an industrial sterilisation facility using very-high-activity (60)Co sources. For the five persons accidentally exposed, biological dosimetry based on dicentric analysis was performed in Sofia and in Paris, where the patients were transferred...

journal_title：Radiation protection dosimetry

authors： Grégoire E,Hadjidekova V,Hristova R,Gruel G,Roch-Lefevre S,Voisin P,Staynova A,Deleva S,Ainsbury EA,Lloyd DC,Barquinero JF

更新日期：2013-08-01 00:00:00

abstract：:A comparison is presented of particular methods of exposure in the first year after the Chernobyl disaster and ten years later. This comparison shows that the population exposure due to the presence of radiocaesium in the environment results from the presence of caesium contained in the soil, which provides 68% of the...

journal_title：Radiation protection dosimetry

authors： Zalewski M,Kapala J,Tomczak M

更新日期：2002-01-01 00:00:00

abstract：:Occupational radiation exposure is a hazard that should be avoided or at least minimised. This study aimed to evaluate the radiation exposure of nuclear medicine department employees monitored during the 1991-2007 period, and to investigate the relationship between the annual effective doses of the personnel and the n...

journal_title：Radiation protection dosimetry

authors： Piwowarska-Bilska H,Birkenfeld B,Listewnik M,Zorga P

更新日期：2010-08-01 00:00:00

abstract：:Measurements were made according to IEEE standard 644-1994 at a height of 1 m above floor level. It is concluded that none of the measurements exceeded the ACGIH threshold limit value. Among all control rooms the highest measured density amount is 0.69 μT in the control room of Ozgol substation and the lowest is 0.2 μ...

journal_title：Radiation protection dosimetry

authors： Fard MS,Nasiri P,Monazzam MR

更新日期：2011-06-01 00:00:00

abstract：:A Bayesian unfolding has been applied to ionisation distributions due to 5.4 MeV alpha particles in a 20-nm site obtained using Monte Carlo simulations, taking into account different detection efficiency conditions. The ideal case of a target volume with uniform efficiency has been investigated to study the dependence...

journal_title：Radiation protection dosimetry

authors： De Nardo L,Lesimple M,Canella S,Grosswendt B

更新日期：2004-01-01 00:00:00

abstract：:(238)U, (232)Th, (222)Rn and (220)Rn concentrations were measured inside various Moroccan black soap samples widely used by the Moroccan population in traditional baths (Hammans) by using both CR-39 and LR-115 type II solid state nuclear track detectors. The measured (238)U, (232)Th, (222)Rn and (220)Rn concentrations...

journal_title：Radiation protection dosimetry

authors： Misdaq MA,Outeqablit K

更新日期：2010-12-01 00:00:00

abstract：:The natural radionuclide (226Ra, 232Th and 40K) contents of building materials commonly used in South Korea have been determined by a gamma ray spectroscopy system using a high purity germanium detector. The radon exhalation rates and emanation coefficients of building materials have also been studied. The average con...

journal_title：Radiation protection dosimetry

authors： Lee SC,Kim CK,Lee DM,Kang HD

更新日期：2001-01-01 00:00:00

abstract：:The purpose of this study was to investigate radiation doses in cerebral perfusion computed tomography (CT) examination. As a part of routine patient monitoring, data were collected on patients in terms of the skin dose and CT dose index (CTDIvol) and dose-length product (DLP) values. For the estimation of the dose to...

journal_title：Radiation protection dosimetry

authors： Arandjic D,Bonutti F,Biasizzo E,Ciraj-Bjelac O,Floreani M,Giustizieri M,Iaiza F,Inkoom S,Tommasini G,Padovani R

更新日期：2013-05-01 00:00:00

abstract：:Various radionuclides are used in nuclear medicine in different diagnostic and therapeutic procedures. Recently, interest has grown in therapeutic agents for some interesting applications in nuclear medicine. Internal dose models and methods in use for many years are well established, and can give radiation doses to s...

journal_title：Radiation protection dosimetry

authors： Stabin MG

更新日期：2003-01-01 00:00:00

abstract：:The yield of chromosome aberrations is not only dependent on dose but also on radiation quality, with high linear energy transfer (LET) typically having a greater biological effectiveness per unit dose than those of low-LET radiation. Differences in radiation track structure and cell morphology can also lead to quanti...

journal_title：Radiation protection dosimetry

authors： Hill MA

更新日期：2015-09-01 00:00:00

abstract：:Values of the new protection quantity 'Local Skin Dose' LSD, introduced by the International Commission on Radiological Protection (ICRP) Publication 116, were calculated for 134 β- or β+ emitting radionuclides, using the Monte Carlo code MCNP6. Two types of source geometry are considered: a point source and disc-type...

journal_title：Radiation protection dosimetry

authors： Bourgois L,Ménard S,Comte N

更新日期：2017-11-01 00:00:00

abstract：:The counting efficiency and detection limit of an in vivo thyroid 131I monitoring system using an imaging plate (IP) were estimated using an anthropomorphic thyroid neck phantom. The counting efficiency of the IP system was approximately constant for thyroid volumes between 11.7 and 20 ml and neck diameters between 10...

journal_title：Radiation protection dosimetry

authors： Hirota M,Saze T,Nishizawa K

更新日期：2002-01-01 00:00:00

abstract：:The activity concentration of natural and anthropogenic radionuclides was determined in different vegetable samples, and foods derived from animal origin, from different locations in the four cities of Southern Tunisia, where large-scale phosphate industries are operating. The aim of the studies was to establish a bas...

journal_title：Radiation protection dosimetry

authors： Machraoui S,Mohan MP,Naregundi K,Labidi S

更新日期：2019-08-01 00:00:00

abstract：:Biokinetic models are the scientific underpinning of internal dosimetry and depend, ultimately, for their scientific validation on comparisons with human bioassay data. Three significant plutonium/americium bioassay databases, known to the authors, are described: (1) Sellafield, (2) Los Alamos and (3) the United State...

journal_title：Radiation protection dosimetry

authors： Miller G,Riddell AE,Filipy R,Bertelli L,Little T,Guilmette R

更新日期：2007-01-01 00:00:00

abstract：:In this study, radioactivity levels of 35 different samples of 11 commonly used building materials in Samsun were measured by using a gamma spectrometry system. The analysis carried out with the high purity Germanium gamma spectrometry system. Radioactivity concentrations of (226)Ra, (232)Th and (40)K range from 6 to ...

journal_title：Radiation protection dosimetry

authors： Tufan MÇ,Disci T

更新日期：2013-01-01 00:00:00

abstract：:A theoretical study was carried out to re-evaluate the integrity of the biological shielding of (137)Cs brachytherapy unit at the Korle Bu Teaching Hospital, Ghana, and the results were verified by measurement of the dose rates at selected locations. The primary objective was to determine the current state of protecti...

journal_title：Radiation protection dosimetry

authors： Arwui CC,Schandorf C,Nani K,Darko EO,Deatanyah P

更新日期：2010-06-01 00:00:00

abstract：:Indoor radon concentrations generally vary with season. Radon gas enters buildings from beneath due to a small air pressure difference between the inside of a house and outdoors. This underpressure which draws soil gas including radon into the house depends on the difference between the indoor and outdoor temperatures...

journal_title：Radiation protection dosimetry

authors： Daraktchieva Z

更新日期：2017-06-01 00:00:00

abstract：:Radiation shielding assessments may underestimate the expected dose if some isotopes at trace level are not considered in the isotopes inventory of the shielded radioactive materials. Indeed, information about traces is not often available. Nevertheless, the activation of some minor isotopic traces may significantly c...

journal_title：Radiation protection dosimetry

authors： Bonin A,Tsilanizara A

更新日期：2017-06-01 00:00:00

abstract：:A multipurpose anthropomorphic neck phantom was designed and fabricated for use in medical applications. The designed neck phantom is composed of seven elliptic cylindrical slices with a semi-major axis of 14 cm and a semi-minor axis of 12.5 cm, each having the thickness of 2 cm. The thyroid gland, bony part of the ne...

journal_title：Radiation protection dosimetry

authors： Mehdizadeh Naderi S,Sina S,Karimipoorfard M,Lotfalizadeh F,Entezarmahdi M,Moradi H,Faghihi R

更新日期：2016-03-01 00:00:00

abstract：:238U, 234U and 235U were determined in tap water from municipal water pipes that drew their supply from surface water or ground water in various locations in Poland. Average activity concentrations of 238U, 234U and 235U in tap water from surface water were 9.6 +/- 7.1, 12.8 +/- 9.7 and 0.41 +/- 0.31 Bq m(-3), respect...

journal_title：Radiation protection dosimetry

authors： Pietrzak-Flis Z,Kaminska I,Chrzanowski E

更新日期：2005-01-01 00:00:00

abstract：:The ESOREX project was initiated in 1997 by the EC DG TREN and it was executed by the BfS/Germany in close co-operation with the State Office for Nuclear Safety/Czech Republic). It consists of surveys on radiation monitoring and exposure carried out in the 30 European states. The study provides comparable descriptions...

journal_title：Radiation protection dosimetry

authors： Frasch G,Petrová K

更新日期：2007-01-01 00:00:00

abstract：:The personnel dosimetry department of the Greek Atomic Energy Commission (GAEC) assures the individual monitoring of almost 8000 occupationally exposed workers. Thermoluminescence dosimetry systems will replace the existing photographic dosimetry system for the individual monitoring with the joint support of IAEA and ...

journal_title：Radiation protection dosimetry

authors： Carinou E,Drikos G,Hourdakis C,Hyvönen H,Kamenopoulou V

更新日期：2001-01-01 00:00:00

abstract：:The use of Monte Carlo track structure is a choice method in biophysical modelling and calculations. To precisely model 3D and 4D tracks, the cross section for the ionisation by an incoming ion, double differential in the outgoing electron energy and angle, is required. However, the double differential cross section c...

journal_title：Radiation protection dosimetry

authors： MacGibbon JH,Emerson S,Liamsuwan T,Nikjoo H

更新日期：2011-02-01 00:00:00

abstract：:At least 10% of inhabitants in the Czech Republic are supplied with water from private sources (private wells, boreholes). With the increasing cost of water, the number of people using their own sources of drinking water will be likely to increase. According to the Decree of the State Office for Nuclear Safety about t...

journal_title：Radiation protection dosimetry

authors： Otahal P,Merta J,Burian I

更新日期：2014-07-01 00:00:00

abstract：:Shin Kori unit 3 of Korea Hydro and Nuclear Power Co. is the pressurized water reactor of advanced power reactor 1400 (APR1400) in the Republic of Korea. A hypothetical accident was assumed for Shin Kori unit 3 to perform the time-dependent dose calculations along with the release rates of radionuclides to the environ...

journal_title：Radiation protection dosimetry

authors： Uddin GMB,Kim J

更新日期：2020-09-16 00:00:00