Multileaf shielding design against neutrons produced by medical linear accelerators.

abstract：:Luminescence and optical features of chemical vapour deposition (CVD) diamond have been studied in view of the potential application of this material in ionising radiation dosimetry field. For this purpose, thermally stimulated luminescence (TSL) and optically stimulated luminescence (OSL) techniques have been used. A...

journal_title：Radiation protection dosimetry

authors： Benabdesselam M,Iacconi P,Trinkler L,Berzina B,Butler JE

更新日期：2006-01-01 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：:Recent development of CaF2:Cu (the most sensitive material for radiation dosimetry) exhibiting a TL glow peak around 270 degrees C similar to that of CaF2:Mn has made it attractive to study the influence of heating rate on the response of CaF2 based TLDs. Influence of heating rate on CaF2:Mn (known to reduce the respo...

journal_title：Radiation protection dosimetry

authors： Pradhan AS

更新日期：2002-01-01 00:00:00

abstract：:With the availability of the National Institute of Standards and Technology (NIST) Radon Emanation Standard with a content of approximately 5000 Bq of 226Ra, it is possible to build a flow through a practical radon test chamber. A standard glove box with four gloves and a transfer port is used. Air is pumped through a...

journal_title：Radiation protection dosimetry

authors： Kotrappa P,Stieff F

更新日期：2008-01-01 00:00:00

abstract：:The connection between recorded volumetric CT dose index (CTDI vol) and determined mean fetal dose (Df) was examined from metal-oxide-semiconductor field-effect transistor dose measurements on an anthropomorphic female phantom in four stages of pregnancy in a 64-slice CT scanner. Automated tube current modulation kept...

journal_title：Radiation protection dosimetry

authors： Kelaranta A,Kaasalainen T,Seuri R,Toroi P,Kortesniemi M

更新日期：2015-07-01 00:00:00

abstract：:The purpose of the study was to evaluate the dose performance of a flat-panel (FP) and an image intensifier (II) charge coupled device (CCD) digital fluoroscopy X-ray systems newly installed in an Interventional Cardiology (IC) department. Filter entrance dose rate, detector dose rate (during fluoroscopy) and filter e...

journal_title：Radiation protection dosimetry

authors： Tsapaki V,Kottou S,Kollaros N,Dafnomili P,Kyriakidis Z,Neofotistou V

更新日期：2004-01-01 00:00:00

abstract：:The main objective of this comparative study was to evaluate the national quality assurance program for X-ray diagnostic radiology in Syrian governmental hospitals. Two periods were covered in this study, the first period was from 1986 to 1998 (52 hospitals and 149 X-ray machines were considered) and the second period...

journal_title：Radiation protection dosimetry

authors： Kharita MH,Khedr MS,Wannus KM

更新日期：2008-01-01 00:00:00

abstract：:Doses received by Cuban population due to exposure to the environmental sources of radiation were studied for their evaluation. Estimations of doses from the different components of the total dose were obtained and published. From the results obtained estimations of total doses to Cuban population from environmental r...

journal_title：Radiation protection dosimetry

authors： Tomás Zerquera J,Prendes Alonso M,Díaz Rizo O

更新日期：2007-01-01 00:00:00

abstract：:BNFL have over 25 years experience of designing nuclear plant for the whole-fuel cycle. In the UK, a Nuclear Decommissioning Authority (NDA) is to be set up to ensure that Britain's nuclear legacy is cleaned up safely, securely and cost effectively. The resulting challenges and opportunities for shielding design will ...

journal_title：Radiation protection dosimetry

authors： Jeffries G,Cooper A,Hobson J

更新日期：2005-01-01 00:00:00

abstract：:To aid in protecting patients from unnecessary exposures and to reduce radiation burdens to the public, a system for tracking a patient's medical exposure history and related radiation doses would be a useful tool. A patient-centred exposure registry, the Patient Exposure Registry (PER), is a mechanism that provides t...

journal_title：Radiation protection dosimetry

authors： Chen J,Moir D,Cornett J

更新日期：2010-12-01 00:00:00

abstract：:Radon is one of the noble gases, which are chemically inert and do not make any reactants under normal conditions. In this experiment we demonstrated an enigmatic reaction between radon and fluorine when a corona discharge is used as a promoter. Distinctive changes in radon concentrations were caused by the discharge ...

journal_title：Radiation protection dosimetry

authors： Yamada Y,Koizumi A,Ishikawa K,Hishinuma Y,Tatenuma K

更新日期：2005-01-01 00:00:00

abstract：:Entrance surface doses (ESDs) were measured for the most common types of X ray procedures, such as chest PA, lumber spine AP, lumber spine lateral, skull AP, skull lateral and pelvis AP in four major hospitals of Dhaka, the capital city of Bangladesh. Organ/tissue doses for 29 organs/tissues and effective doses for th...

journal_title：Radiation protection dosimetry

authors： Begum Z

更新日期：2001-01-01 00:00:00

abstract：:The aim of this work is to calculate the absorbed dose to matter due to neutrons in the 5-150 MeV energy range. Materials involved in the calculations are Al2O3, CaSO4 and CaS, which may be used as dosemeters and have already been studied for their luminescent properties. The absorbed dose is assumed to be mainly due ...

journal_title：Radiation protection dosimetry

authors： Wrobel F,Benabdesselam M,Iacconi P,Lapraz D

更新日期：2004-01-01 00:00:00

abstract：:An oil and gas production facility in the western desert of Egypt was investigated for possible radiation risks due to the routine operation. Radium-226, Radium-228 and Potassium-40 were assessed in the soil samples collected from the adjacent soakaway pond. The average 226Ra, 228Ra and 40K activity concentrations wer...

journal_title：Radiation protection dosimetry

authors： Ebaid YY,Hassan Y,Elshemey WM

更新日期：2020-08-28 00:00:00

abstract：:A device able to trap a liquid droplet in a host liquid in a metastable (superheated) state was developed for a better understanding of the operational principles and for an extension of the application of superheated drop detectors (SDDs). Droplets of trans-2-butene in a metastable state were exposed to Am-Be neutron...

journal_title：Radiation protection dosimetry

authors： Sawamura T,Joji T,Homma A

更新日期：2003-01-01 00:00:00

abstract：:Radioactive liquid wastes of low-medium activity level are generated in radio immune assay (RIA) laboratories, which are also potentially infectious because of the pathogens from patient blood. The most common way of managing these wastes consists of a temporal storage, for partial radioactivity decay, followed by man...

journal_title：Radiation protection dosimetry

authors： Sancho M,Arnal JM,Villaescusa JI,Campayo JM,Verdú G

更新日期：2005-01-01 00:00:00

abstract：:To evaluate the environmental contamination and contributory external exposure after the accident at the Fukushima Nuclear Power Plant (FNPP), the concentrations of artificial radionuclides in soil samples from each area were analysed by gamma spectrometry. Six artificial radionuclides ((131)I, (134)Cs, (137)Cs, (129m...

journal_title：Radiation protection dosimetry

authors： Taira Y,Hayashida N,Yamashita S,Kudo T,Matsuda N,Takahashi J,Gutevitc A,Kazlovsky A,Takamura N

更新日期：2012-09-01 00:00:00

abstract：:According to the worldwide reports, industrial radiography is one of the highest risk radiation practices due to handling high activity sources. Therefore, an optimization of protection along with appropriate investigation level and/or dose constraint is required to achieve appropriate radiological safety. This resear...

journal_title：Radiation protection dosimetry

authors： Hosseini Pooya SM,Dashtipour MR

更新日期：2018-10-01 00:00:00

abstract：:The importance of (220)Rn (thoron) progeny for human exposure has been widely recognised in the past decades. Since no stable equilibrium factor was found between indoor thoron and its progeny, and the concentration of thoron progeny varies with time, it is necessary to develop detectors for long-term measurement that...

journal_title：Radiation protection dosimetry

authors： Bi L,Tschiersch J,Meisenberg O,Wielunski M,Li JL,Shang B

更新日期：2011-05-01 00:00:00

abstract：:The frequencies and effective doses for the most common X-ray diagnostic examinations in Ukraine were assessed in the frame of the European Commission (EC) Study on European Population Doses from Medical Exposure (Dose Datamed 2). The average effective doses for all radiographic procedures were estimated using the ODS...

journal_title：Radiation protection dosimetry

authors： Stadnyk L,Shalopa O,Nosyk O

更新日期：2015-07-01 00:00:00

abstract：:In radiotherapy involving thermal and epithermal neutrons, the knowledge of dose distributions, with separation of the contribution of each secondary radiation component, is of utmost importance. Layers of Fricke-Xylenol-Orange-infused gel dosemeters give the possibility of achieving such requirements because, owing t...

journal_title：Radiation protection dosimetry

authors： Gambarini G,Carrara M,Gay S,Tomatis S

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：:Swedish hemangioma patients were treated in infancy mainly by external application of radium-226 starting from 1920. This work analysed the radiation risk among 17,158 women with a total of 678 breast cancer incidence cases with models of carcinogenesis and empirical excess relative risk models. Models incorporating e...

journal_title：Radiation protection dosimetry

authors： Eidemüller M,Holmberg E,Jacob P,Lundell M,Karlsson P

更新日期：2011-02-01 00:00:00

abstract：:A theoretical evaluation of the properties and processes affecting the radon transport from subsurface soil into buildings is presented in this work. The solution of the relevant transport equation is obtained using the explicit finite difference method (EFDM). Results are compared with analytical steady-state solutio...

journal_title：Radiation protection dosimetry

authors： Savović S,Djordjevich A,Ristić G

更新日期：2012-06-01 00:00:00

abstract：:Diamond is a material with extreme physical properties. Its radiation hardness, chemical inertness and tissue equivalence qualify it as an ideal material for radiation dosimetry. In the present work, the optically stimulated luminescence (OSL) and thermoluminescence (TL) characteristics of a 10 microm thick CVD diamon...

journal_title：Radiation protection dosimetry

authors： Preciado-Flores S,Schreck M,Meléndrez R,Chernov V,Bernal R,Cruz-Vázquez C,Cruz-Zaragoza E,Barboza-Flores M

更新日期：2006-01-01 00:00:00

abstract：:In this paper the effect of treatment room and maze layout on the photoneutron and capture gamma dose equivalent in the maze was studied. MCNPX Monte Carlo (MC) code was used to simulate the Varian 2100 C/D Clinac 18 MV and four different room layouts. Two analytical methods, Wu-McGinley and McGinley, were used for do...

journal_title：Radiation protection dosimetry

authors： Mesbahi A,Ghiasi H,Mahdavi SR

更新日期：2010-08-01 00:00:00

abstract：:The first commercial spent nuclear fuel reprocessing plant at Rokkasho in Japan discharged 129I from actual spent nuclear fuel into the atmosphere during its test operation from 2006 to 2008. Previously, we measured monthly atmospheric concentrations of gaseous and particulate 129I and atmospheric deposition rates of ...

journal_title：Radiation protection dosimetry

authors： Abe K,Hasegawa H,Akata N,Kakiuchi H,Chiang JH,Suwa H,Hisamatsu S

更新日期：2019-10-01 00:00:00

abstract：:Between 2001 and 2003 a 3.2 kJ dense plasma focus (DPF) device has been built at the Montecuccolino Laboratory of the Department of Energy, Nuclear and Environmental Control Engineering (DIENCA) of the University of Bologna. A DPF is a pulsed device in which deuterium nuclear fusion reactions can be obtained through t...

journal_title：Radiation protection dosimetry

authors： Frignani M,Mostacci D,Rocchi F,Sumini M

更新日期：2005-01-01 00:00:00

abstract：:The natural radionuclide contents of some concrete building blocks randomly sampled in the city of Ibadan have been determined using NaI(Tl) gamma ray spectrometry. The radionuclides 226Ra, 232Th and 40K were determined with city mean specific activities 47 +/- 21 Bq.kg-1, 52 +/- 21 Bq.kg-1, and 352 +/- 222 Bq.kg-1, r...

journal_title：Radiation protection dosimetry

authors： Farai IP,Ademola JA

更新日期：2001-01-01 00:00:00

abstract：:Monitoring of radon in underground mines is important in order to assess the radiological hazards to occupational workers. Radon concentration levels in three underground lignite mines (Tunçbilek, Omerler and Eynez) of Turkey were obtained in this study. For this reason, atmospheric radon level measurements were carri...

journal_title：Radiation protection dosimetry

authors： Cile S,Altinsoy N,Celebi N

更新日期：2010-01-01 00:00:00