Abstract:
:A neutron spectrometry and dosimetry measurement system has been developed based on a different design of the divided regions for a sphere, with three position-sensitive counters. The characteristics of the measurement system have been investigated in the reference radiation fields of Am-Be and (252)Cf sources. When realistic input spectra are used for the unfolding, the overall deviations of the calculated results for four dosimetric quantities are less than +/-10%. The results of other input spectra are also discussed in this report.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Li T,Yang L,Ma J,Fang Ddoi
10.1093/rpd/ncl077subject
Has Abstractpub_date
2007-01-01 00:00:00pages
15-20issue
1eissn
0144-8420issn
1742-3406pii
ncl077journal_volume
123pub_type
杂志文章abstract::Radiation protection in medicine is becoming more and more important with increasing wider use of X-rays, documentation of effects besides the potential for long-term carcinogenic effects. With computed tomography (CT) likely to become sub-mSv in coming years, positron emission tomography (PET), single photon emission...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv071
更新日期:2015-07-01 00:00:00
abstract::This study compares the effective doses from a MIRD-type stylised model with those derived from the scaled-down version of the tomographic VIP-Man model for photon, electron, neutron and proton beams. The effective dose results from these two models show that they differ from each other within approximately 10% for co...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nci116
更新日期:2005-01-01 00:00:00
abstract::The image background resulting from imaged anatomy can be divided into those components that are meaningful to the observers, in the sense that they are recognised as separate structures, and those that are not. These latter components (reffered to as anatomical noise) can be removed using a method developed within th...
journal_title:Radiation protection dosimetry
pub_type: 临床试验,杂志文章
doi:10.1093/rpd/nch526
更新日期:2005-01-01 00:00:00
abstract::A newly developed thermoluminescence dosemeter system is presented that is suitable for application in fields where personal monitoring of a large number of users is required. The system presented here is intended to be used as the upcoming main dosemeter for whole body dosimetry at the dosimetry service of the MPA NR...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv478
更新日期:2016-09-01 00:00:00
abstract::Results of the long-term autopsy studies on plutonium body burden in the population of Ozyorsk situated in the vicinity of the radiochemical plant of the Mayak Production Association (Russia) have been presented. The data were obtained from radiochemical analysis of the soft tissue and bone samples collected at the au...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncm303
更新日期:2007-01-01 00:00:00
abstract::Tissue-equivalent proportional counters (TEPCs) have long been considered suitable candidate instruments for more accurate neutron monitors in nuclear power plants. It has also been recognised that the production of truly light-weight devices based on TEPCs requires further effort directed towards increasing their sen...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncq538
更新日期:2011-02-01 00:00:00
abstract::UVA wavelengths (320-400 nm) have been implicated in recent studies to contribute to melanoma induction and skin photoaging in humans and damage to plants. The use of smartphones in UVA observations is a way to supplement measurements made by traditional radiometric and spectroradiometric technology. Although the smar...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncu344
更新日期:2015-12-01 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
pub_type: 杂志文章
doi:10.1093/rpd/ncp303
更新日期:2010-08-01 00:00:00
abstract::Radon measurements, as do any measurements, include errors in their readings. The relative values of such errors depend principally on the measurement methods used, the radon concentration to be measured and the duration of the measurements. Typical exposure times for radon surveys using passive detectors [nuclear tra...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncs217
更新日期:2012-11-01 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
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006725
更新日期:2002-01-01 00:00:00
abstract::Proton beams (62 Mev) are used by the Laboratori Nazionali del Sud of the Italian Institute of Nuclear Physics to treat eye melanoma tumours at the therapeutic facility called CATANA. A cylindrical slim tissue-equivalent proportional counter (TEPC) of 2.7 mm external diameter has been used to compare the radiation qua...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nch111
更新日期:2004-01-01 00:00:00
abstract::The Federal Office for Radiation Protection performed a representative survey on the radiological quality of drinking water in Germany. The aim of this study was to determine regional variations of natural radionuclide concentrations and to estimate radiation exposures caused by drinking water consumption. The study i...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncq139
更新日期:2010-09-01 00:00:00
abstract::In this study, the total exposure due to signals within GSM 900, GSM 1800, CDMA-1900 and 3G-2100 frequency bands at 200 m from the foot of 120, 100 and 80 base station masts in the Nigerian cities of Lagos, Ibadan and Abuja, respectively, was assessed. A calibrated hand-held spectrum analyser was used to measure the l...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncaa203
更新日期:2020-12-31 00:00:00
abstract::In France, natural sources account for most of the population exposure to ionising radiation. This exposure varies widely with area. Radon and gamma-ray exposure data come from national measurement campaigns; cosmic doses were calculated from city altitude. These data were corrected for season of measurement, housing ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nch463
更新日期:2005-01-01 00:00:00
abstract::This paper presents the results of radon concentration measurements in drinking water from the municipal water supply system and private wells located in Baoji, China. The measurements were carried out on 69 samples. The mean values of tap water and well water were found to be 12 kBq m(-3) with a maximum of 18 kBq m(-...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncl048
更新日期:2006-01-01 00:00:00
abstract::The purpose of this study was to establish a dose estimation tool with Monte Carlo (MC) simulations. A 5-y-old paediatric anthropomorphic phantom was computed tomography (CT) scanned to create a voxelised phantom and used as an input for the abdominal cone-beam CT in a BEAMnrc/EGSnrc MC system. An X-ray tube model of ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncp257
更新日期:2010-03-01 00:00:00
abstract::Material activation assessment of a proposed accelerator-based boron neutron capture therapy facility was performed using the FLUKA Monte Carlo code to quantify the magnitude of the problem in terms of the isotope inventories, induced activities, and residual dose rates. Two simplified operation scenarios were conside...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncx289
更新日期:2018-08-01 00:00:00
abstract::A new method was developed to determine HT deposition velocity and to investigate how environmental factors affect the deposition processes including the diffusion into soil and the biochemical conversion by microorganisms to HTO in soil. This method, using a chamber and two tritium samplers, enables determination of ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006435
更新日期:2001-01-01 00:00:00
abstract::Full field digital mammography (FFDM) has advantages over screen-film mammography (SFM), but some important challenges remain. The first challenge is related to the specific characteristics of FFDM. It remains unclear, which shape and limiting values of the modulation transfer function have the most influence on the p...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nci729
更新日期:2005-01-01 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
pub_type: 杂志文章
doi:10.1093/rpd/nci627
更新日期:2006-01-01 00:00:00
abstract::Bonner sphere spectrometers (BSSs) are employed in neutron spectrometry and dosimetry since many years. Recent developments have seen the addition to a conventional BSS of one or more detectors (moderator plus thermal neutron counter) specifically designed to improve the overall response of the spectrometer to neutron...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nch187
更新日期:2004-01-01 00:00:00
abstract::The Alpha Magnetic Spectrometer (AMS01), a high-sensitivity particle spectrometer, was successfully flown for 10 d in June 1998 (STS91) in the orbit of the International Space Station (51.7 degrees, -380 km). A high-statistics dataset of galactic cosmic rays were measured as a function of geomagnetic latitude, includi...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nci071
更新日期:2005-01-01 00:00:00
abstract::Activities were introduced in Kashiwa city in the Tokyo metropolitan area to correspond to the elevated environmental radiation level after the disaster of the Fukushima Daiichi nuclear power plant. These were based on a strong cooperation between local governments and experts. Ambient dose rate and radioactivity of f...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv279
更新日期:2015-11-01 00:00:00
abstract::The central motto 'Radiation Protection Culture-A Global Challenge' of the fourth European IRPA Congress is discussed on the basis of the IRPA Guiding Principles Establishing a Radiation Protection Culture and the contributions presented in the plenary sessions of the conference. ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncu325
更新日期:2015-04-01 00:00:00
abstract::In this paper, the result of systematic measurement of the soil gas radon concentrations is discussed and the background values are defined along and around the Main Central Thrust (MCT) in Ukhimath region of Garhwal Himalaya, India. The Ukhimath region is being subjected to intense neotectonic activities like earthqu...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncw067
更新日期:2016-10-01 00:00:00
abstract::There are approximately 20 caves of limestone origin in Zonguldak (Turkey). In this study, the results of atmospheric radon measurements performed for two caves are presented. These caves, Gökgöl and Cehennemağzi, are open to tourism. Gökgöl Cave is the longer, at nearly 3,200 m in length. Cehenennemağzi is a pit-type...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nci326
更新日期:2006-01-01 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
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006143
更新日期:2003-01-01 00:00:00
abstract::Radiation protection (RP) in the use of medical cyclotrons involves many aspects both in the routine use and for the decommissioning of a site. Guidelines for site planning and installation, as well as for RP assessment, are given in international documents; however, the latter typically offer analytic methods of calc...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncw302
更新日期:2017-04-01 00:00:00
abstract::Stringent standards of hygiene must be applied in medical institutions, especially at operating blocks or during interventional radiology procedures. Medical equipment, including personal dosemeters that have to be worn by medical staff during such procedures, needs therefore to be sterilised. In this study, the effec...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv539
更新日期:2016-09-01 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
pub_type: 杂志文章
doi:10.1093/rpd/ncx019
更新日期:2017-11-01 00:00:00