Head calibration phantoms for actinides: measurements and simulations.

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：:The study is aimed at optimising the glow curve structure of CaSO4:Dy phosphor for dosimetric purpose and also to understand the observed changes owing to thermal treatment in the thermoluminescence (TL) sensitivity and glow curve structure. The reversible changes in the intensities of the lower temperature satellite ...

journal_title：Radiation protection dosimetry

authors： Bakshi AK,Pradhan AS,Tyagi AK,Kher RK,Bhatt BC

更新日期：2006-01-01 00:00:00

abstract：:Amongst the dosemeters offered by the Health Protection Agency (HPA) Personal Dosimetry Service are finger rings, which use the Harshaw™ DXTRAD element. This paper describes restricted-type testing carried out by HPA on the previously untried combination of the LiF:Mg,Cu,P material and a thicker filter (42 mg cm(-2))....

journal_title：Radiation protection dosimetry

authors： Baker ST,Roberts GH,Gilvin PJ

更新日期：2011-03-01 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：: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：:Within the framework of a joint research project on natural radiation exposure and its health effects in Cameroon from 2014 to 2017, the Institute of Geological and Mining Research and the Hirosaki University worked together to carry out natural radiation survey in mining and ore bearing regions of Cameroon. Air kerma...

journal_title：Radiation protection dosimetry

authors： Tokonami S,Hosoda M,Joseph Emmanuel NNI,Akata N,Flore TSY,Modibo OB,Samuel BG,Didier TSS

更新日期：2019-10-01 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 W values of protons in water vapour were measured for energies from 1 keV to 100 keV with uncertainties lower than 1%. To study the energy and phase dependence of W values, the W values of protons in water vapour and liquid water were calculated for energies from 0.1 keV and 10 MeV and then compared to the experim...

journal_title：Radiation protection dosimetry

authors： Willems G,Back WY,Grosswendt B

更新日期：2002-01-01 00:00:00

abstract：:Radon-222 concentrations in groundwater from 10 local government areas (LGAs) of Ogun State were measured using AlphaGUARD radon detector and AquaKIT. The mean activity concentration of radon ranged from 1.23 ± 0.21 to 12.68 ± 18.11 Bq.l-1 corresponding to geometric means (GMs) of 1.22- 6.39 Bq.l-1. The radon concentr...

journal_title：Radiation protection dosimetry

authors： Fatoki OO,Ademola JA

更新日期：2021-02-03 00:00:00

abstract：:In reviewing the tissue effects of low-dose radiation (1) absorbed dose to tissue is replaced by the sum of energy deposited with track events in cell-equivalent tissue micromasses, i.e. with microdose hits, in the number of exposed micromasses and (2) induced cell damage and adaptive protection are related to microdo...

journal_title：Radiation protection dosimetry

authors： Feinendegen LE

更新日期：2003-01-01 00:00:00

abstract：:The current revision of the Swiss Radiological Protection Ordinance aims to bring Swiss legislation in line with new international standards. In future, the control of radon exposure in dwellings will be based on a reference level of 300 Bq m(-3). Since this value is exceeded in >10 % of the buildings so far investiga...

journal_title：Radiation protection dosimetry

authors： Palacios Gruson M,Barazza F,Murith C,Ryf S

更新日期：2015-04-01 00:00:00

abstract：:Concentrations of beryllium-7 ((7)Be), lead-210 ((210)Pb) and caesium-137 ((137)Cs) were measured at two sites in the city of Belgrade (Serbia). One monitoring site was located in the central city area with heavy traffic and the other within the Institute of Nuclear Sciences Vinca, in the suburbs. Presented data cover...

journal_title：Radiation protection dosimetry

authors： Todorovic D,Popovic D,Nikolic J,Ajtic J

更新日期：2010-12-01 00:00:00

abstract：:To estimate the absorbed dose in normal organs and inflamed tissue following i.v. administration of [201Tl](III)-DTPA-HIgG by using biodistribution data in inflamation bearing rats was attempted. The percentages of injected dose per gram of each organ were calculated. The medical internal radiation dose formulation was...

journal_title：Radiation protection dosimetry

authors： Khorrami Moghaddam A,Reza Jalilian A,Hayati V,Shanehsazzadeh S

更新日期：2010-10-01 00:00:00

abstract：:A novel single cell irradiation system using carbon nanotube (CNT) based field emission technology is proposed. The system can produce electron microbeam at a large range of pulsation frequencies and dose rates with energy between 20 and 60 keV. Different from any existing single beam microbeam device, the CNT-based s...

journal_title：Radiation protection dosimetry

authors： Chang S,Zhang J,Bordelon D,Schreiber E,Cox A,Zhou O

更新日期：2006-01-01 00:00:00

abstract：:The article summarizes the most recent results from the cohorts of uranium miners, particularly the risks at low exposures and the risk models with modifying effects of exposure rate, age and time since exposure, which are used for the calculation of lifetime risks (LRs). The excess relative risks per unit exposure (E...

journal_title：Radiation protection dosimetry

authors： Tomasek L

更新日期：2020-11-27 00:00:00

abstract：:A module for proton track structure simulation in liquid water was implemented in the biophysical model PARTRAC. Simulated tracks of energy deposition events from the radiation under investigation were superimposed on a higher-order DNA target model describing the whole genome inside a human cell. The parameters contr...

journal_title：Radiation protection dosimetry

authors： Friedland W,Bernhardt P,Jacob P,Paretzke HG,Dingfelder M

更新日期：2002-01-01 00:00:00

abstract：:Production of double strand breaks (DSBs) and double-stranded DNA fragments after irradiation with high energy nitrogen ions was simulated with stochastic track generation and a high-order chromatin structure (HOCS) model representing a segment of interphase chromosome. The non-random distribution of DNA fragments is ...

journal_title：Radiation protection dosimetry

authors： Khvostunov IK,Andreev SG,Eidelman Y

更新日期：2002-01-01 00:00:00

abstract：:In this work, we analyse the dose to 5034 patients (20 137 images) who underwent mammographic examinations with a full-field digital mammography (FFDM) system over a 2-y period. The information relevant to this study has been extracted from the image Digital Imaging and Communications in Medicine (DICOM) headers. Entr...

journal_title：Radiation protection dosimetry

authors： Morán P,Chevalier M,Ten JI,Fernández Soto JM,Vañó E

更新日期：2005-01-01 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：:Potassium-40 constitutes the main natural source of potassium present in the body, which influences the effective dose received by people. With the aim of assessing the contribution of this component to the doses received by the Cuban population, a study intended to assess the doses was developed. For this purpose, a ...

journal_title：Radiation protection dosimetry

authors： Zerquera JT,Alonso MP,Bejerano GL,López JO,Rodríguez NA

更新日期：2003-01-01 00:00:00

abstract：:The purpose of this work is to compare different methods for shielding calculation in computed tomography (CT). The BIR-IPEM (British Institute of Radiology and Institute of Physics in Engineering in Medicine) and NCRP (National Council on Radiation Protection) method were used for shielding thickness calculation. Sca...

journal_title：Radiation protection dosimetry

authors： Ciraj-Bjelac O,Arandjic D,Kosutic D

更新日期：2011-09-01 00:00:00

abstract：:Mammography dose increases with compressed breast thickness (CBT), but few studies have examined other correlates of dose. The purpose of this study was to evaluate the relation between factors such as race, age, body mass index (BMI), CBT, and menopausal status and mammography screening dose, measured for 509 women i...

journal_title：Radiation protection dosimetry

authors： Schubauer-Berigan MK,Frey GD,Baron L,Hoel DG

更新日期：2002-01-01 00:00:00

abstract：:Currently, teletherapy machines of cobalt and caesium are being replaced by linear accelerators. The maximum photon energy in these machines can vary from 4 to 25 MeV, and one of the great advantages of these equipments is that they do not have a radioactive source incorporated. High-energy (E > 10 MV) medical linear ...

journal_title：Radiation protection dosimetry

authors： Falcão RC,Facure A,Silva AX

更新日期：2007-01-01 00:00:00

abstract：:Radiation qualities were characterised and validated at the fully automated X-ray calibration facility of the Individual Monitoring Service at Helmholtz Zentrum München by using half-value layer and Hp(10) dosimetry approaches specified in the updated ISO 4037:2019 standard. As the ISO 4037 contains a somewhat vague d...

journal_title：Radiation protection dosimetry

authors： Bandalo V,Greiter MB,Brönner J,Hoedlmoser H

更新日期：2019-12-31 00:00:00

abstract：:International Electrotechnical Commission (IEC) established the framework for the use of exposure index (EI) for evaluating the exposure conditions with various digital systems. In this study, we investigated the feasibility of EI, as per the IEC, by comparing the EIs obtained through manual calculated and that displa...

journal_title：Radiation protection dosimetry

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

更新日期：2020-07-17 00:00:00

abstract：:The new recommendation issued by the International Commission on Radiological Protection (ICRP) introducing a 20-mSv annual dose limit for the eye lens stimulated an interesting debate among the radiation protection community. In the present work the problem of estimating Hp(3) for neutron realistic workplace spectra ...

journal_title：Radiation protection dosimetry

authors： Ferrari P,Gualdrini G,Tanner R,Fantuzzi E

更新日期：2014-10-01 00:00:00

abstract：:Two phantoms for a performance evaluation of cone-beam computed tomography (CBCT) were developed and their efficiency was tested. The first phantom, for low-contrast resolution, consisted of an acrylic circular plate with three 0.5-1.0 mm diameter rods. These rods enable the user to visually evaluate the limit of obse...

journal_title：Radiation protection dosimetry

authors： Bamba J,Ishida H,Araki K

更新日期：2019-05-01 00:00:00

abstract：:The DIS-1 dosemeter from the Finnish company RADOS is an innovative kind of passive electronic dosemeter for photon and beta radiation. This study examines the 'long-term' linear response behaviour, the calibration and readout accuracy with large samples of 'used' DIS-1 dosemeters especially in the low-dose region, wh...

journal_title：Radiation protection dosimetry

authors： Fuchs H,Stähler S,Dittmar M

更新日期：2008-01-01 00:00:00

abstract：:New paradigms for parallel programming have been devised to simplify software development on multi-core processors and many-core graphical processing units (GPU). Despite their obvious benefits, the parallelisation of existing computer programs is not an easy task. In this work, the use of the Open Multiprocessing (Op...

journal_title：Radiation protection dosimetry

authors： Örtenberg A,Magnusson M,Sandborg M,Alm Carlsson G,Malusek A

更新日期：2016-06-01 00:00:00

abstract：:CsBr phosphor ceramics doped with different luminescence centres such as In2O3, Eu2O3, EuCl3, SmCl3, TbCl3, GdCl3 or NdCl3 as the candidate for a new optically-stimulable phosphor for medical X-ray imaging sensor were prepared using a conventional ceramic fabrication process. It was found that X-ray-irradiated Eu-dope...

journal_title：Radiation protection dosimetry

authors： Kurata N,Kubota N,Takei Y,Nanto H

更新日期：2006-01-01 00:00:00