Radiation exposure during paediatric CT in Sudan: CT dose, organ and effective doses.

abstract：:The use of geometrical phantoms for computed tomography (CT) dosimetry can incur errors in the calculation of effective dose due to the anatomically incorrect organ shapes and distributions, and unrepresentative body dimensions. A Monte Carlo program that makes use of an anatomically correct voxel phantom has been dev...

journal_title：Radiation protection dosimetry

authors： Castellano IA,Dance DR,Evans PM

更新日期：2005-01-01 00:00:00

abstract：:The use of solid tissue substitutes is a well-accepted and common practice in dosimetric studies and in the production of counting standards for radiological protection. However, only a few solid tissue substitutes simulating a particular body tissue with respect to a set of physical characteristics are commercially a...

journal_title：Radiation protection dosimetry

authors： Kinase S,Kimura M,Noguchi H,Yokoyama S

更新日期：2005-01-01 00:00:00

abstract：:The first proton linear accelerator for tumor therapy based on an actively scanned beam up to the energy of 150 MeV, is under development and construction by ENEA-Frascati, ISS and IFO, under the Italian TOP-IMPLART project. Protons up to the energy of 7 MeV are generated by a customized commercial injector operating ...

journal_title：Radiation protection dosimetry

authors： De Angelis C,Ampollini A,Basile E,Cisbani E,Della Monaca S,Ghio F,Montereali RM,Picardi L,Piccinini M,Placido C,Ronsivalle C,Soriani A,Strigari L,Trinca E,Vadrucci M

更新日期：2018-08-01 00:00:00

abstract：:The novel DIS-1 dosemeter developed by RADOS is based on ionisation chambers with so-called Direct Ion Storage (DIS). The dosemeter can measure Hp(10) and Hp(0.07) of photon and Hp(0.07) of beta irradiation. The characteristics of the commercially available DIS-1 dosemeter were studied at the Paul Scherrer Institute, ...

journal_title：Radiation protection dosimetry

authors： Boschung M,Fiechtner A,Wernli C

更新日期：2002-01-01 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：:The results of a study dealing with detection of neutrons in thermoluminescent (TL) photon radiation detectors, type TLD-500, based on an anion-defective corundum have been reported. The detection method uses the transformation of neutron radiation into gamma radiation arising when neutrons are captured by cadmium nuc...

journal_title：Radiation protection dosimetry

authors： Nikiforov SV,Kortov VS,Milman II

更新日期：2002-01-01 00:00:00

abstract：:The concentration and distribution of natural radionuclides in marble around Igbeti marble mines, Nigeria, were measured to evaluate the environmental radioactivity and health effects which the marble samples may posses. The concentration of radionuclides was determined using gamma-ray spectrometry with NaI (Tl) detec...

journal_title：Radiation protection dosimetry

authors： Ademola AK,Hammed OS,Adejumobi CA

更新日期：2008-01-01 00:00:00

abstract：:A range of techniques has been developed in conventional radiography for the chest, because of technical difficulties in imaging the wide variation of tissue densities. These techniques can differ significantly in tube potential selection, for scatter reduction and in application of manual or automatic exposure contro...

journal_title：Radiation protection dosimetry

authors： Doyle P,Martin CJ,Gentle D

更新日期：2005-01-01 00:00:00

abstract：:Protons are the dominant particles both in galactic cosmic rays and in solar particle events and, furthermore, proton irradiation becomes increasingly used in tumour treatment. It is believed that complex DNA damage is the determining factor for the consequent cellular response to radiation. DNA plasmid pBR322 was irr...

journal_title：Radiation protection dosimetry

authors： Pachnerová Brabcová K,Štěpán V,Karamitros M,Karabín M,Dostálek P,Incerti S,Davídková M,Sihver L

更新日期：2015-09-01 00:00:00

abstract：:Planning and preparation in advance for radiological emergencies can help to minimise potential public health and environmental threats if and when an actual emergency occurs. During the planning process, emergency response organisations think through how they would respond to each type of incident and the resources t...

journal_title：Radiation protection dosimetry

authors： Yusof MA,Ali HM

更新日期：2011-07-01 00:00:00

abstract：:An attempt towards an experimental set up which could provide the experimental data on correlation processes occurred simultaneously in two distanced DNA targets within a charged particle track is presented. A modified Jet Counter nanodosemeter was used in two experiments with carbon ions with mean energies of 52 and ...

journal_title：Radiation protection dosimetry

authors： Pietrzak M,Pszona S,Bantsar A

更新日期：2018-08-01 00:00:00

abstract：:The use of high-energy linear electron accelerators (LINACs) for medical cancer treatments is widespread on an international scale. The associated bremsstrahlung X rays may produce neutrons as a result of subsequent photonuclear reactions with the different materials constituting the accelerator head. The generated ne...

journal_title：Radiation protection dosimetry

authors： Fernández F,Domingo C,Amgarou K,Castelo J,Bouassoule T,Garcia MJ,Luguera E

更新日期：2007-01-01 00:00:00

abstract：:The National Institute of Standards and Technology developed a new set of test sources for testing of portal monitors against the ANSI standard N42.35-2004. The design and source specifications are provided in this work. ...

journal_title：Radiation protection dosimetry

authors： Lucas L,Pibida L,Unterweger M,Karam L

更新日期：2005-01-01 00:00:00

abstract：:The thermoluminescence (TL) characteristics of sodium chloride (NaCl), known as common salt, used for cooking purposes (iodised salt), have been studied in the present paper considering its usage as an 'accidental dosemeter' in the case of a nuclear fallout. TL characteristics of common salt have been examined under e...

journal_title：Radiation protection dosimetry

authors： Murthy KV,Pallavi SP,Rahul G,Patel YS,Sai Prasad AS,Elangovan D

更新日期：2006-01-01 00:00:00

abstract：:The aim of the study was to estimate organ dose rate reduction to a female anthropomorphic phantom, which simulated the cardiologist, during percutaneous coronary interventions (PCI) when the patient's arm support was covered with 0.4-mm lead foil. Organ dose rates were determined using five radiation detectors insert...

journal_title：Radiation protection dosimetry

authors： Fukuda A,Lin PP

更新日期：2020-06-24 00:00:00

abstract：:During the operation of research facilities at Research Centre Jülich, Germany, nuclear waste is stored in drums and other vessels in an interim storage building on-site, which has a concrete shielding at the side walls. Owing to the lack of a well-defined source, measured gamma spectra were unfolded to determine the ...

journal_title：Radiation protection dosimetry

authors： Heuel-Fabianek B,Hille R

更新日期：2005-01-01 00:00:00

abstract：:The design and dosimetry of a novel in vitro radon irradiation facility to investigate cytogenetic damage induced by radon and progeny is described. The system offers a 4pi geometry for uniform irradiation, proving a versatile and convenient facility for irradiation of whole blood cells in suspension or media. Doses c...

journal_title：Radiation protection dosimetry

authors： Hamza VZ,Kumar PR,Jeevanram RK,Santanam R,Danalaksmi B,Mohankumar MN

更新日期：2008-01-01 00:00:00

abstract：:In most countries of European Union, legislation requires the determination of the total skin dose received by patients during interventional procedures in order to prevent deterministic damages. Various dose indicators like dose-area product (DAP), cumulative dose (CD) and entrance dose at the patient plane (EFD) are...

journal_title：Radiation protection dosimetry

authors： Domienik J,Papierz S,Jankowski J,Peruga JZ,Werduch A,Religa W

更新日期：2008-01-01 00:00:00

abstract：:In order to check developed software tools, it was necessary to compare estimates of statistical characteristics of annual absorbed plutonium internal doses obtained by PANDORA and IMBA software with the same original data. The results were compared from dose calculations of five cases with different initial data on p...

journal_title：Radiation protection dosimetry

authors： Vostrotin VV,Birchall A,Zhdanov AV,Puncher M

更新日期：2017-11-01 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

authors： Janik M,Łoskiewicz J,Tokonami S,Kozak K,Mazur J,Ishikawa T

更新日期：2012-11-01 00:00:00

abstract：:We evaluated the performances of angiographic units equipped with a flat-panel (FP) detector and image intensifier (II) charge-coupled device (CCD) in the Interventional Cardiology (IC) Department. Entrance dose rate and dose per image, along with the dose at the II level were measured using 2 mm copper sheets to simu...

journal_title：Radiation protection dosimetry

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

更新日期：2005-01-01 00:00:00

abstract：:A new official albedo dosemeter based on thermoluminescent detectors has been introduced in 2015 by the individual monitoring service of the Helmholtz Zentrum München for monitoring persons who are exposed occupationally against photon and neutron radiation. To enhance the sensitivity for fast neutrons, a new badge wi...

journal_title：Radiation protection dosimetry

authors： Haninger T,Henniger J

更新日期：2016-09-01 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：: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：:The rapid proliferation of micro-computed tomography (micro-CT) scanners in preclinical small animal studies has created a need for a method on scanner performance evaluation and scan parameter optimisation. The purpose of this study was to investigate the performance of the scanner with a dedicated micro-CT phantom. ...

journal_title：Radiation protection dosimetry

authors： Eloot L,Buls N,Covens P,Willekens I,Lahoutte T,de Mey J

更新日期：2010-04-01 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：:Absorbed fraction (AF) and specific absorbed fraction (SAF) are crucial values for the calculation of radionuclide S-values and consequently for internal dose estimates. The formalism of the Medical Internal Radiation Dose (MIRD) committee of the Society of Nuclear Medicine (SNM) has been utilised as a standard in the...

journal_title：Radiation protection dosimetry

authors： Lee C,Park S,Lee JK

更新日期：2007-01-01 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：: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：:EURADOS working group on 'Internal Dosimetry (WG7)' represents a frame to develop activities in the field of internal exposures as coordinated actions on quality assurance (QA), research and training. The main tasks to carry out are the update of the IDEAS Guidelines as a reference document for the internal dosimetry ...

journal_title：Radiation protection dosimetry

authors： Lopez MA,Balásházy I,Bérard P,Blanchardon E,Breustedt B,Broggio D,Castellani CM,Franck D,Giussani A,Hurtgen C,James AC,Klein W,Kramer GH,Li WB,Marsh JW,Malatova I,Nosske D,Oeh U,Pan G,Puncher M,Peixoto Telles P,

更新日期：2011-03-01 00:00:00