Radiation doses in cerebral perfusion computed tomography: patient and phantom study.

abstract：:The W values of protons in liquid water were calculated for energies from 0.1 keV to 10 MeV using the continuous slowing down approximation as well as three models for the calculation of the differential ionisation cross-sections of water for protons published in recent years. The W values determined by means of the t...

journal_title：Radiation protection dosimetry

authors： Baek WY,Grosswendt B

更新日期：2007-01-01 00:00:00

abstract：:The feasibility of large-geometry Metal Oxide Semiconductor Field Effect Transistor (MOSFET) devices has been assessed for both active and passive neutron dosimetry and use in radiotherapy environments. Neutron sensitivity has been enhanced with the use of polymeric cement surrounding the gate region. Neutron activati...

journal_title：Radiation protection dosimetry

authors： Price RA,Benson C,Joyce MJ,Kestell DJ,Silvie J

更新日期：2004-01-01 00:00:00

abstract：:A secondary standard ionisation chamber for photon radiation for measuring an ionisation current, which is directly proportional to the conventionally true value of the ambient dose equivalent, H*(10), was optimised. The chamber was developed in the Austrian Research Centers Seibersdorf and is used successfully worldw...

journal_title：Radiation protection dosimetry

authors： Ankerhold U

更新日期：2006-01-01 00:00:00

abstract：:The thermoluminescence (TL) of LiF:Mg,Ti has been studied using a high resolution CCD spectrophotometer, which simultaneously measures the emission intensity and the emission spectrum as a function of sample temperature. Computerised deconvolution was used to resolve the emission spectrum into individual Gaussian band...

journal_title：Radiation protection dosimetry

authors： Biderman S,Horowitz Y,Oster L

更新日期：2002-01-01 00:00:00

abstract：:Ionising radiation exposure of cells might induce the perturbation of cell functions and, in particular, the activation or inhibition of several important pathways. This perturbation can cause the deregulation of both intra- and extra-cellular signalling cascades (such as the inflammatory pathway) and alter not only t...

journal_title：Radiation protection dosimetry

authors： Babini G,Ugolini M,Morini J,Baiocco G,Mariotti L,de Fatis PT,Liotta M,Ottolenghi A

更新日期：2015-09-01 00:00:00

abstract：:Much attention has been devoted in the past to monitor changes of mobile lipid (ML) (1)H MRS signals in spectra of tumour cells. The purpose of this work is to exploit ML signals to provide information on cell metabolism after irradiation, comparing tumour cells characterised by different radiosensitivity and relating...

journal_title：Radiation protection dosimetry

authors： Grande S,Giovannini C,Luciani AM,Palma A,Rosi A,Sapora O,Viti V,Guidoni L

更新日期：2006-01-01 00:00:00

abstract：:A secondary standard for ambient dose equivalent, H*(10), is necessary for the dissemination of the unit Sievert (Sv), but there is no such standard commercially available currently. Furthermore, the measurement of H*(10) instead of calculating H*(10) from air kerma and conversion coefficients is needed for unknown ra...

journal_title：Radiation protection dosimetry

authors： Bairlein K,Behnke B,Hupe O

更新日期：2020-06-24 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

authors： Infantino A,Cicoria G,Lucconi G,Pancaldi D,Vichi S,Zagni F,Mostacci D,Marengo M

更新日期：2017-04-01 00:00:00

abstract：:Habit surveys were carried out around four licensed nuclear sites to identify people who collect foodstuffs from the wild (so-called 'free foods'). In total, around 800 collectors were readily identified, most of whom collected more than one free food. The data indicated that estimates of higher than average doses cou...

journal_title：Radiation protection dosimetry

authors： Green N,Wilkins BT,Hammond DJ,Davidson MF,Richmond S,Brooker S

更新日期：2001-01-01 00:00:00

abstract：:This study aims to contribute to the construction of a scenario regarding patient radiation exposure in Brazilian interventional radiology, aiming to provide data for the future drafting of specific legislation on interventional radiology because there is currently a lack of safety regulations for haemodynamics servic...

journal_title：Radiation protection dosimetry

authors： Navarro VC,Navarro MV,Maia AF

更新日期：2013-04-01 00:00:00

abstract：:Dental cone beam computed tomography (CBCT), also known as digital volumetric tomography was developed in the late 1990s and is now increasingly available in clinical practice. It can provide high resolution cross-sectional images of teeth and the maxillofacial region with applications in all branches of dentistry. As...

journal_title：Radiation protection dosimetry

authors： Horner K,Jacobs R,Schulze R

更新日期：2013-02-01 00:00:00

abstract：:The manipulation of a wide variety of unsealed sources in Nuclear Medicine results in a significant risk of internal exposure of the workers. 131I should be highlighted among the most frequently used radionuclides because of its large application for diagnosis and therapy of thyroid diseases. The increasing use of rad...

journal_title：Radiation protection dosimetry

authors： Lucena EA,Rebelo AM,Araújo F,Sousa WO,Dantas AL,Dantas BM,Corbo R

更新日期：2007-01-01 00:00:00

abstract：:With the introduction of continuous-energy heavy charged particle transport in MCNP5, the need for tracking charged particles in a magnetic field becomes increasingly important. Two methods for including magnetic field effects on charged particles are included in the proton transport version of the code. The first tec...

journal_title：Radiation protection dosimetry

authors： Bul JS,Hughes HG,Walstrom PL,Zumbro JD,Mokhov NV

更新日期：2005-01-01 00:00:00

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：:During the past decades, many specialised networks have formed to meet specific radioecological objectives, whether regional or sectorial (purpose-oriented). Regional networks deal with an array of radioecological issues related to their territories. Examples include the South Pacific network of radioecologists, and t...

journal_title：Radiation protection dosimetry

authors： Bréchignac F,Alexakhin R,Bollhöfer A,Frogg KE,Hardeman F,Higley K,Hinton TG,Kapustka LA,Kuhne W,Leonard K,Masson O,Nanba K,Smith G,Smith K,Strand P,Vandenhove H,Yankovich T,Yoshida S

更新日期：2017-04-01 00:00:00

abstract：:A passively safe small reactor for a distributed energy system, PSRD, is an integral type of light-water reactor with a thermal output of 100 or 300 MW aimed to be used for supplying district heat, electricity to small grids, and so on. Candidate locations for the PSRD as a distributed energy source are on-ground, dee...

journal_title：Radiation protection dosimetry

authors： Odano N,Ishida T

更新日期：2005-01-01 00:00:00

abstract：:This paper presents an efficient algorithm for estimating the unknown emission rate of radionuclides in the atmosphere following a nuclear accident. The algorithm is based on assimilation of gamma dose rate measured data in a Lagrangian atmospheric dispersion model. Such models are used in the framework of nuclear eme...

journal_title：Radiation protection dosimetry

authors： Tsiouri V,Kovalets I,Andronopoulos S,Bartzis JG

更新日期：2012-01-01 00:00:00

abstract：:Over the past few years, the Institute for Radiation Protection and Nuclear Safety (IRSN) has been studying a personal electronic neutron dosemeter and an ambient electronic neutron dosemeter based on experimental microdosimetric principles using low pressure proportional counters. The results obtained in 2000 and in ...

journal_title：Radiation protection dosimetry

authors： Ménard S,Chau Q,Lahaye T

更新日期：2002-01-01 00:00:00

abstract：:Since December 2006, approximately 3800 clinical chest tomosynthesis examinations have been performed at our department at Sahlgrenska University Hospital. A subset of the examinations has been included in studies of the detectability of pulmonary nodules, using computed tomography (CT) as the gold standard. Visibilit...

journal_title：Radiation protection dosimetry

authors： Johnsson AA,Vikgren J,Svalkvist A,Zachrisson S,Flinck A,Boijsen M,Kheddache S,Månsson LG,Båth M

更新日期：2010-04-01 00:00:00

abstract：:The main purpose of dose surveys has been to detect and bring down wide variation in radiation doses for any particular radiological examination and to avoid doses that are on higher side. Diagnostic reference levels (DRLs) have been used for over two decades as an aid in this objective. With very limited success that...

journal_title：Radiation protection dosimetry

authors： Rehani MM

更新日期：2015-07-01 00:00:00

abstract：:Work is presented on the development of a retrospective/fortuitous accident dosimetry service using optically stimulated luminescence of resistors found in mobile phones to determine the doses of radiation to members of the public following a radiological accident or terrorist incident. The system is described and dis...

journal_title：Radiation protection dosimetry

authors： Smith RW,Eakins JS,Hager LG,Rothkamm K,Tanner RJ

更新日期：2015-04-01 00:00:00

abstract：:A Chinese head phantom (CHP) is constructed for evaluating the specific absorption rate (SAR) by the wireless transceivers. The dimensions of the head phantom are within 4 % difference compared with the 95th percentile data from the China's standard. The shell's thickness and the configuration of the pinna are the sam...

journal_title：Radiation protection dosimetry

authors： Ma Y,Wang Y,Shao Q,Li C,Wu T

更新日期：2014-03-01 00:00:00

abstract：:In vitro dose-response calibration curves for (60)Co gamma rays have been established for unstable chromosome aberrations in human peripheral blood lymphocytes. The observed dose-response data were fitted to a linear quadratic model. The calibration curve parameters were used to estimate the equivalent whole-body dose...

journal_title：Radiation protection dosimetry

authors： Senthamizhchelvan S,Pant GS,Rath GK,Julka PK,Nair O,Joshi RC,Malhotra A,Pandey RM

更新日期：2007-01-01 00:00:00

abstract：:An improvement in the clinical results obtained using total body irradiation (TBI) with photon beams requires precise TBI treatment planning, reproducible irradiation, precise in vivo dosimetry, accurate documentation and careful evaluation. In vivo dosimetry using LiF Harshaw TLD-100 chips was used during the TBI tre...

journal_title：Radiation protection dosimetry

authors： Palkosková P,Hlavata H,Dvorák P,Novotný J,Novotný J Jr

更新日期：2002-01-01 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：: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：:The goal of this study was to compare dose estimates from electron paramagnetic resonance (EPR) dosimetry with teeth and cytogenetic dosimetry with blood lymphocytes for 30 victims of radiation accidents. The whole-body exposures estimated by tooth enamel EPR dosimetry were ranging from 0.01 to 9.3 Gy. Study group com...

journal_title：Radiation protection dosimetry

authors： Khvostunov IK,Ivannikov AI,Skvortsov VG,Nugis VY,Golub EV

更新日期：2015-03-01 00:00:00

abstract：:The microdosimetric one hit detector model was applied to calculate the dose response, energy response and relative thermoluminescence (TL) efficiency, eta, of high sensitive LiF:Mg,Cu,P and Al(2)O(3):C detectors after their irradiations by X rays, gamma rays, beta electrons and heavy charged particles (HCP). Microdos...

journal_title：Radiation protection dosimetry

authors： Olko P,Bilski P,Budzanowski M,Czopyk L,Swakon J,Waligorski MP

更新日期：2006-01-01 00:00:00

abstract：:In Austria a comprehensive study on radiation exposure in waterworks was conducted. The aim of this study was to evaluate the risks for the affected employees. On the basis of geographical, geological and hydrological aspects, 21 waterworks were selected. A total of 85 passive short-term measurements and measurements ...

journal_title：Radiation protection dosimetry

authors： Michael S,Andreas B,Claudia S,Fabian R,Ringer W,Josef MF

更新日期：2014-07-01 00:00:00

abstract：:Dose estimation in interventional neuroradiology can be useful to limit skin radiation injuries. The purpose of this study was to evaluate the role of entrance skin dose (ESD) maps in planning exposure condition optimisation. Thirteen cerebral angiography and five embolisation procedures were monitored, measuring ESD,...

journal_title：Radiation protection dosimetry

authors： Rampado O,Ropolo R

更新日期：2005-01-01 00:00:00