Photoneutron and capture gamma dose equivalent for different room and maze layouts in radiation therapy.

abstract：:In an effort to understand the basic mechanism of the action of charged particles in solid radiation dosimeters, we extend our Monte-Carlo code (MC4) to condensed media (liquids/solids) and present new track-structure calculations for electrons and protons. Modeling the energy dissipation process is based on a model d...

journal_title：Radiation protection dosimetry

authors： Emfietzoglou D,Papamichael G,Karava K,Androulidakis I,Pathak A,Phillips GW,Moscovitch M,Kostarelos K

更新日期：2006-01-01 00:00:00

abstract：:In the neonatal intensive care units (NICU), premature new-borns may be exposed to important doses. Because of their increased radiosensitivity and longer life expectancy, dose optimisation is of importance. The present study aimed at evaluating the dose of the most common radiographs in the Belgian NICU. Entrance sur...

journal_title：Radiation protection dosimetry

authors： Dabin J,Struelens L,Vanhavere F

更新日期：2014-01-01 00:00:00

abstract：:The effect of sample preparation on dentin electron paramagnetic resonance (EPR) spectra was investigated. The analysis was performed on dentin samples prepared by pure mechanical treatment or by an alkaline deproteination method. It was observed that (1) mechanical treatment induces both stable and transient signals,...

journal_title：Radiation protection dosimetry

authors： Fattibene P,Carosi A,De Coste V,Onori S

更新日期：2006-01-01 00:00:00

abstract：:In this work, indoor radon radioactivity concentration levels have been measured in dwellings of Turkey within the frame of the National Radon Monitoring Programme. The (222)Rn concentrations were measured with time-integrating passive nuclear etched track detectors in 7293 dwellings in 153 residential units of 81 pro...

journal_title：Radiation protection dosimetry

authors： Celebi N,Ataksor B,Taskın H,Bingoldag NA

更新日期：2015-12-01 00:00:00

abstract：:A monolithic silicon telescope, consisting of a DeltaE and an E stage-detector ( approximately 1.9 microm and 500 microm thick, respectively), was coupled to a polyethylene converter in order to investigate the feasibility of a solid state microdosimeter with respect to the field-funnelling effect. This work discusses...

journal_title：Radiation protection dosimetry

authors： Agosteo S,Colautti P,Fazzi A,Moro D,Pola A

更新日期：2006-01-01 00:00:00

abstract：:During the operation of high-energy accelerators, the interaction of radiation with matter can lead to the activation of the machine components and of the surrounding infrastructures. As a result of maintenance operation and during decommissioning of the installation, considerable amounts of radioactive waste are evac...

journal_title：Radiation protection dosimetry

authors： Ulrici L,Magistris M

更新日期：2009-11-01 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 106 866 dwellings measured for radon in Finland so far by Radiation and Nuclear Safety Authority include 5560 apartments. The radon concentrations in ground-contact apartments are similar to those in low-rise residential buildings located in the same area. The values in apartments above the first floor do not sign...

journal_title：Radiation protection dosimetry

authors： Valmari T,Arvela H,Reisbacka H

更新日期：2012-11-01 00:00:00

abstract：:In 2011, national diagnostic reference levels (DRLs) were proposed for pain management fluoroscopic procedures in Belgium. The primary goal of this work is to compare the dose area product values (DAP) recorded at the Saint-Luc University Hospital to these DRLs. From 2012 to 2015, 7664 interventional pain management p...

journal_title：Radiation protection dosimetry

authors： Hustinx N,Steyaert A,le Polain de Waroux B,Forget P

更新日期：2018-05-01 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

authors： Koarashi J,Amano H,Andoh M,Iida T,Koma T

更新日期：2001-01-01 00:00:00

abstract：:Natural radionuclide contents of 226Ra, 228Ra and (40)K were studied for inter-tidal sediments collected from selected locations off the745 km long Balochistan Coast using HPGe detector based gamma-spectrometry system. The sampling zone extends from the beaches of Sonmiani (near Karachi metropolis) through Jiwani (clo...

journal_title：Radiation protection dosimetry

authors： Akram M,Qureshi RM,Ahmad N,Solaija TJ

更新日期：2007-01-01 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：:Data collection and its analysis in the field of nuclear safety is an important task in the sense that it powers the improvement of safety as well as reliability of the plant. Thus, occupational exposure data analysis is presented to measure the safety or reliability of radiation protection of a given facility. It als...

journal_title：Radiation protection dosimetry

authors： Datta D,Singh S,Johnson BE,Kushwaha HS

更新日期：2008-01-01 00:00:00

abstract：:The present study concerns measurements of radon emissions from soil carried out during March to July 2013 at Chite fault in Aizawl district, Mizoram, India. In this study, continuous radon monitoring in soil was done by using LR-115 type II nuclear track detector (Kodak-Pathe, France make), and the exposed films were...

journal_title：Radiation protection dosimetry

authors： Singh S,Jaishi H,Tiwari RP,Tiwari RC

更新日期：2014-11-01 00:00:00

abstract：:To test the blood tritium level as an estimate of free water tritium (FWT) and organically bound tritium (OBT) in human soft tissues, a tritiated amino acid mixture (TAA) and tritiated water (HTO) were injected or orally administered to mice. Relatively high tritium retention in the blood was found after TAA injection...

journal_title：Radiation protection dosimetry

authors： Saito M

更新日期：2003-01-01 00:00:00

abstract：:Flat-panel X-ray detectors for fluoroscopy represent a modern imaging equipment that is being implemented in paediatric cardiac catheterisation laboratories. Infants and children represent a group of patients with a high radiosensitivity. A survey of 273 (126 diagnostic and 147 therapeutic) paediatric catheterisations...

journal_title：Radiation protection dosimetry

authors： Dragusin O,Gewillig M,Desmet W,Smans K,Struelens L,Bosmans H

更新日期：2008-01-01 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：:Lead has recently been recognised as a source of environmental pollution, including the lead used for radiation shielding in radiotherapy. The bremsstrahlung radiation caused by the interaction between the electron beam and lead may reduce the accuracy of radiotherapy. To avoid the use of lead, a new material composed...

journal_title：Radiation protection dosimetry

authors： Yue K,Luo W,Dong X,Wang C,Wu G,Jiang M,Zha Y

更新日期：2009-02-01 00:00:00

abstract：:One encouraging way, at present, to put the investigation of ionisation-yield formation in sub-cellular structures or, at least, in nanometric volumes of liquid water on an experimental basis is the use of highly sophisticated counters filled with gases at low operating pressure to simulate target volumes a few nm in ...

journal_title：Radiation protection dosimetry

authors： Grosswendt B

更新日期：2002-01-01 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

authors： Xu XG,Chao TC,Bozkurt A

更新日期：2005-01-01 00:00:00

abstract：:Thermoluminescene (TL) and mechanoluminescence (ML) properties of gamma-irradiated Dy activated potassium and magnesium mixed sulphate have been studied. (K2Mg2:Dy) (SO4)3 samples having different concentrations of Dy were prepared by solid-state diffusion method. Two distinct peaks, the first approximately 130 degree...

journal_title：Radiation protection dosimetry

authors： Kher RS,Panigrahi AK,Dhoble SJ,Khokhar MS

更新日期：2006-01-01 00:00:00

abstract：:The Fukushima Daiichi Nuclear Power Plant (FDNPP) accident has resulted in the deposition of radioactive contamination of soils mainly by (134)Cs and (137)Cs. The contaminated areas are of a great concern since external radiation may lead to significant long-term doses to humans and animals. External dose rate above g...

journal_title：Radiation protection dosimetry

authors： Mishra S,Sahoo SK,Arae H,Sorimachi A,Hosoda M,Tokonami S,Ishikawa T

更新日期：2015-11-01 00:00:00

abstract：:Accident dosimetry aims to evaluate the unplanned radiation doses delivered to individuals through one of the objects exist in the area of the accident. The gamma dose response of free radicals generated in irradiated aspartame tablets and its usability for emergency dosimetry was studied. EPR spectra of unirradiated ...

journal_title：Radiation protection dosimetry

authors： Maghraby A,Salama E

更新日期：2010-06-01 00:00:00

abstract：:Monte Carlo simulations were performed to evaluate treatment doses with wide spread used radionuclides 133Xe, 99mTc and 81mKr. These different radionuclides are used in perfusion or ventilation examinations in nuclear medicine and as indicators for cardiovascular and pulmonary diseases. The objective of this work was ...

journal_title：Radiation protection dosimetry

authors： Jovanovic Z,Krstic D,Nikezic D,Ros JMG,Ferrari P

更新日期：2018-03-01 00:00:00

abstract：:The paper presents the first results of an investigation on optical absorption (OA), thermally and infrared stimulated luminescence (TL and IRSL) of the Pinacate plagioclase (labradorite). The OA spectra reveal two bands with maxima at 1.0 and 3.2 eV connected with absorption of the Fe3+ and Fe2+ and IR absorption at ...

journal_title：Radiation protection dosimetry

authors： Chernov V,Paz-Moreno F,Piters TM,Barboza-Flores M

更新日期：2006-01-01 00:00:00

abstract：:The variation of the response of the instruments with the neutron energy has to be determined in well-characterized monoenergetic neutron fields. The AMANDE facility will deliver such neutron fields between 2 keV and 20 MeV in an experimental hall designed with metallic walls for neutron scattering minimisation. The n...

journal_title：Radiation protection dosimetry

authors： Gressier V,Guerre-Chaley JF,Lacoste V,Lebreton L,Pelcot G,Pochat JL,Bolognese-Milstajn T,Champion D

更新日期：2004-01-01 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：:Between 1952 and 1957, the UK exploded a total of 12 nuclear devices in Australia, and also conducted about 600 'minor trials' that did not involve a nuclear explosion. Over 16 000 Australian servicemen and civilians were involved in the UK tests in Australia. This paper reports the estimation of doses that the Austra...

journal_title：Radiation protection dosimetry

authors： Crouch P,Robotham FR,Williams G,Wise K

更新日期：2009-09-01 00:00:00

abstract：:The physics foundations of hadronic interactions as implemented in most Monte Carlo codes are presented together with a few practical examples. The description of the relevant physics is presented schematically split into the major steps in order to stress the different approaches required for the full understanding o...

journal_title：Radiation protection dosimetry

authors： Ferrari A,Sala PR

更新日期：2002-01-01 00:00:00

abstract：:To measure dose distribution for X- and gamma rays simply and accurately, a tissue-equivalent thermoluminescent (TL) sheet-type dosemeter and reader system were developed. The TL sheet is composed of LiF:Mg,Cu,P and ETFE polymer, and the thickness is 0.2 mm. For the TL reading, a square heating plate, 20 cm on each si...

journal_title：Radiation protection dosimetry

authors： Nariyama N,Konnai A,Ohnishi S,Odano N,Yamaji A,Ozasa N,Ishikawa Y

更新日期：2006-01-01 00:00:00