Entrance surface, organ and effective doses for some of the patients undergoing different types of X ray procedures in Bangladesh.

abstract：:Boron neutron capture therapy is known to be an effective radiation cancer therapy that requires neutron irradiation. A neutron field generated by an accelerator-based neutron source has various energy spectra, and it is necessary to evaluate the neutron spectrum in the treatment field. However, the method used to mea...

journal_title：Radiation protection dosimetry

authors： Tamaki S,Kusaka S,Sato F,Murata I

更新日期：2018-08-01 00:00:00

abstract：:Recent development of CaF2:Cu (the most sensitive material for radiation dosimetry) exhibiting a TL glow peak around 270 degrees C similar to that of CaF2:Mn has made it attractive to study the influence of heating rate on the response of CaF2 based TLDs. Influence of heating rate on CaF2:Mn (known to reduce the respo...

journal_title：Radiation protection dosimetry

authors： Pradhan AS

更新日期：2002-01-01 00:00:00

abstract：:The purpose of the research is to develop an integrated technique for determining the effective dose (E) of external and internal exposure by different sources of ionizing radiation. The proposing technique for determining the total effective dose is based on three methods of calculation. The first one is multiplying ...

journal_title：Radiation protection dosimetry

authors： Kudryashev VA,Kim DS

更新日期：2019-12-31 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：:Measurements of (239+240)Pu and (238)Pu were carried out on marine biota as well as on sediments from the fringing reefs area extending towards north and south (Flamingo Bay) of PortSudan harbour. The analyses were performed using radiochemical separation and alpha spectrometry. The range of the activity concentration...

journal_title：Radiation protection dosimetry

authors： Sirelkhatim DA,Sam AK,Hassona RK

更新日期：2008-01-01 00:00:00

abstract：:Three-dimensional Monte Carlo shielding analyses are conducted on the ITER Neutral Beam Injection (NBI) duct for the nuclear and bremsstrahlung radiation. The detailed distribution is evaluated about the nuclear heating rate and surface heat load of the NBI duct wall by the neutron and photon transport calculation. Th...

journal_title：Radiation protection dosimetry

authors： Sato S,Iida H,Yamauchi M,Nishitani T

更新日期：2005-01-01 00:00:00

abstract：:Conversion coefficients are a substantial vehicle in practical radiation protection to determine the dose (rate) of a given radiation field. According to ICRU report 57, their values shall be obtained by means of spectrometry. This is, however, a time-consuming complicated procedure that cannot be performed by all dos...

journal_title：Radiation protection dosimetry

authors： Behnke B,Hupe O

更新日期：2017-04-15 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：:Monitoring of radon in underground mines is important in order to assess the radiological hazards to occupational workers. Radon concentration levels in three underground lignite mines (Tunçbilek, Omerler and Eynez) of Turkey were obtained in this study. For this reason, atmospheric radon level measurements were carri...

journal_title：Radiation protection dosimetry

authors： Cile S,Altinsoy N,Celebi N

更新日期：2010-01-01 00:00:00

abstract：:Estimation of the effective inhalation dose of short half-life radon progeny requires the quantification of radon equilibrium equivalent activity concentrations (EEC, Ceq). The aim of the present study is to develop new methodology that focuses on spot measurements to determine EEC from single gross alpha counts and d...

journal_title：Radiation protection dosimetry

authors： Sakoda A,Ishimori Y,Kanzaki N,Tanaka H

更新日期：2020-11-13 00:00:00

abstract：:Radon is one of the noble gases, which are chemically inert and do not make any reactants under normal conditions. In this experiment we demonstrated an enigmatic reaction between radon and fluorine when a corona discharge is used as a promoter. Distinctive changes in radon concentrations were caused by the discharge ...

journal_title：Radiation protection dosimetry

authors： Yamada Y,Koizumi A,Ishikawa K,Hishinuma Y,Tatenuma K

更新日期：2005-01-01 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：:BNFL have over 25 years experience of designing nuclear plant for the whole-fuel cycle. In the UK, a Nuclear Decommissioning Authority (NDA) is to be set up to ensure that Britain's nuclear legacy is cleaned up safely, securely and cost effectively. The resulting challenges and opportunities for shielding design will ...

journal_title：Radiation protection dosimetry

authors： Jeffries G,Cooper A,Hobson J

更新日期：2005-01-01 00:00:00

abstract：:Fluorescent nuclear track detectors (FNTDs) as criticality dosimeters for both neutrons and gamma are further characterized in terms of angular dependence and quick dose assessment. The power spectrum integral depth profiles obtained from stacks of fluorescent images acquired within FNTDs exposed to a broad spectrum n...

journal_title：Radiation protection dosimetry

authors： Harrison J,Moreno B,Van Hoey O,Mihailescu LC,Vanhavere F,Million M,Fomenko V,Akselrod M

更新日期：2018-08-01 00:00:00

abstract：:Elevated levels of natural background radiation due to scattered patches of monazite sand around the beaches of Mangalore, India, have been reported earlier. A comparative study of gamma dose rates was performed in both normal background and high natural background radiation areas around Mangalore using different type...

journal_title：Radiation protection dosimetry

authors： Al-Azmi D,Kumara S,Mohan MP,Karunakara N

更新日期：2019-10-01 00:00:00

abstract：:In projection radiography, two types of digital imaging systems are currently available, computed radiography (CR) and direct radiography (DR): a difference between them can be stated in terms of dose and image quality. In the Radiology Emergency Department of our hospital, a flat-panel DR equipment (Siemens Axiom Ari...

journal_title：Radiation protection dosimetry

authors： Compagnone G,Pagan L,Baleni MC,Calzolaio FL,Barozzi L,Bergamini C

更新日期：2008-01-01 00:00:00

abstract：:The internal dosimetry computer program internal dose assessment by computer (IDAC) for calculations of absorbed doses to organs and tissues as well as effective doses to patients from examinations with radiopharmaceuticals has been developed. The new version, IDAC2.0, incorporates the International Commission on Radi...

journal_title：Radiation protection dosimetry

authors： Andersson M,Johansson L,Minarik D,Mattsson S,Leide-Svegborn S

更新日期：2014-12-01 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：: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：:The powerful white neutron spectrum from Gelina is used for the investigation of gamma ray production cross sections in the reaction 52Cr(n,n'gamma)52Cr. The gamma rays from the inelastic process are detected with two large volume HPGe detectors placed at 110 degrees and 150 degrees with respect to the beam direction....

journal_title：Radiation protection dosimetry

authors： Mihailescu LC,Borcea C,Plompen AJ

更新日期：2005-01-01 00:00:00

abstract：:The outdoor gamma background of the historic center of Rome was studied by in situ measurements and average values of the outcropping geological formations. The survey resulted in two maps of dose equivalent rate, related to pre-anthropic and present conditions. Presently, the average of the dose equivalent rate from ...

journal_title：Radiation protection dosimetry

authors： Daniela G,Carloni S,Voltaggio M,Di Lisa GA

更新日期：2019-12-31 00:00:00

abstract：:The radioactivity concentrations of nuclides (238)U, (232)Th and (40)K in lake sediments collected from 15 different stations at Altınkaya dam lake and 12 different stations at Derbent dam lake in Turkey were measured using high-resolution gamma-ray spectrometry. The measurement was done using a coaxial HPGe detector ...

journal_title：Radiation protection dosimetry

authors： Eroğlu H,Kabadayi Ö

更新日期：2013-09-01 00:00:00

abstract：:For an accurate determination of the absorbed doses in complex radiation fields (e.g. mixed neutron-gamma fields), a better interpretation of the response of ionisation chambers is required. This study investigates a model of the ionisation chambers using a different approach, analysing the collected charge per minute...

journal_title：Radiation protection dosimetry

authors： Roca A,Nievaart VA,Moss RL,Stecher-Rasmussen F,Zamfir NV

更新日期：2008-01-01 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

authors： Waker AJ,Aslam,Lori J

更新日期：2011-02-01 00:00:00

abstract：:Based on the non-intersection model of cylindrical capillaries, the mean radius of the pores of some soils and building materials are estimated. In size, the above-mentioned radii are usually of the order of the free path of gas molecules at atmospheric pressure. A review of pore size distribution data also reveals th...

journal_title：Radiation protection dosimetry

authors： Minkin L

更新日期：2003-01-01 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

authors： Båth M,Håkansson M,Börjesson S,Hoeschen C,Tischenko O,Kheddache S,Vikgren J,Månsson LG

更新日期：2005-01-01 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

authors： Clouvas A,Xanthos S,Antonopoulos-Domis M

更新日期：2003-01-01 00:00:00

abstract：:It has been reported recently that the A-bomb gamma ray spectra received by the colon of the average Japanese survivor of Hiroshima and Nagasaki may be experimentally simulated using a hospital-based Philips SL15 linear accelerator. The simulated A-bomb gamma radiation may be used in radiobiology experiments to determ...

journal_title：Radiation protection dosimetry

authors： Pattison JE,Payne LC,Hugtenburg RP,Beddoe AH,Charles MW

更新日期：2004-01-01 00:00:00

abstract：:The standard paradigm for radiation effects in cellular systems has involved direct damage to DNA and in particular, DNA double strand breaks as the triggering lesions leading to mutation, cell death and transformation. Recently, however, a growing body of evidence has reported non-targeted effects, which are not a di...

journal_title：Radiation protection dosimetry

authors： Prise KM,Belyakov OV,Newman HC,Patel S,Schettino G,Folkard M,Michael BD

更新日期：2002-01-01 00:00:00

abstract：:Absorbed dose and average linear energy transfer (LET) were assessed by means of (7)LiF:Mg,Ti (TLD-700) thermoluminescent (TL) detectors for different panels on-board the Russian Segment of the International Space Station in the timeframe between March and November 2002 (233 d). A technique is presented to correct the...

journal_title：Radiation protection dosimetry

authors： Hajek M,Berger T,Fugger M,Fürstner M,Vana N,Akatov Y,Shurshakov V,Arkhangelsky V

更新日期：2006-01-01 00:00:00