COMPARISON OF MCNP AND VISIPLAN DOSE-FIELD CALCULATIONS FOR MULTILAYER SHIELDING.

abstract：:The purpose of this study was to evaluate radiation doses to the patients and operators during interventional cardiology procedures, with a particular focus on the transcatheter aortic valve implantation (TAVI). Patient doses for 5549 diagnostic and therapeutic procedures and 76 TAVI were examined, as well as occupati...

journal_title：Radiation protection dosimetry

authors： Signorotto P,del Vecchio A,Montorfano M,Maisano F,Giagnorio M,Bellanca R,Colombo A,Calandrino R

更新日期：2010-12-01 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 new RAMARN system for radon volume activity measurement was developed in 2003 and has been in use since then. RAMARN system consists of a plastic chamber that is conically cylindrical in shape and about 0.5 l in volume; a bare Kodak LR 115 is located on the bottom of this diffusion chamber. The size was chosen to ...

journal_title：Radiation protection dosimetry

authors： Thinová L,Burian I

更新日期：2008-01-01 00:00:00

abstract：:The measurement of air samples may be used to assess risks of internal exposures, either by the use of workplace static air samplers (SAS) or personal air samplers (PAS). These measurements need to incorporate information on the physical and chemical nature of the aerosol, and the relationship between the sampled and ...

journal_title：Radiation protection dosimetry

authors： Roberts GA,Bull RK

更新日期：2007-01-01 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：:The relation of radiation exposure (dose) with acute radiation syndrome (ARS) depends on many factors. In this overview, we reconsider (1) radiation exposure characteristics (e.g. radiation quality, fractionation, dose rate, partial/total body irradiation) and (2) biological processes (e.g. radiosensitivity, cell cycl...

journal_title：Radiation protection dosimetry

authors： Port M,Majewski M,Abend M

更新日期：2019-12-31 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：:This paper describes the results of the simulation of a radiophotoluminescent (RPL) dosemeter with the Monte Carlo transport code MCNPX. The aim of this study is to calculate the response with MCNPX of the RPL dosemeter in terms of equivalent doses H(p) (0.07) and H(p)(10) using X-ray photon radiation qualities N seri...

journal_title：Radiation protection dosimetry

authors： Hocine N,Donadille L,Huet C,Itié C,Clairand I

更新日期：2011-03-01 00:00:00

abstract：:The purpose of this study was to establish a dose estimation tool with Monte Carlo (MC) simulations. A 5-y-old paediatric anthropomorphic phantom was computed tomography (CT) scanned to create a voxelised phantom and used as an input for the abdominal cone-beam CT in a BEAMnrc/EGSnrc MC system. An X-ray tube model of ...

journal_title：Radiation protection dosimetry

authors： Kim S,Yoshizumi TT,Toncheva G,Frush DP,Yin FF

更新日期：2010-03-01 00:00:00

abstract：:One source of background signals, which are non-radiation related, is the reader system and it includes dark current, external contaminants and electronic spikes. These factors can induce signals equivalent to several hundredths of mSv. Mostly, the effects are minimised by proper design of the TLD reader, but some eff...

journal_title：Radiation protection dosimetry

authors： German U,Weinstein M

更新日期：2002-01-01 00:00:00

abstract：:Calcium fluoride CaF2 is an interesting host lattice for rare earth (RE) activators. CaF2 crystals doped with different concentrations of Dy, Ce, Er and Gd have been grown by the Bridgman technique and their deformation luminescence (DL) induced by room temperature gamma irradiation has been recorded. When a uniaxial ...

journal_title：Radiation protection dosimetry

authors： Kher RS,Brahme N,Banerjee M,Dhoble SJ,Khokhar MS

更新日期：2006-01-01 00:00:00

abstract：:QUADOS, a Concerted Action of the European Commission, has promoted an intercomparison aimed at evaluating the use of computational codes for dosimetry in radiation protection and medical physics. This intercomparison was open to all users of radiation transport codes. Eight problems were selected for their relevance ...

journal_title：Radiation protection dosimetry

authors： Gualdrini G,Agosteo S,Ménard S,Price RA,Chartier JL,Grosswendt B,Kodeli I,Leuthold GP,Siebert BR,Tagziria H,Tanner RJ,Terrissol M,Zankl M

更新日期：2005-01-01 00:00:00

abstract：:The combination of fast neutron therapy and boron neutron capture therapy is currently being studied as a possible treatment for some radio-resistant brain tumours. In an attempt to design a boron-enhanced fast neutron therapy beam for the Fermilab Fast Neutron Therapy Facility, the use of moderating material surround...

journal_title：Radiation protection dosimetry

authors： Sweezy J,Hertel N,Lennox A

更新日期：2005-01-01 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：:Naturally occurring radioactive materials (NORM) wastes with different radiological characteristics are generated in several industries. The appropriate options for NORM waste management including disposal options should be discussed and established based on the act and regulation guidelines. Several studies calculate...

journal_title：Radiation protection dosimetry

authors： Jeong J,Ko NY,Cho DK,Baik MH,Yoon KH

更新日期：2018-11-01 00:00:00

abstract：:This study aims to describe current risk management practices and policies across the world in relation to personal exposures from devices emitting radiofrequency fields, environmental exposures from fixed installations and exposures in the work environment. Data from 86 countries representing all WHO regions were col...

journal_title：Radiation protection dosimetry

authors： Dhungel A,Zmirou-Navier D,van Deventer E

更新日期：2015-04-01 00:00:00

abstract：:Radionuclide concentrations of ²²⁶Ra, ²³²Th and ⁴⁰K in different types of building materials used in Egypt were measured using gamma-ray spectroscopy. The results showed relatively moderate radionuclide concentrations for all samples except granite, which showed extremely high concentrations of 78.75 ± 2.36, 2.82 ± 0....

journal_title：Radiation protection dosimetry

authors： Hassan NM,Mansour NA,Fayez-Hassan M

更新日期：2013-12-01 00:00:00

abstract：:This study aimed to estimate the radiation organ doses from occupational exposure in 94 396 Korean medical radiation workers. Data on badge doses (i.e. personal dose equivalent at 10 mm) between 1996 and 2011 obtained from a national dosimetry registry, survey data from 2012 to 2013, and organ dose conversion coeffici...

journal_title：Radiation protection dosimetry

authors： Choi Y,Shil Cha E,Jin Bang Y,Ko S,Ha M,Lee C,Jin Lee W

更新日期：2018-04-01 00:00:00

abstract：:For the calibration of personal dosemeters in terms of H(p)(10), the ISO water slab phantom shall be used. The irradiation geometry must be chosen such that the field diameter at the phantom front surface is large enough to irradiate the phantom completely and, in addition, homogeneously. However, in practice it is no...

journal_title：Radiation protection dosimetry

authors： Ankerhold U,Ambrosi P

更新日期：2010-06-01 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：:Comparative studies on the translocation and retention of intramuscularly (i.m.) injected thorium nitrate (234Th 46 ng + 232Th 5 microg per rat) in solutions of citrate, CaDTPA or citrate + CaDTPA in rats have been conducted. Results showed that only thorium in mixed-ligand solution was entirely translocated from the ...

journal_title：Radiation protection dosimetry

authors： Rencová J,Vlková A,Veselá G

更新日期：2003-01-01 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 evaluation of medical imaging systems may be performed using both subjective (e.g. high contrast limiting resolution, and low contrast detail detectability), and objective/physical (e.g. characteristic curve, signal-to-noise ratio, modulation transfer function, and Wiener spectra) indices of image quality. For the...

journal_title：Radiation protection dosimetry

authors： Marsh DM,Malone JF

更新日期：2001-01-01 00:00:00

abstract：:Multi-element thermoluminescence dosemeters (TLD), such as the Panasonic UD-809, are used in personal dosimetry. The Panasonic UD-809 dosemeter consists of one gamma sensitive and three neutron sensitive TLD elements with different filter materials. In this work, the neutron energy responses (the number of (n,alpha) r...

journal_title：Radiation protection dosimetry

authors： Veinot KG,Hertel NE

更新日期：2001-01-01 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：:Thailand is predominantly an agricultural country. The Northern Region occupies the second largest cultivated land area in the country. To establish baseline data for future environmental monitoring, seventy-nine plant samples including vegetables, fruits and tobaccos and their relevant soils were collected from the m...

journal_title：Radiation protection dosimetry

authors： Kritsananuwat R,Kranrod C,Chanyotha S,Ploykrathok T,Sriploy P

更新日期：2019-10-01 00:00:00

abstract：:A number of factors affect the measurements by charge coupled (CCD) array spectroradiometers, including stray light, dynamic response and ambient temperature. The departure from linearity was assessed for four CCD array spectroradiometers and linearity correction calculated with standard uncertainties error estimates....

journal_title：Radiation protection dosimetry

authors： Baczynska KA,Price LL,Khazova M

更新日期：2016-11-01 00:00:00

abstract：:This paper describes the findings of the radiation situation analysis on-site near Sysoeva and Razbojnik Bays. The results of radiation monitoring performed by radiological laboratory of DalRAO and studies performed by the experts from the Burnasyan Federal Medical Biophysical Centre have been used in the course of an...

journal_title：Radiation protection dosimetry

authors： Shandala NK,Kiselev SM,Lucyanec AI,Titov AV,Seregin VA,Isaev DV,Akhromeev SV

更新日期：2011-07-01 00:00:00

abstract：:This paper presents a compartmental model for estimating the ingestion dose, due to 137Cs, arising from the consumption of marine fish in Hong Kong. 137Cs is one of the more important radionuclides released in routine liquid effluents discharged from the Guangdong Nuclear Power Station at Daya Bay, which began commerc...

journal_title：Radiation protection dosimetry

authors： Poon CB,Au SM

更新日期：2002-01-01 00:00:00

abstract：:The HTR method, developed for determination of absorbed dose and average LET of mixed radiation fields in space, was applied during several space missions on space station MIR, space shuttles and satellites. The method utilises the changes of peak height ratios in the glow curves in dependence on the linear energy tra...

journal_title：Radiation protection dosimetry

authors： Vana N,Schoner W,Noll M,Fugger M,Akatov Y,Shurshakov V

更新日期：1999-01-01 00:00:00