Monte Carlo determination of the characteristic limits in measurement of ionising radiation--fundamentals and numerics.

abstract：:The neural network method has been used for the unfolding of neutron spectra in neutron spectrometry by Bonner spheres. A back propagation algorithm was used for training of neural networks. 4 mm x 4 mm bare LiI (Eu) and in a polyethylene sphere set: 2, 3, 4, 5, 6, 7, 8, 10, 12, 18 inch diameter have been used for unf...

journal_title：Radiation protection dosimetry

authors： Kardan MR,Setayeshi S,Koohi-Fayegh R,Ghiassi-Nejad M

更新日期：2003-01-01 00:00:00

abstract：:A Japanese adult male voxel (volume pixel) phantom (hereinafter referred to as the JM phantom) was constructed on the basis of CT images of a healthy Japanese adult male volunteer. Body characteristics of the JM phantom were compared with those of a voxelised MIRD5 type phantom and a Japanese adult male voxel phantom ...

journal_title：Radiation protection dosimetry

authors： Sato K,Noguchi H,Emoto Y,Koga S,Saito K

更新日期：2007-01-01 00:00:00

abstract：:Despite the considerable improvement in accuracy in comparison with previous intercomparison programmes, the outcome of the recent 3rd International Intercomparison on EPR Tooth Dosimetry has demonstrated that performance of various protocols practised in different laboratories significantly varies. SCRM and MUG took ...

journal_title：Radiation protection dosimetry

authors： Chumak V,Ciesielski B,Sholom S,Schultka K

更新日期：2006-01-01 00:00:00

abstract：:Dose response effects of diodes due to the high atomic number of silicon relative to water are investigated. While quality chances in the primary component of a megavoltage beam with depth are minimal. Compton scattered photons are shown to have a substantial effect on the quality leading to their enhanced absorption ...

journal_title：Radiation protection dosimetry

authors： Yin Z,Hugtenburg RP,Beddoe AH

更新日期：2002-01-01 00:00:00

abstract：:TRIPOLI-4.3 Monte Carlo transport code has been used to evaluate the QUADOS (Quality Assurance of Computational Tools for Dosimetry) problem P4, neutron and photon response of an albedo-type thermoluminescence personal dosemeter (TLD) located on an ISO slab phantom. Two enriched 6LiF and two 7LiF TLD chips were used a...

journal_title：Radiation protection dosimetry

authors： Lee YK

更新日期：2005-01-01 00:00:00

abstract：:Preliminary studies have been conducted into the occupational radiation exposure to NORMS from surface and underground mining operations in a gold mine in the Ashanti Region of Ghana. A brief description of the methods and instrumentation is presented. The annual effective dose has been estimated to be 0.26 +/- 0.11 m...

journal_title：Radiation protection dosimetry

authors： Darko EO,Tetteh GK,Akaho EH

更新日期：2005-01-01 00:00:00

abstract：:A multipurpose anthropomorphic neck phantom was designed and fabricated for use in medical applications. The designed neck phantom is composed of seven elliptic cylindrical slices with a semi-major axis of 14 cm and a semi-minor axis of 12.5 cm, each having the thickness of 2 cm. The thyroid gland, bony part of the ne...

journal_title：Radiation protection dosimetry

authors： Mehdizadeh Naderi S,Sina S,Karimipoorfard M,Lotfalizadeh F,Entezarmahdi M,Moradi H,Faghihi R

更新日期：2016-03-01 00:00:00

abstract：:This work aims at presenting a study using Monte Carlo simulation of a Multileaf Shielding (MLS) System designed to be used for the protection of patients who undergo radiotherapy treatment, against undesired exposure to neutrons produced in the components of the medical linear accelerator heads. The choice of radioth...

journal_title：Radiation protection dosimetry

authors： Rebello WF,Silva AX,Facure A

更新日期：2008-01-01 00:00:00

abstract：:A follow-up study was taken up in a mineralised zone situated in Hamirpur district, Himachal Pradesh, India, to investigate high values of radon concentrations reported in past studies as well to update the old radon data based on bare SSNTD technique. In the present investigation, the concentrations of indoor radon, ...

journal_title：Radiation protection dosimetry

authors： Bajwa BS,Singh P,Singh P,Saini K,Singh S,Sahoo BK,Sapra BK

更新日期：2016-03-01 00:00:00

abstract：:The potential harmful effect of electromagnetic fields on human health is an important issue that has been widely discussed in the scientific community. The investigation of temperature rise in human body following exposure to electromagnetic fields has been found impractical in many aspects. Therefore, fabrication of...

journal_title：Radiation protection dosimetry

authors： Sorgucu U,Develi I,Ozen S

更新日期：2016-03-01 00:00:00

abstract：:The observation of anomalies in the radon concentration in soil gas and ground water before earthquakes initiated systematic investigations on earthquake precursor phenomena. The question what is needed for a meaningful earthquake prediction as well as what types of precursory effects can be expected is shortly discus...

journal_title：Radiation protection dosimetry

authors： Friedmann H

更新日期：2012-04-01 00:00:00

abstract：:In the event of a criticality accident, not only the maximal doses received by the victims must be determined but it is also crucial to evaluate the doses to the different organs. With a neutron component, morphology is a key parameter in the organ dose calculation. As the simulation tools can be time consuming to pro...

journal_title：Radiation protection dosimetry

authors： Chevallier MA,Pontier JB,Morin H,Duluc M,Evo S,Letang E,Trompier F

更新日期：2020-11-06 00:00:00

abstract：:The Health Physics Measurements Group at the Los Alamos National Laboratory (LANL) has initiated a study of neutron reference fields at selected US Department of Energy (DOE) calibration facilities. To date, field characterisation has been completed at five facilities. These fields are traceable to the National Instit...

journal_title：Radiation protection dosimetry

authors： Olsher RH,McLean TD,Mallett MW,Seagraves DT,Gadd MS,Markham RL,Murphy RO,Devine RT

更新日期：2007-01-01 00:00:00

abstract：:Occupational radiation exposure is a hazard that should be avoided or at least minimised. This study aimed to evaluate the radiation exposure of nuclear medicine department employees monitored during the 1991-2007 period, and to investigate the relationship between the annual effective doses of the personnel and the n...

journal_title：Radiation protection dosimetry

authors： Piwowarska-Bilska H,Birkenfeld B,Listewnik M,Zorga P

更新日期：2010-08-01 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：:Human exploration of the solar system beyond Earth's orbit will entail many risks for the crew on these deep space missions. One of the most significant health risks is exposure to the harsh space radiation environment beyond the protection provided by the Earth's intrinsic magnetic field. Crew on exploration missions...

journal_title：Radiation protection dosimetry

authors： Townsend LW

更新日期：2005-01-01 00:00:00

abstract：:A device based on a single silicon detector of special converter/detector design optimised for the determination of the neutron dose equivalent is also used for the determination of the photon dose equivalent. While the neutron dose is determined on the basis of signals corresponding to energy depositions above 1.5 Me...

journal_title：Radiation protection dosimetry

authors： Luszik-Bhadra M

更新日期：2002-01-01 00:00:00

abstract：:Estimation of the surface dose is very important for patients undergoing radiation therapy. The purpose of this study is to investigate the dose at the surface of a water phantom at a depth of 0.007 cm as recommended by the International Commission on Radiological Protection and International Commission on Radiation U...

journal_title：Radiation protection dosimetry

authors： Alashrah S,Kandaiya S,Maalej N,El-Taher A

更新日期：2014-12-01 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：:Lung disease represents one of the most life-threatening conditions in prematurely born children. In the evaluation of the neonatal chest, the primary and most important diagnostic study is therefore the chest radiograph. Since prematurely born children are very sensitive to radiation, those radiographs may lead to a ...

journal_title：Radiation protection dosimetry

authors： Smans K,Struelens L,Smet M,Bosmans H,Vanhavere F

更新日期：2008-01-01 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 presents the results of 222Rn in 24 sources of mineral water, 54 samples from different captured natural springs and drillings. 222Rn determination was performed by direct measurement using Alpha Guard with Aqua Kit. The results for the TDS, anions (F-, Cl-, SO42-), cations (Na+, Ca2+, Mg2+), pH and tempera...

journal_title：Radiation protection dosimetry

authors： Kamenova-Totzeva RM,Totzev AV,Kotova RM,Ivanova-Teneva GR

更新日期：2018-09-01 00:00:00

abstract：:Analytical geometric models for the bones of the knee region have been developed. A survey was done on real pieces to obtain the dimensions of the geometric sections used in each model. The dependence of the section dimensions on the bone length and the estimated dimensions of the bones for a 1.70 m tall person are pr...

journal_title：Radiation protection dosimetry

authors： Venturini L,Sordi GM,Fernandes F

更新日期：2008-01-01 00:00:00

abstract：:Computed tomography dose index w and dose length product were recorded for the purpose of developing diagnostic reference levels (DRLs) for radiation dose optimisation. The study was conducted in three radiology departments with CT centres in Northern Nigeria. Data were collected from 54 consenting adult participants ...

journal_title：Radiation protection dosimetry

authors： Garba I,Engel-Hills P,Davidson F,Tabari AM

更新日期：2015-07-01 00:00:00

abstract：:The United Nations Environment Programme (UNEP) has performed a field survey at 11 sites located in Kosovo, where depleted uranium (DU) ammunitions were used by the North Atlantic Treaty Organization (NATO) during the last Balkans conflict (1999). Soil sampling was performed to assess the spread of DU ground contamina...

journal_title：Radiation protection dosimetry

authors： Sansone U,Stellato L,Jia G,Rosamilia S,Gaudino S,Barbizzi S,Belli M

更新日期：2001-01-01 00:00:00

abstract：:Spinal deformities affect young individuals predominantly girls who are usually subjected to regular and intensive radiological investigation especially before and after corrective surgery. Optimisation of spine computed tomography (CT) and the implementation of the low-dose CT in the work-up of spinal deformities wer...

journal_title：Radiation protection dosimetry

authors： Abul-Kasim K

更新日期：2010-04-01 00:00:00

abstract：:It has become increasingly evident from reports in the literature that there are many confounding factors capable of modulating radiation-induced non-targeted responses, such as the bystander effect and the adaptive response. In this paper, we examine recent data which suggest that the observation of non-targeted resp...

journal_title：Radiation protection dosimetry

authors： Sowa MB,Goetz W,Baulch JE,Lewis AJ,Morgan WF

更新日期：2011-02-01 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：:The present work aims to assess the effective doses from long-term continual radon monitoring in six European caves (Slovenia, Slovakia and the Czech Republic), including influencing environmental factors. Caves are important radiation protection subjects because of elevated radon activity concentration (~kBq/m3), mos...

journal_title：Radiation protection dosimetry

authors： Ambrosino F,Thinová L,Briestenský M,Sabbarese C

更新日期：2020-11-27 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