Abstract:
:The use of image quality parameters in digital mammography such as contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR) and detective quantum efficiency (DQE) has been widespread, with the intention of detector evaluation and/or quantitative evaluation of the system performance. These parameters are useful in ensuring adequate system performance when tests are done against international standards or guidelines. Parameters like CNR are relative quantities that lie within a range that is manufacturer and system dependent. The use of a figure-of-merit (FOM) is a relatively new concept as a tool in digital mammography permitting quantitative assessment in terms of image quality and patient dose. This review summarises the available evidence for the use and applicability of an FOM in digital mammography.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Borg M,Badr I,Royle GJdoi
10.1093/rpd/ncr465subject
Has Abstractpub_date
2012-08-01 00:00:00pages
81-8issue
1eissn
0144-8420issn
1742-3406pii
ncr465journal_volume
151pub_type
杂志文章,评审abstract::The objective of this work is to obtain fluence to effective dose conversion coefficients for neutron point sources, using the GEANT4 toolkit. These calculations aim to investigate the aspects of neutron transport in the human body through Monte Carlo simulation using the International Commission on Radiological Prote...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncx286
更新日期:2018-08-01 00:00:00
abstract::This paper presents the finding of a study undertaken to determine natural radioactivity and associated hazards in local types of cement in Iran. A total of 42 samples were collected from various manufacturers and suppliers and analysed using a shielded HPGe gamma-ray spectrometer. The specific activities of 232Th, 22...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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journal_title:Radiation protection dosimetry
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a005913
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abstract::The project 'Radiological Analysis of Environmental Samples in the Gulf of Mexico and the coast of Quintana Roo', had the aim of identifying and quantifying anthropogenic radionuclides in environmental samples consisting of silt, sand and sea water. This paper presents the results of the radiological analysis of these...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv250
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abstract::The relationship between the mean glandular dose (MGD) and the compressed breast thickness (CBT) is commonly used for the presentation of mammographic dose survey results and could also be useful for the assessment of individual breast doses retrospectively in case of lack of necessary dosimetric instrumentation. The ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncn140
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abstract::The material for this study comprised control protocols from 248 mammography screening facilities, prepared by physicists employed at 16 Regional Coordinating Centres and the results from the clinical evaluation of mammographic images in 248 facilities in Poland. All mammograms were evaluated independently by three ex...
journal_title:Radiation protection dosimetry
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncz296
更新日期:2020-06-24 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006699
更新日期:2001-01-01 00:00:00
abstract::A simple hemispherical phantom has been designed and prepared for the EURADOS intercomparison exercise on (241)Am activity determination in the skull (2011-13). The phantom consists of three parts that substitute bone and soft tissues. (241)Am is deposited on the surfaces of the bone-substituting part. The design and ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nct213
更新日期:2014-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncu022
更新日期:2014-12-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a005951
更新日期:2002-01-01 00:00:00
abstract::Since the development of the CT scanner in the early 1970s, CT scanner technology has continuously developed through technical advancement, faster computer processing, superior detectors and helical and multi-detector scanning modes. As a result, the scope of clinical examinations has broadened considerably, and in pa...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncs285
更新日期:2013-02-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2017-04-20 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
pub_type: 杂志文章
doi:10.1093/rpd/nch320
更新日期:2004-01-01 00:00:00
abstract::The variety of radiative models for solar UV radiation is discussed. For the evaluation of measured UV radiation at the ground the basic problem is the availability of actual values of the atmospheric parameters that influence the UV radiation. The largest uncertainties are due to clouds and aerosol, which are highly ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2009-12-01 00:00:00
abstract::In this work, the MCNP4B code has been employed to calculate conversion coefficients from air kerma to the ambient dose equivalent, H*(10)/Ka, for monoenergetic photon energies from 10 keV to 50 MeV, assuming the kerma approximation. Also estimated are the H*(10)/Ka for photon beams produced by linear accelerators, su...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2004-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章,评审
doi:10.1093/oxfordjournals.rpd.a006619
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journal_title:Radiation protection dosimetry
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journal_title:Radiation protection dosimetry
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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
pub_type: 杂志文章
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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
pub_type: 杂志文章
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更新日期:2007-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2012-04-01 00:00:00
abstract::There have been few studies on the secondary cancer after radiation treatment in Chinese hospitals. This study has measured out-of-field absorbed organ doses from intensity-modulated radiation therapy (IMRT) radiotherapy for esophageal cancer in a Chinese hospital and evaluated the risks of secondary cancer. The dose ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
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journal_title:Radiation protection dosimetry
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abstract::A project to construct the Korea Multi-purpose Accelerator Complex (KOMAC) is currently underway targeting a high-intensity proton beam with an average current of 4.8 mA. As for the first stage of construction, a 20 MeV linac is planned to be built by 2007 and additional DTL sections will be added to increase the prot...
journal_title:Radiation protection dosimetry
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abstract::The new French radiation protection legislation requires the definition of the zoning of accelerator facilities with respect to radioactive waste. This activation inside the ESRF 6 GeV storage ring is essentially due to photonuclear reactions. This paper describes the first results of Monte Carlo calculations that wer...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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