Abstract:
:Image viewing and processing software in computed radiography manipulates image contrast in such a way that all relevant image features are rendered to an appropriate degree of visibility, and improves image quality using enhancement algorithms. The purpose of this study was to investigate procedures for the quality assessment of image processing software for computed radiography with the use of existing test objects and to assess the influence that processing introduces on physical image quality characteristics. Measurements of high-contrast resolution, low-contrast resolution, spatial resolution, greyscale (characteristic curve) and geometric distortion were performed 'subjectively' by three independent observers and 'objectively' by the use of criteria based on pixel intensity values. Results show quality assessment is possible without the need for human evaluators, using digital images. It was discovered that the processing software evaluated in this study was able to improve some aspects of image quality, without introducing geometric distortion.
journal_name
Radiat Prot Dosimetryjournal_title
Radiation protection dosimetryauthors
Efstathopoulos EP,Benekos O,Molfetas M,Charou E,Kottou S,Argentos S,Kelekis NLdoi
10.1093/rpd/nci742keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
291-7issue
1-3eissn
0144-8420issn
1742-3406pii
nci742journal_volume
117pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1093/rpd/ncp164
更新日期:2009-09-01 00:00:00
abstract::Thoron progeny concentrations were determined using the time-integrated method around closed uranium mine sites in Japan. Because the time-integrated radon progeny monitor developed by the authors has the function to detect (212)Po, time-integrated monitoring of thoron progeny concentration is also available with the ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncq242
更新日期:2010-10-01 00:00:00
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journal_title:Radiation protection dosimetry
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2017-04-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncv478
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2020-11-18 00:00:00
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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/rpd/nci300
更新日期:2005-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncw008
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
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更新日期:2021-02-03 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a005870
更新日期:2002-01-01 00:00:00
abstract::In a previous paper, conversion coefficients for the personal dose equivalent, H(p)(d), for photons were reported. This note reports values for electrons calculated using similar techniques. The personal dose equivalent is the quantity used to approximate the protection quantity effective dose when performing personal...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncr252
更新日期:2012-04-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/nch143
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
doi:10.1093/rpd/ncp055
更新日期:2009-07-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncz170
更新日期:2019-12-31 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:2009-11-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncu180
更新日期:2014-06-01 00:00:00
abstract::In radiotherapy with carbon ions, biological effects of treatments have to be predicted. For this purpose, one of the most used models is the local effect model (LEM) developed at the Gesellschaft für Schwerionenforschung (GSI), Germany. At the Istituto Nazionale di Fisica Nucleare, Italy, the reliability of the last ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncq407
更新日期:2011-02-01 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:2007-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncx057
更新日期:2017-12-01 00:00:00
abstract::The Alpha Magnetic Spectrometer (AMS01), a high-sensitivity particle spectrometer, was successfully flown for 10 d in June 1998 (STS91) in the orbit of the International Space Station (51.7 degrees, -380 km). A high-statistics dataset of galactic cosmic rays were measured as a function of geomagnetic latitude, includi...
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.a006294
更新日期:2003-01-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncq508
更新日期:2011-03-01 00:00:00
abstract::Thorium is used in many different industrial technologies and is widely found in nature. Internal contamination with thorium is considered as highly hazardous because of its radiological and chemical toxicities, which depend on the chemical form in which thorium appears. The assessment of the thorium body burden is th...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006656
更新日期:2001-01-01 00:00:00
abstract::Results of field tests with explosive dispersal of a radioactive substance (RaS) are presented. The paper deals with tests exploiting artificial obstacles as a continuation and expansion of the tests used in this study performed in free area described previously. The essential goal of the tests was to estimate the dis...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncs209
更新日期:2013-04-01 00:00:00
abstract::The use of high-energy linear electron accelerators (LINACs) for medical cancer treatments is widespread on an international scale. The associated bremsstrahlung X rays may produce neutrons as a result of subsequent photonuclear reactions with the different materials constituting the accelerator head. The generated ne...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncm075
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
doi:10.1093/rpd/ncx289
更新日期:2018-08-01 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:2011-02-01 00:00:00
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journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/oxfordjournals.rpd.a006549
更新日期:2001-01-01 00:00:00
abstract::Dose conversions were studied for dosimetry of atomic bomb survivors based upon electron spin resonance (ESR) measurements of tooth enamel. Previously analysed data had clarified that the tooth enamel dose could be much larger than other organ doses from a low-energy photon exposure. The radiation doses to other organ...
journal_title:Radiation protection dosimetry
pub_type: 杂志文章
doi:10.1093/rpd/ncr408
更新日期:2012-03-01 00:00:00