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dc.contributor.authorKalef-Ezra, J. A.en
dc.date.accessioned2015-11-24T19:14:22Z-
dc.date.available2015-11-24T19:14:22Z-
dc.identifier.issn1742-3406-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/21295-
dc.rightsDefault Licence-
dc.subjectHalf-Lifeen
dc.subject*Health Physicsen
dc.subjectHumansen
dc.subjectOccupational Exposure/*prevention & controlen
dc.subjectParticle Accelerators/*instrumentationen
dc.subjectPhantoms, Imagingen
dc.subjectRadiation Monitoringen
dc.subject*Radiation Protectionen
dc.subjectRadiotherapy, High-Energy/*adverse effectsen
dc.subjectRisk Assessmenten
dc.subjectX-Raysen
dc.titleHealth physics aspects in treatment rooms after 18-MV X-ray irradiationsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primary10.1093/rpd/ncr361-
heal.identifier.secondaryhttp://www.ncbi.nlm.nih.gov/pubmed/21979431-
heal.identifier.secondaryhttp://rpd.oxfordjournals.org/content/147/1-2/281.full.pdf-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικήςel
heal.publicationDate2011-
heal.abstractDelayed activation products contribute to the exposure of the staff operating high-energy accelerators. Induced activity was studied in a treatment room following 18-MV X-ray irradiations using a hand-held system that allows both dose rate measurements and spectroscopic analysis. The major activation products and the corresponding nuclear reactions were identified. At the majority of the studied locations, beta(+) emitters were the main short-term dose contributors. The time variation of the absorbed dose rate in a treatment room during the first 20-min post-irradiation was represented by the sum of two exponential components with half-lives of 1-2 min and either 4 or 10 min, depending on the location in the room. Components with a half-life of hours or days contribute <1 % to the initial dose rate. The activation of some accessories, such as iron filters and portal imagers, deserve special attention. The collection of such data with the proposed method allows the development of optimised working protocols at each treatment room.en
heal.journalNameRadiat Prot Dosimetryen
heal.journalTypepeer-reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά) - ΙΑΤ

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