Light emission efficiency of Gd2O2S:eu (GOS:Eu) powder screens under X-ray mammography conditions

dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Τουτουντζής, Ανδριανός Ε.	el
dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.contributor.author	Φούντος, Γεώργιος Π.	el
dc.date.accessioned	2015-01-19T11:46:05Z
dc.date.issued	2015-01-19
dc.identifier.uri	http://hdl.handle.net/11400/4250
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	X-ray detection
dc.subject	X-ray imaging
dc.subject	Ανίχνευση ακτίνων Χ
dc.subject	Απεικόνιση με ακτίνες Χ
dc.title	Light emission efficiency of Gd2O2S:eu (GOS:Eu) powder screens under X-ray mammography conditions	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Physics
heal.classification	Ιατρική
heal.classification	Φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://skos.um.es/unescothes/C02994
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Φυσική
heal.contributorName	Ντάβιντ, Στράτος Λ.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	DOI: 10.1109/TNS.2008.2007562
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2009
heal.bibliographicCitation	Michail, C., Valais, I., Toutountzis, A., Kalyvas, N., Fountos, G., et al. (January 2009). Light emission efficiency of Gd2O2S:eu (GOS:Eu) powder screens under X-ray mammography conditions. Transactions on Nuclear Science. 55(6). pp. 3703 - 3709. IEEE	en
heal.abstract	The aim of this study was to examine Gd2O2S:Eu (also known as GOS:Eu) powder scintillator under X-ray mammography imaging conditions. For this purpose, three scintillator screens with coating thicknesses of 33.1, 46.4 and 63.1 mg/cm2 were prepared in our laboratory by sedimentation of Gd2O2S:Eu powder. Light emission efficiency and optical emission spectra of the screens were measured under X-ray excitation using X-ray tube voltages (22-49 kVp) employed in mammography. Spectral compatibility with various optical photon detectors (photodiodes, photocathodes, charge coupled devices, films) and intrinsic conversion efficiency value (0.12) were determined by using emission spectrum data. In addition, parameters related to X-ray detection and energy absorption efficiency were calculated. Gd2O2S:Eu showed peak emission in the wavelength range 620-630 nm. The 63.1 mg/cm2 phosphor screen appeared with the maximum light emission efficiency. Due to its reddish emission spectrum, Gd2O2S:Eu showed excellent compatibility with the sensitivity of many currently used photodetectors and could be considered for application in X-ray imaging especially in various digital detectors.	en
heal.publisher	IEEE	en
heal.journalName	Transactions on Nuclear Science	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true