Evaluation of the red emitting Gd2O2S: Eu powder scintillator for use in indirect X-ray digital mammography detectors

dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Φούντος, Γεώργιος Π.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.contributor.author	Λιαπαρίνος, Παναγιώτης Φ.	el
dc.date.accessioned	2015-01-23T15:55:17Z
dc.date.available	2015-01-23T15:55:17Z
dc.date.issued	2015-01-23
dc.identifier.uri	http://hdl.handle.net/11400/4620
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	Europium
dc.subject	Ανίχνευση ακτίνων Χ
dc.subject	Ευρώπιο
dc.title	Evaluation of the red emitting Gd2O2S: Eu powder scintillator for use in indirect X-ray digital mammography detectors	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.keywordURI	http://id.loc.gov/authorities/subjects/sh85045863
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	DOI: 10.1109/TNS.2011.2162002
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2011
heal.bibliographicCitation	Michail, C., Fountos, G., Valais, I., Kalyvas, N., Liaparinos, P., et al. (October 2011). Evaluation of the red emitting Gd2O2S: Eu powder scintillator for use in indirect X-ray digital mammography detectors. Transactions on Nuclear Science. 58(5). pp. 2503-2511. IEEE.	en
heal.abstract	The aim of the present study was to investigate the imaging transfer characteristics and the luminescence efficiency (XLE) of Gd2O2S:Eu powder scintillator for use in X-ray mammography detectors. Gd2O2S:Eu emits in the red part of the visible spectrum, having very good spectral compatibility with optical sensors employed in digital imaging systems. Three Gd2O2S:Eu powder scintillating screens, with coating thicknesses 33.1, 46.4 and 63.1 mg/cm2 , were prepared in our laboratory. The imaging performance of these screens was assessed by experimental determination of the modulation transfer function (MTF), the noise transfer function (NTF) and the detective quantum efficiency (DQE) as well as a single index image quality parameter such as the information capacity (IC). A theoretical model, describing radiation and light transfer, was used to fit experimental MTF data. This has allowed the estimation of optical attenuation coefficients of the scintillator. In addition, a previously validated Monte Carlo code, based on the X-ray attenuation properties and on the Mie light scattering theory, was used to estimate the X-ray detection efficiency, the Swank factor and the zero frequency DQE of the Gd2O2S:Eu scintillator. Results showed that Gd2O2S:Eu exhibits high MTF and DQE values, which are comparable to those of a commercially employed Gd2O2S:Tb screen. In addition Gd2O2S:Eu shows high compatibility (effective gain) to CCDs and to recently introduced CMOS based detectors. Considering our image quality parameters and luminescence efficiency results, this material can potentially be considered for use in digital X-ray mammography detectors.	en
heal.sponsor	IEEE Nuclear and Plasma Sciences Society	en
heal.publisher	IEEE	en
heal.journalName	Transactions on Nuclear Science	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true