Luminescence efficiency of europium activated Gd2O2S powder phosphors for medical imaging applications

dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Τουτουντζής, Ανδριανός Ε.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Σεφέρης, Ιωάννης Ε.	el
dc.contributor.author	Γεωργούσης, Μιχάλης	el
dc.date.accessioned	2015-01-30T17:28:21Z
dc.date.available	2015-01-30T17:28:21Z
dc.date.issued	2015-01-30
dc.identifier.uri	http://hdl.handle.net/11400/5163
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.source	http://e-jst.teiath.gr/	en
dc.subject	Medical imaging
dc.subject	Ιατρική απεικόνιση
dc.subject	Luminescence Efficiency
dc.subject	Matching Factor
dc.subject	Αποδοτικότητα Φωταύγειας
dc.subject	Powder Phosphors
dc.subject	Σκόνη φωσφόρου
dc.subject	Παράγοντας Αντιστοίχισης
dc.subject	Gd2O2S:Eu
dc.title	Luminescence efficiency of europium activated Gd2O2S powder phosphors for medical imaging applications	en
heal.type	journalArticle
heal.generalDescription	Special issue: Scientific papers presented on the 3nd International Conference on Experiments/Process/System Modeling/Simulation & Optimization in Athens, 8-11 July, 2009. Mini symposium on Medical Imaging, organized by G. Panayiotakis, I. Kandarakis, G. Fountos and I. Valais	en
heal.classification	Medicine
heal.classification	Medical physics
heal.classification	Ιατρική
heal.classification	Ιατρική φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85083001
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Ιατρική φυσική
heal.contributorName	Φούντος, Γεώργιος Π.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.language	en
heal.access	free
heal.recordProvider	Τεχνολογικό Εκπαιδευτικό Ίδρυμα Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Tμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας	el
heal.publicationDate	2010
heal.bibliographicCitation	Michail, C.M., Toutountzis, A.E., Valais, I.G., Seferis, I.E., Georgousis, M., et al. (2010). Luminescence efficiency of europium activated Gd2O2S powder phosphors for medical imaging applications. "e-Journal of Science & Technology". [Online] 5(2): 25-32. Available from: http://e-jst.teiath.gr/	en
heal.abstract	The aim of the present study was to examine the performance of the Gd2O2S:Eu powder scintillator for use in medical imaging applications. For this purpose various scintillator screens with coating thicknesses 33.1, 46.4, 63.1, 78.3 and 139.8 mg/cm2 were prepared in our laboratory by sedimentation of Gd2O2S:Eu powder on silica substrates. Quantum Detection Efficiency (QDE) and Energy Absorption Efficiency (EAE) were evaluated. Light emission efficiency and optical emission spectra of the screens were measured under X-ray excitation using X-ray tube voltages (50–140 kVp) employed in X-ray radiography. Spectral compatibility with various optical photon detectors (photodiodes, photocathodes, charge coupled devices, films) were determined using emission spectrum data. Gd2O2S:Eu showed peak emission in the wavelength range 620–630 nm. The 139.8 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	Νερατζής, Ηλίας	el
heal.publisher	Σιανούδης, Ιωάννης	el
heal.publisher	Βαλαής, Ιωάννης Γ.	el
heal.publisher	Φούντος, Γεώργιος Π.	el
heal.journalName	e-Journal of Science & Technology	en
heal.journalName	e-Περιοδικό Επιστήμης & Τεχνολογίας	el
heal.journalType	peer-reviewed
heal.fullTextAvailability	true