Europium activated phosphors for use in x-ray detectors of medical imaging systems

dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-05-04T10:13:01Z
dc.date.available	2015-05-04T10:13:01Z
dc.date.issued	2015-05-04
dc.identifier.uri	http://hdl.handle.net/11400/9632
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://link.springer.com/article/10.1007/s003300050387	en
dc.subject	X-ray screens
dc.subject	X-ray luminescence
dc.subject	X-ray οθόνες
dc.subject	X-ray φωταύγεια
dc.title	Europium activated phosphors for use in x-ray detectors of medical imaging systems	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.identifier.secondary	DOI 10.1007/s003300050387
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	1998
heal.bibliographicCitation	Kandarakis, I., Cavouras, D., Panayiotakis, G., Triantis, D. and Nomicos, C. (February 1998). Europium activated phosphors for use in x-ray detectors of medical imaging systems. European Radiology. 8(2). pp. 313-318. Springer-Verlag: 1998. Available from: http://link.springer.com/article/10.1007/s003300050387	en
heal.abstract	Three europium-activated phosphors Y2O2S:Eu, Y2O3:Eu, and YVO4:Eu emitting red light were studied to investigate their suitability for radiographic cassettes or digital imaging systems. Screens were prepared from phosphor powders with various coating thicknesses by sedimentation. To assess phosphor light producing efficiency in relation to patient dose, each screen was X-rayed using 40–120 kVp and the number of light photons emitted per X-ray incident was experimentally and theoretically evaluated. Additionally, the capability of the emitted light to sensitize films or to generate electrons in silicon photodiodes used in digital imaging systems was examined. Y2O2S:Eu screens were most efficient in light emission, and when combined with either red sensitive films or Si photodiodes, they were found superior to Y2O3:Eu or YVO4:Eu screens in film grain or electron signal generation. In many cases they were also found superior to terbium-activated phosphors. Provided that several problems related to industrial production (special dyes, reflective backing, crossover effects) are dealt with, those europium-activated screens could be employed in low-tube-voltage radiographic applications.	en
heal.publisher	Springer-Verlag	en
heal.journalName	European Radiology	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true