A theoretical model evaluating the angular distribution of luminescence emission in X-ray scintillating screens

dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Νικολόπουλος, Δημήτριος Σ.	el
dc.contributor.author	Επισκοπάκης, Α.	el
dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.date.accessioned	2015-05-07T17:29:56Z
dc.date.available	2015-05-07T17:29:56Z
dc.date.issued	2015-05-07
dc.identifier.uri	http://hdl.handle.net/11400/9863
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://www.sciencedirect.com/science/article/pii/S0969804305003726	en
dc.subject	Scintillators
dc.subject	Luminescence
dc.subject	Σπινθηριστές
dc.subject	Φωτοβολία
dc.title	A theoretical model evaluating the angular distribution of luminescence emission in X-ray scintillating screens	en
heal.type	journalArticle
heal.classification	Science
heal.classification	Physics
heal.classification	Επιστήμες
heal.classification	Φυσική
heal.classificationURI	http://skos.um.es/unescothes/C03532
heal.classificationURI	http://skos.um.es/unescothes/C02994
heal.classificationURI	N/A-Επιστήμες
heal.classificationURI	N/A-Φυσική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85118713
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85078838
heal.contributorName	Λιαπαρινός, Παναγιώτης Φ.	el
heal.contributorName	Βαλαής, Ιωάννης Γ.	el
heal.contributorName	Καγκάδης, Γεώργιος Χ.	el
heal.contributorName	Κουρκουτάς, Κωνσταντίνος Δ.	el
heal.contributorName	Σιανούδης, Ιωάννης Α.	el
heal.contributorName	Δημητρόπουλος, Νικόλαος	el
heal.contributorName	Νομικός, Κωνσταντίνος Δ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	doi:10.1016/j.apradiso.2005.11.016
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2006
heal.bibliographicCitation	Kandarakis, I., Cavouras, D., Nikolopoulos, D., Episkopakis, A., Kalivas, N., et al. (April 2006). A theoretical model evaluating the angular distribution of luminescence emission in X-ray scintillating screens. Applied Radiation and Isotopes. 64(4). pp. 508-519. Elsevier Ltd: 2006. Available from: http://www.sciencedirect.com/science/article/pii/S0969804305003726 [Accessed 04/01/2006]	en
heal.abstract	The aim of this study was to examine the angular distribution of the light emitted from radiation-excited scintillators in medical imaging detectors. This distribution diverges from Lambert's cosine law and affects the light emission efficiency of scintillators, hence it also affects the dose burden to the patient. In the present study, the angular distribution was theoretically modeled and was used to fit experimental data on various scintillator materials. Results of calculations revealed that the angular distribution is more directional than that predicted by Lambert's law. Divergence from this law is more pronounced for high values of light attenuation coefficient and thick scintillator layers (screens). This type of divergence reduces light emission efficiency and hence it increases the incident X-ray flux required for a given level of image brightness.	en
heal.publisher	Elsevier Ltd	en
heal.journalName	Applied Radiation and Isotopes	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true