On the response of Y3Al5O12: Ce (YAG: Ce) powder scintillating screens to medical imaging X-rays

dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Σιανούδης, Ιωάννης Α.	el
dc.contributor.author	Νικολόπουλος, Δημήτριος Σ.	el
dc.contributor.author	Επισκοπάκης, Α.	el
dc.date.accessioned	2015-01-19T14:34:11Z
dc.date.available	2015-01-19T14:34:11Z
dc.date.issued	2015-01-19
dc.identifier.uri	http://hdl.handle.net/11400/4257
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.elsevier.com	en
dc.subject	Phosphor screens
dc.subject	Luminescence efficiency
dc.subject	Οθόνες φωσφόρου
dc.subject	Απόδοση φωτοβολίας
dc.title	On the response of Y3Al5O12: Ce (YAG: Ce) powder scintillating screens to medical imaging X-rays	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	Λιναρδάτος, Διονύσης	el
heal.contributorName	Μαργέτης, Δ.	el
heal.contributorName	Νιργιανάκη, Ε.	el
heal.contributorName	Ρούσσου, Μαρία	el
heal.contributorName	Μελισσαρόπουλος, Π.	el
heal.contributorName	Καλύβας, Νεκτάριος Ι.	el
heal.contributorName	Καλατζής, Ιωάννης	el
heal.contributorName	Κουρκουτάς, Κωνσταντίνος Δ.	el
heal.contributorName	Δημητρόπουλος, Νικόλαος	el
heal.contributorName	Λουίτζη, Α.	el
heal.contributorName	Νομικός, Κωνσταντίνος Δ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	doi:10.1016/j.nima.2004.08.101
heal.language	en
heal.access	free
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2005
heal.bibliographicCitation	Kandarakis, I., Cavouras, D., Sianoudis, I., Nikolopoulos, D., Episkopakis, A., et al. (February 2005). On the response of Y3Al5O12: Ce (YAG: Ce) powder scintillating screens to medical imaging X-rays. Nuclear Instruments and Methods in Physics Research A. 538(1-3). pp. 615–630. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 16/09/2004]	en
heal.abstract	The aim of this study was to examine Y3Al5O12:Ce (also known as YAG:Ce) powder scintillator under X-ray imaging conditions. This material shows a very fast scintillation decay time and it has never been used in X-ray medical imaging. In the present study various scintillator layers (screens) with coating thickness ranging from 13 to 166 mg/cm2 were prepared in our laboratory by sedimentation of Y3Al5O12: Ce powder. Optical emission spectra and light emission efficiency (spectrum area over X-ray exposure) of the layers were measured under X-ray excitation using X-ray tube voltages (80–120 kVp) often employed in general medical radiography and fluoroscopy. Spectral compatibility with various optical photon detectors (photodiodes, photocathodes, charge coupled devices, films) and intrinsic conversion efficiency values were determined using emission spectrum data. In addition, parameters related to X-ray detection, energy absorption efficiency and K-fluorescence characteristic emission were calculated. A theoretical model describing radiation and light transfer through scattering media was used to fit experimental data. Intrinsic conversion efficiency (ηC≈0.03–0.05) and light attenuation coefficients View the MathML source were derived through this fitting. Y3Al5O12:Ce showed peak emission in the wavelength range 530–550 nm. The light emission efficiency was found to be maximum for the 107 mg/cm2 layer. Due to its “green” emission spectrum, Y3Al5O12:Ce showed excellent compatibility (of the order of 0.9) with the sensitivity of many currently used photodetectors. Taking into account its very fast response Y3Al5O12:Ce could be considered for application in X-ray imaging especially in various digital detectors.	en
heal.publisher	Elsevier Science Ltd	en
heal.journalName	Nuclear Instruments and Methods in Physics Research A	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true