Show simple item record Κανδαράκης, Ιωάννης Σ. el Κάβουρας, Διονύσης Α. el Σιανούδης, Ιωάννης Α. el Νικολόπουλος, Δημήτριος Σ. el Επισκοπάκης, Α. el 2015-01-19T14:34:11Z 2015-01-19T14:34:11Z 2015-01-19
dc.rights Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες *
dc.rights.uri *
dc.source 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 **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: [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

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Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες Except where otherwise noted, this item's license is described as Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες