Assessment of the gain transfer function (GTF) of phosphors for application in medical imaging radiation detectors

dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Μαρής, Θωμάς	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-05-05T11:32:26Z
dc.date.available	2015-05-05T11:32:26Z
dc.date.issued	2015-05-05
dc.identifier.uri	http://hdl.handle.net/11400/9735
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.ejradiology.com/article/S0720-048X(99)00106-0/abstract	en
dc.source	http://www.sciencedirect.com/science/article/pii/S0720048X99001060	en
dc.subject	Phosphors
dc.subject	Spectral compatibility
dc.subject	Φωσφορίζουσες
dc.subject	Φασματική συμβατότητα
dc.title	Assessment of the gain transfer function (GTF) of phosphors for application in medical imaging radiation detectors	el
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.keywordURI	http://id.loc.gov/authorities/subjects/sh85101117
heal.identifier.secondary	DOI: http://dx.doi.org/10.1016/S0720-048X(99)00106-0
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2000
heal.bibliographicCitation	Cavouras, D., Kandarakis, I., Maris, T., Panayiotakis, G. and Nomicos, C. (July 2000). Assessment of the gain transfer function (GTF) of phosphors for application in medical imaging radiation detectors. European Journal of Radiology. 35(1). pp. 70-77. Elsevier: 2000. Available from: http://www.sciencedirect.com/science/article/pii/S0720048X99001060 [Accessed 03/08/2000]	en
heal.abstract	Objective: to study various phosphors used in detectors of medical imaging systems by the gain transfer function (GTF), defined in terms of X-ray luminescence efficiency, light spectrum and modulation transfer function. Materials and methods: four phosphor materials, La2O2S:Tb, Y2O2S:Tb, Y2O2S:Eu and Y2O3:Eu were used in the form of fluorescent layers prepared in the laboratory. The GTF was determined at 30 kVp and 80 kVp X-ray tube voltages for various phosphor coating weights. Results: La2O2S:Tb, which was the highest density and effective atomic number phosphor used, was found to exhibit the best GTF performance at 80 kVp. At 30 kVp, the yttrium based phosphors were found of increased performance. This is mainly due to the proximity of the X-ray energy to the K-absorption edge of yttrium at 17 keV. Europium activated phosphors were found to perform very well when combined with the red sensitive film and the silicon photodiode. Conclusion: The GTF may be a useful method for comparing and selecting phosphor materials for use in various medical imaging applications.	en
heal.publisher	Elsevier	en
heal.journalName	European Journal of Radiology	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true