An evaluation of the Y2O3:Eu3+ scintillator for application in medical X-ray detectors and image receptors

dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Ευαγγέλου, Ευάγγελος Κ.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-05-04T09:23:07Z
dc.date.available	2015-05-04T09:23:07Z
dc.date.issued	2015-05-04
dc.identifier.uri	http://hdl.handle.net/11400/9619
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://scitation.aip.org/content/aapm/journal/medphys/23/12/10.1118/1.597769	en
dc.subject	Spectral matching
dc.subject	X-ray screens
dc.subject	Φασματική αντιστοιχία
dc.subject	Οθόνες X-ray
dc.title	An evaluation of the Y2O3:Eu3+ scintillator for application in medical X-ray detectors and image receptors	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Biomedical engineering
heal.classification	Ιατρική
heal.classification	Βιοϊατρική τεχνολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85014237
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Βιοϊατρική τεχνολογία
heal.identifier.secondary	http://dx.doi.org/10.1118/1.597769
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	1996
heal.bibliographicCitation	Cavouras, D., Kandarakis, I., Panayiotakis, G., Evangelou, E. and Nomicos, C. (1996). An evaluation of the Y2O3:Eu3+ scintillator for application in medical X-ray detectors and image receptors. Medical Physics. 23(12). pp. 1965-1975. American Association of Physicists in Medicine: 1996. Available from: http://scitation.aip.org/content/aapm/journal/medphys/23/12/10.1118/1.597769	en
heal.abstract	The suitability of a Y2O3:Eu3+ scintillator for use in radiation detectors and medical image receptors was studied. Y2O3:Eu3+ was used in the form of laboratory prepared screens of different coating thicknesses. The x‐ray luminescence efficiency of the screens was measured for tube voltages between 50–200 kVp and in both transmission and reflection modes of observation. The intrinsic x ray to light conversion efficiency (n c ) and other parameters of the Y2O3:Eu3+phosphor material related to optical scattering, absorption, and reflection were determined. These were used in the calculation of the image transfer characteristics, MTF and zero frequency DQE, for various screen coating thicknesses and x‐ray tube voltages. The light emission spectrum of Y2O3:Eu3+ was measured (narrow band peak at 613 nm) and its spectral compatibility to the spectral sensitivity of several commonly employed optical photon detectors was determined. The x‐ray luminescence efficiency varied with x‐ray tube voltage, attaining maximum value at about 80 kVp for all screen thicknesses. It also varied with coating thickness reaching 25 μW m−2/mR s−1 and 18 μW m−2/mR s−1 at 175 mg/cm2 for reflection and transmission modes, respectively. The intrinsic x ray to light conversion efficiency and the image transfer characteristics were found to be comparable to several commercially used phosphors:n c =0.095, MTF0.05 ranged between 10 and 25 line pairs per mm and peak values of DQE(0) varied between 0.33 and 0.14 in the coating thickness and kVp ranges useful for x‐ray imaging.Spectral compatibility to some red sensitive optical photon detectors was excellent (0.9 or better). Results indicated that Y2O3:Eu3+ is a medium to high overall performance material that could be used in medical x‐ray detectors and image receptors.	en
heal.publisher	American Association of Physicists in Medicine	en
heal.journalName	Medical Physics	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true