A comparative investigation of
Lu2SiO5:Ce and Gd2O2S:eu powder scintillators for use in x-ray mammography detectors

dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Φούντος, Γεώργιος Π.	el
dc.contributor.author	Ντάβιντ, Στράτος Λ.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Τουτουντζής, Ανδριανός Ε.	el
dc.date.accessioned	2015-01-19T12:34:47Z
dc.date.available	2015-01-19T12:34:47Z
dc.date.issued	2015-01-19
dc.identifier.uri	http://hdl.handle.net/11400/4254
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://iopscience.iop.org/	en
dc.subject	X-ray mammography
dc.subject	Nuclear counters
dc.subject	Μαστογραφία με ακτίνες Χ
dc.subject	Ανιχνευτές ακτινοβολίας
dc.title	A comparative investigation of Lu2SiO5:Ce and Gd2O2S:eu powder scintillators for use in x-ray mammography detectors	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.keywordURI	http://id.loc.gov/authorities/subjects/sh85092953
heal.contributorName	Καλύβας, Νεκτάριος Ι.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	doi:10.1088/0957-0233/20/10/104008
heal.language	en
heal.access	free
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2009
heal.bibliographicCitation	Michail, C., Fountos, G., David, S., Valais, I., Toutountzis, A., et al. (October 2009). A comparative investigation of Lu2SiO5:Ce and Gd2O2S:eu powder scintillators for use in x-ray mammography detectors. Measurement Science and Technology. 20(10). pp. 1-9. IOP Publishing Ltd. Available from: http://iopscience.iop.org	en
heal.abstract	The dominant powder scintillator in most medical imaging modalities for decades has been Gd2O2S:Tb due to the very good intrinsic properties and overall efficiency. Apart from Gd2O2S:Tb, there are alternative powder phosphor scintillators such as Lu2SiO5:Ce and Gd2O2S:Eu that have been suggested for use in various medical imaging modalities. Gd2O2S:Eu emits red light and can be combined mainly with digital mammography detectors such as CCDs. Lu2SiO5:Ce emits blue light and can be combined with blue sensitivity films, photocathodes and some photodiodes. For the purposes of the present study, two scintillating screens, one from Lu2SiO5:Ce and the other from Gd2O2S:Eu powders, were prepared using the method of sedimentation. The screen coating thicknesses were 25.0 and 33.1 mg cm−2 respectively. The screens were investigated by evaluating the following parameters: the output signal, the modulation transfer function, the noise equivalent passband, the informational efficiency, the quantum detection efficiency and the zero-frequency detective quantum efficiency. Furthermore, the spectral compatibility of those materials with various optical detectors was determined. Results were compared to published data for the commercially employed 'Kodak Min-R film-screen system', based on a 31.7 mg cm−2 thick Gd2O2S:Tb phosphor. For Gd2O2S:Eu, MTF data were found comparable to those of Gd2O2S:Tb, while the MTF of Lu2SiO5:Ce was even higher resulting in better spatial resolution and image sharpness properties. On the other hand, Gd2O2S:Eu was found to exhibit higher output signal and zero-frequency detective quantum efficiency than Lu2SiO5:Ce.	en
heal.publisher	IOP Publishing Ltd	en
heal.journalName	Measurement Science and Technology	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true