Luminescence properties of (Lu,Y)(2)SiO5 : Ce and Gd2SiO5 : Ce single crystal scintillators under X-ray excitation for use in medical imaging systems

Valais, IG; Kandarakis, IS; Nikolopoulos, DN; Michail, CM; David, SL; Loudos, GK; Cavouras, DA; Panayiotakis, GS

dc.contributor.author	Valais, IG	en
dc.contributor.author	Kandarakis, IS	en
dc.contributor.author	Nikolopoulos, DN	en
dc.contributor.author	Michail, CM	en
dc.contributor.author	David, SL	en
dc.contributor.author	Loudos, GK	en
dc.contributor.author	Cavouras, DA	en
dc.contributor.author	Panayiotakis, GS	en
dc.date.accessioned	2014-03-01T01:56:30Z
dc.date.available	2014-03-01T01:56:30Z
dc.date.issued	2007	en
dc.identifier.issn	0018-9499	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28131
dc.subject	inorganic scintillators	en
dc.subject	luminescence efficiency	en
dc.subject	LYSO : Ce	en
dc.subject	matching factor	en
dc.subject	radiation detectors	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.other	ENERGY RESOLUTION	en
dc.subject.other	EFFICIENCY	en
dc.subject.other	DETECTORS	en
dc.subject.other	GD2O2S-TB	en
dc.subject.other	SPECTRA	en
dc.subject.other	SCREENS	en
dc.subject.other	LYSO	en
dc.subject.other	LSO	en
dc.subject.other	GSO	en
dc.title	Luminescence properties of (Lu,Y)(2)SiO5 : Ce and Gd2SiO5 : Ce single crystal scintillators under X-ray excitation for use in medical imaging systems	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The luminescence of (Lu, Y)(2) SiOr(5) : Ce (LYSO:iCe) and Gd2SiO5 : Ce (GSO:Ce) crystals was studied for use in tomographic medical x-ray imaging. LYSO:Ce and GSO:Ce are high density (7.1 g/cm(3) and 6.71 g /cm(3) respectively), high atomic number (71 for Lu and 64 for Gd), non-hydroscopic, and short decay time (40 ns and 60 ns respectively) scintillators. Evaluation was performed by determining: 1) the luminescence efficiency (LE) (emitted light energy flux over incident x-ray energy flux) in x-ray energies employed in general x-ray imaging (40-140 kVp) and in mammographic x-ray imaging (22-49 kVp), 2) the light emission spectrum, determined at various x-ray energies (22-140 kVp), and 3) the spectral compatibility to optical photon detectors, incorporated in medical imaging systems. Both scintillation materials exhibited adequately high LE in the x-ray diagnostic energy range, with LYSO:Ce's LE being distinctively higher. LYSO:Ce and GSO:Ce were found most compatible with the S-20 photocathode (0.9 for both materials) and adequately compatible to the amorphous silicon photodiode (0.74 for both materials), incorporated in many digital x-ray detectors.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE TRANSACTIONS ON NUCLEAR SCIENCE	en
dc.identifier.isi	ISI:000244311600002	en
dc.identifier.volume	54	en
dc.identifier.issue	1	en
dc.identifier.spage	11	en
dc.identifier.epage	18	en