Luminescence properties of (Lu, Y)2SiO5: 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	2014-03-01T01:26:34Z
dc.date.available	2014-03-01T01:26:34Z
dc.date.issued	2007	en
dc.identifier.issn	00189499	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18134
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.other	Cerium compounds	en
dc.subject.other	Light emission	en
dc.subject.other	Luminescence	en
dc.subject.other	Pattern matching	en
dc.subject.other	Phosphors	en
dc.subject.other	Radiation detectors	en
dc.subject.other	Single crystals	en
dc.subject.other	Inorganic scintillators	en
dc.subject.other	Light emission spectrum	en
dc.subject.other	Luminescence efficiency (LE)	en
dc.subject.other	X ray excitation	en
dc.subject.other	X ray imaging	en
dc.subject.other	Medical imaging	en
dc.title	Luminescence properties of (Lu, Y)2SiO5: Ce and Gd2SiO5: Ce single crystal scintillators under X-ray excitation for use in medical imaging systems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TNS.2006.888813	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TNS.2006.888813	en
heal.publicationDate	2007	en
heal.abstract	The luminescence of (Lu, Y)2SiO5 : Ce (LYSO:Ce) 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/cm3 and 6.71 g/cm3 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. © 2007 IEEE.	en
heal.journalName	IEEE Transactions on Nuclear Science	en
dc.identifier.doi	10.1109/TNS.2006.888813	en
dc.identifier.volume	54	en
dc.identifier.issue	1	en
dc.identifier.spage	11	en
dc.identifier.epage	18	en