Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions

David, S; Michail, C; Valais, I; Nikolopoulos, D; Liaparinos, P; Kalivas, N; Kalatzis, I; Toutountzis, A; Efthimiou, N; Loudos, G; Sianoudis, I; Cavouras, D; Dimitropoulos, N; Nomicos, CD; Kandarakis, I; Panayiotakis, GS

dc.contributor.author	David, S	en
dc.contributor.author	Michail, C	en
dc.contributor.author	Valais, I	en
dc.contributor.author	Nikolopoulos, D	en
dc.contributor.author	Liaparinos, P	en
dc.contributor.author	Kalivas, N	en
dc.contributor.author	Kalatzis, I	en
dc.contributor.author	Toutountzis, A	en
dc.contributor.author	Efthimiou, N	en
dc.contributor.author	Loudos, G	en
dc.contributor.author	Sianoudis, I	en
dc.contributor.author	Cavouras, D	en
dc.contributor.author	Dimitropoulos, N	en
dc.contributor.author	Nomicos, CD	en
dc.contributor.author	Kandarakis, I	en
dc.contributor.author	Panayiotakis, GS	en
dc.date.accessioned	2014-03-01T01:26:16Z
dc.date.available	2014-03-01T01:26:16Z
dc.date.issued	2007	en
dc.identifier.issn	0168-9002	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17973
dc.subject	Inorganic scintillators	en
dc.subject	LSO:Ce	en
dc.subject	Luminescence efficiency	en
dc.subject	Radiation detectors	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.classification	Spectroscopy	en
dc.subject.other	Energy absorption	en
dc.subject.other	Light emission	en
dc.subject.other	Luminescence	en
dc.subject.other	Lutetium compounds	en
dc.subject.other	Mammography	en
dc.subject.other	Radiation detectors	en
dc.subject.other	Scintillation	en
dc.subject.other	Sedimentation	en
dc.subject.other	Inorganic scintillators	en
dc.subject.other	Light converters	en
dc.subject.other	Quantum detection efficiency (QDE)	en
dc.subject.other	X ray imaging	en
dc.subject.other	Phosphors	en
dc.title	Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.nima.2006.10.106	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.nima.2006.10.106	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The aim of the present study was to examine the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under X-ray mammographic imaging conditions. Powder LSO scintillator has never been used in X-ray imaging. For the purposes of the present study, a 25 mg/cm(2) thick scintillating screen was prepared in our laboratory, by sedimentation of Lu2SiO5:CC powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-49 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency (EAE) and the quantum detection efficiency (QDE) were calculated. A theoretical model, describing radiation and light transfer, was employed to fit experimental data and to estimate values of the intrinsic conversion efficiency and the light attenuation coefficients of the screen. The spectral compatibility of the LSO powder scintillator to mammographic X-ray films and to various electronic optical detectors was determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of the optical detectors. Results in the voltage range used in mammography showed that Lu2SiO5:Ce powder scintillator has approximately 10% higher values of QDE and 4.5% higher values of EAE than Gd2O2S:Tb. (c) 2006 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment	en
dc.identifier.doi	10.1016/j.nima.2006.10.106	en
dc.identifier.isi	ISI:000244599100083	en
dc.identifier.volume	571	en
dc.identifier.issue	1-2 SPEC. ISS.	en
dc.identifier.spage	346	en
dc.identifier.epage	349	en