Imaging properties of cerium doped Yttrium Aluminum Oxide (YAP:Ce) powder scintillating screens under X-ray excitation

Kalivas, N; Valais, I; Salemis, G; Karagiannis, C; Konstantinidis, A; Nikolopoulos, D; Loudos, G; Sakelios, N; Karakatsanis, N; Nikita, K; Gayshan, VL; Gektin, AV; Sianoudis, I; Giokaris, N; Nomicos, CD; Dimitropoulos, N; Cavouras, D; Panayiotakis, G; Kandarakis, I

dc.contributor.author	Kalivas, N	en
dc.contributor.author	Valais, I	en
dc.contributor.author	Salemis, G	en
dc.contributor.author	Karagiannis, C	en
dc.contributor.author	Konstantinidis, A	en
dc.contributor.author	Nikolopoulos, D	en
dc.contributor.author	Loudos, G	en
dc.contributor.author	Sakelios, N	en
dc.contributor.author	Karakatsanis, N	en
dc.contributor.author	Nikita, K	en
dc.contributor.author	Gayshan, VL	en
dc.contributor.author	Gektin, AV	en
dc.contributor.author	Sianoudis, I	en
dc.contributor.author	Giokaris, N	en
dc.contributor.author	Nomicos, CD	en
dc.contributor.author	Dimitropoulos, N	en
dc.contributor.author	Cavouras, D	en
dc.contributor.author	Panayiotakis, G	en
dc.contributor.author	Kandarakis, I	en
dc.date.accessioned	2014-03-01T01:24:30Z
dc.date.available	2014-03-01T01:24:30Z
dc.date.issued	2006	en
dc.identifier.issn	0168-9002	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17290
dc.subject	CsI	en
dc.subject	Image quality	en
dc.subject	Radiation detectors	en
dc.subject	Scintillators	en
dc.subject	YAP:Ce	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	Alumina	en
dc.subject.other	Cerium	en
dc.subject.other	Diagnostic radiography	en
dc.subject.other	Doping (additives)	en
dc.subject.other	Image quality	en
dc.subject.other	Radiation detectors	en
dc.subject.other	Scintillation	en
dc.subject.other	Signal to noise ratio	en
dc.subject.other	Yttrium compounds	en
dc.subject.other	Edge spread function (ESF)	en
dc.subject.other	Imaging properties	en
dc.subject.other	Noise power spectrum (NPS)	en
dc.subject.other	Scintillating screens	en
dc.subject.other	Medical imaging	en
dc.title	Imaging properties of cerium doped Yttrium Aluminum Oxide (YAP:Ce) powder scintillating screens under X-ray excitation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.nima.2006.08.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.nima.2006.08.020	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The aim of the present study was to evaluate the imaging performance of YAP:Ce powder scintillating screens under exposure conditions employed in diagnostic radiology (50-140 kV). Various screens were prepared in our laboratory from YAP: Cc powder (Phosphor Technology, Ltd.), with coating thickness ranging from 53 to 110 mg/cm(2). The imaging performance of the screens was assessed by experimental determination of the modulation transfer function (MTF) and the noise transfer function (NTF). MTF was determined by the edge spread function (ESF) method while NTF was estimated by noise power spectrum (NPS) measurements after uniform screen irradiation. In addition, parameters related to overall image quality, such as the signal-to-noise ratio transfer (MTF/NTF), were estimated. WE curves were affected by the beam hardening effects caused by the patient simulating 20 mm thick aluminum phantom. Under these conditions MTF values were found to increase with the mean X-ray photon energy. A similar effect was observed for NTF curves. Results were compared with data obtained on CsI:Tl scintillator. Taking into consideration the very fast response of YAP:Ce, these data may be of interest in designing X-ray imaging detectors. (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.2006.08.020	en
dc.identifier.isi	ISI:000243241300015	en
dc.identifier.volume	569	en
dc.identifier.issue	2 SPEC. ISS.	en
dc.identifier.spage	210	en
dc.identifier.epage	214	en