Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4312
Title: Imaging properties of cerium doped Yttrium Aluminum Oxide (YAP:Ce) powder scintillating screens under X-ray excitation
Authors: Καλύβας, Νεκτάριος Ι.
Βαλαής, Ιωάννης Γ.
Σαλεμής, Γεώργιος
Καραγιάννης, Κωνσταντίνος
Κωνσταντινίδης, Αναστάσιος Χ.
Contributors: Νικολόπουλος, Δημήτριος Σ.
Λουντός, Γεώργιος
Σακελιός, Ν.
Σαρακατσάνης, Νικόλας Α.
Νικήτα, Κωνσταντίνα Σ.
Σιανούδης, Ιωάννης Α.
Γιόκαρης, Νικόλαος
Νομικός, Κωνσταντίνος Δ.
Δημητρόπουλος, Νικόλαος
Κάβουρας, Διονύσης Α.
Παναγιωτάκης, Γεώργιος Σ.
Κανδαράκης, Ιωάννης Σ.
Gayshan, Vadim L.
Gektin, A. V.
Item type: Journal article
Keywords: Imaging systems--Image quality--Congresses;Nuclear counters;Ποιότητα εικόνας;Ανιχνευτές ακτινοβολίας
Subjects: Medicine
Physics
Ιατρική
Φυσική
Issue Date: 20-Jan-2015
2006
Date of availability: 20-Jan-2015
Publisher: Elsevier Science Ltd
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: Ce powder (Phosphor Technology, Ltd.), with coating thickness ranging from 53 to 110 mg/cm2. 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. MTF 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.
Description: Proceedings of the 3rd International Conference on Imaging Technologies in Biomedical Sciences — Innovation in Nuclear and Radiological Imaging: from Basic Research to Clinical Application
Language: English
Citation: kalivas, N., Valais, I., Salemis, G., Karagiannis, C., Konstantinidis, A., et al. (December 2006). Imaging properties of cerium doped Yttrium Aluminum Oxide (YAP:Ce) powder scintillating screens under X-ray excitation. Nuclear Instruments and Methods in Physics Research A. 569(2). pp. 210–214. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 05/09/2006]
Journal: Nuclear Instruments and Methods in Physics Research A
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/4312
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