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Title: Imaging properties of GdAIO3:Ce (GAP:Ce) powder scintillator
Authors: Τουτουντζής, Ανδριανός
Μιχαήλ, Χρήστος Μ.
Δαυίδ, Στράτος
Βαλαής, Ιωάννης Γ.
Νικολόπουλος, Δημήτριος
Contributors: Δημητρόπουλος, Νικόλαος
Κάβουρας, Διονύσης Α.
Παναγιωτάκης, Γιώργος Σ.
Κανδαράκης, Ιωάννης
Item type: Conference publication
Conference Item Type: Abstract
Keywords: Σπινθηριστές;Ανιχνευτές ακτινοβολίας;Scintillators;QDE;EAE;Radiation detectors;GdAlO3:Ce
Subjects: Medicine
Issue Date: 28-Apr-2015
Date of availability: 28-Apr-2015
Abstract: The aim of this study was to evaluate the performance of GdAlO3:Ce powder scintillator screens for use in medical imaging applications. This powder phosphor, also known as GAP:Ce scintillator, is a nonhygroscopic material, emitting blue light with short decay time and it has never been used in medical imaging. Various scintillator screens with coating thickness, ranging from 14.7 to 121.1 mg/cm2, were prepared in our laboratory from GdAlO3:Ce powder (Phosphor Technology, Ltd) by sedimentation on silica substrates. Quantum Detection Efficiency (QDE) and Energy Absorption Efficiency (EAE) were evaluated. Absolute luminescence efficiency measurements were performed under exposure conditions employed in diagnostic radiology (50-140 kV, 63 mAs), using an experimental setup based on a photomultiplier tube. The emission spectrum of GAP:Ce, after calculating the matching factor, was found compatible with various existing optical detectors. QDE and EAE of GAP, comparing to YAP has exhibited higher values. Absolute Efficiency values were found to increase with increasing X-ray tube voltage. Although for values higher than 120 kV a decrease was observed.
Language: English
Citation: Toutountzis, A., Michail, C., David, S., Nikolopoulos, D., Valais, I. e.t. (2006) Imaging properties of GdAIO3:Ce (GAP:Ce) powder scintillator. In 2nd International conference ‘’From scientific computing to computational engineering. Athens, Greece, 5-8 July 2006. pp.1-2.
Conference: 2nd International conference ‘’From scientific computing to computational engineering
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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