Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/9217
Title: Determination of the radiation absorption and light emission properties of Lu2SiO5:Ce (LSO) powder phosphor using computational model and experimental techniques in mammography
Authors: Μιχαήλ, Χρήστος Μ.
Δαυίδ, Στράτος
Νικολόπουλος, Δημήτριος
Δημητρόπουλος, Νικόλαος
Τουτουντζής, Ανδριανός
Contributors: Λιαπαρινός, Παναγιώτης Φ.
Νομικός, Κωνσταντίνος Δ.
Κάβουρας, Διονύσης Α.
Βαλαής, Ιωάννης
Παναγιωτάκης, Γιώργος Σ.
Κανδαράκης, Ιωάννης
Item type: Conference publication
Conference Item Type: Abstract
Keywords: Inorganic scintillators;Ανόργανοι σπινθηριστές;Ανιχνευτές ακτινοβολίας;Απόδοση φωτοβολίας;Radiation detectors;Luminescence efficiency
Subjects: Medicine
Physics
Ιατρική
Φυσική
Issue Date: 28-Apr-2015
Jul-2006
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. LSO is an efficient and extremely fast scintillator, employed in positron tomography, which however has never been used in X-ray imaging. For the purposes of the present study a 25 mg/cm2 thick scintillating screen was prepared in our laboratory, by sedimentation of Lu2SiO5:Ce powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-40 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency and the quantum detective efficiency 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 Lu2SiO5:Ce powder scintillator material showed to exhibit high radiation absorption properties in comparison with Gd2O2S:Tb and CsI:Tl and considering its very short decay time, it may successfully be employed in digital mammography.
Language: English
Citation: Michail, C., David, S., Valais, I., Nikolopoulos, D., Liaparinos, P., (2006) Determination of the radiation absorption and light emission properties of Lu2SiO5:Ce (LSO) powder phosphor using computational model and experimental techniques in mammography. In 2nd International conference “From scientific computing to computational engineering’’ . Athens, Greece, 5-8 July 2006. pp.1-2.
Conference: In 2nd International conference “From scientific computing to computational engineering’’
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/9217
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