Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4316
Title: Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions
Authors: Ντάβιντ, Στράτος Λ.
Μιχαήλ, Χρήστος Μ.
Βαλαής, Ιωάννης Γ.
Νικολόπουλος, Δημήτριος Σ.
Λιαπαρίνος, Παναγιώτης Φ.
Contributors: Καλύβας, Νεκτάριος Ι.
Καλατζής, Ιωάννης
Τουτουντζής, Ανδριανός Ε.
Ευθυμίου, Ελευθερία - Ειρήνη
Λουντός, Γεώργιος
Σιανούδης, Ιωάννης Α.
Κάβουρας, Διονύσης Α.
Δημητρόπουλος, Νικόλαος
Νομικός, Κωνσταντίνος Δ.
Κανδαράκης, Ιωάννης Σ.
Παναγιωτάκης, Γεώργιος Σ.
Item type: Journal article
Keywords: Inorganic scintillators;Nuclear counters;Ανόργανοι σπινθηριστές;Ανιχνευτές ακτινοβολίας
Subjects: Medicine
Physics
Ιατρική
Φυσική
Issue Date: 20-Jan-2015
2007
Date of availability: 20-Jan-2015
Publisher: Elsevier Science Ltd
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/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 (22–49 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.
Description: Proceedings of the 1st International Conference on Molecular Imaging Technology - EuroMedIm 2006
Language: English
Citation: David, S., Michail, C., Valais, I., Nikolopoulos, D., Liaparinos, P., et al. (February 2007). Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions. Nuclear Instruments and Methods in Physics Research A. 571(1-2). pp. 346–349. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 13/11/2006]
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/11400/4316
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