Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4320
Title: Evaluation of the imaging performance of LSO powder scintillator for use in X-ray mammography
Authors: Μιχαήλ, Χρήστος Μ.
Ντάβιντ, Στράτος Λ.
Λιαπαρίνος, Παναγιώτης Φ.
Βαλαής, Ιωάννης Γ.
Νικολόπουλος, Δημήτριος Σ.
Contributors: Καλύβας, Νεκτάριος Ι.
Τουτουντζής, Ανδριανός Ε.
Κάβουρας, Διονύσης Α.
Κανδαράκης, Ιωάννης Σ.
Παναγιωτάκης, Γεώργιος Σ.
Item type: Journal article
Keywords: X-ray imaging;Phosphor screens;Απεικόνιση με ακτίνες Χ;Οθόνες φωσφόρου
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 evaluate the imaging performance of Lu2SiO5:Ce (LSO:Ce) powder scintillator for use in X-ray detectors used in mammography. LSO:Ce scintillator is a high efficiency, fast emitting material, which in single-crystal form is used in positron emission tomography detectors. A scintillating screen, with a coating thickness of 25 mg/cm2, was prepared in our laboratory from commercially available LSO:Ce powder (Phosphor Technology Ltd.). The imaging performance of the screen was assessed by experimental determination of the modulation transfer function (MTF) and the noise transfer function (NTF). Experimental MTF values were compared to data obtained by a custom Monte Carlo simulation program. Screen irradiation was performed under exposure conditions employed in mammographic applications (27 kVp, 63 mAs). MTF was determined by the Square Wave Response Function (SWRF) method whereas NTF was estimated by Noise Power Spectrum (NPS) measurements, under uniform screen irradiation. Our results showed that LSO:Ce exhibits high MTF, which is comparable to that of the commercially used Gd2O2S:Tb powder scintillator. Considering our MTF results and the fast response of LSO:Ce scintillator screen (40 ns), this material can be considered for use in X-ray mammographic detectors.
Description: Proceedings of the 10 th International Symposium on Radiation Physics-ISRP 10
Language: English
Citation: Michail, C., David, S., Liaparinos, P., Valais, I., Nikolopoulos, D., et al. (September 2007). Evaluation of the imaging performance of LSO powder scintillator for use in X-ray mammography. Nuclear Instruments and Methods in Physics Research A. 580(1). pp. 558–561. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 24/05/2007]
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/11400/4320
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