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Title: Thin substrate powder scintillator screens for use in digital X-ray medical imaging applications
Authors: Βαλαής, Ιωάννης Γ.
Φούντος, Γεώργιος Π.
Μιχαήλ, Χρήστος Μ.
Σεφέρης, Ιωάννης Ε.
Καλύβας, Νεκτάριος Ι.
Contributors: Μυταφίδης, Αλέξανδρος Κ.
Κανδαράκης, Ιωάννης Σ.
Παναγιωτάκης, Γεώργιος Σ.
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Borosilicate glasses;Diagnostic radiography;Βοριοπυριτικά γυαλιά;Διαγνωστική ακτινογραφία
Subjects: Medicine
Medical technology
Ιατρική τεχνολογία
Issue Date: 21-Jan-2015
Publisher: IEEE
Abstract: The aim of the present study is to investigate the absolute luminescence efficiency (AE) and the effective luminescence efficiency (EE) of thin substrate Gd2O2S:Eu powder scintillating screens, for possible use in digital radiography detectors. To this aim two relatively thin screens with thicknesses (coating density) 32.1 mg/cm2 and 64.9 mg/cm2 were prepared on Borosilicate glass substrate 22×22 mm2. For the determination of the AE, X-ray tube voltages ranging from 50 to 133 kVp were used. The effective efficiency was examined for four optical sensors, currently adapted in diagnostic medical systems, namely S100AB SITe, passivated a-Si:H photodiode, CMOS hybrid with blue AR coating and CMOS RadEye photodiode array. The absolute luminescence efficiency of the thin substrate Gd2O2S:Eu powder phosphors was relatively high. The spectral compatibility and the overall efficiency (effective efficiency) with the optical detectors examined in our study was higher than that of a corresponding thickness Gd2O2S:Tb powder phosphors. Our preliminary results indicate that thin substrate Gd2O2S:Eu powder phosphors can be used adequately with detectors for digital X-ray Imaging.
Language: English
Citation: Valais, I., Fountos, G., Michail, C., Seferis, I., Kalyvas, N., et al. (October 2011). Thin substrate powder scintillator screens for use in digital X-ray medical imaging applications. In the Nuclear Science Symposium and Medical Imaging Conference. Valencia, 23th-29th October 2011. pp. 2997 - 3000. IEEE.
Conference: Nuclear Science Symposium and Medical Imaging Conference
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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