Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4423
Title: X-ray image degradation passing through thin glass substrate
Authors: Σεφέρης, Ιωάννης Ε.
Μιχαήλ, Χρήστος Μ.
Βαλαής, Ιωάννης Γ.
Φούντος, Γεώργιος Π.
Καλύβας, Νεκτάριος Ι.
Contributors: Στρωματία, Φωτεινή
Κανδαράκης, Ιωάννης Σ.
Παναγιωτάκης, Γεώργιος Σ.
Item type: Journal article
Keywords: Image degradation;Scintillating screen;Υποβάθμιση εικόνας;Σπινθηρίζον οθόνη
Subjects: Medicine
Medical technology
Ιατρική
Ιατρική τεχνολογία
Issue Date: 21-Jan-2015
2012
Date of availability: 21-Jan-2015
Publisher: [χ.ό.]
Abstract: The degradation of X-ray image passing through thin glass substrate was experimentally investigated in term of modulation transfer function (MTF). The screen was prepared by sedimentation of the powder phosphor (Gd2O2S:Eu) on thin glass substrate with thickness 140 m (Waldemar Knittel- GmbH). The experiment was carried out under X-ray mammographic conditions. The beam quality was 28 kV, 60 mAs, with W/Rh target/filter combination. The screen was coupled to an optical readout device including a CMOS remote RadEye HR photodiode pixel array. Results showed that there is a 40% degradation of the MTF on average, in the whole spatial frequency range, due to the glass substrate. The glass substrate has a low impact on resolution of the image at low frequencies (12% on average, up to 2.7 cy/mm) and a high impact at medium and high frequencies (70% on average).
Description: Workshop on Bio-Medical Instrumentation and related Engineering And Physical Sciences
Language: English
Citation: Seferis, I., Michail, C., Valais, I., Fountos, G., Kalyvas, N., et al. (2012). X-ray image degradation passing through thin glass substrate. e-Journal of Science & Technology. 7(3). pp. 29-31. Available from: http://e-jst.teiath.gr
Journal: e-Περιοδικό Επιστήμης & Τεχνολογίας
e-Journal of Science & Technology
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/11400/4423
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