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Title: A theoretical model evaluating the angular distribution of luminescence emission in X-ray scintillating screens
Authors: Κανδαράκης, Ιωάννης Σ.
Κάβουρας, Διονύσης Α.
Νικολόπουλος, Δημήτριος Σ.
Επισκοπάκης, Α.
Καλύβας, Νεκτάριος Ι.
Contributors: Λαπαρίνος, Παναγιώτης
Βαλαής, Ιωάννης Γ.
Καγκάδης, Γεώργιος Χ.
Κουρκουτάς, Κωνσταντίνος Δ.
Σιανούδης, Ιωάννης Α.
Δημητρόπουλος, Νικόλαος
Νομικός, Κωνσταντίνος Δ.
Παναγιωτάκης, Γεώργιος Σ.
Item type: Journal article
Keywords: X-ray imaging;Angular distribution (Nuclear physics);Απεικόνιση με ακτίνες Χ;Γωνιακή κατανομή
Subjects: Medicine
Medicine, Physical
Ιατρική φυσική
Issue Date: 16-Jan-2015
Date of availability: 16-Jan-2015
Publisher: Elsevier Ltd
Abstract: The aim of this study was to examine the angular distribution of the light emitted from radiation-excited scintillators in medical imaging detectors. This distribution diverges from Lambert's cosine law and affects the light emission efficiency of scintillators, hence it also affects the dose burden to the patient. In the present study, the angular distribution was theoretically modeled and was used to fit experimental data on various scintillator materials. Results of calculations revealed that the angular distribution is more directional than that predicted by Lambert's law. Divergence from this law is more pronounced for high values of light attenuation coefficient and thick scintillator layers (screens). This type of divergence reduces light emission efficiency and hence it increases the incident X-ray flux required for a given level of image brightness.
Language: English
Citation: Kandarakis, A., Cavouras, D., Nikolopoulos, D., Episkopakis, A., Kalivas, N., et al. (April 2006). A theoretical model evaluating the angular distribution of luminescence emission in X-ray scintillating screens. Applied Radiation and Isotopes. 64(4). pp. 508–519. Elsevier Ltd. Available from: [Accessed 04/01/2006]
Journal: Applied Radiation and Isotopes
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
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