Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4119
Title: Optical gain signal-to-noise ratio transfer efficiency as an index for ranking of phosphorphotodetector combinations used in X-ray medical imaging
Authors: Καλύβας, Νεκτάριος Ι.
Κωσταρίδου, Ελένη
Κανδαράκης, Ιωάννης Σ.
Κάβουρας, Διονύσης Α.
Νομικός, Κωνσταντίνος Δ.
Contributors: Παναγιωτάκης, Γεώργιος Σ.
Item type: Journal article
Keywords: Phosphor materials;Radiographic film;Φωσφορούχα υλικά;Ακτινογραφικό φιλμ
Subjects: Medicine
Medicine, Physical
Ιατρική
Φυσική ιατρική
Issue Date: 16-Jan-2015
2004
Date of availability: 16-Jan-2015
Publisher: Springer-Verlag
Abstract: Phosphor materials are used in medical imaging combined with radiographic film or other photodetectors. A parameter for choosing a phosphor material is the number of light photons produced per absorbed X-ray energy E, i.e. phosphor gain. Traditionally, a parameter for choosing the best photodetector for a phosphor material is the spectral matching factor, which denotes the percentage of the optical photons detected by the photodetector. However, this factor does not account for the phosphor gain neither in terms of signal strength nor in terms of noise. In this paper a new factor is introduced which evaluates phosphor-photodetector combinations in terms of optical gain signal-to-noise ratio matching. The proposed factor was implemented to some phosphor-photodetector combinations. It was found that for the narrow band emitting phosphors studied the results of the new factor and the matching factor were numerically the same. However, when not narrow bandwidth emitting phosphors were considered the results were numerically different. Additionally, for the case of CsI:Na phosphor different results were obtained in combinations ranking.
Language: English
Citation: Kalivas, N., Costaridou, L., Kandarakis, I., Cavouras, D., Nomicos, C., et al. (March 2004). Optical gain signal-to-noise ratio transfer efficiency as an index for ranking of phosphorphotodetector combinations used in X-ray medical imaging. Applied Physics A. 78(6). pp. 915-919. Springer-Verlag. Available from: http://link.springer.com
Journal: Applied Physics 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/11400/4119
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