Integrated model for estimating phosphor signal and noise transfer characteristics on medical images

dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-05-05T12:49:12Z
dc.date.available	2015-05-05T12:49:12Z
dc.date.issued	2015-05-05
dc.identifier.uri	http://hdl.handle.net/11400/9742
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://link.springer.com/article/10.1007%2FBF02344207	en
dc.subject	X-ray imaging
dc.subject	Information capacity
dc.subject	Απεικόνιση με ακτίνες Χ
dc.subject	Πληροφοριακή ικανότητα
dc.title	Integrated model for estimating phosphor signal and noise transfer characteristics on medical images	en
heal.type	journalArticle
heal.secondaryTitle	application to CdPO3Cl:Mn phosphor screens	en
heal.classification	Science
heal.classification	Physics
heal.classification	Επιστήμες
heal.classification	Φυσική
heal.classificationURI	http://skos.um.es/unescothes/C03532
heal.classificationURI	http://skos.um.es/unescothes/C02994
heal.classificationURI	N/A-Επιστήμες
heal.classificationURI	N/A-Φυσική
heal.identifier.secondary	DOI 10.1007/BF02344207
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2002
heal.bibliographicCitation	Cavouras, D., Kandarakis, I., Panayiotakis, G. and Nomicos C. (2002). Integrated model for estimating phosphor signal and noise transfer characteristics on medical images: application to CdPO3Cl:Mn phosphor screens. Medical and Biological Engineering and Computing. 40(3). pp. 273-277. Springer-Verlag: 2002. Available from: http://link.springer.com/article/10.1007%2FBF02344207	en
heal.abstract	An integrated model describing the signal and noise transfer characteristics of the objective image quality and information content in phosphor-produced images is presented. In the context of this model, important imaging parameters, namely optical gain, modulation transfer function, noise transfer function, detective quantum efficiency and information capacity were experimentally evaluated using seven laboratory-prepared CdPO3Cl:Mn test phosphor screens of varying coating thickness. This phosphor has been previously shown to exhibit high spectral compatibility properties with the films and optical sensors used in digital imaging systems. Experiments were performed using 50–120 kVp X-rays produced by a medical X-ray unit. Results showed that, for thick screens, optical gain attained peak values close to 200 optical photons per incident X-ray at 50 kVp. The noise transfer function was higher than the modulation transfer function. For the thin screen of 21 mgcm−2, the modulation transfer function was 0.25 at 100 line pairs mm−1, and the corresponding noise transfer function was 0.4. The detection quantum efficiency peak value was 0.22 at 50 kVp. These values are within acceptable performance limits, and, given the phosphor material's high spectral compatibility and medium temporal response, CdPO3Cl:Mn could be considered for use in X-ray detectors of static radiography imaging.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Medical and Biological Engineering and Computing	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true