Experimental investigation of the optical signal, signal-to-noise ratio and information content characteristics of x-ray phosphor screens

dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-05-05T12:13:53Z
dc.date.available	2015-05-05T12:13:53Z
dc.date.issued	2015-05-05
dc.identifier.uri	http://hdl.handle.net/11400/9738
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/s003400100569	en
dc.subject	PACS: 07.85
dc.subject	42.30
dc.subject	42.80
dc.subject	Medical images
dc.subject	Phosphors
dc.subject	Ιατρικές εικόνες
dc.subject	Φωσφορίζουσες
dc.title	Experimental investigation of the optical signal, signal-to-noise ratio and information content characteristics of x-ray phosphor screens	en
heal.type	journalArticle
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.keywordURI	http://id.loc.gov/authorities/subjects/sh85101117
heal.identifier.secondary	DOI 10.1007/s003400100569
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2001
heal.bibliographicCitation	Κandarakis, I., Cavouras, D., Panayiotakis, G. and Nomicos, C. (May 2001). Experimental investigation of the optical signal, signal-to-noise ratio and information content characteristics of x-ray phosphor screens. Applied Physics B. 72(1). pp. 877-883. Springer-Verlag: 2001. Available from: http://link.springer.com/article/10.1007/s003400100569	en
heal.abstract	In this study, the quality of medical images produced by X-ray phosphor screens is described by a model based on the light generation and emission properties of the phosphor material. Combined detector gain (CDG), modulation transfer function (MTF), detective quantum efficiency (DQE) and information capacity (IC) of the screens were expressed and evaluated as functions of emitted optical fluence, incident X-ray fluence and emitted optical spectrum. Phosphor screens with coating thickness ranging from 21 mg/cm2 to 137 mg/cm2 were prepared in the laboratory and were irradiated by X-rays with X-ray voltages from 50 to 140 kVp. Experimental data were obtained in both transmission and reflection modes of measurement (light emission from both screen sides). Results showed that most image quality parameters (CDG, MTF, DQE) depend strongly on phosphor screen thickness. CDG and DQE also depend on X-ray tube voltage. However, the total quantity of information (IC), which depends on both the incident X-ray fluence and phosphor material type, was not found to be significantly affected by phosphor thickness.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Applied Physics B	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true