Modeling quantum noise of phosphors used in medical X-ray imaging detectors

dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Κωσταρίδου, Ελένη	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-01-19T13:59:23Z
dc.date.available	2015-01-19T13:59:23Z
dc.date.issued	2015-01-19
dc.identifier.uri	http://hdl.handle.net/11400/4255
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://www.elsevier.com	en
dc.subject	Phosphor detector
dc.subject	Quantum noise
dc.subject	Ανιχνευτής φωσφόρου
dc.subject	Κβαντικός θόρυβος
dc.title	Modeling quantum noise of phosphors used in medical X-ray imaging detectors	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Physics
heal.classification	Ιατρική
heal.classification	Φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://skos.um.es/unescothes/C02994
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Φυσική
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	doi:10.1016/S0168-9002(99)00232-6
heal.language	en
heal.access	free
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	1999
heal.bibliographicCitation	Kalivas, N., Kandarakis, I., Cavouras, D., Costaridou, L., Nomicos, C., et al. (July 1999). Modeling quantum noise of phosphors used in medical X-ray imaging detectors. Nuclear Instruments and Methods in Physics Research A. 430(2-3). pp. 559–569. Elsevier Science Ltd. Available from: http://www.sciencedirect.com [Accessed 29/06/1999]	en
heal.abstract	The noise properties of the granular phosphor screens, which are utilized in X-ray imaging detectors, are studied in terms of the quantum noise transfer function (QNTF). An analytical model, taking into account the effect of K-characteristic X-rays reabsorption within the phosphor material and the optical properties of the phosphor, was developed. The optical properties of the phosphor material required by the model were obtained from literature, except for the optical diffusion length (σ) that was determined by data fitting and was found to be 26 cm2/g. The deviation between theoretical and experimental data is σ depended. Specifically for σ=26 cm2/g and σ=25 cm2/g the respective deviations between experimental and predicted results were 0.698% and −1.597%. However for relative differences in σ more than 15% from the value 26 cm2/g, the corresponding deviations exceed by 6 times the value of 0.698%. The model was tested via comparison to experimental results obtained by a set of Y2O3:Eu3+ phosphor screens prepared by sedimentation. The model may be used to evaluate the effect of screen thickness and irradiation geometry on quantum noise of phosphor materials for transmission and reflection mode.	en
heal.publisher	Elsevier Science Ltd	en
heal.journalName	Nuclear Instruments and Methods in Physics Research A	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true