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dc.contributor.author Κανδαράκης, Ιωάννης Σ. el
dc.contributor.author Κάβουρας, Διονύσης Α. el
dc.contributor.author Καλύβας, Νεκτάριος Ι. el
dc.contributor.author Νομικός, Κωνσταντίνος Δ. el
dc.contributor.author Παναγιωτάκης, Γεώργιος Σ. el
dc.date.accessioned 2015-05-05T10:25:57Z
dc.date.available 2015-05-05T10:25:57Z
dc.date.issued 2015-05-05
dc.identifier.uri http://hdl.handle.net/11400/9730
dc.rights An error occurred on the license name. *
dc.rights.uri An error occurred getting the license - uri. *
dc.source http://www.sciencedirect.com/science/article/pii/S0168583X99002396 en
dc.subject Medical image
dc.subject Scintillator screens
dc.subject Ιατρική εικόνα
dc.subject Οθόνες σπινθηριστή
dc.title Estimation of the information content of medical images produced by scintillators interacting with diagnostic x-ray beams 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.identifier.secondary doi:10.1016/S0168-583X(99)00239-6
heal.language en
heal.access campus
heal.recordProvider Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε. el
heal.publicationDate 1999
heal.bibliographicCitation Kandarakis, I., Cavouras, D., Kalivas, N., Nomicos, C. and Panayiotakis, G. (July 1999). Estimation of the information content of medical images produced by scintillators interacting with diagnostic x-ray beams. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 155(1-2). pp. 199-205. Elsevier Science B.V: 1999. Available from: http://www.sciencedirect.com/science/article/pii/S0168583X99002396 [Accessed 10/08/1999] en
heal.abstract The information content of medical images produced by X-ray beam–scintillator interaction was assessed by a method involving detective quantum efficiency (DQE) and information capacity determination. The method was based on emitted light fluence and modulation transfer function (MTF) measurements and it was employed to evaluate the performance of (Gd0.5La0.5)2O2S:Tb scintillator, which was used in the form of laboratory prepared scintillator screens with coating weights ranging between 20 and 139 mg/cm2. Screens were excited to luminescence using 80 and 120 kVp X-ray beams. The scintillator layer exhibited the highest DQE at zero spatial frequency. Thick scintillator layers displayed higher DQE values in the low frequency range while at high frequencies the DQE of thin scintillators were higher. Additionally, thin scintillator layers showed slow DQE variation with increasing frequency. The information capacity of scintillator layers decreased with increasing coating weight indicating that the information content of images produced by thin scintillating layers is higher and more evenly distributed with respect to spatial frequencies. en
heal.publisher Elsevier Science B.V en
heal.journalName Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms en
heal.journalType peer-reviewed
heal.fullTextAvailability true


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