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dc.contributor.authorΣπυροπούλου, Βασιλική Α.ell
dc.contributor.authorΚαλύβας, Νεκτάριος Ι.ell
dc.contributor.authorΓαϊτάνης, Αναστάσιοςell
dc.contributor.authorΜιχαήλ, Χρήστος Μ.ell
dc.contributor.authorΠαναγιωτάκης, Γεώργιος Σ.ell
dc.identifier.citationSpyropoulou, V. A., Kalivas, N. I., Gaitanis, A., Michail, C. M., Panayiotakis, G. S., et al. (2008) Modeling detector performance in digital mammography using the linear cascaded systems approach. "e-Journal of Science & Technology". [Online] 3 (2). p. 52-57. Available from: [Accessed 27/01/2015]ell
dc.description.abstractDigital x-ray mammography is a modern method for the early detection of breast cancer. The quality of a mammography image depends on various factors, the detector structure and performance being of primary importance. The aim of this work was to develop an analytical model simulating the imaging performance of a new commercially available digital mammography detector. This was achieved within the framework of the linear cascaded systems (LCS) theory. System analysis has allowed the estimation of important image quality metrics such as the Modulation Transfer Function (MTF), the Noise Power Spectrum (NPS), the Detective Quantum Efficiency (DQE) and the Signal to Noise Ratio (SNR). The detector was an indirect detection system consisting of a large area, 100μm thick, CsI:TI scintillator coupled to an active matrix array of amorphous silicon (a-Si:H) photodiodes combined with thin film transistors (TFT). Pixel size was 100μm, while the active pixel dimension was 70μm. MTF and DQE data were calculated for air kerma conditions of 25, 53, 67 μGy using a 28 kVp Mo-Mo x-ray spectrum. In addition, the scintillator thickness was changed in order to find the optimum material characteristics. The theoretical results were compared with published experimental data. The deviation between the theoretical and experimental MTF curves was less than 4%, while the DQE differences were found at an acceptable level.eng
dc.publisherΝερατζής, Ηλίαςell
dc.publisherΣιανούδης, Ιωάννηςell
dc.rightsΑναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες*
dc.subjectImage quality-
dc.subjectΠοιότητα εικόνας-
dc.subjectDigital mammography-
dc.subjectLinear cascaded systems theory-
dc.subjectIndirect detectors-
dc.subjectΨηφιακή μαστογραφία-
dc.subjectΘεωρία γραμμικής κλιμάκωσης συστημάτων-
dc.subjectΈμμεσοι ανιχνευτές-
dc.titleΜοντελοποίηση της απόδοσης ανιχνευτή ψηφιακής μαστογραφίας μέσω της θεωρίας γραμμικών αλληλοδιαδοχικών συστημάτωνell
dc.titleModeling detector performance in digital mammography using the linear cascaded systems approacheng
dc.typeΔημοσίευση σε συνέδριο-
heal.classificationMedical physics-
heal.classificationΙατρική φυσική-
heal.classificationURI**N/A**-Ιατρική φυσική-
heal.contributorNameΚανδαράκης, Ιωάννης Σ.ell
heal.journalNamee-Περιοδικό Επιστήμης & Τεχνολογίαςell
heal.journalNamee-Journal of Science & Technologyeng
Appears in Collections:Τόμος 03, τεύχος 2 (2008)

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