Assessment of the impact of dark signal on image quality in computerized mammography

dc.contributor.author	Βαλάση, Αλεξία	el
dc.contributor.author	Αργυρού, Μαρία	el
dc.contributor.author	Φλώρος, Ιωάννης	el
dc.contributor.author	Μολυβδά-Αθανασοπούλου, Ελισάβετ	el
dc.contributor.author	Σιούντας, Αναστάσιος	el
dc.date.accessioned	2015-02-14T18:19:35Z
dc.date.available	2015-02-14T18:19:35Z
dc.date.issued	2015-02-14
dc.identifier.uri	http://hdl.handle.net/11400/6281
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://e-jst.teiath.gr/	en
dc.subject	Computerized mammography
dc.subject	Dark signal
dc.subject	SNR
dc.subject	CNR
dc.subject	CR
dc.subject	Μηχανογραφημένη μαστογραφία
dc.subject	Σκοτεινό σήμα
dc.title	Assessment of the impact of dark signal on image quality in computerized mammography	en
heal.type	journalArticle
heal.generalDescription	Special issue: 2nd Conference on Bio-Medical Instrumentation and related Engineering And Physical Sciences, Technological Educational Institute of Athens, Athens, 21 & 22 June 2013.	en
heal.classification	Medicine
heal.classification	Medical physics
heal.classification	Ιατρική
heal.classification	Ιατρική φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85083001
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Ιατρική φυσική
heal.contributorName	Συνεφιά, Στέλλα	el
heal.contributorName	Βαμβακάς, Ιωάννης	el
heal.contributorName	Λύρα, Μαρία	el
heal.language	en
heal.access	free
heal.publicationDate	2014
heal.bibliographicCitation	Valasi, A., Argyrou, M., Floros, I., Molyvda-Athanasopoulou, E., Siountas, A., et al. (2014). Assessment of the impact of dark signal on image quality in computerized mammography. "e-Journal of Science & Technology". [Online] 9(4): 69-77. Available from: http://e-jst.teiath.gr/	en
heal.abstract	The aim of this study is to examine the impact of dark signal on assessing the image quality in computerized mammography. A GE analogue mammography unit was calibrated to be used with an Agfa CR35-X system. Tests for quality control were performed and Image Plates (IPs) were erased by the CR system. All IPs were first exposed to known amounts of scatter radiation and then used to take mammographic images of phantoms with varying density (a PASMAM-1054 Phantom with PMMA and Al inserts). Since high Signal-to-noise ratio (SNR) and high Contrast-to-noise ratio (CNR) are of great importance in mammographic image quality, we measured SNR and CNR of the taken images. Our results show the effect of scatter radiation on SNR and CNR. Scatter radiation increases SNR and decreases CNR. The impact of background signal was found not to be negligible. Dark signal deteriorates image quality in CR mammography. Consequently, further investigation may be warranted and daily erasure of the IPs is recommended in order to limit dark signal effect on image quality.	en
heal.publisher	Νερατζής, Ηλίας	el
heal.publisher	Σιανούδης, Ιωάννης	el
heal.publisher	Βαλαής, Ιωάννης Γ.	el
heal.publisher	Φούντος, Γεώργιος Π.	el
heal.journalName	e-Journal of Science & Technology	en
heal.journalName	e-Περιοδικό Επιστήμης & Τεχνολογίας	el
heal.journalType	peer-reviewed
heal.fullTextAvailability	true