Calcification detection optimization in dual energy mammography

dc.contributor.author	Κούκου, Βάϊα Ν.	el
dc.contributor.author	Μαρτίνη, Νίκη Δ.	el
dc.contributor.author	Φούντος, Γεώργιος Κ.	el
dc.contributor.author	Σωτηροπούλου, Παναγιώτα Ι.	el
dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.date.accessioned	2015-06-11T19:42:14Z
dc.date.available	2015-06-11T19:42:14Z
dc.date.issued	2015-06-11
dc.identifier.uri	http://hdl.handle.net/11400/15740
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/chapter/10.1007%2F978-3-319-00846-2_114	en
dc.subject	Ανιχνεύσεις Αποτιτάνωσης
dc.subject	Συντελεστής διακύμανσης
dc.subject	Διπλής ενέργειας απεικόνιση
dc.subject	Διπλής ενέργειας μαστογραφία
dc.subject	Μικροαποτιτανώσεις
dc.subject	Calcification detections
dc.subject	Coefficient of variation
dc.subject	Dual-energy imaging
dc.subject	Dual-energy mammographies
dc.subject	Microcalcifications
dc.title	Calcification detection optimization in dual energy mammography	en
heal.type	conferenceItem
heal.secondaryTitle	influence of the X-ray spectra	en
heal.classification	Μηχανική
heal.classification	Ιατρική
heal.classification	Engineering
heal.classification	Medicine
heal.classificationURI	N/A-Μηχανική
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	http://skos.um.es/unescothes/C01363
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.contributorName	Βαλαής, Ιωάννης Γ.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.identifier.secondary	DOI: 10.1007/978-3-319-00846-2_114
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2014
heal.bibliographicCitation	Koukou, V., Martini, N., Fountos, G., Sotiropoulou, P., Michail, C. et al. (2014) Calcification detection optimization in dual energy mammography: Influence of the X-ray spectra. IFMBE Proceedings. 13th Mediterranean Conference on Medical and Biological Engineering and Computing 2013. 41, 2014. pp.459-462. Seville, Spain: Springer International Publishing	en
heal.abstract	Breast cancer may manifest as microcalcifications (μCs) in X-ray mammography. However, the detection and visualization of μCs are often obscured by the overlapping tissue structures. Dual-Energy imaging technique offers an alternative approach for imaging and visualizing μCs. With this technique, a high- and a low-energy image is acquired and their differences are used to "cancel" out the background tissue structures. In this report, various combinations of maximum tube voltages, 23-30kVp for low energy and 50-60kVp for high energy, and filter thicknesses were examined in order to obtain quasi-monochromatic spectra. The filters applied to Tungsten (W) spectra were selected according to their K-edge (K-edge filtering). The impact of these imaging parameters on the calcification signal-to-noise ratio (SNR) for a fixed entrance exposure was studied. The optimization of the study was accomplished by the maximization of the calcification SNR (SNRtc ≥ 3) and the minimization of the coefficient of variation of the incident photons, for the minimum μC size that can be detected. The best results were obtained from filtered spectra at 30kVp and 60kVp for low and high energy respectively. These spectra were filtered with 300 μm Cd and 800 μm Sm with mean energy values 23.9 and 42.2 keV for low and high energy respectively.	en
heal.sponsor	International Federation for Medical and,Biological Engineering (IFMBE)	en
heal.publisher	Springer International Publishing	en
heal.fullTextAvailability	false
heal.conferenceName	IFMBE Proceedings	en
heal.conferenceItemType	short paper