Experimental evaluation of a high resolution CMOS digital imaging detector coupled to structured CsI scintillators for medical imaging applications

dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Σεφέρης, Ιωάννης Ε.	el
dc.contributor.author	Στροματιά, Φ.	el
dc.contributor.author	Κουνάδη, Ευαγγελία	el
dc.date.accessioned	2015-06-11T19:11:03Z
dc.date.available	2015-06-11T19:11:03Z
dc.date.issued	2015-06-11
dc.identifier.uri	http://hdl.handle.net/11400/15736
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_117	en
dc.subject	Ψηφιακή απεικόνιση
dc.subject	ποιότητα της εικόνας
dc.subject	Δομημένοι σπινθηριστές
dc.subject	Digital imaging
dc.subject	Image quality
dc.subject	Structured scintillators
dc.title	Experimental evaluation of a high resolution CMOS digital imaging detector coupled to structured CsI scintillators for medical imaging applications	en
heal.type	conferenceItem
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	Φούντος, Γεώργιος Π.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.identifier.secondary	DOI: 10.1007/978-3-319-00846-2_117
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	Michail, C.M., Valais, I.G., Seferis, I.E., Stromatia, F., Kounadi, E. et al. (2014) Experimental evaluation of a high resolution CMOS digital imaging detector coupled to structured CsI scintillators for medical imaging applications. IFMBE Proceedings. 13th Mediterranean Conference on Medical and Biological Engineering and Computing 2013, MEDICON 2013. 41, 2014. pp.471-474. Seville, Spain: Springer International Publishing	en
heal.abstract	The purpose of the present study was to investigate the fundamental imaging performance of CsI scintillating screens specially treated for a CMOS digital imaging sensor, in terms of the Modulation Transfer Function (MTF), Normalized Noise Power Spectrum (NNPS) and the Detective Quantum Efficiency (DQE) in the general radiography energy range. The CMOS sensor was coupled to two columnar CsI:Tl scintillator screens obtained from the same manufacturer with thicknesses of 140 and 170 μm, respectively, which were placed in direct contact with the photodiode array. A CMOS photodiode array was used as an optical photon detector. The MTF was measured using the slanted-edge method while NNPS was determined by 2D Fourier transforming of uniformly exposed images. Both parameters were assessed by irradiation under the RQA-5 beam quality (IEC 62220-1). The DQE was assessed from the measured MTF, NNPS and the direct entrance surface air-Kerma (ESAK) obtained from Xray spectra measurement with a portable CdTe detector. The detector response function was linear for the exposure range under investigation. The MTF of the present system was found higher than previously published MTF data for a 48 μm CMOS sensor, in the low and medium frequency ranges. DQE was found comparable, while the NNPS appeared to be higher in the 0-10 cycles/mm frequency range. The imaging performance of CsI:Tl scintillating screens in combination to the high resolution CMOS sensor, that was investigated in the present study, could be used in digital imaging systems in order to reduce exposure to patients.	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