An experimental method for the determination of spatial-frequency-dependent detective quantum efficiency (DQE) of scintillators used in X-ray imaging detectors

dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.date.accessioned	2015-04-05T19:01:07Z
dc.date.available	2015-04-05T19:01:07Z
dc.date.issued	2015-04-05
dc.identifier.uri	http://hdl.handle.net/11400/8251
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://www.elsevier.com	en
dc.subject	Imaging scintillators
dc.subject	Medical imaging devices
dc.subject	Optical detector imaging properties
dc.subject	Σπινθηριστές απεικόνισης
dc.subject	Ιατρικές συσκευές απεικόνισης
dc.subject	Ιδιότητες απεικόνισης οπτικού ανιχνευτή
dc.title	An experimental method for the determination of spatial-frequency-dependent detective quantum efficiency (DQE) of scintillators used in X-ray imaging detectors	en
heal.type	journalArticle
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.identifier.secondary	doi:10.1016/S0168-9002(97)00955-8
heal.language	en
heal.access	free
heal.publicationDate	1997-11-11
heal.bibliographicCitation	KANDARAKIS, I.S., CAVOURAS, D.A., PANAYIOTAKIS, G.S., TRIANTIS, D.A. & NOMICOS, C.D. (1997). An experimental method for the determination of spatial-frequency-dependent detective quantum efficiency (DQE) of scintillators used in X-ray imaging detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. [Online] 399 (2-3). p.335-342. Available from: http://www.sciencedirect.com/ [Accessed 17/05/1998]	en
heal.abstract	The spatial-frequency-dependent detective quantum efficiency (DQE) of imaging scintillators was studied independently of the optical detector (film, photocathode, or photodiode) employed in medical imaging devices. A method was developed to experimentally determine the scintillator DQE in terms of its luminescence efficiency (LE), quantum detection efficiency, modulation transfer function, and light emission spectrum. Gd2O2S : Tb, La2O2S : Tb, Y2O2S : Tb and ZnSCdS : Ag scintillating screens were prepared in laboratory and were excited to luminescence by a medical X-ray tube. Maximum DQE values varied between 0.13 and 0.33 depending on the scintillator material, the screen coating weight, and the tube voltage; Gd2O2S : Tb was superior to La2O2S : Tb followed by ZnSCdS : Ag and Y2O2S : Tb. This ranking was maintained at frequencies up to 100 cycles/cm. Considering the same material, DQE of thin screens was found superior to DQE of thicker screens at medium-to-high frequencies. The proposed method allows for the comparison of imaging characteristics of scintillating materials without the inclusion of optical detector imaging properties.	en
heal.publisher	Elsevier	en
heal.journalName	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true