Investigating the effect of K-characteristic radiation on the performance of nuclear medicine scintillators by Monte Carlo methods

dc.contributor.author	Λιαπαρίνος, Παναγιώτης Φ.	el
dc.contributor.author	Κανδαράκης, Ιωάννης Σ.	el
dc.contributor.author	Κάβουρας, Διονύσης Α.	el
dc.contributor.author	Δελής, Χαράλαμπος	el
dc.contributor.author	Παναγιωτάκης, Γεώργιος Σ.	el
dc.date.accessioned	2015-06-07T17:15:16Z
dc.date.available	2015-06-07T17:15:16Z
dc.date.issued	2015-06-07
dc.identifier.uri	http://hdl.handle.net/11400/15499
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	www.sciencedirect.com/science/journal/01689002	en
dc.subject	Monte Carlo method
dc.subject	Nuclear medicine
dc.subject	Radiation detector
dc.subject	Μέθοδος Μόντε Κάρλο
dc.subject	Μοριακή ιατρική
dc.subject	Ανιχνευτής ακτινοβολίας
dc.title	Investigating the effect of K-characteristic radiation on the performance of nuclear medicine scintillators by Monte Carlo methods	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Technology
heal.classification	Ιατρική
heal.classification	Τεχνολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://zbw.eu/stw/descriptor/10470-6
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Τεχνολογία
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85087032
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85093011
heal.identifier.secondary	DOI: 10.1016/j.nima.2006.08.109
heal.language	en
heal.access	campus
heal.recordProvider	Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2006-12-20
heal.bibliographicCitation	Liaparinos, D., Kandarakis, I., Cavouras, D., Delis, H. and Panayiotakis, G. (2006) Investigating the effect of K-characteristic radiation on the performance of nuclear medicine scintillators by Monte Carlo methods. "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment", 569 (2), p. 364-367. Available from: http://www.sciencedirect.com/science/article/pii/S0168900206014768 [Accessed: 07/06/2015].	en
heal.abstract	The aim of this study was to evaluate the effect of K-characteristic radiation on the performance of scintillator crystals incorporated in nuclear medicine detectors (LSO, BGO, GSO). K-characteristic radiation is produced within materials of at least one high atomic number element (e.g. Lu, Gd, Bi). This radiation may either be reabsorbed or it may escape the scintillator. In both cases the light emission efficiency of the scintillator may be affected resulting in either spatial or energy resolution degradation. A computational program, based on Monte Carlo methods, was developed in order to simulate the transport of K-characteristic radiation within the most commonly used scintillator materials. Crystal thickness was allowed to vary from 0.5 up to 15 mm. A monoenergetic pencil beam, with energy varying from 0.60 to 0.511 MeV was considered to fall on the center of the crystal surface. The dominant γ-ray interactions (elastic and inelastic scattering and photoelectric absorption) were taken into account in the simulation. Results showed that, depending on crystal thickness, incident photon energy and scintillator's intrinsic properties (L or K-fluorescence yield, effective atomic number and density), the scintillator's emission efficiency may be significantly reduced and affect spatial or energy resolution.	en
heal.publisher	Barletta, W.	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