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Title: Investigation of luminescence emission properties of (Lu,Y)2SiO5:Ce (LYSO:Ce) and (Lu,Y)AlO3:Ce (LuYAP:Ce) single crystal scintillators under x-ray exposure for use in medical imaging
Authors: Βαλαής, Ιωάννης Γ.
Κανδαράκης, Ιωάννης
Μιχαήλ, Χρήστος Μ.
Δαυίδ, Στράτος
Σιανούδης, Ιωάννης
Contributors: Νικολόπουλος, Δημήτριος
Κάβουρας, Διονύσης Α.
Κουρκουτάς, Κωνσταντίνος Δ.
Νομικός, Κωνσταντίνος Δ.
Παναγιωτάκης, Γιώργος Σ.
Item type: Conference publication
Conference Item Type: Abstract
Keywords: Φωταύγεια;Ιδιότητες εκπομπής;Μονοκρυσταλλικοί σπινθηριστές;Ιατρική απεικόνιση;Luminescence;Emission properties;Single crystal scintillators;Medical imaging
Subjects: Medicine
Issue Date: 28-Apr-2015
Abstract: LYSO:Ce and LuYAP:Ce are single crystal scintillators of high density, non-hydroscopic, high light yield and short decay time and have been successfully used in small animal PET imagers. In our study, the luminescence emission properties of (Lu0.9,Y0.1)2SiO5:Ce (LYSO:Ce) and (Lu0.7,Y0.3)AlO3:Ce (LuYAP:Ce) crystals were investigated for use in medical X-ray imaging. Both crystal studied had dimensions of 2 times 2 times 8 mm3, with all surface polished. Evaluation was performed by determining the absolute luminescence efficiency (emitted light flux over incident X-ray exposure) in a wide range of X-ray energies employed in mammography (22-49 kVp) and in general X-ray imaging (50-140 kVp). Measurements were performed using an experimental set-up based on a photomultiplier coupled to an integration sphere. The emission spectrum under UV and X-ray excitation was measured using an optical grating monochromator to determine the spectral compatibility to optical photon detectors incorporated in medical imaging systems. Additionally, the optical characteristics such as transmission and absorption spectra were investigated and correlated with the scintillation properties. The light emission performance of the two scintillation materials studied was found adequately high for X-ray imaging.
Description: IEEE Nuclear Science Symposium Conference Record N30- 152
Language: English
Citation: Valais, I., David, S., Michail, C., Nikolopoulos, D., Cavouras, D., e.t. (2006) Investigation of luminescence emission properties of (Lu,Y)2SiO5:Ce (LYSO:Ce) and (Lu,Y)AlO3:Ce (LuYAP:Ce) single crystal scintillators under x-ray exposure for use in medical imaging. In Nuclear science symposium medical Imaging conference. San Diego, California, 29 October- 4 November 2006.
Conference: Nuclear science symposium medical Imaging conference
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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