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Title: Comparative evaluation of single crystal scintillators under x-ray imaging conditions
Authors: Βαλαής, Ιωάννης Γ.
Μιχαήλ, Χρήστος Μ.
Δαυίδ, Στράτος
Νομικός, Κωνσταντίνος Δ.
Παναγιωτάκης, Γεώργιος Σ.
Contributors: Κανδαράκης, Ιωάννης
Item type: Journal article
Keywords: Tomography, Emission;Ανιχνευτές ακτίνων Χ;Gamma κάμερα;CT στεφανιαία αγγειογραφία;X - ray ακτινογραφία και ψηφιακή ακτινογραφία;Χ-ray μαστογραφία;MRI μαστογραφία;X-ray detectors;Gamma camera;Coronary CT angiography;X-ray radiography and digital radiography;X-ray mammography;MRI-mammography;SPECT
Subjects: Medicine
Issue Date: 26-Apr-2015
Date of availability: 26-Apr-2015
Abstract: The present study is a comparative investigation of the luminescence properties of (Lu,Y)2SiO5: Ce (LYSO: Ce), YAlO3: Ce (YAP: Ce), Gd2SiO5: Ce (GSO: Ce) and (Bi4Ge3O12) BGO single crystal scintillators under x-ray excitation. Results will be of value in designing dual modality tomographic systems (PET/CT, SPECT/CT) based on a common scintillator crystal. All scintillating crystals have dimensions of 10 × 10 × 10 cm3 are non-hygroscopic exhibiting high radiation absorption efficiency in the energy range used in medical imaging applications. The comparative investigation was performed by determining the x-ray luminescence efficiency (emitted light flux over incident x-ray energy flux) in the range of x-ray energies employed in: (i) general x-ray imaging (40–140 kV, using a W/Al x-ray spectrum) and (ii) x-ray mammography imaging (22–49 kV, using a Mo/Mo x-ray spectrum). Additionally, light emission spectra of crystals at various x-ray energies were measured, in order to determine the intrinsic conversion efficiency and the spectral compatibility to optical photon detectors incorporated in medical imaging systems. The light emission performance of LYSO:Ce scintillator studied was found very high for x-ray imaging.
Description: Έχει παρουσιαστεί και στο 4th International conference on imaging technologies in biomedical sciences, from mediacl images to clinical information- bridging the gap. Στο Milos island, Greece, 22-28 September 2007.
Language: English
Citation: Valais, I., Michail, C., David, S., Nomicos, C.D., Panayiotakis, G.S, e.t. (2009) Comparative evaluation of single crystal scintillators under x-ray imaging conditions. Journal of Instrumentation. 4(06). pp.1-5.
Journal: Journal of Instrumentation
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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