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Dear PANAGIOTIS LIAPARINOS,
The submission of your abstract has been successfully processed.
Abstract submitted: https://indico.cern.ch/userAbstracts.py?confId=192695.
Status of your abstract: https://indico.cern.ch/abstractDisplay.py?abstractId=200&confId=192695.
See below a detailed summary of your submitted abstract:
Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics
Submitted by: LIAPARINOS, Panagiotis
Submitted on: 05 February 2014 17:38
Title: Light emission measurements of LFS-3 and GAGG:Ce single crystal samples under X-ray radiographic conditions
Abstract content Abstract: Inorganic scintillating crystals are employed as radiation to light converters in most medical imaging modalities. This study presents a comparative investigation of the luminescence emission properties of LFS-3 (Zecotek Photonics Inc) and GAGG:Ce (Furukawa Co Ltd) single crystal scintillators under medical X-ray excitation. Both scintillating materials have dimensions of 10x10x10mm3 and 10x10x20mm3. The Absolute Luminescence Efficiency-AE (i.e., the light energy flux over exposure rate) and the so-called Effective Efficiency-EE (i.e., the light spectral compatibility with electronic optical sensors were investigated under X-ray excitation in the radiographic energy range from 50 to 130 kVp. The AE and the EE parameters of the examined scintillators were found to increase with the X-ray tube voltage. The maximum AE value was found equal to 41.22 E.U (1 E.U equal to μW•m-2/mR•s) for the GAGG:Ce scintillator at 130kVp X-ray tube voltage whereas for the same tube voltage the maximum AE for LFS-3 scintillator was equal to 22.29 E.U. This increased efficiency to the above X-ray voltage can be attributed to the high density of the materials, which enhances X-ray photon absorption, and their high light output. Both scintillators have higher efficiency than LSO:Ce (standard scintillator used in PET) which measured equal to 18 E.U. under the same conditions, thus LFS-3 and GAGG:Ce crystals might be considered for further research as suitable radiation detectors in medical imaging.
Acknowledgments This research has been co-funded by the European Union (European Social Fund) and Greek national resources under the framework of the “Archimedes III: Funding of Research Groups in TEI of Athens” project of the “Education & Lifelong Learning” Operational Program.
Summary
Primary Authors: Dr. VALAIS, Ioannis (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) valais@teiath.gr
Co-authors: Dr. DAVID, Stratos (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) sdavid@teiath.gr Dr. MICHAIL, Christos (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) michail@upatras.gr Dr. BAKAS, Athanasios (Department of Medical Radiologic Technology, Technological Educational Institute of Athens, 12210 Athens, Greece) abakas@teaith.gr Prof. KOURKOUTAS, Kostas (Department of Energy Technology,Technological Educational Institute of Athens, 12210 Athens, Greece) kourkoutas@teiath.gr Mr. SEFERIS, Ioannis (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) seferisgiannis@hotmail.com Prof. KANDARAKIS, Ioannis (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) kandarakis@teiath.gr Prof. LIAPARINOS, Panagiotis (Department of Biomedical Engineering, Technological Educational Institute of Athens, 12210 Athens, Greece) liapkin@teiath.gr
Abstract presenters: Prof. LIAPARINOS, Panagiotis
Track classification: Sensors: 1d) Photon Detectors
Presentation type: Poster
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