caa a22 4500 46321336X CHVBK 20180405153148.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s00339-007-4173-8 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4173-8 Light emission efficiency and imaging properties of YAP:Ce granular phosphor screens [Elektronische Daten] [N. Kalivas, I. Valais, D. Nikolopoulos, A. Konstantinidis, A. Gaitanis, D. Cavouras, C.D. Nomicos, G. Panayiotakis, I. Kandarakis] Phosphor materials are used in medical imaging combined with radiographic film or other photodetectors. Cerium (Ce3+) -doped scintillators are of particular interest for medical imaging, because of their very fast response. YAP:Ce scintillator-based image detectors have already been evaluated in single-crystal form and under conditions of positron emission tomography and synchrotron or γ-ray irradiation. Furthermore, YAP:Ce phosphor has been evaluated in conjunction with radiographic films. The present work reports experimental and theoretical data concerning the light output absolute luminescence efficiency (AE) of the YAP:Ce screens under irradiation conditions employed in medical X-ray projection imaging (i.e., in diagnostic radiology). projection imaging (i.e., in diagnostic radiology). YAP:Ce phosphor screens with surface densities ranging between 53 and 110mg/cm2 were prepared by sedimentation on fused silica substates in our laboratory. The resulted surface density of the screens was determined by dividing the phosphor mass deposited on the screen surface with the area of the surface. Additionally this work addresses the imaging performance of YAP:Ce by estimation of the detective quantum efficiency (DQE), i.e., the square of the signal to noise ratio transfer. Absolute efficiency was found to decrease with X-ray tube voltage for for YAP:Ce phosphor. The highest experimental efficiency was obtained for the 53.7mg/cm2 and 88.0mg/cm2 YAP:Ce screens. The highest DQE value was found for the 88.0mg/cm2 screen irradiated at 60kVp. Springer-Verlag, 2007 Kalivas N. Greek Atomic Energy Commission, P.O. Box 60092, 15310, Agia Paraskevi, Greece aut Valais I. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Nikolopoulos D. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Konstantinidis A. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Gaitanis A. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Cavouras D. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Nomicos C.D. Department of Electronics, Technological Educational Institution of Athens, Athens, Greece aut Panayiotakis G. Department of Medical Physics, School of Medicine, University of Patras, 26500, Patras, Greece aut Kandarakis I. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut Applied Physics A Springer-Verlag 89/2(2007-11-01), 443-449 0947-8396 89:2<443 2007 89 339 https://doi.org/10.1007/s00339-007-4173-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4173-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kalivas N. Greek Atomic Energy Commission, P.O. Box 60092, 15310, Agia Paraskevi, Greece aut NATIONALLICENCE 700 1- Valais I. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 700 1- Nikolopoulos D. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 700 1- Konstantinidis A. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 700 1- Gaitanis A. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 700 1- Cavouras D. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 700 1- Nomicos C.D. Department of Electronics, Technological Educational Institution of Athens, Athens, Greece aut NATIONALLICENCE 700 1- Panayiotakis G. Department of Medical Physics, School of Medicine, University of Patras, 26500, Patras, Greece aut NATIONALLICENCE 700 1- Kandarakis I. Department of Medical Instrumentation Technology, Technological Educational Institution of Athens, Agiou Spyridonos, 12210, Athens, Greece aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/2(2007-11-01), 443-449 0947-8396 89:2<443 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer