Search Results - "NOMICOS, C. D"

Light emission efficiency and imaging properties of YAP:Ce granular phosphor screens by KALIVAS, N, VALAIS, I, NIKOLOPOULOS, D, KONSTANTINIDIS, A, GAITANIS, A, CAVOURAS, D, NOMICOS, C. D, PANAYIOTAKIS, G, KANDARAKIS, I

“…Phosphor materials are used in medical imaging combined with radiographic film or other photodetectors. Cerium (Ce3+) -doped scintillators are of particular…”
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Evaluating x-ray detectors for radiographic applications: a comparison of ZnSCdS:Ag with Gd2O2S:Tb and Y2O2S:Tb screens by Kandarakis, I, Cavouras, D, Panayiotakis, G S, Nomicos, C D

“…ZnSCdS:Ag was evaluated as a radiographic image receptor and was compared with Gd2O2S:Tb and Y2O2S:Tb phosphors often used in radiography. The evaluation of a…”
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Modeling quantum and structure noise of phosphors used in medical X-ray imaging detectors by Kalivas, N., Costaridou, L., Kandarakis, I., Cavouras, D., Nomicos, C.D., Panayiotakis, G.

“…The noise properties of granular phosphors used in X-ray imaging detectors are studied in terms of a noise transfer function, NTF. This study is performed in…”
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Experimental investigation of the optical signal, gain, signal-to-noise ratio and information content characteristics of X-ray phosphor screens by KANDARAKIS, I, CAVOURAS, D, PANAYIOTAKIS, G. S, NOMICOS, C. D

“…In this study, the quality of medical images produced by X-ray phosphor screens is described by a model based on the light generation and emission properties…”
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Evaluating Zn2SiO4 :Mn phosphor for use in medical imaging radiation detectors by KANDARAKIS, I, CAVOURAS, D, PRASSOPOULOS, P, KANELLOPOULOS, E, NOMICOS, C. D, PANAYIOTAKIS, G. S

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X-ray luminescence of ZnSCdS:Au,Cu phosphor using X-ray beams for medical applications by Kandarakis, I, Cavouras, D, Nomicos, C.D, Panayiotakis, G.S

“…The purpose of the present study was to evaluate the X-ray luminescence and imaging performance of phosphor screens prepared from ZnSCdS:Au,Cu. Absolute…”
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Effect of intrinsic-gain fluctuations on quantum noise of phosphor materials used in medical X-ray imaging by KALIVAS, N, COSTARIDOU, L, KANDARAKIS, I, CAVOURAS, D, NOMICOS, C. D, PANAYIOTAKIS, G

“…The quality of a medical image depends, among other parameters, on quantum noise. Quantum noise is affected by the fluctuations in the number of optical quanta…”
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Assessment of the gain transfer function of phosphors for application in medical imaging radiation detectors by Cavouras, D, Kandarakis, I, Maris, T, Panayiotakis, G.S, Nomicos, C.D

“…Objective: to study various phosphors used in detectors of medical imaging systems by the gain transfer function (GTF), defined in terms of X-ray luminescence…”
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Integrated model for estimating phosphor signal and noise transfer characteristics on medical images: application to CdPO3Cl:Mn phosphor screens by CAVOURAS, D, KANDARAKIS, I, PANAYIOTAKIS, G. S, NOMICOS, C. D

“…An integrated model describing the signal and noise transfer characteristics of the objective image quality and information content in phosphor-produced images…”
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Optical gain signal-to-noise ratio transfer efficiency as an index for ranking of phosphor- photodetector combinations used in X-ray medical imaging by Kalivas, N., Costaridou, L., Kandarakis, I., Cavouras, D., Nomicos, C.D., Panayiotakis, G.

“…Phosphor materials are used in medical imaging combined with radiographic film or other photodetectors. A parameter for choosing a phosphor material is the…”
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An evaluation of the Y2O3:Eu3+ scintillator for application in medical x-ray detectors and image receptors by Cavouras, D, Kandarakis, I, Panayiotakis, G S, Evangelou, E K, Nomicos, C D

“…The suitability off a Y2O3:Eu3+ scintillator for use in radiation detectors and medical image receptors was studied. Y2O3:Eu3+ was used in the form of…”
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Entropy as a measure of the performance of phosphor materials used in medical imaging radiation detectors by CAVOURAS, D, KANDARAKIS, I, MARIS, T, PANAYIOTAKIS, G. S, NOMICOS, C. D

“…In information theory, entropy expresses the information gain obtained after detection of a signal concerning the state of a parameter of interest. In this…”
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A method for determining the information capacity of x-ray imaging scintillator detectors by means of luminescence and modulation transfer function measurements by KANDARAKIS, I, CAVOURAS, D, KANELLOPOULOS, E, NOMICOS, C. D, PANAYIOTAKIS, G. S

“…A method to determine the information capacity of x-ray phosphor screens used in the detectors of medical imaging systems is described. Information capacity…”
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An experimental method to determine the effective luminescence efficiency of scintillator-photodetector combinations used in X-ray medical imaging systems by Cavouras, D, Kandarakis, I, Bakas, A, Triantis, D, Nomicos, C D, Panayiotakis, G S

“…The scintillator effective luminescence efficiency, which may be defined in terms of the scintillator's X-ray luminescence efficiency and the…”
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An experimental method for the determination of spatial-frequency-dependent detective quantum efficiency (DQE) of scintillators used in X-ray imaging detectors by Kandarakis, I., Cavouras, D., Panayiotakis, G.S., Triantis, D., Nomicos, C.D.

“…The spatial-frequency-dependent detective quantum efficiency (DQE) of imaging scintillators was studied independently of the optical detector (film,…”
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Evaluating scintillators used in radiation detectors of medical imaging systems by the effective fidelity index method by Kandarakis, I., Cavouras, D., Prassopoulos, P., Kanellopoulos, E., Nomicos, C.D., Panayiotakis, G.S.

“…Objective: The performance of medical X-ray image receptors depends: (1) on the scintillator light emission efficiency; and (2) on the compatibility of the…”
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A comparative study of the luminescence properties of LYSO:Ce, LSO:Ce, GSO:Ce and BGO single crystal scintillators for use in medical X-ray imaging by Valais, I, Michail, C, David, S, Nomicos, C.D, Panayiotakis, G.S, Kandarakis, I

“…Abstract The present study is a comparative investigation of the luminescence properties of (Lu,Y)2 SiO5 :Ce (LYSO:Ce), Lu2 SiO5 :Ce (LSO:Ce), Gd2 SiO5 :Ce…”
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Assessing the information content of phosphor produced medical images: application to Zn2SiO4:Mn phosphor by Cavouras, D, Kandarakis, I, Nomicos, C D, Panayiotakis, G S, Fezoulidis, I

“…In this study a method to assess the information content of medical images produced by phosphors is described. The optical signal emitted by the phosphor after…”
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A theoretical model for calculation of the detective quantum efficiency in granular scintillators by Cavouras, D., Kandarakis, I., Tsoukos, S., Kateris, A., Nomicos, C.D., Panayiotakis, G.S.

“…A theoretical model has been developed for calculating the detective quantum efficiency (DQE) of scintillators, by taking into account the internal structure…”
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A method to evaluate the performance of X-ray imaging scintillators by means of the brightness-sharpness index (BSI) by Cavouras, D, Kandarakis, I, Prassopoulos, P, Kanellopoulos, E, Nomicos, C D, Panayiotakis, G S

“…To propose an image quality index, the brightness-sharpness index (BSI), for assessing the quality of the image produced by phosphors of medical imaging…”
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