Search Results - "Loudos, G.K"

A Comparative Evaluation of Scatter Correction Techniques in High-Resolution Detectors Based on PSPMTs and Scintillator Arrays by Karali, E., Loudos, G.K., Sakellios, N., Nikita, K.S.

“…Single photon emission computed tomography images suffer from low contrast as a result of photon scatter. The standard method for excluding the scatter…”
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Monte-Carlo simulation for scatter correction compensation studies in SPECT imaging using GATE software package by Sakellios, N.G., Karali, E., Lazaro, D., Loudos, G.K., Nikita, K.S.

“…Simulations using Monte-Carlo packages are increasingly used in Nuclear Imaging, both for PET and SPECT applications. Either for modeling imaging systems or…”
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Tomographic image reconstruction using Artificial Neural Networks by Paschalis, P, Giokaris, N.D, Karabarbounis, A, Loudos, G.K, Maintas, D, Papanicolas, C.N, Spanoudaki, V, Tsoumpas, Ch, Stiliaris, E

“…A new image reconstruction technique based on the usage of an Artificial Neural Network (ANN) is presented. The most crucial factor in designing such a…”
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Luminescence Properties of (,): and : Single Crystal Scintillators Under X-Ray Excitation for Use in Medical Imaging Systems by Valais, I.G., Kandarakis, I.S., Nikolopoulos, D.N., Michail, C.M., David, S.L., Loudos, G.K., Cavouras, D.A., Panayiotakis, G.S.

“…The luminescence of (Lu,Y) 2 SiO 5 : Ce (LYSO:Ce) and Gd 2 SiO 5 :Ce (GSO:Ce) crystals was studied for use in tomographic medical x-ray imaging. LYSO:Ce and…”
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A 3D high-resolution gamma camera for radiopharmaceutical studies with small animals by Loudos, G.K., Nikita, K.S., Giokaris, N.D., Styliaris, E., Archimandritis, S.C., Varvarigou, A.D., Papanicolas, C.N., Majewski, S., Weisenberger, D., Pani, R., Scopinaro, F., Uzunoglu, N.K., Maintas, D., Stefanis, K.

“…The results of studies conducted with a small field of view tomographic gamma camera based on a Position Sensitive Photomultiplier Tube are reported. The…”
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Design and development of a position-sensitive γ-camera for SPECT imaging based on PCI electronics by Spanoudaki, V, Giokaris, N.D, Karabarbounis, A, Loudos, G.K, Maintas, D, Papanicolas, C.N, Paschalis, P, Stiliaris, E

“…A position-sensitive γ-camera is being currently designed at IASA. This camera will be used experimentally (development mode) in order to obtain an integrated…”
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Imaging of breast phantoms using a high-resolution position sensitive photomultiplier tube by Giokaris, N.D., Loudos, G.K., Maintas, D., Papapanagiotou, D., Nikita, K.S., Uzunoglu, N.K., Karabarbounis, A., Papanicolas, C.N., Stiliaris, E., Archimandritis, S.C., Varvarigou, A.D., Stefanis, C.N., Majewski, S., Weisen-berger, A., Pani, R., Scopinaro, F.

“…The results of studies conducted with a small field of view gamma camera based on a Position Sensitive Photomultiplier Tube (PSPMT) and a pixelized…”
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High-resolution and high-sensitivity SPECT imaging of breast phantoms by Loudos, G.K, Giokaris, N.D, Mainta, K, Sakelios, N, Stiliaris, E, Karabarbounis, A, Papanicolas, C.N, Spanoudaki, V, Nikita, K.S, Uzunoglu, N.K, Archimandritis, S.C, Varvarigou, A.D, Stefanis, K.N, Majewski, S, Weisenberger, A, Pani, R, Maintas, D

“…A small field of view gamma camera based on a Position Sensitive Photomultiplier Tube has been used for tomoscintigraphic imaging of breast phantoms. The…”
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Improving spatial resolution in SPECT with the combination of PSPMT based detector and iterative reconstruction algorithms by Loudos, G.K., Nikita, K.S., Uzunoglu, N.K., Giokaris, N.D., Papanicolas, C.N., Archimandritis, S.C., Varvarigou, D., Maintas, D.

“…This paper investigates the possibility of developing a SPECT system that combines the high spatial resolution of position sensitive photomultiplier tubes…”
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Use of the MPEG-4 ALS Architecture and Inter-channel Prediction for Multi-channel ECG Coding by Sgouros, N.P., Constantinou, I.P., Loudos, G.K., Kossida, S.A.

“…The electrocardiogram (ECG) is one of the most well studied medical signals. A large number of ECG processing algorithms have being proposed over the years…”
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Luminescence properties of LuYSiO/sub 5/:Ce, Gd/sub 2/SiO/sub 5/:Ce, and CsI:Tl single crystal scintillators under X-ray excitation, for use in medical imaging systems by Valais, I.G., Kandarakis, I.S., Nikolopoulos, D.N., Sianoudis, I.A., Loudos, G.K., Giokaris, N.D., Nikita, K.S., Cavouras, D.A., Dimitropoulos, N., Nomicos, C.D., Panayiotakis, G.S.

“…The luminescence of LuYSiO/sub 5/:Ce (LYSO:Ce) and Gd/sub 2/SiO/sub 5/:Ce (GSO:Ce) crystals was studied for use in tomographic medical X-ray imaging. Both…”
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An assessment of position sensitive photomultiplier tubes for high resolution 3D imaging by Loudos, G.K., Nikita, K.S., Mouravliansky, N.A., Uzunoglu, N.K., Matsopoulos, G.K., Giokaris, N.D., Karabarbounis, A., Papanicolas, C.N., Styliaris, E., Archimandritis, S.C., Varvarigou, A.D., Maintas, D., Stefanis, K.

“…The results of studies conducted with a small field of view camera based on a position sensitive photomultiplier tube (PSPMT) and a pixelized scintillator…”
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