Now showing items 1-7 of 7

  • Decentralized CUSUM change detection 

    Moustakides, G. V. (2006)
    We consider the problem of decentralized change detection using the CUSUM test. More than one sensors acquire independent signals and send their quantized version to a fusion center that uses this information to detect a ...
  • Design considerations for application of SiPMs in nuclear imaging 

    Efthimiou, N.; Argyropoulos, G.; Georgiou, M.; Fysikopoulos, E.; David, S.; Loudos, G.; Panayiotakis, G. (2010)
    Silicon Photomultiplier (SiPM) detectors are attractive candidates for the replacement of Photomultipliers in nuclear imaging. They are compact, provide high gain with low Vbias and have fast response. In addition, SiPMs ...
  • Development of a SIPM based gamma-ray imager using a Gd3Al 2Ga3O12:Ce (GAGG:Ce) scintillator array 

    Georgiou, M.; David, S.; Fysikopoulos, E.; Loudos, G. (2013)
    In this study we present the performance evaluation of a 6×6 Gd3Al2Ga3O12:Ce (GAGG:Ce) pixellated scintillator with 2×2×5mm 3 crystal size elements, coupled to a silicon photomultiplier array (ArraySL-4). Evaluation was ...
  • An efficient implementation on a low cost FPGA for photon detection in nuclear imaging 

    Fysikopoulos, E.; Georgiou, M.; Efthimiou, N.; David, S.; Loudos, G.; Matsopoulos, G. (2010)
    The aim of this study is to propose and evaluate a simple, open source, data acquisition (DAQ) tool, which provides accurate results for nuclear imaging applications. For this purpose a Xilinx Spartan3E Starter Kit, which ...
  • Evaluation of an imaging gamma probe based on R8900U-00-C12 PSPMT 

    Georgiou, M.; David, S.; Papadimitroulas, P.; Fysikopoulos, E.; Bregou, A.; Loudos, G.; Georgoulias, P. (2012)
    In this study we present the construction and the evaluation of a gamma probe based on a R8900U-00-C12 position sensitive photomultiplier tube coupled to a pixelated CsI(Tl) crystal array with 2mm x 2mm x 3mm crystal ...
  • Initial results on SiPM array based on a symmetric resistive voltage division readout 

    David, S.; Georgiou, M.; Fysikopoulos, E.; Efthimiou, N.; Paipais, T.; Kefalidis, L.; Loudos, G. (2012)
    The aim of this study is to design and apply a symmetric resistive voltage division matrix to read out the compact silicon photomultiplier array (SPMArray2 by SensL) photodetector for possible applications as gamma or PET ...
  • Photon dose kernels dataset for nuclear medicine dosimetry, using the GATE Monte Carlo toolkit 

    Papadimitroulas, P.; Loudos, G.; Georgoulias, P.; Kagadis, G. C. (2012)
    Photon dose point kernels (DPKs) were generated using the GATE toolkit for different media and for radionuclides of interest in nuclear medicine. In the present work the primary photon contribution of different isotopes ...