Parcourir par auteur "Efthimiou, N."
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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 ... -
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 ... -
Fully Digital FPGA-Based Data Acquisition System for Dual Head PET Detectors
Fysikopoulos, E.; Georgiou, M.; Efthimiou, N.; David, S.; Loudos, G.; Matsopoulos, G. (2014)We present the development of a new fully digital, flexible, cost-efficient data acquisition system (DAQ) suitable for dual head Positron Emission Tomography (PET) scanners for small animal imaging applications. A free-running ... -
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 ... -
Initial results on SiPMs performance for use in medical imaging
Efthimiou, N.; Georgiou, M.; Argyropoulos, G.; Fysikopoulos, E.; David, S.; Loudos, G.; Panayiotakis, G. (2011)Silicon photomultiplier (SiPMs) detectors are attractive candidates for replacing position sensitive photomultipliers in nuclear imaging. They are compact, they provide high gain with low bias voltage and show better ... -
A Spartan3E-based low-cost system for gamma-ray detection in small single photon emission computed tomography or positron emission tomography systems
Fysikopoulos, E.; Georgiou, M.; Efthimiou, N.; David, S.; Loudos, G.; Matsopoulos, G. (2011)The development and assessment of a readout system based on field programmable gate arrays (FPGA) for dedicated nuclear medicine cameras is presented. We have used Xilinx Spartan3E starter kit, which is one of the simplest ...