Πλοήγηση ανά Συγγραφέα "Loudos, G."
Αποτελέσματα 1-20 από 22
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Design considerations for application of SiPMs in nuclear imaging
(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
(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
(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 a SiPM array coupled to a Gd3Al2Ga3O12: Ce (GAGG: Ce) discrete scintillator
(2015)Purpose: In this study, we present the results of the evaluation of the SensL ArraySL-4 photo-detector, coupled to a 6×6 GAGG:Ce scintillator array, with 2×2×5mm3 crystal size elements for possible applications in medical ... -
Evaluation of an imaging gamma probe based on R8900U-00-C12 PSPMT
(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 ... -
Evaluation of powder/granular Gd2O2S:Pr scintillator screens in single photon counting mode under 140 keV excitation
(2013)The aim of this paper is the evaluation of an alternative, low cost solution for the gamma detector in planar imaging. It is based on a powder scintillator, well established in X-ray imaging, and could be further exploited ... -
Experimental and simulation studies for the optimization of dedicated scintimammography cameras
(2012)The main drawback of scintimammography with conventional gamma cameras is the large distance between detector and breast, which limits imaging performance and adds significant background noise from the heart and other ... -
Fully Digital FPGA-Based Data Acquisition System for Dual Head PET Detectors
(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 ... -
Imaging performance of silicon photomultipliers coupled to BGO and CsI: Na arrays
(2013)The aim of this study is to investigate the imaging performance of a silicon photomultiplier array (ArraySL-4) photodetector for possible PET and potentially SPECT applications using BGO and CsI(Na) pixellated scintillators. ... -
Initial results on SiPM array based on a symmetric resistive voltage division readout
(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
(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 ... -
Internal radionuclide dosimetry using quantitative 3-D nuclear medical imaging
(2009)Quantitative three-dimensional nuclear medical imaging plays a continuously increasing role in radionuclide dosimetry, allowing the development of patient - specific treatment planning systems. The established method for ... -
Investigation of attenuation correction in SPECT using textural features, Monte Carlo simulations, and computational anthropomorphic models
(2015)PurposeTo present and evaluate a new methodology to investigate the effect of attenuation correction (AC) in single-photon emission computed tomography (SPECT) using textural features analysis, Monte Carlo techniques, and ... -
Low cost FPGA based data acquisition system for a gamma imaging probe
(2013)We present the development of a low cost field programmable gate arrays (FPGA) based data acquisition system for a gamma imaging probe proposed for sentinel lymph node (SLN) mapping. Radioguided surgery using a gamma probe ... -
Optimization of a gamma imaging probe for axillary sentinel lymph mapping
(2012)Sentinel lymph node (SLN) mapping is a technique for assessing whether early-stage invasive breast cancer has metastasized, thus determining prognosis and treatment options. SLN identification is achieved using the blue-dye ... -
Patient-specific internal radionuclide dosimetry
(2010)The development of patient-specific treatment planning systems is of outmost importance in the development of radionuclide dosimetry, taking into account that quantitative three-dimensional nuclear medical imaging can be ... -
Photon dose kernels dataset for nuclear medicine dosimetry, using the GATE Monte Carlo toolkit
(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 ... -
A radionuclide dosimetry toolkit based on material-specific Monte Carlo dose kernels
(2009)Objective We sought to develop a user-friendly dosimetry toolkit that should aid the improvement of the quality of radionuclide therapy, which is critically dependent on patient-specific planning of each treatment. Methods ... -
A review of PET normalization: striving for count rate uniformity
(2013)The advent of PET instrumentation signaled the beginning of a new perspective in nuclear medicine diagnostic imaging. PET systems rely on several corrections that must be applied in order to establish accurate and reliable ...