Publication: Modeling the acquisition front-end in high resolution gamma-ray imaging
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2006-06
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IEEE
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Abstract
The availability of synthetic realistic data eases design optimization, algorithm evaluation and verification of any digital system where a significant amount of digital signal processing is performed. The evolution of positron emission tomography cameras towards continuous sampling of individual position-sensitive photomultiplier anodes with processing algorithms implemented on digital programmable logic devices creates a new framework where new approaches to the γ-event detection are possible. We have developed a system model of the acquisition chain, including multi-layer phoswich, photomultiplier, front-end analog electronics, data acquisition and digital processing. This processing includes estimation algorithms for the most relevant event parameters: energy, layer-of-interaction, time picking-off and event location. The selected simulation platform couples gently to digital hardware simulation tools, in such a way that implemented models may generate real-like stimuli for the digital system under development. The modeling of the whole front-end electronics enables deeper understanding and tuning of different system trade-offs and provides a rapid and soft transition between specification and hardware development
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Cameras, Data acquisition, Gamma-ray detection, High energy physics instrumentation computing, Nuclear electronics, Photomultipliers, Position sensitive particle detectors, Positron Emission Tomography (PET), Programmable logic devices, Signal processing
Bibliographic citation
IEEE Transactions on Nuclear Science, 2006, vol. 53, n. 3, p. 1150 - 1155