Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout
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2012
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IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD
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Resumo
Current positron emission tomography (PE T ) systems
have their detector design based on discrete scintillation
crystals. Spatial resolution of these systems are directly related
with the size of the crystal segments. On the other hand, cost
and complexity increase considerably as the size of the crystal
segments decreases. Detector design with continuous scintillator
is another approach that improves the energy resolution and
sensitivity without degrading the spatial resolution. In this work,
we report a method to determine the gamma interaction position
with depth of interaction (DOl) capability inside a monolithic
crystal coupled to a photodetector array. T he method is based
on estimating parameters of a model which describes the signal
distribution of the optical photons collected by the photodetector
array in a row-column summing readout scheme. Evaluation data
were simulated using the GATE framework (Geant4 Application
for Emission Tomography) to characterize the detector and to
compare the interaction position of the incident gamma with the
position registered by the detector.
Como referenciar
BONIFACIO, DANIEL A.B.; MORALLES, MAURICIO. Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout. In: IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD, October 29 - November 3, 2012, Anaheim, CA, USA. Proceedings... Piscataway, NJ: IEEE, 2012. p. 2606-2613. DOI: 10.1109/nssmic.2012.6551596. Disponível em: http://repositorio.ipen.br/handle/123456789/27628. Acesso em: 30 Dec 2025.
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