A time efficient optical model for gate simulation of a LYSO scintillation matrix used in PET applications
Carregando...
Data
Data de publicação
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
IEEE Transactions on Nuclear Science
Exportar
Resumo
A time efficient optical model is proposed for GATE
simulation of a LYSO scintillation matrix coupled to a photomultiplier. The purpose is to avoid the excessively long computation time
when activating the optical processes in GATE. The usefulness of
the model is demonstrated by comparing the simulated and experimental energy spectra obtained with the dual planar head equipment for dosimetry with a positron emission tomograph (DoPET).
The procedure to apply the model is divided in two steps. Firstly, a
simplified simulation of a single crystal element of DoPET is used
to fit an analytic function that models the optical attenuation inside the crystal. In a second step, the model is employed to calculate the influence of this attenuation in the energy registered by the
tomograph. The use of the proposed optical model is around three
orders of magnitude faster than a GATE simulation with optical
processes enabled. A good agreement was found between the experimental and simulated data using the optical model. The results
indicate that optical interactions inside the crystal elements play an
important role on the energy resolution and induce a considerable
degradation of the spectra information acquired by DoPET. Finally, the same approach employed by the proposed optical model
could be useful to simulate a scintillation matrix coupled to a photomultiplier using single or dual readout scheme.
Como referenciar
BONIFACIO, DANIEL A.B.; BELCARI, NICOLA; MOEHRS, SASCHA; MORALLES, MAURICIO; ROSSO, VALERIA; VECCHIO, SARA; GUERRA, ALBERTO DEL. A time efficient optical model for gate simulation of a LYSO scintillation matrix used in PET applications. IEEE Transactions on Nuclear Science, v. 57, n. 5, p. 2483-2489, 2010. DOI: 10.1109/TNS.2010.2062536. Disponível em: http://repositorio.ipen.br/handle/123456789/8230. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.