Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Título da fonte: | Repositório Institucional do IPEN |
Texto Completo: | http://repositorio.ipen.br/handle/123456789/27628 |
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. |
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2017-07-06T12:40:35Z2017-07-06T12:40:35ZOctober 29 - November 3, 2012http://repositorio.ipen.br/handle/123456789/27628Current 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.Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-07-06T12:40:35Z No. of bitstreams: 1 23856.pdf: 1450753 bytes, checksum: 900a473857a35aae8539df8f2b841dfd (MD5)Made available in DSpace on 2017-07-06T12:40:35Z (GMT). No. of bitstreams: 1 23856.pdf: 1450753 bytes, checksum: 900a473857a35aae8539df8f2b841dfd (MD5)2606-2613IEEEModeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readoutinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectNSS/MICIPiscataway, NJAnaheim, CA, USABONIFACIO, DANIEL A.B.MORALLES, MAURICIOIEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORDinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN238562012MORALLES, MAURICIO17-07Proceedings923MORALLES, MAURICIO:923:310:NORIGINAL23856.pdf23856.pdfapplication/pdf1450753http://repositorio.ipen.br/bitstream/123456789/27628/1/23856.pdf900a473857a35aae8539df8f2b841dfdMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/27628/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/276282020-06-29 12:25:51.244oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102020-06-29T12:25:51Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false |
dc.title.pt_BR.fl_str_mv |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
title |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
spellingShingle |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout BONIFACIO, DANIEL A.B. |
title_short |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
title_full |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
title_fullStr |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
title_full_unstemmed |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
title_sort |
Modeling of 3D gamma interaction position in a monolithic scintillator block with a row-column summing readout |
author |
BONIFACIO, DANIEL A.B. |
author_facet |
BONIFACIO, DANIEL A.B. MORALLES, MAURICIO IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD |
author_role |
author |
author2 |
MORALLES, MAURICIO IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
BONIFACIO, DANIEL A.B. MORALLES, MAURICIO IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD |
description |
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. |
publishDate |
2017 |
dc.date.evento.pt_BR.fl_str_mv |
October 29 - November 3, 2012 |
dc.date.accessioned.fl_str_mv |
2017-07-06T12:40:35Z |
dc.date.available.fl_str_mv |
2017-07-06T12:40:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
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http://repositorio.ipen.br/handle/123456789/27628 |
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http://repositorio.ipen.br/handle/123456789/27628 |
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openAccess |
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2606-2613 |
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I |
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IEEE |
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IEEE |
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