Design of DOI PET detector Modules using phoswich and SIPMs: First Results

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Show simple item record Vaquero López, Juan José Sánchez, J. J. Udías, José Manuel Guerra, Pedro Desco Menéndez, Manuel Lage Negro, Eduardo 2015-02-25T10:46:54Z 2015-02-25T10:46:54Z 2011
dc.identifier.bibliographicCitation 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC): Valencia, Spain. 23-29 October 2011 (2011). IEEE, 3311-3313.
dc.identifier.isbn 978-1-4673-0118-3
dc.identifier.issn 1082-3654
dc.description Proceedings of: 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). Valencia, Spain, 23-29 October 2011
dc.description.abstract PET detector modules that implement depth of interaction information reduce uncertainties about the actual line-of-response after positron annihilation. This, in turn, has an effect in the spatial resolution and uniformity across the field of view of the reconstructed image. It also has an effect on the system sensitivity since it enables the use of thicker crystal with respect to a non-DOI system without deteriorating significantly the spatial resolution. In this work we evaluate a DOI detector design based on a scintillator phoswich of two types of pixelated crystals with different time decay constants. A matrix of silicon phomultipliers (SiPM) was coupled to this crystal array without any light-guide, and its outputs were connected to an anger logic type of charge divider which outputs were buffered using a transimpedance amplifier. These position signals were digitized using charge-to-digital converters, and the time decay constant of the crystal of interaction was measured using a delayed charge method. Previous works reported in the literature have demonstrated that this scheme for DOI PET detectors produce very good results in terms of spatial and energy resolution; however, the replacement of PMT with a SiPM matrix introduces some uncertainties that required further study. SiPM have demonstrated their good imaging capabilities when used with pixelated crystal scintillators, and their good timing performance allow us to predict that the DOI resolution was not going to be a problem with this technology. In this work we present quantitative results that assess the goodness of these detectors for its use on small-animal PET scanners.
dc.description.sponsorship This work was supported in part by the CENIT-AMIT Ingenio 2010, TEC2008-06715 (Ministerio de Ciencia e Innovacion) RETIC-RECAVA (Ministerio de Sanidad y Consumo) ARTEMIS S2009/DPI-1802 (Comunidad de Madrid), and EU-FP7, FMT-XCT-201792.
dc.format.extent 3
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Ieee - The Institute Of Electrical And Electronics Engineers, Inc
dc.rights © 2011 IEEE.
dc.subject.other Image reconstruction
dc.subject.other Medical image processing
dc.subject.other Photomultipliers
dc.subject.other Positron annihilation
dc.subject.other Positron emission tomography
dc.subject.other Silicon
dc.subject.other Solid scintillation detectors
dc.title Design of DOI PET detector Modules using phoswich and SIPMs: First Results
dc.type conferenceObject
dc.type bookPart
dc.description.status Publicado
dc.subject.eciencia Biología y Biomedicina
dc.subject.eciencia Medicina
dc.identifier.doi 10.1109/NSSMIC.2011.6152597
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2008-06715
dc.relation.projectID Comunidad de Madrid. S2009/DPI-1802/ARTEMIS
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/201792
dc.type.version acceptedVersion
dc.relation.eventdate 23-29 October 2011
dc.relation.eventplace Valencia, España
dc.relation.eventtitle 2011 IEEE Nuclear Science Symposiun and Medical Imaging Conference (NSS-MIC)
dc.relation.eventtype proceeding
dc.identifier.publicationfirstpage 3311
dc.identifier.publicationlastpage 3313
dc.identifier.publicationtitle 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)
dc.identifier.uxxi CC/0000016113
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