rPET detectors design and data processing

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dc.contributor.author Vaquero López, Juan José
dc.contributor.author Rincón, Lorena
dc.contributor.author Abella García, Mónica
dc.contributor.author Vicente, Esther
dc.contributor.author Desco Menéndez, Manuel
dc.contributor.author Lage Negro, Eduardo
dc.date.accessioned 2011-09-22T10:05:11Z
dc.date.available 2011-09-22T10:05:11Z
dc.date.issued 2005-10
dc.identifier.bibliographicCitation 2005 IEEE Nuclear Science Symposium Conference Record, vol. 5, Oct. 2005, p. 2885 - 2889
dc.identifier.isbn 0-7803-9221-3
dc.identifier.issn 1082-3654
dc.identifier.uri http://hdl.handle.net/10016/12145
dc.description Proceeding of: 2005 IEEE Nuclear Science Symposium Conference Record, Puerto Rico, October 23-29, 2005
dc.description.abstract Small animal PET systems based on rotating planar detectors posses some interesting advantages for high sensitivity, high resolution imaging. We have designed the rPET detectors based on MLS crystals assembled on a 30 x 30 matrix optically coupled to a flat-panel PS-PMT. Weighted position readout circuits pre-process the 64 signals from the 8 x 8 anodes matrix, which are digitized using a charge-integrating converter. The amplification electronics, including the trigger ouput for coincidence detection, and the high voltage supply are integrated in a three PCBs stack that forms the base attached to the back of the PMT. The whole assembly is enclosed in a light tight, lead(Pb) shielded aluminum box. The detectors are mounted on a rotating gantry with more than 180 degrees rotation span. The digitized events are screened and histogramed, and a modified center of gravity algorithm removes from the position calculation those signals with poor signal to noise ratio. Apparent mean crystal size on the 511 keV field-flood images is 0.6 mm, mean peak-to-valley ratio is better than 8, and intrinsic resolution is 1.5 mm at the central row, with the energy window wide open. Sensitivity (CPS) for a pair of these detectors set in coincidence at 160 mm distance is 1%
dc.description.sponsorship Part of this work is founded by the IM3 network (G03/185 Ministerio de Sanidad), with grants from the Ministerio de Educación y Ciencia, project TEC2004-07052-C02-01, and Ministerio de Industria, Turismo y Comercio project FIT-330101-2004-3. J.J. Vaquero has support from the “Ramón y Cajal” Program, Ministerio de Educación y Ciencia
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE
dc.rights © IEEE
dc.subject.other Gamma detectors
dc.subject.other Position sensitive photomultiplier tubes
dc.subject.other Positron Emission Tomography (PET)
dc.subject.other Small animal imaging
dc.subject.other Biomedical nuclear imaging
dc.title rPET detectors design and data processing
dc.type bookPart
dc.type conferenceObject
dc.relation.publisherversion http://dx.doi.org/10.1109/NSSMIC.2005.1596828
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi 10.1109/NSSMIC.2005.1596828
dc.rights.accessRights openAccess
dc.relation.eventdate October 23-29, 2005
dc.relation.eventplace Puerto Rico
dc.relation.eventtitle 2005 IEEE Nuclear Science Symposium Conference Record
dc.identifier.publicationfirstpage 2885
dc.identifier.publicationlastpage 2889
dc.identifier.publicationtitle 2005 IEEE Nuclear Science Symposium Conference Record
dc.identifier.publicationvolume 5
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