Performance evaluation of a new gamma imager for small animal SPECT applications

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dc.contributor.author Vaquero López, Juan José
dc.contributor.author Villena, José L.
dc.contributor.author Carlos, Álvaro de
dc.contributor.author Tapias, Gustavo
dc.contributor.author Sisniega, Alejandro
dc.contributor.author Desco Menéndez, Manuel
dc.contributor.author Lage Negro, Eduardo
dc.date.accessioned 2011-10-05T11:33:56Z
dc.date.available 2011-10-05T11:33:56Z
dc.date.issued 2007
dc.identifier.bibliographicCitation 2007 IEEE Nuclear Science Symposium Conference Record, 2007, vol. 5, p. 3355 - 3360
dc.identifier.isbn 978-1-4244-0922-8
dc.identifier.issn 1082-3654
dc.identifier.uri http://hdl.handle.net/10016/12230
dc.description Proceeding of: 2007 IEEE Nuclear Science Symposium Conference Record (NSS '07), Honolulu, Hawaii, USA, Oct. 27 - Nov. 3, 2007
dc.description.abstract Abstract–In this work we characterized a recently developed gamma imager for small animal SPECT applications. The Hamamatsu C9177 is a mini-gamma camera that integrates the detector and all the electronics, including the acquisition system, in a compact and portable housing. The detector is based on a high resolution parallel hole collimator, a CsI(NaI) crystal array and a PS-PMT (flat panel type). The active field of view is 41.9 x 41.9 mm2 and the assembly is optimized for 60 to 200 keV. The electronics in the housing includes the high voltage divider, an ASIC which converts the 64 anodes into Anger-like signals, ADCs which are fed with these signals and position and energy lookup tables which allow digital information for each detected photon to be obtained directly from the imager. In order to be able to obtain tomographic data and to improve the measurement protocols, we mounted the detector in a custom-built motorized gantry. We evaluated detector uniformity and energy resolution using a flood field image. Planar intrinsic spatial resolution and spatial linearity were assessed by stepping a capillary source across the detector surface and plotting the count profile for each individual crystal of the array. We additionally performed phantom studies to preliminarily characterize the tomographic performance. Energy resolution is 11.6% (mean), sensitivity is 2.54 cps/μCi and planar spatial resolution is 2.4 mm (CFOV 20% energy window) when the source is placed on the detector surface.
dc.description.sponsorship This work was supported in part by the Spanish Ministerio de Educación y Ciencia under Grant No. TEC2004-07052-C02, Comunidad de Madrid Grant No. GR/SAL/024104, and the CDTEAM project of the CENIT program (Spanish Ministerio de Industria).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IEEE
dc.rights © IEEE
dc.title Performance evaluation of a new gamma imager for small animal SPECT applications
dc.type bookPart
dc.type conferenceObject
dc.relation.publisherversion http://dx.doi.org/10.1109/NSSMIC.2007.4436851
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi 10.1109/NSSMIC.2007.4436851
dc.rights.accessRights openAccess
dc.relation.eventdate Oct. 27 - Nov. 3, 2007
dc.relation.eventplace Honolulu, Hawaii, USA
dc.relation.eventtitle 2007 IEEE Nuclear Science Symposium Conference Record (NSS '07)
dc.identifier.publicationfirstpage 3355
dc.identifier.publicationlastpage 3360
dc.identifier.publicationtitle 2007 IEEE Nuclear Science Symposium Conference Record
dc.identifier.publicationvolume 5
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