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Frequency selective signal extrapolation for compensation of missing data in sinograms

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dc.affiliation.dptoUC3M. Departamento de Bioingenieríaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Biomedical Imaging and Instrumentation Groupes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: BSEL - Laboratorio de Ciencia e Ingeniería Biomédicaes
dc.contributor.authorLópez Herraiz, Joaquín
dc.contributor.authorEspaña, Samuel
dc.contributor.authorVicente, Esther
dc.contributor.authorHerranz, Elena
dc.contributor.authorDesco Menéndez, Manuel
dc.contributor.authorVaquero López, Juan José
dc.contributor.authorUdías, José Manuel
dc.date.accessioned2011-09-30T08:18:12Z
dc.date.available2011-09-30T08:18:12Z
dc.date.issued2008-10
dc.descriptionProceeding of: 2008 IEEE Nuclear Science Symposium Conference Record (NSS '08), Dresden, Germany, 19-25 Oct. 2008
dc.description.abstractWe present a method to compensate for missing projection data in positron emission tomography (PET), which may result from gaps between adjacent detectors or from malfunctioning detectors. To prevent artifacts in the reconstruction when using Fourier rebinning (FORE) or analytical reconstruction algorithms, filling the data gaps is required. This new approach for sinogram data interpolation prior to reconstruction is based on a simple iterative freq uency selective signal extrapolation method initially proposed and successfully applied for error concealment in image and video communication. In this work the method has been improved taking advantage of well known restrictions in the allowed region of frequencies of the sinograms. We compare quantitatively the results of this technique with previously proposed gap filling procedures in both the sinograms and in their reconstructed images. The proposed technique outperforms those methods without requiring too much computational time.
dc.description.sponsorshipThis work was supported in part by the MEC (FPA2007-07393), CDTEAM (CENIT-Ingenio 2010) Ministerio de Industria, Spain, CPAN (Consolider-Ingenio 2010) CSPD-2007-00042 projects, and the RECAVA-RETIC network. Vicente acknowledges support from a CSIC-JAE predoctoral fellowship.
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitation2008 IEEE Nuclear Science Symposium Conference Record, oct. 2008, p. 4299-4302
dc.identifier.doi10.1109/NSSMIC.2008.4774234
dc.identifier.isbn978-1-4244-2714-7
dc.identifier.issn1082-3654
dc.identifier.publicationfirstpage4299
dc.identifier.publicationlastpage4302
dc.identifier.publicationtitle2008 IEEE Nuclear Science Symposium Conference Record
dc.identifier.urihttps://hdl.handle.net/10016/12216
dc.language.isoeng
dc.publisherIEEE
dc.relation.eventdateOctober 19-25, 2008
dc.relation.eventplaceDresden, Germany
dc.relation.eventtitle2008 IEEE Nuclear Science Symposium Conference Record (NSS '08)
dc.relation.publisherversionhttp://dx.doi.org/10.1109/NSSMIC.2008.4774234
dc.rights© IEEE
dc.rights.accessRightsopen access
dc.subject.ecienciaBiología y Biomedicina
dc.titleFrequency selective signal extrapolation for compensation of missing data in sinograms
dc.typeconference paper*
dspace.entity.typePublication
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