Misalignments calibration in small-animal PET scanners based on rotating planar detectors and parallel-beam geometry

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dc.contributor.author Abella García, Mónica
dc.contributor.author Vicente, Esther
dc.contributor.author Rodríguez Ruano, A.
dc.contributor.author España, Samuel
dc.contributor.author Desco Menéndez, Manuel
dc.contributor.author Udías, José Manuel
dc.contributor.author Vaquero López, Juan José
dc.contributor.author Lage Negro, Eduardo
dc.date.accessioned 2012-10-29T13:12:30Z
dc.date.available 2012-10-29T13:12:30Z
dc.date.issued 2012-10
dc.identifier.bibliographicCitation Physics in Medicine and Biology, (2012), 57(22), 7493-7518
dc.identifier.issn 0031-9155 (Print)
dc.identifier.issn 1361-6560 (Online)
dc.identifier.uri http://hdl.handle.net/10016/15775
dc.description.abstract Technological advances have improved the assembly process of PET detectors, resulting in quite small mechanical tolerances. However, in high-spatialresolution systems, even submillimetric misalignments of the detectors may lead to a notable degradation of image resolution and artifacts. Therefore, the exact characterization of misalignments is critical for optimum reconstruction quality in such systems. This subject has been widely studied for CT and SPECT scanners based on cone beam geometry, but this is not the case for PET tomographs based on rotating planar detectors. The purpose of this work is to analyze misalignment effects in these systems and to propose a robust and easy-to-implement protocol for geometric characterization. The result of the proposed calibration method, which requires no more than a simple calibration phantom, can then be used to generate a correct 3D-sinogram from the acquired list mode data.
dc.description.sponsorship This work was partially funded by the AMIT project (CEN-20101014) from the CDTICENIT program, RECAVA-RETIC Network (RD09/0077/00087), projects TEC2010-21619-C04-01 and TEC2011-28972-C02-01 from the Spanish Ministerio de Ciencia e Innovación, PRECISION grant IPT-300000-2010-3, CPAN (CSD-2007-00042@Ingenio2010), MEC (FPA2010-17142) and ARTEMIS program (S2009/DPI-1802) from the Spanish Comunidad de Madrid and EU-ERDF program.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher IOP Publishing on behalf of the Institute of Physics and Engineering in Medicine
dc.rights © Institute of Physics and Engineering in Medicine
dc.subject.other PET
dc.subject.other Image quality
dc.subject.other Image analysis
dc.title Misalignments calibration in small-animal PET scanners based on rotating planar detectors and parallel-beam geometry
dc.type article
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1088/0031-9155/57/22/7493
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi 10.1088/0031-9155/57/22/7493
dc.rights.accessRights openAccess
dc.relation.projectID Comunidad de Madrid. S2009/DPI-1802/ARTEMIS
dc.relation.projectID Gobierno de España. TEC2011-28972-C02-01
dc.relation.projectID Gobierno de España. TEC2010-21619-C04-01
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 7493
dc.identifier.publicationissue 22
dc.identifier.publicationlastpage 7518
dc.identifier.publicationtitle Physics in Medicine and Biology
dc.identifier.publicationvolume 57
dc.identifier.uxxi AR/0000011198
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