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dc.contributor.author | Rodríguez-Álvarez, María-José | es_ES |
dc.contributor.author | Sánchez Martínez, Filomeno | es_ES |
dc.contributor.author | Soriano Asensi, Antonio | es_ES |
dc.contributor.author | Iborra Carreres, Amadeo | es_ES |
dc.contributor.author | Mora Mora, Cibeles | es_ES |
dc.date.accessioned | 2014-03-31T06:42:34Z | |
dc.date.issued | 2011-10 | |
dc.identifier.issn | 0895-7177 | |
dc.identifier.uri | http://hdl.handle.net/10251/36727 | |
dc.description.abstract | In this paper we propose several methods of constructing the system matrix (SM) of a Computed Tomography (CT) scanner with two objectives: (1) to construct SMs in the shortest possible time and store them in an ordinary PC without losing quality, (2) to analyze the possible applications of the proposed method to 3D, taking into account SMs' sizes, computing time and reconstructed image quality. In order to build the SM, we propose two new field of view (FOV) pixellation schemes, based on a polar coordinate system (polar grid) by taking advantage of the polar rotation symmetries of CT devices. Comparisons between the SMs proposed are performed using two phantom and a real CT-simulator images. Global error, contrast, noise and homogeneity of the reconstructed images are discussed. © 2010 Elsevier Ltd. | es_ES |
dc.description.sponsorship | This work is partially supported by Generalitat Valenciana GVPRE/2008/303 and the Spanish M.E.C. Grant MTM2009-08587. | en_EN |
dc.format.extent | 10 | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Mathematical and Computer Modelling | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | ART | es_ES |
dc.subject | Computerized tomography imaging | es_ES |
dc.subject | Polar grid | es_ES |
dc.subject | Rotation symmetries | es_ES |
dc.subject | System matrix | es_ES |
dc.subject.classification | MATEMATICA APLICADA | es_ES |
dc.title | Exploiting symmetries for weight matrix design in CT imaging | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1016/j.mcm.2010.12.004 | |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//GVPRE%2F2008%2F303/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//MTM2009-08587/ES/Ecuaciones Diferenciales Aleatorias Y Aplicaciones/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Matemática Aplicada - Departament de Matemàtica Aplicada | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto de Instrumentación para Imagen Molecular - Institut d'Instrumentació per a Imatge Molecular | es_ES |
dc.description.bibliographicCitation | Rodríguez-Álvarez, M.; Sánchez Martínez, F.; Soriano Asensi, A.; Iborra Carreres, A.; Mora Mora, C. (2011). Exploiting symmetries for weight matrix design in CT imaging. Mathematical and Computer Modelling. 54(7-8):1655-1664. https://doi.org/10.1016/j.mcm.2010.12.004 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.mcm.2010.12.004 | es_ES |
dc.description.upvformatpinicio | 1655 | es_ES |
dc.description.upvformatpfin | 1664 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 54 | es_ES |
dc.description.issue | 7-8 | es_ES |
dc.relation.senia | 200627 | |
dc.contributor.funder | Ministerio de Ciencia e Innovación | es_ES |
dc.contributor.funder | Generalitat Valenciana | es_ES |