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dc.contributor.authorLedesma-Carbayo, María Jesús
dc.contributor.authorKybic, Jan
dc.contributor.authorDesco, Manuel
dc.contributor.authorSantos, Andrés
dc.contributor.authorSühling, Michael
dc.contributor.authorHunziker, Patrick
dc.contributor.authorUnser, Michael
dc.date.accessioned2012-02-23T09:07:59Z
dc.date.available2012-02-23T09:07:59Z
dc.date.issued2005-09
dc.identifier.citationLEDESMA-CARBAYO, M. - KYBIC, J. - DESCO, M. - SANTOS, A. - SÜHLING, M. - et al.: Spatio-Temporal Non-Rigid Registration for Ultrasound Cardiac Motion Estimation. IEEE Transactions on Medical Imaging. 2005, vol. 24, no. 9, p. 1113-1126. ISSN 0278-0062. DOI: 10.1109/TMI.2005.852050eng
dc.identifier.urihttp://hdl.handle.net/10467/9186
dc.description.abstractWe propose a new spatio-temporal elastic registration algorithm for motion reconstruction from a series of images. The specific application is to estimate displacement fields from two-dimensional ultrasound sequences of the heart. The basic idea is to find a spatio-temporal deformation field that effectively compensates for the motion by minimizing a difference with respect to a reference frame. The key feature of our method is the use of a semi-local spatio-temporal parametric model for the deformation using splines, and the reformulation of the registration task as a global optimization problem. The scale of the spline model controls the smoothness of the displacement field. Our algorithm uses a multiresolution optimization strategy to obtain a higher speed and robustness. We evaluated the accuracy of our algorithm using a synthetic sequence generated with an ultrasound simulation package, together with a realistic cardiac motion model. We compared our new global multiframe approach with a previous method based on pairwise registration of consecutive frames to demonstrate the benefits of introducing temporal consistency. Finally, we applied the algorithm to the regional analysis of the left ventricle. Displacement and strain parameters were evaluated showing significant differences between the normal and pathological segments, thereby illustrating the clinical applicability of our method.eng
dc.language.isocescze
dc.publisherIEEEcze
dc.rights© 2005 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.eng
dc.subjectcardiac motioneng
dc.subjectelastic registrationeng
dc.subjectparametric modelseng
dc.subjectsplineseng
dc.subjecttemporal modelseng
dc.titleSpatio-Temporal Nonrigid Registration for Ultrasound Cardiac Motion Estimationcze
dc.typečlánek z tištěného periodikacze
dc.identifier.doi10.1109/TMI.2005.852050
dc.identifier.doihttp://dx.doi.org/10.1109/TMI.2005.852050


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