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Amir A.Amini, Yasheng Chen, Mohamed Elayyadi, & Petia Radeva. (2001). Tag Surface Reconstruction and Tracking of Myocardial Beads from SPAMM-MRI with Parametric B-Spline Surfaces. TMI - IEEE Transactions on Medical Imaging, 94–103.
Abstract: Magnetic resonance imaging (MRI) is unique in its ability to noninvasively and selectively alter tissue magnetization, and create tag planes intersecting image slices. The resulting grid of signal voids allows for tracking deformations of tissues in otherwise homogeneous-signal myocardial regions. In this paper, we propose a specific spatial modulation of magnetization (SPAMM) imaging protocol together with efficient techniques for measurement of three-dimensional (3-D) motion of material points of the human heart (referred to as myocardial beads) from images collected with the SPAMM method. The techniques make use of tagged images in orthogonal views by explicitly reconstructing 3-D B-spline surface representation of tag planes (tag planes in two orthogonal orientations intersecting the short-axis (SA) image slices and tag planes in an orientation orthogonal to the short-axis tag planes intersecting long-axis (LA) image slices). The developed methods allow for viewing deformations of 3-D tag surfaces, spatial correspondence of long-axis and short-axis image slice and tag positions, as well as nonrigid movement of myocardial beads as a function of time.
Keywords: B-spline surfaces, cardiac motion, myocardial beads, myocardial infarction, tagged MRI.
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J.M. Sanchez, & X. Binefa. (1999). Automatic digital TV commercial recognition..
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M. Bressan. (2001). Un analisis de viabilidad para la confeccion semisupervisada de un mapa de usos del suelo de Catalunya.
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David Lloret, & Derek L.G. Hill. (1999). System for live fusion of 2-D ultrasound scans to pre-interventional MR volumes of a patient..
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C. Cortes. (2001). Definicio d´un sensor de visio artificial per a l´ajust automatic de tintes en la impressio de pape.
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Josep Llados, & Enric Marti. (1999). A graph-edit algorithm for hand-drawn graphical document recognition and their automatic introduction into CAD systems..
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Felipe Lumbreras. (2001). Segmentation, classification and modelization of textures by means of multiresolution decomposition techniques..
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David Lloret, Antonio Lopez, Joan Serrat, & Juan J. Villanueva. (1999). Creaseness-based computer tomography and magnetic resonance registration: Comparison with the mutual information method..
Abstract: This paper describes a method which uses the skull as a landmark for automatic registration of computer tomography to magnetic resonance (MR) images. First, the skull is extracted from both images using a new creaseness operator. Then, the resulting creaseness images are used to build a hierarchic structure which permits a robust and fast search. We have justified experimentally the performance of several choices of our algorithm, and we have thoroughly tested its accuracy and robustness against the well-known mutual information method for five different pairs of images. We have found both comparable, and for certain MR images the proposed method achieves better performance.
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M. Navarro. (1999). Reconeixement d´objectes amb metodes basats en color: avaluacio en un entorn poc controlat.
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J.M. Sanchez. (1999). Semantic retrieval from digital video libraries in the TV commercials domain.
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X. Orriols. (1999). Models locals lineals per a l´analisi d´imatges.
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Cristina Cañero. (1999). Deformable models applied in Medical Imaging.
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F. Pañella. (1999).
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D. Smith. (1999). Solving the mean string problem for 2D shapes.
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C. Mariño, V.M. Gulias, M.G. Penas, M. Penedo, Victor Leboran, A. Mosquera, et al. (2001). Sistema de Interpretacion Automatica de Secuencias solo Basado en un Servidor vod..
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