LV shape and motion: B-spline-based deformable model and sequential motion decomposition

Authors:
Guo Luo;P. A. Heng
Affiliations:
Dept. of Comput. Sci. & Eng., Chinese Univ. of Hong Kong, China;-
Venue:
IEEE Transactions on Information Technology in Biomedicine
Year:
2005

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Abstract

In this paper, we extend a previous work by J. Park and propose a uniform framework to reconstruct left ventricle (LV) geometry/motion from tagged MR images. In our work, the LV is modeled as a generalized prolate spheroid, and its motion is decomposed into four components-global translation, polar radial/z-axis compression, twisting, and bending. By formulating model parameters as tensor products of B-splines, we develop efficient algorithms to quickly reconstruct LV geometry/motion from extracted boundary contours and tracked planar tags. Experiments on both synthesized and in vivo data are also reported.