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CVPR
2008
IEEE

Meshless deformable models for LV motion analysis

8 years 8 months ago
Meshless deformable models for LV motion analysis
We propose a novel meshless deformable model for in vivo cardiac left ventricle (LV) 3D motion estimation. As a relatively new technology, tagged MRI (tMRI) provides a direct and noninvasive way to reveal local deformation of the myocardium, which creates a large amount of heart motion data which requiring quantitative analysis. In our study, we sample the heart motion sparsely at intersections of three sets of orthogonal tagging planes and then use a new meshless deformable model to recover the dense 3D motion of the myocardium temporally during the cardiac cycle. We compute external forces at tag intersections based on tracked local motion and redistribute the force to meshless particles throughout the myocardium. Internal constraint forces at particles are derived from local strain energy using a Moving Least Squares (MLS) method. The dense 3D motion field is then computed and updated using the Lagrange equation. The new model avoids the singularity problem of mesh-based models and...
Xiaoxu Wang, Dimitris N. Metaxas, Ting Chen, Leon
Added 07 Dec 2010
Updated 07 Dec 2010
Type Conference
Year 2008
Where CVPR
Authors Xiaoxu Wang, Dimitris N. Metaxas, Ting Chen, Leon Axel
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