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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Cardiac Motion Recovery and Boundary Conditions Estimation by Coupling an Electromechanical Model and Cine-MRI Data
verfasst von : Florence Billet, Maxime Sermesant, Hervé Delingette, Nicholas Ayache
Erschienen in: Functional Imaging and Modeling of the Heart
Verlag: Springer Berlin Heidelberg
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We present a method for cardiac motion recovery using the adjustment of an electromechanical model of the heart to cine MRI. This approach is based on a proactive model which consists in a constrained minimisation of an energy coupling the model and the data. The presented method relies on specific image features in order to constrain the motion of the endocardia and epicardium and impose boundary conditions at the base. Thus, image intensity and gradient information are used to constrain the motion of the myocardium surfaces while a 3D block matching technique leads to the motion estimation of base vertices. Finally, we show that the implicit time integration of those forces and personalised boundary conditions lead to a better cardiac motion recovery from cine-MR images.