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Communication Dans Un Congrès Année : 2013

Estimation of In Vivo Myocardial Fibre Strain Using an Architectural Atlas of the Human Heart

Résumé

We propose a methodology to estimate 3D+time maps of left ventricular (LV) fibre strain from human structural and dynamic MRI data. A biomechanical finite element model integrates fibre direction throughout the LV extracted from ex vivo human diffusion tensor MRI (DT-MRI) acquisition and motion tracked from tagged MRI (TMRI). This combination enables the estimation of fibre strain and its spatio-temporal variation throughout the cardiac cycle. The sensitivity of fibre strain estimation on the underlying fibre orientation is evaluated using a database of 7 DT-MRI and 1 TMRI datasets acquired on normal subjects. Our analysis indicates that the structure of the LV is designed for maximum homogeneity of fibre strain during ejection.

Dates et versions

hal-00941788 , version 1 (04-02-2014)

Identifiants

Citer

C. Casta, Y. Wang V., Y.-M. Zhu, B. R. Cowan, P. Croisille, et al.. Estimation of In Vivo Myocardial Fibre Strain Using an Architectural Atlas of the Human Heart. Functional Imaging and Modeling of the Heart, Jun 2013, London, United Kingdom. pp.208-215, ⟨10.1007/978-3-642-38899-6_25⟩. ⟨hal-00941788⟩
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