Key result
Finite element modelling using echocardiographic images successfully generated dynamic displays of cardiac deformation to allow quantitative analysis of regional wall dynamics and stress.
Finite element modeling using echocardiographic images provides a computational method to quantitatively analyze regional cardiac wall dynamics and stress.
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Enables quantitative regional wall mechanics assessment from routine echoes; leaves open prospective clinical validation and outcome correlation.
Echocardiographic short axis and two-chamber images were used to generate two- and three-dimensional models of the ventricles using finite brick elements. The cardiac borders were extracted by an automated edge detection algorithm. Subsequently, heuristic feature extraction determined the true shape of the heart throughout the cardiac cycle. Mechanical properties were assigned on the basis of reported myocardial tissue characteristics. The finite-element method was used to estimate elastic deformation at each brick in the ventricles. Dynamic displays of deformation were generated to provide a visual animation of cardiac mechanics throughout the cardiac cycle. The results allow quantitative analysis of regional wall dynamics and wall stress.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Seit et al. (2002) studied this question. Finite element modelling was evaluated on Estimation of elastic deformation and dynamic displays of deformation. Finite element modelling using echocardiographic images successfully generated dynamic displays of cardiac deformation to allow quantitative analysis of regional wall dynamics and stress.
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