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FHTW02 | Dr. Matteo Salvador | Whole-heart electromechanical simulations using latent neural...
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Speaker: Dr Matteo Salvador (Stanford University)
Date: 3rd Jun 2024 - 11:30 to 11:50
Venue: INI Seminar Room 1
Title: Whole-heart electromechanical simulations using latent neural ordinary differential equations
Event: (FHTW02) Fickle Heart: The intersection of UQ, AI and Digital Twins
Abstract: Co-Authors: Marina Strocchi, Francesco Regazzoni, Christoph Augustin, Luca Dede', Steven Niederer, Alfio Quarteroni.
Cardiac digital twins provide a physics- and physiology-informed framework for predictive and personalized medicine. However, high-fidelity multi-scale and multi-physics cardiac models remain a barrier to adoption due to their high computational cost and the large number of model evaluations required for patient-specific personalization. Artificial intelligence-based methods can enable the creation of fast and accurate whole-heart digital twins. We use Latent Neural Ordinary Differential Equations (LNODEs) to learn the temporal pressure-volume dynamics of a heart failure patient. Our LNODE-based surrogate model is trained from 400 3D-0D whole-heart closed-loop electromechanical simulations, taking into account 43 model parameters describing cell-to-organ scale cardiac electromechanics and cardiovascular hemodynamics. The trained system of LNODEs provides a compact and efficient representation of the 3D-0D model in a latent space using a feed-forward fully connected artificial neural network that retains 3 hidden layers with 13 neurons per layer, enabling faster than real-time numerical simulations of cardiac function on a single processor. This surrogate model is employed to perform global sensitivity analysis and robust parameter estimation with uncertainty quantification in time frames compatible with clinical practice, still using a single processor. This framework introduces several computational tools for digital twinning in computational cardiology.
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The Isaac Newton Institute is a national and international visitor research institute. It runs research programmes on selected themes in mathematics and the mathematical sciences with applications over a wide range of science and technology. It attracts leading mathematical scientists from the UK and overseas to interact in research over an extended period.
Date: 3rd Jun 2024 - 11:30 to 11:50
Venue: INI Seminar Room 1
Title: Whole-heart electromechanical simulations using latent neural ordinary differential equations
Event: (FHTW02) Fickle Heart: The intersection of UQ, AI and Digital Twins
Abstract: Co-Authors: Marina Strocchi, Francesco Regazzoni, Christoph Augustin, Luca Dede', Steven Niederer, Alfio Quarteroni.
Cardiac digital twins provide a physics- and physiology-informed framework for predictive and personalized medicine. However, high-fidelity multi-scale and multi-physics cardiac models remain a barrier to adoption due to their high computational cost and the large number of model evaluations required for patient-specific personalization. Artificial intelligence-based methods can enable the creation of fast and accurate whole-heart digital twins. We use Latent Neural Ordinary Differential Equations (LNODEs) to learn the temporal pressure-volume dynamics of a heart failure patient. Our LNODE-based surrogate model is trained from 400 3D-0D whole-heart closed-loop electromechanical simulations, taking into account 43 model parameters describing cell-to-organ scale cardiac electromechanics and cardiovascular hemodynamics. The trained system of LNODEs provides a compact and efficient representation of the 3D-0D model in a latent space using a feed-forward fully connected artificial neural network that retains 3 hidden layers with 13 neurons per layer, enabling faster than real-time numerical simulations of cardiac function on a single processor. This surrogate model is employed to perform global sensitivity analysis and robust parameter estimation with uncertainty quantification in time frames compatible with clinical practice, still using a single processor. This framework introduces several computational tools for digital twinning in computational cardiology.
-------------------
FOLLOW US
SEMINAR ROOMS
ABOUT
The Isaac Newton Institute is a national and international visitor research institute. It runs research programmes on selected themes in mathematics and the mathematical sciences with applications over a wide range of science and technology. It attracts leading mathematical scientists from the UK and overseas to interact in research over an extended period.