Gaëtan Desrues

Research Engineer

I build digital twins of the heart: models that reproduce a patient's heart from clinical examinations, and on which one can experiment freely. In the clinic as in research or industry, their usefulness comes down to two things, fidelity and speed. That is what I work on, somewhere between physics, machine learning and computing.

Research

  1. Personalisation & validation

    Identifiable twins

    Estimating the parameters of an electromechanical model from a cine MRI and an ECG, with calibrated uncertainty: knowing what each examination reveals and what it leaves undetermined. The whole pipeline follows verification, validation and uncertainty quantification.

  2. Multi-modal data

    Cohorts of virtual patients

    Simulating patients once, then rendering them as cine MRI, echocardiography, CT and ECG with generative models constrained by physics. Data that is consistent across modalities, with known ground truth and privacy-safe, to train and validate AI.

  3. Latent dynamics

    Geometry of motion

    Describing the motion of the heart with a few regional transformations, learning the space of these motions and its geometry, then giving it physical dynamics. The same formalism summarises motion for inference and animates it for rendering.

Projects

2025 –

Electromechanical models and heart failure

3D electromechanical models of the heart, to understand cardiac function and help plan treatment for heart failure patients. Built with SOFA and run on Inria's national computing infrastructure.

2025 – 2026

Planning transcatheter mitral valve repair

A patient-specific preoperative planning tool for transcatheter mitral valve repair.

2020 – 2023

A digital twin for cardiac resynchronisation

PhD with MicroPort CRM. A 3D model personalised from an ECG and an echocardiogram, fitted in under a second with machine learning, and compared with measurements from 91 patients to predict the response to CRT. The simulated left pre-ejection interval (LPEI) emerges as the best indicator of response.

the thesis on HAL (new tab)
2019

Reduced cardiac models

A reduced finite element model based on poly-affine transformations, to speed up electromechanical simulation.

STACOM 2019 paper (new tab)

Publications

  1. 2023
  2. 2021
    Personal-by-design: a 3D Electromechanical Model of the Heart Tailored for Personalisation
    G. Desrues, D. Feuerstein, T. Legay, S. Cazeau, M. Sermesant
    conference Functional Imaging and Modeling of the Heart (FIMH), Stanford
  3. 2019
    Towards Hyper-Reduction of Cardiac Models using Poly-Affine Deformation
    G. Desrues, H. Delingette, M. Sermesant
    conference Statistical Atlases and Computational Models of the Heart (STACOM), Shenzhen

Background

  1. 2025 –

    Research Engineer, Inria

    Electromechanical digital twins of the heart; mitral repair planning until 2026.

  2. 2023 – 2025

    Independent engineer

    Numerical simulation, AI and training.

  3. 2020 – 2023

    PhD, Inria (Epione team) and MicroPort CRM

    Université Côte d'Azur, supervised by Maxime Sermesant. Involved in the SimCardioTest European project.

  4. 2019

    Research internship, Inria (Epione team)

    Reduced finite element heart model based on poly-affine deformation, using SOFA in Python and C++.

  5. 2019

    Research project, Inria Bordeaux (Monc team)

    Convolutional neural networks to detect soft tissue sarcoma in MRI scans.

  6. 2016 – 2019

    ENSEIRB-MATMECA and University of Bordeaux

    Mathematical modelling, fluid mechanics and high performance computing.

  7. 2014 – 2016

    Preparatory classes PCSI-PSI

    Lycée Bellevue, Toulouse.

Talks

  1. 2022

    SophIA Summit

    Digital twins of the heart: from imaging to personalised simulation.

Teaching

  1. 2025 –

    Supervision of MSc projects, Polytech Nice

    Applied mathematics, computational engineering.

  2. 2020

    Teaching assistant, Nice University

    Linear equations, master's level.

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