Strainger things: discrete differential geometry for transporting right ventricular deformation across meshes - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Strainger things: discrete differential geometry for transporting right ventricular deformation across meshes

Résumé

Cardiac dynamics have been a focus of image analysis, and their statistical models are used in a wide range of applications: generating synthetic datasets, derivation of specific biomarkers of pathologies, or atlas-based motion estimation. Current representations of dynamics, mainly based on displacements, often overlook the physiological basis of cardiac contraction. We propose to use local strain as a more accurate representation, and demonstrate this on 3D echocardiography surface meshes of the right ventricle. Our methodology, based on a differential geometry algorithm, deforms the surface mesh according to a pre-imposed strain field. This approach allows for a clearer disentanglement between cardiac geometry and dynamics, better differentiating deformation changes than those due to changes in cardiac morphology. The methodology is demonstrated in two toy examples: transporting deformation from one individual to another; and simulating the effects of a pathology on a healthy patient, namely an akinetic right ventricular outflow tract.
Fichier principal
Vignette du fichier
Bernardino_FIMH_2023.pdf (3.89 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04096720 , version 1 (13-05-2023)

Licence

Paternité

Identifiants

  • HAL Id : hal-04096720 , version 1

Citer

Gabriel Bernardino, Thomas Dargent, Oscar Camara, Nicolas Duchateau. Strainger things: discrete differential geometry for transporting right ventricular deformation across meshes. 12th International Conference on Functional Imaging and Modeling of the Heart, Jun 2023, Lyon, France. pp.338-346. ⟨hal-04096720⟩
28 Consultations
29 Téléchargements

Partager

Gmail Facebook X LinkedIn More