A computer-implemented method for reconstructing a geometry of the mitral valve of a subject, based on a sequence of echography images acquired from the subject, the sequence of echography images representing the mitral valve apparatus during at least one heart cycle, the method comprising the steps: - generating a mesh of the open mitral valve (Mo) based on a subset of open instance images (So) in the sequence of echography images, and; - generating a mesh of the closed mitral valve (Mc) based on a subset of closed instance images (Sc) in the sequence of echography images; - identifying a position of papillary muscle tips of the subject in the subset of open instance images (So) and a position of the papillary muscle tips in the subset of closed instance images (Sc); - for at least one predefined zone of each leaflet of the mitral valve, determining a corresponding open position in the mesh of the open mitral valve (Mo), and a corresponding closed position in the mesh of the closed mitral valve (Mc); - deriving a first chordae geometry, based on the identified position of the papillary muscle tips in the subset of closed instance images (Sc) and on the determined closed position of each predefined zone; - deforming the first chordae geometry using finite element simulation, by applying as boundary conditions a displacement of chordae extremities from a closed valve configuration to an open valve configuration or by using a mesh deformation technique, and based on a result of comparing: • the identified positions of the papillary muscle tips in the subset of open instance images (So) and in the subset of closed instance images (Sc); and • for each predefined zone, the corresponding determined open position and closed position, wherein during the finite element simulation, chordae lengths are kept constant so as to obtain a deformed chordae geometry. - generating a mesh of the open mitral valve (Mo) based on a subset of open instance images (So) in the sequence of echography images, and; - generating a mesh of the closed mitral valve (Mc) based on a subset of closed instance images (Sc) in the sequence of echography images; - identifying a position of papillary muscle tips of the subject in the subset of open instance images (So) and a position of the papillary muscle tips in the subset of closed instance images (Sc); - for at least one predefined zone of each leaflet of the mitral valve, determining a corresponding open position in the mesh of the open mitral valve (Mo), and a corresponding closed position in the mesh of the closed mitral valve (Mc); - deriving a first chordae geometry, based on the identified position of the papillary muscle tips in the subset of closed instance images (Sc) and on the determined closed position of each predefined zone; - deforming the first chordae geometry using finite element simulation, by applying as boundary conditions a displacement of chordae extremities from a closed valve configuration to an open valve configuration or by using a mesh deformation technique, and based on a result of comparing: • the identified positions of the papillary muscle tips in the subset of open instance images (So) and in the subset of closed instance images (Sc); and • for each predefined zone, the corresponding determined open position and closed position, • the identified positions of the papillary muscle tips in the subset of open instance images (So) and in the subset of closed instance images (Sc); and • for each predefined zone, the corresponding determined open position and closed position, wherein during the finite element simulation, chordae lengths are kept constant so as to obtain a deformed chordae geometry.