Method and apparatus for automatic 4d coronary modeling and...

G - Physics – 06 – T

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G06T 7/00 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2619308

A method for computer-aided four-dimensional (4D) modeling of an anatomical object comprises acquiring a set of three-dimensional (3D) models representing a plurality of static states of the object throughout a cycle. A 4D correspondency estimation is performed on the set of 3D models to determine which points of the 3D models most likely correspond to each other, wherein the 4D correspondency estimation includes one or more of (i) defining a reference phase, (ii) performing vessel-oriented correspondency estimation, and (iii) post-processing of 4D motion data. The method further comprises automatic 3D modeling with a front propagation algorithm.

Procédé de modélisation en quatre dimensions (4D) assisté par ordinateur consistant à acquérir des modèles tridimensionnels (3D) qui représentent une pluralité d'états statiques de l'objet sur la totalité d'un cycle. On effectue une estimation de correspondance 4D sur les jeux de modèles 3D afin de déterminer quels points de ces modèles correspondent le plus vraisemblablement les uns aux autres, le processus d'estimation de correspondance 4D englobant au moins une ou plusieurs des opérations suivantes: (i) définition d'une phase de référence; (ii) exécution d'une estimation de correspondance à partir des vaisseaux; et (iii) post-traitement des données de mouvement 4D. Le procédé porte également sur une modélisation 3D automatique avec algorithme de propagation frontale.

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