The present invention relates to a device for predicting an unfolded state of a foldable implant in cardiovascular tissue, the device (2) comprising: a receiving unit (20)； a segmentation module (21)； a search unit (22)； a registration module (23)； and a simulation unit (24)； wherein the receiving unit (20) is configured to receive pre-treatment 3D planning image data and treatment image data, the treatment image data comprising catheter image data, the catheter image data comprising landmark image data； wherein the segmentation module (21) is configured to segment the pre-treatment 3D planning image data resulting in segmented 3D planning image data； wherein the search unit (22) is configured to locate the landmark image data within the treatment image data resulting in a known landmark position and a known landmark orientation； and wherein the registration module (23) is configured to register the segmented 3D planning image data to the treatment image data； wherein the simulation unit (24) is configured to simulate an unfolded state of a foldable implant in cardiovascular tissue based on the known landmark position and the known landmark orientation in the cardiovascular tissue resulting in a simulated unfolded implant positioned in cardiovascular tissue. The present invention provides the knowledge of the unfolded implant in the cardiovascular tissue as well as its interaction with the anatomical placement domain at the current landmark position prior to the real deployment.La présente invention concerne un dispositif de prédiction d'un état déplié d'un implant pliable dans un tissu biologique, le dispositif comprenant : une unité de réception configurée pour recevoir des données d'image de planification 3D de prétraitement et des données d'image de traitement, les données d'image de traitement comprenant des données d'image de cathéter, les données d'image de cathéter comprenant des données d'image de point de repère ； un module de segmentation configuré pour s
