Abstract: A system for assisting guiding an endovascular instrument in vascular structures of an anatomical region of interest of a patient. This system includes an imaging device for capturing three-dimensional images of parts of the body of a patient, a programmable device and a viewing unit. The imaging device captures partially superposed fluoroscopic images of the region, and the programmable device forms a first augmented image, representative of a complete panorama of bones of the region, and cooperates with the imaging device to obtain a second augmented image including a representation of the vascular structures of the region. The imaging device captures a current fluoroscopic image of a part of the region, and the programmable device registers the current fluoroscopic image with respect to the first augmented image and locates and displays, on the viewing unit, an image region corresponding to the current fluoroscopic image in the second augmented image.

Abstract: A method and a system are provided for helping to guide an endovascular tool in vascular structures. The method includes an initial planning phase in which a first three-dimensional anatomical model specific to the patient is determined from an acquired three-dimensional image, and an intervention phase in which a final transformation, which is a combination of a rigid transformation and of an elastic transformation, is applied to the first three-dimensional anatomical model specific to the patient in order to obtain a second three-dimensional model specific to the patient. The rigid transformation is estimated between the preoperative three-dimensional image and one or more perioperative two-dimensional images of perioperative two-dimensional images, and the elastic transformation is calculated as a function of a simulation of vascular deformations that are induced by introducing the tool into the target vascular structure.

Abstract: A system for assisting guiding an endovascular instrument in vascular structures of an anatomical region of interest of a patient. This system includes an imaging device for capturing three-dimensional images of parts of the body of a patient, a programmable device and a viewing unit. The imaging device captures partially superposed fluoroscopic images of the region, and the programmable device forms a first augmented image, representative of a complete panorama of bones of the region, and cooperates with the imaging device to obtain a second augmented image including a representation of the vascular structures of the region. The imaging device captures a current fluoroscopic image of a part of the region, and the programmable device registers the current fluoroscopic image with respect to the first augmented image and locates and displays, on the viewing unit, an image region corresponding to the current fluoroscopic image in the second augmented image.

Abstract: A method and a system are provided for helping to guide an endovascular tool in vascular structures. The method includes an initial planning phase in which a first three-dimensional anatomical model specific to the patient is determined from an acquired three-dimensional image, and an intervention phase in which a final transformation, which is a combination of a rigid transformation and of an elastic transformation, is applied to the first three-dimensional anatomical model specific to the patient in order to obtain a second three-dimensional model specific to the patient. The rigid transformation is estimated between the preoperative three-dimensional image and one or more perioperative two-dimensional images of perioperative two-dimensional images, and the elastic transformation is calculated as a function of a simulation of vascular deformations that are induced by introducing the tool into the target vascular structure.