Guillaume Dardenne

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In this paper, we present a novel approach for tracking a deformable anatomical target within 3D ultrasound volumes. Our method is able to estimate deformations caused by the physiological motions of the patient. The displacements of moving structures are estimated from an intensity-based approach combined with a physically-based model and has therefore the(More)
This paper describes a fast procedure for the calibration of an ultrasound (US) probe using a 3D optical localizer. This calibration step allows us to obtain the 3D position of any point located on the 2D ultrasonic (US) image. To carry out correctly this procedure , a phantom of known geometric properties is probed and these geometries are found in the US(More)
Three-dimensional freehand ultrasound has found several clinical applications, such as in Computer Assisted Orthopaedic Surgery CAOS. Since the last decade, the US applications in CAOS allow the surgeon to objectively plan out critical surgical variables, and would result in improved surgical outcomes. A key step of all the freehand ultrasound imaging(More)
In several medical applications such as liver or kidney biopsies, an anatomical region needs to be continuously tracked during the intervention. In this paper, we propose a novel approach for automatically tracking deformable target within 2D ultrasound images. Our approach uses only dense information combined with a physically-based model and has therefore(More)
In this paper, we present a real-time approach that allows tracking deformable structures in 3D ultrasound sequences. Our method consists in obtaining the target displacements by combining robust dense motion estimation and mechanical model simulation. We perform evaluation of our method through simulated data, phantom data, and real-data. Results(More)
Non-unions of greater trochanter (GT) fractures or osteotomies are the source of frequent complications. Two muscles are involved in the genesis of such non-unions, the gluteus medius and the gluteus minimus. Literature says that, during hip flexion, their terminal insertions on the faces of the GT generate an anterior translation of the GT responsible for(More)
L'auteur reprend, à la faveur d'observations personnelles, le problème de l'HIC qui complique parfois certaines affections qui s'accompagnent généralement d'une contamination chimique ou cellulaire du LCR (polyradiculonévrite de G. B., tumeurs intrarachidiennes basses, neurinomes de l'acoustique au début de leur évolution, hémorragies sous-arachnoïdiennes).(More)
Two cases of calvarium sarcoma with intracranial extension, consecutive to Paget disease of the skull are presented. The neurosurgical implications of this rare complication of a common disease are reviewed. In both cases, the symptoms of malignant degeneration were unspecific and blurred by the presence of a well-known Paget disease. Increasing headaches,(More)