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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)
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 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)
We report a rare appearance at presentation of meningeal myelomatosis without bone involvement, in the form of an extraaxial mass of mixed density, resembling a chronic subdural haematoma.
The author reports a case of bilateral traumatic carotid-cavernous fistulae successfully treated by cervical carotid surgery alone. The right fistula was presumably cured by the thrombotic process induced by muscle embolization and carotid ligation (Brooks method). The left shunt was selectively obliterated by controlled embolization with preservation of… (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)
A case of arteriovenous anomaly of the left ethmoidal groove, exclusively fed by both ophthalmic arteries and draining into the anterior segment of the superior sagittal sinus through a dilated bridging vein of the prefrontal cortex, is reported. Onset of symptoms was with an acute spontaneous intracerebral hematoma. The relation of this anatomo-clinical… (More)