Jean François Le Bas

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Ablative functional neurosurgery constituted during the first half of the 20th century the main treatment of advanced forms of Parkinson's disease. The surgical procedure was spectacularly efficient on tremor, but sometimes complications were not totally regressive and even more severe when surgery was bilateral, this leading to neurocognitive deficits or(More)
BACKGROUND Improvement of surgical accuracy during DBS-lead implantation has been described recently, leading to "frameless" or "MRI-verified" techniques. However, combining a high-quality definition of the STN using intraoperative 1.5 MRI with the possibility to reduce errors due to co-registration and to monitor lead progression during surgical insertion(More)
PURPOSE To present the imaging and perfusion data obtained in nine patients with pilocytic astrocytomas (PA) and to discuss the original functional issues of this technique. METHOD Nine patients with pathologically proven PA underwent conventional and perfusion MR imaging. Various areas of relative cerebral blood volume (rCBV) within the tumors were(More)
The authors have applied magnetic resonance imaging (MRI) to the anatomic study of the liver by comparing cadaveric sections with those obtained with MRI. This study deals with sections oblique in relation to a sagittal or frontal plane, whose orientation is determined from landmarks visible on transverse sections. Oblique sections were made in 10 cadavers(More)
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