vous etes ici Home page > Research > Brain Image Processing

Articles

  • Transcranial Magnetic Stimulation - June 2011

    Transcranial Magnetic Stimulation is a new technique for brain stimulation. As another techniques like ElectroConvulsive Therapy (ECT) or the implantation of electrodes into motor cortex, TMS excites neurones. But contrary to those techniques, TMS is painless and noninvasive. Indeed, neurones are excited by electrical current induced by a rapidly changing magnetic field. This field is created by the discharge of thyristor (during about 300 μs) into a coil i.e a copper winding surrounded by a water-cooled system. The current circulating through the coil is about 10000 A in order to allow magnetic field to cross the skull of the patient.
  • Topology correction of brain surfaces - June 2011

    We propose a combined, voxel and surface based, topology correction method which preserves the structure of the brain while yielding genus zero surfaces.
  • Topographic Analysis of Electrode Contacts in Human Cortical Stimulation - June 2011

    We proposed a new automatic tool for topographic analysis able to compute 2D maps from the 3D anatomic MRI with bijective transformation (point-to- point correspondance).
  • Comparison of Segmentation Methods - October 2006

    We begin in 2006 a bilateral Norway/France collaboration (Univ. of Bergen, Pr. Arvid Lundervold), conerning the evaluation of segmentation methods.
  • Brain Image Segmentation - October 2006

    The ability of precisely quantifying cerebral tissue volumes in various diseases (Alzheimer, hydrocephaly...) must make it possible to largely improve the diagnosis, the treatment and the general understanding of pathologies. We proposed in 2000 a unsupervised fuzzy classification scheme for brain tissue segmentation.