148 research outputs found
Lower parietal glucose metabolism in anorexia nervosa assessed by positron emission tomography.
No full textLegacy description not available</p
ECAT III - A new PET system for heart and whole body dynamic imaging.
No full textLegacy description not available</p
Validation of the GATE Monte Carlo tool for modeling artifacts in PET imaging.
No full textLegacy description not available</p
Localisation spatio-temporelle d'EEG ictale avec 3D-fusion d'imagerie fonctionnelle et morphologique.
No full textLegacy description not available</p
Model-based multi-constrained integration of invasive electrophysiology with other modalities
No full textFollowing recent developments, most brain imaging modalities (MR, CT, SPECT, PET) can nowadays be registered and integrated in a manner almost simple enough for routine use. By design though, these modalities are still not able to match the principles and near real-time capabilities of the much simpler (but of lower spatial resolution) EEG, thus the need to integrate it as well, along with - for some patients - the more accurate invasive electrophysiology measurements taken directly in contact with brain structures. A standard control CT (or MR) is routinely performed after the implantation of invasive electrodes. After registration with the other modalities, the initial estimates of the electrodes' locations extracted from the CT (or MR) are iteratively improved by using a geometrical model of the etectrodes' arrangement (grids, strips, etc.) and other optional constraints (morphology, etc.). Unlike the direct 3D pointing of each electrode in the surgical suite - which can still act as a complementary approach this technique estimates the most likely location of the electrodes during monitoring and can also deal with non critical arrangements (internal strips, depth electrodes, etc.). Although not always applicable to normal volunteers because of its invasive components, this integration further opens the door towards an improved understanding of a very complex biological system.</p
Prospective, rigid, mouse whole-body, inter-modality image registration.
No full textLegacy description not available</p
Multidimensional integration of non-invasive and invasive multisensor measurements for the assessment of brain function.
No full textLegacy description not available</p
Caudate nuclei glucose hypermetabolism in eating disorders.
No full textLegacy description not available</p
- …
