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- Tractography abstract "In neuroscience, tractography is a 3D modeling technique used to visually represent neural tracts using data collected by diffusion tensor imaging (DTI). It uses special techniques of magnetic resonance imaging (MRI), and computer-based image analysis. The results are presented in two- and three-dimensional images.In addition to the long tracts that connect the brain to the rest of the body, there are complicated neural networks formed by short connections among different cortical and subcortical regions. The existence of these bundles has been revealed by histochemistry and biological techniques on post-mortem specimens. Brain tracts are not identifiable by direct exam, CT, or MRI scans. This difficulty explains the paucity of their description in neuroanatomy atlases and the poor understanding of their functions.The MRI sequences used look at the symmetry of brain water diffusion. Bundles of fiber tracts make the water diffuse asymmetrically in a tensor, the major axis parallel to the direction of the fibers. The asymmetry here is called anisotropy. There is a direct relationship between the number of fibers and the degree of anisotropy.600 pxFigure legend:Diffusion tensor imaging (DTI) data have been used to seed various tractographic assessments of this patient's brain. These are seen in superior (A), posterior (B), and lateral views (C&D). The seeds have been used to develop arcuate and superior longitudinal fasciculi in (A) and (B), for brainstem, and corona radiata in (C), and as combined data sets in (D). Some of the two dimensional projections of the tractographic result are also shown. The data set may be rotated continuously into various planes to better appreciate the structure. Color has been assigned based on the dominant direction of the fibers. There is asymmetry in the tractographic fiber volume between the right and left arcuate fasciculus (Raf & Laf) (smaller on the left) and between the right and left superior longitudinal fasciculus (Rslf & Lslf) (smaller on the right). Also seen are Tapetum (Ta), Left corona radiata (Lcr) and Left middle cerebellar peduncle (Lmcp).".
- Tractography thumbnail MRI_T2_Brain_axial_image.jpg?width=300.
- Tractography wikiPageExternalLink dipy.org.
- Tractography wikiPageExternalLink trackvis.org.
- Tractography wikiPageExternalLink index.php.
- Tractography wikiPageExternalLink fibertracking-and-functional-software.
- Tractography wikiPageExternalLink DiffusionImaging.
- Tractography wikiPageExternalLink www.slicer.org.
- Tractography wikiPageExternalLink improved-analysis-brain-connectivity-using-high-angular-resolution-diffusion-imaging.
- Tractography wikiPageID "631721".
- Tractography wikiPageRevisionID "598049542".
- Tractography hasPhotoCollection Tractography.
- Tractography subject Category:Magnetic_resonance_imaging.
- Tractography comment "In neuroscience, tractography is a 3D modeling technique used to visually represent neural tracts using data collected by diffusion tensor imaging (DTI). It uses special techniques of magnetic resonance imaging (MRI), and computer-based image analysis.".
- Tractography label "Tractografie".
- Tractography label "Tractografía".
- Tractography label "Tractographie".
- Tractography label "Tractography".
- Tractography label "Traktografia".
- Tractography label "Trattografia".
- Tractography sameAs Tractografía.
- Tractography sameAs Tractographie.
- Tractography sameAs Trattografia.
- Tractography sameAs Tractografie.
- Tractography sameAs Traktografia.
- Tractography sameAs m.02yq94.
- Tractography sameAs Q3076659.
- Tractography sameAs Q3076659.
- Tractography wasDerivedFrom Tractography?oldid=598049542.
- Tractography depiction MRI_T2_Brain_axial_image.jpg.
- Tractography isPrimaryTopicOf Tractography.