• The Effect of Local Fiber Model On Population Studies 

      Malcolm, James G.; Kubicki, Marek; Shenton, Martha E.; Rathi, Yogesh (Georgia Institute of Technology, 2009-09-24)
      Diffusion tensor imaging has made it possible to evaluate the organization and coherence of white matter fiber tracts. Hence, it has been used in many population studies, most notably, to find abnormalities in schizophrenia. ...
    • Filtered Tractography: State estimation in a constrained subspace 

      Malcolm, James G.; Shenton, Martha E.; Rathi, Yogesh (Georgia Institute of Technology, 2009-09-24)
      We describe amethod of deterministic tractography using model-based estimation that remains constrained to the subspace of valid tensor mixture models. Existing techniques estimate the local fiber orientation at each ...
    • Filtered Tractography: Validation on a Physical Phantom 

      Malcolm, James G.; Shenton, Martha E.; Rathi, Yogesh (Georgia Institute of Technology, 2009-09-24)
      This note summarizes a technique that uses tractography to drive the local fiber model estimation. Existing techniques use independent estimation at each voxel so there is no running knowledge of confidence in the estimated ...
    • Neural Tractography Using An Unscented Kalman Filter 

      Malcolm, James G.; Shenton, Martha E.; Rathi, Yogesh (Georgia Institute of Technology, 2009)
      We describe a technique to simultaneously estimate a local neural fiber model and trace out its path. Existing techniques estimate the local fiber orientation at each voxel independently so there is no running knowledge ...