Streamlining the Brain: Methods and Tools for Fibre Tractography

Methods to Improve Fiber Reconstruction at DTI-Based Tractography in the Area of Brain Tumor: Case Illustration and Literature Review

Background and Aim: DTI-based tractography could help us to visualize the spatial relation of fiber tracts to brain lesions. Several factors may interfere with the procedure of diffusion-based tractography, especially in brain tumors. The aim of the current study is to discuss several solutions to improve the procedure of fiber reconstruction adjacent or inside brain lesions. Illustrative cases...

Tractography with multiple fibre directions

Performing fibre tracking in the brain using diffusion tensors is well established but fails in areas where the Gaussian density is a poor approximation of water molecule displacements in a voxel. We describe a new fibre tracking algorithm that uses mixtures of two Gaussian densities in these regions where the Gaussian model is poor. Results show that this algorithm allows tracking to continue ...

Probabilistic Connectivity in Fibre Tractography

INTRODUCTION: During the past decade there has been an increased interest in developing fibre tractography algorithms for the analysis of fibre pathways in the brain. Many approaches have been proposed to model the diffusion signal and to obtain reliable connectivity patterns. Nonetheless, the question of defining probabilistic connectivity indices which capture all the relevant information in ...

the search for the self in becketts theatre: waiting for godot and endgame

this thesis is based upon the works of samuel beckett. one of the greatest writers of contemporary literature. here, i have tried to focus on one of the main themes in becketts works: the search for the real "me" or the real self, which is not only a problem to be solved for beckett man but also for each of us. i have tried to show becketts techniques in approaching this unattainable goal, base...

Brain Structure MR Imaging Methods: Morphometry and Tractography