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Abstract
Preservation of vital cerebral tissue while maximizing tumor resection is a principal goal in surgical neuro-oncology. Consequently, knowledge of the relationship between tumor and eloquent cortical and white matter regions might be helpful for preoperatively determining the extent to which a brain tumor can be surgically removed, and also for guiding the actual surgical procedure. Diffusion-tensor magnetic resonance imaging (DTI) and fiber tractography are new methods that can demonstrate the orientation and integrity of white matter fibers in vivo and is considered a powerful method for characterizing changes in tissue microstructure associated with different brain disorders