Aim:

It is intended to be revealed the relationship between tumor and adjacent white matter tract preopera-tively by Diffusion Tensor Imaging (DTI), with evaluation of pathology results, clinical examination results and preoperative DTI characteristic of surgery performed brain tumor patiens.

Materials-Methods:

In this study, 54 leison sided white matter tract and 54 contralateral white matter he-mispheric controls belongs to 26 patient was examined and Fractional Anisotropy (FA) measurement was perfomed. White matter tracts was categorized as edema, displacement, infiltration and disruption with using directionally encoded color maps. FA changes (∆FA%) between categorized groups was compared by statis-tically. Patients that have displaced and edematous white matter tract and also gone surgery were assessed clinically after surgery.

Results:

A significant FA% was found in edema, disruption and infiltration groups. Both edema FA and dis-ruption FA are significantly less than displacement FA. FA% less than −30% is likely to be associated with disruption and infiltration. A positive FA% is likely to be associated with edema or displacement. The pa-tients in edema and displacement groups has not developed additional postoperative neurologic deficits.

Conclusion:

In patienst with brain tumor aimed to assess the relationship of mass and adjacent white matter tracts with preoperative diffusion tensor imaging and reached the conclusion that it is possible to effectively surgical planning with preoperative DTI.

Keywords: Brain Tumour, Diffusion Tensor Imaging, Fractional Anisotropy