In the case of epileptic patients undergoing temporal lobe surgery, it is noted that these individuals usually present a decline in their cognitive functions associated with the affected structures in which there was a section. Examples of such losses are short-term and long-term memories, motor functions, and other functions controlled at the resected sites during surgeries. The investigation proceed in an appropriate way to quantify the losses of the tracts using the Slicer3D software and the available tools, through the software evaluation methods in the DTIs (diffusion detector images) with the methods of tractrography. The final context shows that this method of quantification may be able to identify and correlate the loss of the tracts with the decline in patients' cognitive tasks, such as memory loss after temporal lobe epilepsy surgery.