Preoperative functional MRI as noninvasive method of mapping of the brain cortex at gliomas which amaze functionally significant zones

Results of tool inspection of 36 patients with glial tumours of a different degree of malignancy which were localized nearby or directly in sensorimotor area of a cortex of a brain, by means of techniques MRI, MR-venography and functional MRI are analysed. Use of the given techniques has allowed to spend mapping cortex of hemispheres of a brain with visualization of local areas of activation and their extrapolation on corresponding anatomic structures of a brain, has enabled to determine a degree of risk of occurrence of neurologic deficiency already on preoperation a stage, promoted optimization of medical tactics and minimization of undesirable consequences of surgical intervention, increase of safety.