APPLICATION OF DIFFERENT NEURONAVIGATION METHODS IN BRAIN TUMOR SURGERY AND THE ADVANTAGE OF ULTRASOUND NAVIGATION.

Having considered all methods of neuronavigation in intraoperative conditions in the treatment of brain tumors in the historical aspect and at the present stage. The possibilities of stereotactic frame and frameless systems, intraoperative MRI and CT, and intraoperative ultrasonography are described. The advantages and disadvantages of each neuronavigation method are highlighted. With intraoperative neurosonography, valuable real-time information can be obtained through proper orientation and instantaneous correlation between sonograms and familiar preoperative MRI images and this method is the most accessible simple yet valuable method of neuronavigation. Due to these qualities, the method can become an alternative to more expensive and complex stereotactic, intraoperative MRI and CT methods of neuronavigation.