Abstract
Even if the same disease and surgical method, an indication of the navigation surgery will be changed by the reason of the clinical condition of the patient, feature of the lesion, an anatomical individuality, the ability of the surgeon's skill and the experiences. This time, we inspected what kind of scene navigation was required by the different levels of surgeon. Through this experiment, we have an impression that the understanding of the clinical anatomy when we used navigation system together is becoming faster and more precise. Finally, We want to do a new proposal about need and indication of the navigation surgery.
