Method for detecting displacements of the brain areas and the representation thereof on a display, said displacements caused by tumour formation

r−2 The invention relates to a method of detecting the displacement of individual brain areas and to the presentation thereof on a display for guaranteeing optimal planning of an operation, said displacements being caused by tumor formation. According to the invention a displacement vector is detected for each brain area which was situated at a defined location in the initial position where a tumor is located now. Said displacement vector defines the displacement of a brain area in the direction and the amount thereof, whereby said displacement is caused by tumor growth. Said vector is detected by means of two parameters (b and c) which can be derived from the size and the kind of the tumor. The displacement vectors are numerically calculated according to the formula u=cr+brafter the two parameters have been detected. The image of the tumor as well as the detected displacements are subsequently inserted into a stereotactic atlas. The brain areas are displayed at the actual locations in the thus obtained image. Improved planning for carrying out operations can thus be guaranteed by means of said representation.