The invention relates to a medical data processing method for determining a vulnerability field of a brain of a patient, the steps of the method being constituted to be executed by a computer and comprising: a) acquiring a nerve-indicating dataset comprising information about the brain of the patient suitable for identifying neural fibers in the brain of the patient； b) determining nodes within the brain preferably being neuron-rich grey matter parts of the brain； c) determining the axonal linkage of the nodes based on the nerve-indicating dataset to obtain edges connecting the nodes, the nodes and edges constituting a connectivity graph； d) determining a weight for each of the edges depending on centrality graph theoretical statistical measure of the respective edge in the connectivity graph； e) determining, for each of the edges, which voxels in a dataset of the brain of the patient belong to the edges or are passed by the edges and assigning or adding the determined weight of the respective edges to all of the voxels belonging to the respective edge to obtain a weighted voxel-based dataset of the brain of the patient defining the vulnerability field of the brain.
