1. A medical image information system comprising: a medical knowledge database in which anatomic compartments or functional compartments with respect to organs are stored; a storage unit which stores a graph data model; a display unit which displays the graph data model; and a processing unit, wherein the processing unit extracts an organ region and a tract region in the organ from an image to be processed, divides the extracted tract region into a tract node and a tract edge to create a tract graph data model, correlates each region which is obtained by dividing the extracted organ region according to the tract region to the tract graph data model to link between organ region compartment nodes by organ region compartment edge and to create a body part region compartment graph data model, links between functional compartment nodes by functional compartment edges based on the anatomic compartments or the functional compartments of the organ region stored in the medical knowledge database to create an anatomical/functional graph data model, correlates the tract graph data model and/or the organ region compartment graph data model and the anatomical/functional graph data model to create the integrated graph data model, and saves and/or displays the tract graph data model, the organ region compartment data model, the anatomical/functional data model, and/or the integrated graph data model to the storage unit and/or display unit.