1. A medical image information system comprising: a medical knowledge database in which predetermined anatomic compartments or predetermined functional compartments with respect to one or more organ models are stored; a storage medium storing instructions; a display device; and a processor connected to the storage medium, the display device and the medical knowledge database, wherein the processor, when executing the instructions stored in the storage medium, is configured to: extract an organ region and a tract region in the organ region from an image to be processed which contains an imaged organ, divide the extracted tract region into a plurality of tract nodes linked by a plurality of tract edges to create a tract graph data model, divide the extracted organ region according to the extracted tract region and the tract graph data model into a plurality of organ region compartment nodes linked by a plurality of organ region compartment edges to create an organ region compartment graph data model, acquire an anatomical/functional graph data model which includes a plurality of functional compartment nodes linked by a plurality of functional compartment edges based on the anatomic compartments or the functional compartments of the one of the organ models stored in the medical knowledge database corresponding to the imaged organ, correlate at least one of the tract graph data model and the organ region compartment graph data model with the anatomical/functional graph data model to create an integrated graph data model, and display at least one of the tract graph data model, the organ region compartment data model, and the anatomical/functional data model with the integrated graph data model on the display device.