The present disclosure provides an operation-path recommendation method and apparatus. In the present disclosure, by an operation-path recommendation apparatus, a blood vessel graph model is generated based on patient's anatomical information, a plurality of candidate paths between defined start and destination points is extracted; node information on at least one node in each of the candidate paths is extracted; a cost function is applied to each candidate path, based on the extracted node information.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An operation-path recommendation method, comprising: (a) by an operation-path recommendation apparatus, generating a blood vessel graph model based on patient's anatomical information; (b) by the operation-path recommendation apparatus, extracting a plurality of candidate paths, each path running between defined start and destination points; (c) by the operation-path recommendation apparatus, extracting node information on at least one node in each of the candidate paths; and (d) by the operation-path recommendation apparatus, applying a cost function to each candidate path, based on the extracted node information. 2. The method of claim 1, wherein the (a) comprises: (a1) by the operation-path recommendation apparatus, loading patient's image data thereon; (a2) by the operation-path recommendation apparatus, generating a 3-dimensional (3D) model for the patient's anatomical information, based on the patient's image data; and (a3) by the operation-path recommendation apparatus, generating the blood vessel graph model based on the 3D model. 3. The method of claim 2, wherein the (a3) comprises reflecting, by the operation-path recommendation apparatus, viewpoint information of an imaging device imaging the patient's image data. 4. The method of claim 1, wherein the (b) comprises: by the operation-path recommendation apparatus, defining start and destination points associated with a specified surgical operation; and by the operation-path recommendation apparatus, extracting the plurality of candidate paths on the blood vessel graph model, each path running between the defined start and destination points. 5. The method of claim 1, wherein the node information includes a number and/or type of the at least one node in each candidate path. 6. The method of claim 5, wherein the node information includes a number of jump, branch, and/or cross nodes in each candidate path. 7. The method of claim 6, wherein the jump node is a node where a transfer between an artery and a vein occurs, the branch node is a node where a plurality of blood vessel is directly coupled to one another, and the cross node is a node where one blood vessel is not visible from a viewpoint of a medical imaging device due to overlapping with another blood vessel. 8. The method of claim 1, wherein the (d) comprises: (d1) by the operation-path recommendation apparatus, calculating cost values for the plurality of candidate paths respectively, the calculating reflecting a number and/or type of at least one node in each candidate path; and (d2) by the operation-path recommendation apparatus, specifying a candidate path with the lowest cost value from the plurality of candidate paths. 9. The method of claim 8, wherein the (d) comprises applying a weight factor to a cost value for each candidate path, the weight factor being dependent on a type of a node in each candidate path, the node type including jump, branch, and/or cross nodes. 10. A electronic machine-readable storage medium including a program therein, the program being configured to, when executed by an electronic machine, cause the machine to perform an operation-path recommendation method, the method comprising: by an operation-path recommendation apparatus, generating a blood vessel graph model based on patient's anatomical information; by the operation-path recommendation apparatus, extracting a plurality of candidate paths, each path running between defined start and destination points; by the operation-path recommendation apparatus, extracting node information on at least one node in each of the candidate paths; and by the operation-path recommendation apparatus, applying a cost function to each candidate path, based on the extracted node information. 11. An operation-path recommendation apparatus, comprising: an anatomical information manager configured to manage patient's anatomical information; and an operation path manager, wherein the operation path manager is configured: to generate a blood vessel graph model based on the anatomical information; to extract a plurality of candidate paths between defined start and destination points; to extract node information on at least one node in each of the extracted candidate paths; and to apply a cost function to each candidate path based on the extracted node information. 12. The apparatus of claim 11, wherein the anatomical information manager is further configured to manage image data representing the patient's anatomical information, wherein the operation path manager is further configured to generate a 3D model for the patient's anatomical information based on the patient's image data, and to generate the blood vessel graph model based on the generated 3D model. 13. The apparatus of claim 11, wherein the operation path manager is further configured to define the start and destination points associated with selected specific surgical-operation, and to extract, on the blood vessel graph model, the plurality of candidate paths between the defined start and destination points. 14. The apparatus of claim 11, wherein the operation path manager is further configured to extract a number of and/or a type of at least one node in each of the extracted candidate paths. 15. The apparatus of claim 11, wherein the operation path manager is further configured to calculate cost values corresponding to the candidate paths respectively, using a number of and/or a type of at least one node in each of the extracted candidate paths, and to specify and recommend at least one candidate path with the lowest cost value from among the plurality of candidate paths.