# US 12,594,041 B2 · Information processing system, information processing method, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,041 B2 - Document ID: US12594041B2 - Status: Granted - Kind: B2 - Application number: 18/571,506 - Filed: 2022-06-23 - Published: 2024-08-22 - Granted: 2026-04-07 - Earliest claimed: 2021-06-24 - Assignees: The University of Tokyo - Applicants: The University of Tokyo - Inventors: Taichi Kin; Toki Saito; Tatsuya Uchida; Katsuya Sato; Hiroshi Oyama; Nobuhito Saito - Web page: https://patentgrep.com/patent/US12594041B2 ## CPC - A61B 6/03: Computed tomography [CT] - A61B 6/032: {Transmission computed tomography [CT]} - G06T 7/0014: {using an image reference approach} - G06T 15/08: Volume rendering - G06T 17/10: Constructive solid geometry [CSG] using solid primitives, e.g. cylinders, cubes - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract An information processing system is provided. The information processing system comprises at least one processor configured to execute a program so that each following step is executed. In a reconstruction step, a first volume data is reconstructed, the first volume data indicating at least a part of the subject based on a plurality of first serial tomographic images of the subject. The first volume data includes first contour data representing an exterior of the subject and internal data including the inside of the subject. In a conversion step, the first volume data is converted to second volume data based on reference contour data other than the first contour data, the second volume data includes a second contour data different from the first contour data and the internal data including the inside of the body of the subject including the first contour data and the internal data including the inside of the body of the subject. ## Claims ### Claim 1 An information processing system, comprising a processor configured to execute a program so as to: in a reconstruction step, reconstruct a first volume data indicating at least a part of the subject based on a plurality of first serial tomographic images of the subject, wherein the first volume data includes first contour data representing an exterior of the subject and internal data including the inside of the subject; and in a conversion step, convert the first volume data to second volume data based on reference contour data other than the first contour data, wherein the second volume data includes a second contour data different from the first contour data and the internal data including the inside of the body of the subject including the first contour data and the internal data including the inside of the body of the subject. ### Claim 2 (depends on 1) The information processing system according to claim 1, wherein the processor is further configured to execute the program so as to: in an imaging step, generate a plurality of second serial tomographic images from the second volume data. ### Claim 3 (depends on 2) The information processing system according to claim 2, wherein the processor is further configured to execute the program so as to: in a reception step, receive the first serial tomographic images; and in a transmission step, transmit at least a part of the second serial tomographic images to an external device. ### Claim 4 (depends on 1) The information processing system according to claim 1, wherein: the volume data includes intermediate data indicating a region between the contour data and the internal data, and the processor is further configured to execute the program so as to, in a correction step, execute the correction to stretch or shrink the intermediate data to fit the second contour data. ### Claim 5 (depends on 4) The information processing system according to claim 4, wherein: the intermediate data includes intermediate tissues including at least one of subcutaneous tissue, muscle, fat and blood vessels. ### Claim 6 (depends on 1) The information processing system according to claim 1, wherein: the reference contour data is calculated by at least one of contour data of a person different from the subject, contour data of a fictitious person, or pre-processed contour data of the subject. ### Claim 7 (depends on 6) The information processing system according to claim 6, wherein: the reference contour data is calculated by averaging the contour data of a plurality of persons. ### Claim 8 (depends on 1) The information processing system according to claim 1, wherein: the reference contour data is determined by at least one of age, gender or race. ### Claim 9 (depends on 1) The information processing system according to claim 1, wherein the processor is further configured to execute the program so as to: in a registration step, register the first volume data and a reference volume data with the reference contour data; in a setting step, set a landmark for the first volume data and the reference volume data registered with each other; and in the conversion step, convert the first volume data to the second volume data with the second contour data based on the landmark. ### Claim 10 (depends on 1) The information processing system according to claim 1, wherein: the reference contour data is the second contour data; and the second contour data is obtained by deforming at least a part of the first contour data based on preset reference information. ### Claim 11 (depends on 1) The information processing system according to claim 1, wherein: the first contour data is data representing a body surface of the subject; and the internal data is data representing a bone and a region medial to the bone of the subject. ### Claim 12 (depends on 1) An information processing method, comprising each step in the information processing system according to claim 1. ### Claim 13 (depends on 1) A non-transitory computer-readable memory medium storing a program, configured to allow a computer to execute each step in the information processing system according to claim 1.