# US 12,109,059 B2 · Dynamic analysis system, correction apparatus, storage medium, and dynamic imaging apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,059 B2 - Document ID: US12109059B2 - Status: Granted - Kind: B2 - Application number: 17/318,278 - Filed: 2021-05-12 - Published: 2021-11-25 - Granted: 2024-10-08 - Earliest claimed: 2020-05-19 - Assignees: Konica Minolta, Inc. - Applicants: Konica Minolta, Inc. - Inventors: Sumiya Nagatsuka; Yuki Kawana - Web page: https://patentgrep.com/patent/US12109059B2 ## CPC - A61B 6/48: {Diagnostic techniques (A61B6/022, A61B6/025 A61B6/032, A61B6/037 take precedence)} - A61B 6/0492: {using markers or indicia for aiding patient positioning} - A61B 6/08: Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams - A61B 6/463: {characterised by displaying multiple images or images and diagnostic data on one display} - A61B 6/486: {involving generating temporal series of image data} - A61B 6/505: {for diagnosis of bone} - A61B 6/5211: {involving processing of medical diagnostic data} - A61B 6/5264: {due to motion} - G06T 3/40: Scaling of whole images or parts thereof, e.g. expanding or contracting - G06T 7/62: of area, perimeter, diameter or volume - A61B 6/0407: {Supports, e.g. tables or beds, for the body or parts of the body} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract A dynamic analysis system processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector. The dynamic analysis system includes a hardware processor that performs position correction of the dynamic image by eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane. ## Claims ### Claim 1 A dynamic analysis system that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, comprising: a hardware processor that recognizes a specific region in which the subject is captured in each of the frames constituting the dynamic image, measures a size of the specific region that has been recognized in the each of the frames, and performs position correction on at least one frame of the dynamic image to ensure that a size of the specific region of the subject in the at least one frame and a size of the specific region of the subject in a reference frame of the dynamic image are within a predetermined range, thereby eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane. ### Claim 2 (depends on 1) The dynamic analysis system according to claim 1, wherein the hardware processor enlarges or reduces an image captured in the at least one frame based on the size of the specific region that has been measured, thereby making a size of the specific region in the one of the frames get to within the predetermined range of the a size of the specific region in the reference frame. ### Claim 3 (depends on 1) The dynamic analysis system according to claim 1, wherein the radiation irradiation apparatus has a radiation source that moves in a direction perpendicular to the detector plane, and wherein the hardware processor moves the radiation source, while the subject is imaged, to a first position that is separated from the detector plane by a first distance in a direction perpendicular to the detector plane and to a second position that is separated from the detector plane by a second distance in a direction perpendicular to the detector plane, the second distance being longer than the first distance, recognizes the specific region in which the subject is captured in respective frames constituting the dynamic image, generates an interpolation frame by determining an outline of the specific region for a source-to-image distance set to infinity, based on the specific region in a frame generated when the radiation source is in the first position and the specific region in a frame generated when the radiation source is in the second position, and replaces a frame of the dynamic image that is generated when the radiation source is at the second position with the interpolation frame. ### Claim 4 (depends on 1) The dynamic analysis system according to claim 1, further comprising: a storage that stores the dynamic image corrected by the position correction performed by the hardware processor. ### Claim 5 (depends on 1) The dynamic analysis system according to claim 1, further comprising: a display that displays the dynamic image corrected by the position correction performed by the hardware processor. ### Claim 6 (depends on 1) The dynamic analysis system according to claim 1, wherein the subject is a mark that is attached to a specific part or a vicinity of the specific part. ### Claim 7 (depends on 3) The dynamic analysis system according to claim 3, further comprising: an optical camera that monitors whether or not the subject is displaced in a direction perpendicular to the detector plane, wherein, when the optical camera detected that the subject is displaced in the direction perpendicular to the detector plane, the hardware processor moves the radiation source to the second position. ### Claim 8 (depends on 6) The dynamic analysis system according to claim 6, wherein the specific part is a joint. ### Claim 9 A non-transitory computer-readable storage medium storing a program causing a hardware processor of a correction apparatus that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, to: recognize a specific region in which the subject is captured in each of the frames constituting the dynamic image, measure a size of the specific region that has been recognized in the each of the frames, and perform position correction on at least one frame of the dynamic image to ensure that a size of the specific region of the subject in the at least one frame and a size of the specific region of the subject in a reference frame of the dynamic image are within a predetermined range, thereby eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane. ### Claim 10 A dynamic analysis system that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, comprising: a hardware processor that performs position correction of the dynamic image by eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane, wherein the radiation irradiation apparatus has a radiation source that moves in a direction perpendicular to the detector plane, and wherein the hardware processor moves the radiation source, while the subject is imaged, to a first position that is separated from the detector plane by a first distance in a direction perpendicular to the detector plane and to a second position that is separated from the detector plane by a second distance in a direction perpendicular to the detector plane, the second distance being longer than the first distance, recognizes a specific region in which the subject is captured in respective frames constituting the dynamic image, generates an interpolation frame by determining an outline of the specific region for a source-to-image distance set to infinity, based on the specific region in a frame generated when the radiation source is in the first position and the specific region in a frame generated when the radiation source is in the second position, and replaces a frame of the dynamic image that is generated when the radiation source is at the second position with the interpolation frame. ### Claim 11 (depends on 10) The dynamic analysis system according to claim 10, further comprising: an optical camera that monitors whether or not the subject is displaced in a direction perpendicular to the detector plane, wherein, when the optical camera detected that the subject is displaced in the direction perpendicular to the detector plane, the hardware processor moves the radiation source to the second position.