# US 10,371,647 B2 · Radiation imaging apparatus and radiation imaging system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,647 B2 - Document ID: US10371647B2 - Status: Granted - Kind: B2 - Application number: 15/165,119 - Filed: 2016-05-26 - Published: 2016-12-22 - Granted: 2019-08-06 - Earliest claimed: 2015-06-22 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Hiroki Asai - Web page: https://patentgrep.com/patent/US10371647B2 ## CPC - G01N 23/04: and forming images of the material - G01N 2223/401: image processing - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract Provided is a radiation imaging apparatus, including: an information outputting unit configured to output state information on a state of the radiation imaging apparatus; a correction data acquiring unit configured to acquire offset correction data through use of image data acquired in an acquisition mode that is set based on the state information; and an image processing unit configured to correct image data acquired by imaging an object through use the offset correction data. ## Claims ### Claim 1 A radiation imaging apparatus comprising a processor coupled to a storage medium programmed to function as: a mode setting unit configured to set an imaging mode for radiation imaging; an information outputting unit configured to output state information on a state of the radiation imaging apparatus; a correction data acquiring unit configured to acquire offset correction data through use of image data acquired in an acquisition mode; an image processing unit configured to correct image data acquired by imaging an object through use of the offset correction data; and a control unit configured to, when the acquisition mode based on the imaging mode coincides with the acquisition mode based on the state information, control the correction data acquiring unit to acquire the offset correction data in the acquisition mode based on the state information. ### Claim 2 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to output the state information on the state of the radiation imaging apparatus based on temperature of the radiation imaging apparatus. ### Claim 3 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to output the state information on the state of the radiation imaging apparatus based on a length of time that has elapsed since the radiation imaging apparatus was powered on. ### Claim 4 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to output the state information on the state of the radiation imaging apparatus based on at least one of a length of time that has elapsed since the radiation imaging apparatus acquired the offset correction data, a length of time that has elapsed since the radiation imaging apparatus captured an exposure image, or a length of time that has elapsed since the radiation imaging apparatus captured a non-exposure image. ### Claim 5 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to output the state information on the state of the radiation imaging apparatus based on how much a residual image remains in an image captured by the radiation imaging apparatus. ### Claim 6 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to output, as the state information, at least one of a warming-up state, an equilibrium state, a temperature varying state, an imaging ready state according to a predetermined acquisition mode, a reliance time elapsed state of the offset correction data, or a residual image remaining state of the radiation imaging apparatus. ### Claim 7 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the control unit is configured to, when the acquisition mode based on the imaging mode and the acquisition mode based on the state information are different from each other, output notice information for notifying that the acquisition modes are different from each other. ### Claim 8 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the information outputting unit is configured to set a threshold based on a temperature change of the radiation imaging apparatus and to compare temperature of the radiation imaging apparatus to the threshold, to thereby output the state information. ### Claim 9 A radiation imaging apparatus comprising a processor coupled to a storage medium programmed to function as: an information outputting unit configured to output state information on a state of the radiation imaging apparatus including temperature of the radiation imaging apparatus; a correction data acquiring unit configured to acquire offset correction data through use of image data acquired in an acquisition mode that is set based on the state information; and an image processing unit configured to correct image data acquired by imaging an object through use of the offset correction data, wherein the information outputting unit is configured to output, as the acquisition mode information based on the state information, an acquisition mode of acquiring the offset correction data through the use of the image data acquired in advance before the imaging of the object, and wherein the correction data acquiring unit is configured to acquire the offset correction data based on the acquisition mode. ### Claim 10 A radiation imaging apparatus comprising a processor coupled to a storage medium programmed to function as: an information outputting unit configured to output state information on a state of the radiation imaging apparatus including temperature of the radiation imaging apparatus; a correction data acquiring unit configured to acquire offset correction data through use of image data acquired in an acquisition mode that is set based on the state information; and an image processing unit configured to correct image data acquired by imaging an object through use of the offset correction data, wherein the information outputting unit is configured to output, as the acquisition mode information based on the state information, an acquisition mode of alternately performing the imaging of the object and the acquisition of the offset correction data through use of the image data acquired after the imaging of the object, and wherein the correction data acquiring unit is configured to acquire the offset correction data based on the acquisition mode. ### Claim 11 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the correction data acquiring unit is configured to acquire the offset correction data through use of a plurality of pieces of the image data. ### Claim 12 A radiation imaging system comprising: a radiation imaging apparatus comprising a processor coupled to a storage medium programmed to function as: an information outputting unit configured to output state information on a state of the radiation imaging apparatus; a correction data acquiring unit configured to acquire offset correction data through use of image data acquired in an acquisition mode that is set based on the state information; and an image processing unit configured to correct image data acquired by imaging an object through use of the offset correction data; a radiation generating apparatus configured to apply radiation to the radiation imaging apparatus; a control apparatus configured to: set the acquisition mode; and display, to a display, a notice of notice information regarding that the acquisition mode that is based on the state information and the acquisition mode that is set for the radiation imaging apparatus are different from each other, and GUI for resetting of the acquisition mode on the same screen. ### Claim 13 (depends on 12) The radiation imaging system according to claim 12, wherein the control apparatus is configured to display an imaging preparation completion notice, the state information and the notice information. ### Claim 14 (depends on 1) The radiation imaging apparatus according to claim 1, wherein the offset correction data is acquired from the image data before or after the imaging of the object, according to the acquisition mode. ### Claim 15 (depends on 1) The radiation imaging apparatus according to claim 1, wherein, when the acquisition mode based on the imaging mode does not coincide with the acquisition mode based on the state information, the control unit configured to control the correction data acquiring unit to acquire the offset correction data in a selected one among the acquisition modes based on the imaging mode and the state information.