# US 12,594,045 B2 · Calibration jig, mammography apparatus, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,045 B2 - Document ID: US12594045B2 - Status: Granted - Kind: B2 - Application number: 18/604,625 - Filed: 2024-03-14 - Published: 2024-10-03 - Granted: 2026-04-07 - Earliest claimed: 2023-03-30 - Assignees: FUJIFILM Corporation - Applicants: FUJIFILM Corporation - Inventors: Shinichiro Konno; Takashi Tajima - Web page: https://patentgrep.com/patent/US12594045B2 ## CPC - A61B 6/502: {for diagnosis of breast, i.e. mammography} - A61B 6/0414: {with compression means} - A61B 6/12: Arrangements for detecting or locating foreign bodies - A61B 10/0233: {Pointed or sharp biopsy instruments} - A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis - A61B 2034/2046: {Tracking techniques} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A calibration jig is attached to a biopsy apparatus used in combination with a mammography apparatus, and that is for performing calibration to match three-dimensional coordinate systems of the mammography apparatus and the biopsy apparatus, and the calibration jig includes a pseudo biopsy needle that is a pseudo needle of a biopsy needle that is actually used in the biopsy apparatus; and a marker that has a plurality of parts each of which a positional relationship with a needle tip of the pseudo biopsy needle is known. ## Claims ### Claim 1 A calibration jig that is attached to a biopsy apparatus used in combination with a mammography apparatus, and that is for performing calibration to match three-dimensional coordinate systems of the mammography apparatus and the biopsy apparatus, the calibration jig comprising: a pseudo biopsy needle that is a pseudo needle of a biopsy needle that is actually used in the biopsy apparatus; and a marker that has a plurality of parts each of which a positional relationship with a needle tip of the pseudo biopsy needle is known. ### Claim 2 (depends on 1) The calibration jig according to claim 1, wherein the marker is a plurality of markers each having any one of the plurality of parts individually. ### Claim 3 (depends on 1) The calibration jig according to claim 1, wherein a position of the needle tip of the pseudo biopsy needle is different from a position of the marker. ### Claim 4 (depends on 1) The calibration jig according to claim 1, wherein the marker has a spherical shape or a flat plate shape. ### Claim 5 (depends on 1) The calibration jig according to claim 1, further comprising: an opening portion which allows the needle tip of the pseudo biopsy needle to be accessed from an external jig. ### Claim 6 (depends on 5) The calibration jig according to claim 5, wherein the opening portion allows the access from at least two directions. ### Claim 7 (depends on 6) The calibration jig according to claim 6, wherein a direction of the access is a direction different from an axial direction of a straight line connecting the needle tip of the pseudo biopsy needle and the plurality of parts of the marker. ### Claim 8 (depends on 1) The calibration jig according to claim 1, wherein the plurality of parts are positioned on a surface parallel to a radiation detection surface of the mammography apparatus. ### Claim 9 (depends on 1) A mammography apparatus provided with a biopsy apparatus having the calibration jig according to claim 1, a radiation irradiator, and a radiation detector that captures a radiation image using radiation emitted from the radiation irradiator, the mammography apparatus comprising: at least one processor, wherein the processor detects three-dimensional position coordinates of the plurality of parts in the marker of the calibration jig, derives three-dimensional position coordinates of the needle tip of the pseudo biopsy needle using the detected three-dimensional position coordinates of the plurality of parts, and performs calibration to match the derived three-dimensional position coordinates of the needle tip and the three-dimensional position coordinates of the needle tip of the pseudo biopsy needle of the biopsy apparatus. ### Claim 10 (depends on 9) The mammography apparatus according to claim 9, wherein the processor corrects a manufacturing deviation of a positional relationship between the pseudo biopsy needle and the plurality of parts. ### Claim 11 (depends on 9) The mammography apparatus according to claim 9, wherein the processor arranges the marker of the calibration jig in parallel with the radiation detector in a case of detecting the three-dimensional position coordinates of the plurality of parts. ### Claim 12 (depends on 9) The mammography apparatus according to claim 9, wherein the calibration jig is moved in a three-dimensional space by the biopsy apparatus. ### Claim 13 (depends on 9) The mammography apparatus according to claim 9, wherein the calibration jig is for at least one of vertical puncture or lateral puncture. ### Claim 14 (depends on 9) The mammography apparatus according to claim 9, wherein the processor detects the three-dimensional position coordinates of the plurality of parts using a plurality of radiation images obtained by the radiation detector in a state where irradiation directions of the radiation from the radiation irradiator are different. ### Claim 15 (depends on 14) The mammography apparatus according to claim 14, wherein the processor detects the three-dimensional position coordinates of the plurality of parts at a plurality of positions by moving the calibration jig in a three-dimensional space, and derives the three-dimensional position coordinates of the needle tip at the plurality of positions using the detected three-dimensional position coordinates of the plurality of parts. ### Claim 16 (depends on 15) The mammography apparatus according to claim 15, wherein the processor performs the calibration using the derived three-dimensional position coordinates of the needle tip at the plurality of positions. ### Claim 17 (depends on 1) A non-transitory storage medium storing a program executed in a mammography apparatus provided with a biopsy apparatus having the calibration jig according to claim 1, a radiation irradiator, and a radiation detector that captures a radiation image using radiation emitted from the radiation irradiator, the program causing a computer to execute: detecting three-dimensional position coordinates of the plurality of parts in the marker of the calibration jig, deriving three-dimensional position coordinates of the needle tip of the pseudo biopsy needle using the detected three-dimensional position coordinates of the plurality of parts, and performing calibration to match the derived three-dimensional position coordinates of the needle tip and the three-dimensional position coordinates of the needle tip of the pseudo biopsy needle of the biopsy apparatus.