US 12,245,868 B2
Joint image unfolding apparatus, joint image unfolding method, and joint image unfolding program
Ichiro Sekiya, Tokyo (JP); Nobutake Ozeki, Tokyo (JP); Akinobu Hyodo, Tokyo (JP); Hayato Aoki, Tokyo (JP); Kenji Suzuki, Tokyo (JP); and Jun Masumoto, Tokyo (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Aug. 29, 2021, as Appl. No. 17/460,291.
Application 17/460,291 is a continuation of application No. PCT/JP2020/009880, filed on Mar. 6, 2020.
Claims priority of application No. 2019-054896 (JP), filed on Mar. 22, 2019.
Prior Publication US 2021/0390764 A1, Dec. 16, 2021
Int. Cl. A61B 5/00 (2006.01); G06T 7/00 (2017.01); G06T 7/11 (2017.01); G06T 7/62 (2017.01)
CPC A61B 5/4514 (2013.01) [A61B 5/4528 (2013.01); A61B 5/4585 (2013.01); G06T 7/0012 (2013.01); G06T 7/11 (2017.01); G06T 7/62 (2017.01); G06T 2207/10081 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/10104 (2013.01); G06T 2207/30004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A joint image unfolding apparatus comprising:
at least one processor configured to:
obtain a three-dimensional image of a joint having cartilage,
set, on respective side surfaces of the joint, center positions along a latitudinal direction determined on the basis of an anatomical characteristic of the joint and set an axis that connects the center positions as a reference axis, wherein each of the center positions is a center of an ellipse;
set an anatomical axis along a longitudinal direction that passes through a first center position of the reference axis and a second center position of the joint which is a predetermined distance away from the reference axis along the longitudinal direction;
set a reference plane to coincide with the reference axis and the anatomical axis; and
generate an unfolded image with reference to the reference plane and the reference axis, wherein an angle with respect to the anatomical axis corresponding to a reference position is set to 0 degree for the reference plane.