US 12,419,600 B2
Subtraction imaging
Raoul Florent, Ville d'Avray (FR); Claire Levrier, Rueil-Malmaison (FR); Christian Haase, Hamburg (DE); and Haithem Boussaid, Chatenay Malabry (FR)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 18/282,595
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Mar. 14, 2022, PCT No. PCT/EP2022/056447
§ 371(c)(1), (2) Date Sep. 18, 2023,
PCT Pub. No. WO2022/200089, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 21290018 (EP), filed on Mar. 23, 2021.
Prior Publication US 2024/0164733 A1, May 23, 2024
Int. Cl. G06T 7/00 (2017.01); A61B 6/00 (2006.01); A61B 6/50 (2024.01)
CPC A61B 6/504 (2013.01) [A61B 6/481 (2013.01); A61B 6/5258 (2013.01); G06T 7/00 (2013.01); G06T 2207/10116 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device for digital subtraction imaging, the device comprising:
a processor configured to
receive 3D image data of a region of interest of an object, wherein the 3D image data comprises a 3D representation of the object that is based on a reconstruction from a plurality of 2D projection images of the region of interest;
receive a 2D live X-ray image of the region of interest;
register the 3D image data and the 2D live X-ray image, wherein a matching pose of the 3D image data corresponding to the 2D live X-ray image is determined to compute a digitally reconstructed radiography from the 3D image data based on the determined matching pose to generate a 2D mask image and to use, for the generating of the 2D mask image, current data related to the 2D live X-ray image to achieve an adapted 2D mask image, wherein the data related to the 2D live X-ray image comprises at least one of 2D live acquisition parameters or data of the 2D live X-ray image;
subtract the generated adapted 2D mask image from the 2D live X-ray image; and
provide a digital image highlighting changes in the region of interest.