US 12,402,852 B2
X-ray imaging system and method
Andre Braunagel, Garching (DE); and Thomas Koehler, Norderstedt (DE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 18/272,873
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Jan. 17, 2022, PCT No. PCT/EP2022/050873
§ 371(c)(1), (2) Date Jul. 18, 2023,
PCT Pub. No. WO2022/157114, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 21152312 (EP), filed on Jan. 19, 2021.
Prior Publication US 2024/0090862 A1, Mar. 21, 2024
Int. Cl. A61B 6/00 (2024.01); A61B 6/40 (2024.01); A61B 6/42 (2024.01); G16H 50/20 (2018.01)
CPC A61B 6/5235 (2013.01) [A61B 6/4035 (2013.01); A61B 6/405 (2013.01); A61B 6/4291 (2013.01); A61B 6/482 (2013.01); A61B 6/484 (2013.01); A61B 6/5258 (2013.01); G16H 50/20 (2018.01)] 15 Claims
OG exemplary drawing
 
1. A multi-energy dark-field (DAX) and phase-contrast (PC) X-ray imaging system, comprising:
an imager configured to acquire a plurality of phase-stepped X-ray images at a first set of energy values and at least one X-ray image at a second set of energy values, wherein each energy value of the first set is less than each energy value of the second set; and
a processor configured to:
process the plurality of phase-stepped X-ray images acquired at the first set of energy values using phase retrieval to obtain a first transmission image, a DAX image, and a phase-contrast (PC) image;
process the at least one X-ray image acquired at the second set of energy values to obtain a second transmission image; and
process the first transmission image based on the second transmission image to generate a modified transmission image.