US 12,376,812 B2
Methods and apparatus for dual energy X-ray imaging
Mike Sattarivand, Halifax (CA); and Michael Reno, Halifax (CA)
Assigned to DALHOUSIE UNIVERSITY, Halifax (CA)
Appl. No. 17/252,682
Filed by DALHOUSIE UNIVERSITY, Halifax (CA)
PCT Filed May 6, 2019, PCT No. PCT/CA2019/050600
§ 371(c)(1), (2) Date Dec. 15, 2020,
PCT Pub. No. WO2019/237179, PCT Pub. Date Dec. 19, 2019.
Claims priority of provisional application 62/685,776, filed on Jun. 15, 2018.
Prior Publication US 2021/0267563 A1, Sep. 2, 2021
Int. Cl. A61B 6/00 (2024.01); A61B 6/03 (2006.01); A61B 6/40 (2024.01); A61B 6/50 (2024.01); G06T 5/50 (2006.01); G06T 5/70 (2024.01)
CPC A61B 6/482 (2013.01) [A61B 6/032 (2013.01); A61B 6/40 (2013.01); A61B 6/505 (2013.01); A61B 6/5235 (2013.01); G06T 5/50 (2013.01); G06T 5/70 (2024.01); G06T 2207/10116 (2013.01); G06T 2207/30061 (2013.01); G06T 2207/30096 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for dual energy x-ray imaging, the method comprising:
acquiring first and second images of a tissue region comprising a first tissue type having a first density and a second tissue type having a second density, the first image corresponding to a first radiation beam having a first energy spectrum and the second image corresponding to a second radiation beam having a second energy spectrum different from the first energy spectrum; and
combining the first and second images to generate a combined image by, separately for each of multiple parts of the first and second images, determining a weighting factor corresponding to the part based on determining a thickness of tissue of each of at least two classes corresponding to the part and pixelwise combining the first and second images using the weighting factors,
wherein each of the parts of the first and second images is one pixel.