US 12,329,561 B2
X-ray imaging system
Paul Scott, Sedgefield (GB); Neil Loxley, Sedgefield (GB); and Adam Ratcliffe, Sedgefield (GB)
Assigned to Ibex Innovations Limited, Durham (GB)
Filed by Ibex Innovations Limited, Sedgefield (GB)
Filed on Apr. 15, 2024, as Appl. No. 18/635,414.
Application 18/635,414 is a continuation of application No. 17/271,722, granted, now 11,992,356, previously published as PCT/GB2019/052439, filed on Aug. 30, 2019.
Claims priority of application No. 1814238 (GB), filed on Aug. 31, 2018.
Prior Publication US 2024/0268779 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 7/70 (2017.01); A61B 6/00 (2006.01); G06T 3/4007 (2024.01); G06T 5/70 (2024.01); G06T 7/00 (2017.01)
CPC A61B 6/5282 (2013.01) [G06T 3/4007 (2013.01); G06T 5/70 (2024.01); G06T 7/0014 (2013.01); G06T 2207/10116 (2013.01); G06T 2207/20224 (2013.01); G06T 2207/30004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of performing scatter correction on an X-ray image, comprising:
obtaining an input image for processing based on a source X-ray image of a sample acquired using an X-ray detector;
determining a model of the sample based on the input image, wherein the model comprises, for each of a plurality of locations, each location corresponding to at least one pixel of the input image, a thickness value indicating a thickness of the sample at the location and a material value indicative of a material composition of the sample at the location;
evaluating the model by a process comprising:
computing, based on the model, simulated X-ray image data;
evaluating the simulated image data against the input image to determine whether a convergence criterion is fulfilled; and
generating an updated model of the sample with updated thickness and material values if the convergence criterion is not fulfilled;
the method comprising repeating the model evaluating process based on one or more successive updated models to iteratively refine the thickness and material values of the model until the convergence criterion is fulfilled in a final iteration; and
performing at least one of:
performing scatter correction on the source X-ray image using simulated image data computed during the final iteration; and
outputting composition information for the sample based on the model of the sample used to generate the simulated image data determined to meet the convergence criterion during the final iteration.