US 12,360,064 B1
Method for capture of small-angle scatter over wide fields of view
Joel Alter Greenberg, Durahm, NC (US); Michael Eric Gehm, Hillsborough, NC (US); Anuj Jawahar Kapadia, Knoxville, TN (US); and David Scott Coccarelli, Chapel Hill, NC (US)
Assigned to Quadridox, Inc., Hillsborough, NC (US); and Duke University, Durham, NC (US)
Filed by Quadridox, Inc., Hillsborough, NC (US); and Duke University, Durham, NC (US)
Filed on Feb. 28, 2025, as Appl. No. 19/066,471.
Application 19/066,471 is a continuation of application No. PCT/US2024/019390, filed on Mar. 11, 2024.
Claims priority of provisional application 63/451,584, filed on Mar. 11, 2023.
Int. Cl. G01N 23/00 (2006.01); G01N 23/046 (2018.01); G01N 23/20025 (2018.01); G01N 23/201 (2018.01)
CPC G01N 23/201 (2013.01) [G01N 23/046 (2013.01); G01N 23/20025 (2013.01); G01N 2223/401 (2013.01); G01N 2223/601 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of determining estimated coherent scatter form factors for at least some model items (204, 208, 212, 216, 220) within a scan object (70, 200, 390), the method comprising:
advancing the scan object in a Y direction through a coherent scatter scanner (320);
exposing a series of slices of the scan object to an X-ray fan beam (12) that is in a fixed location within the coherent scatter scanner and oriented perpendicular to the Y direction of travel of the scan object;
capturing coherent scatter data at a set of at least two X-ray detector modules (50, 52, 54, 56) wherein:
each X-ray detector module in a fixed position relative to the coherent scatter scanner;
each X-ray detector module limited to a small-angle field of view of not more than 15 degrees in a direction parallel to a plane containing the X-ray fan beam by at least one detector-side angle limiting element (104, 106, 108, 120); and
at least two of the set of at least two X-ray detector modules are positioned on a first side of the X-ray fan beam, with each of set of at least two-X-ray detector modules on the first side of the X-ray fan beam seeing diffractions from different portions (150, 152, 154, 160, 162) of the X-ray fan beam; and
combining the coherent scatter data from the at least two x-ray detector modules with a separate model of aggregate items that clusters sets of voxels in the scan object into model items to map estimated material coherent scatter form factors to at least some model items (204, 208, 212, 216, 220).