US 12,345,841 B2
Photon flux modulation to improve dynamic range in photon counting detectors
Thomas L. Kelly, Marlborough, MA (US); Cornell Lee Williams, Marlborough, MA (US); Snezana Bogdanovich, Marlborough, MA (US); Robert Gorman, Marlborough, MA (US); and Marc Hansroul, Marlborough, MA (US)
Assigned to Hologic, Inc., Marlborough, MA (US)
Appl. No. 18/245,152
Filed by HOLOGIC, INC., Marlborough, MA (US)
PCT Filed Aug. 31, 2021, PCT No. PCT/US2021/048463
§ 371(c)(1), (2) Date Mar. 13, 2023,
PCT Pub. No. WO2022/066376, PCT Pub. Date Mar. 31, 2022.
Claims priority of provisional application 63/083,154, filed on Sep. 25, 2020.
Prior Publication US 2023/0358904 A1, Nov. 9, 2023
Int. Cl. G01T 1/17 (2006.01); G01T 1/29 (2006.01); G01T 7/04 (2006.01); G01T 1/163 (2006.01)
CPC G01T 1/2971 (2013.01) [G01T 1/17 (2013.01); G01T 7/04 (2013.01); G01T 1/1635 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for performing radiographic scanning, the system comprising:
a photon source configured to emit photons;
a photon counting detector for detecting photons emitted from the photon source after passing through a target, the photon counting detector comprising first pixels having a first size and second pixels having a second size, wherein the first size is greater than the second size;
a first slit aperture positioned between the photon source and the photon counting detector, the first slit aperture having a first slit height; and
a second slit aperture positioned between the photon source and the photon counting detector, the second slit aperture having a second slit height, wherein the second slit height is less than the first slit height.