US 12,406,362 B2
Multi-material decomposition for spectral computed tomography
Ludmila Natanzon, Haifa (IL); and Liran Goshen, Pardes-Hanna (IL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 18/024,595
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Aug. 26, 2021, PCT No. PCT/EP2021/073555
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2022/048976, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 20194623 (EP), filed on Sep. 4, 2020.
Prior Publication US 2023/0360201 A1, Nov. 9, 2023
Int. Cl. G06T 7/00 (2017.01); G06T 11/00 (2006.01)
CPC G06T 7/0012 (2013.01) [G06T 11/008 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20076 (2013.01); G06T 2210/41 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A computer system for spectral material decomposition, comprising:
a memory that stores a plurality of instructions; and
a processor that couples to the memory and is configured to execute the plurality of instructions to:
fit, per patch in input spectral imagery, a set of probability distributions to a respective vector spectral diagram for the respective patch, the patch being one of a plurality of patches in the input spectral imagery, the input spectral imagery obtained by operation of a spectral imaging apparatus, the spectral imagery including at least two energy images, and
combine the probability distributions into a probability map indicative of material type probabilities per image location in the input spectral imagery.