US 12,066,390 B2
Estimating background radiation from unknown sources
Mingshan Sun, Menlo Park, CA (US); Josh Star-Lack, Palo Alto, CA (US); and Kevin Holt, Chicago, IL (US)
Assigned to Varex Imaging Corporation, Salt Lake City, UT (US)
Filed by Varex Imaging Corporation, Salt Lake City, UT (US)
Filed on Aug. 4, 2021, as Appl. No. 17/394,253.
Claims priority of provisional application 63/060,988, filed on Aug. 4, 2020.
Prior Publication US 2022/0042932 A1, Feb. 10, 2022
Int. Cl. G01N 23/046 (2018.01); G01T 1/29 (2006.01)
CPC G01N 23/046 (2013.01) [G01T 1/2921 (2013.01); G01N 2223/419 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving measured radiation obtained from a radiation detector that received radiation through an object;
simulating the measured radiation obtained from the radiation detector that received radiation through the object;
generating an offset based on the measured radiation and the simulated measured radiation;
estimating scatter radiation based on the offset; and
estimating primary radiation based on the estimated scatter radiation.