US 12,076,173 B2
System and method for controlling errors in computed tomography number
Guang-Hong Chen, Madison, WI (US); and Ke Li, Middleton, WI (US)
Assigned to WISCONSIN ALUMNI RESEARCH FOUNDATION, Madison, WI (US)
Filed by WISCONSIN ALUMNI RESEARCH FOUNDATION, Madison, WI (US)
Filed on Oct. 27, 2021, as Appl. No. 17/512,236.
Prior Publication US 2023/0132514 A1, May 4, 2023
Int. Cl. A61B 6/42 (2024.01); A61B 6/00 (2024.01); A61B 6/03 (2006.01); G06T 11/00 (2006.01)
CPC A61B 6/4241 (2013.01) [A61B 6/032 (2013.01); A61B 6/5205 (2013.01); G06T 11/005 (2013.01); G06T 2211/40 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for creating computed tomography (CT) images comprising:
acquiring or accessing sinogram data;
determining a photon count for the sinogram data;
generating unbiased sinogram data from the sinogram data using an unbiased estimator and the photon count; and
reconstructing a CT image from the unbiased sinogram data.