US 11,854,123 B2
Sparse background measurement and correction for improving imaging
Chuanyong Bai, Solon, OH (US); Robert Zahn, Chagrin Falls, OH (US); Daniel Gagnon, Twinsburg, OH (US); Amit Jain, Solon, OH (US); Zhicong Yu, Highland Hts., OH (US); and Georgios Prekas, Solon, OH (US)
Assigned to Accuray, Inc., Sunnyvale, CA (US)
Filed by Accuray, Inc., Sunnyvale, CA (US)
Filed on Jul. 23, 2021, as Appl. No. 17/383,740.
Prior Publication US 2023/0026441 A1, Jan. 26, 2023
Int. Cl. G06T 11/00 (2006.01); A61B 6/00 (2006.01); A61B 6/02 (2006.01); A61B 6/03 (2006.01)
CPC G06T 11/005 (2013.01) [A61B 6/027 (2013.01); A61B 6/032 (2013.01); A61B 6/4085 (2013.01); A61B 6/4435 (2013.01); A61B 6/54 (2013.01); G06T 2211/408 (2013.01)] 38 Claims
OG exemplary drawing
 
1. An imaging system comprising:
a first x-ray source configured to:
produce first x-ray photons in a first energy range suitable for imaging;
project the first x-ray photons onto an area designated for imaging;
a rotatable gantry configured to rotate the first x-ray source such that the first x-ray source traverses an angular path; and
a data processor having an analytical portion configured to:
collect first data relating to the transmission of the first x-ray photons through the area designated for imaging at a set of image-collection angles along the angular path;
collect background data at a set of background-collection angles along the angular path, wherein the system acquires more than one image of the designated area for imaging between background angles;
remove errors in the first data using the background data; and
generate a corrected image based on the removal of errors in the first data.