US 12,016,718 B2
Apparatus and methods for image quality improvement based on noise and dose optimization
Ting Xia, Vernon Hills, IL (US); Liang Cai, Vernon Hills, IL (US); Jian Zhou, Vernon Hills, IL (US); and Zhou Yu, Vernon Hills, IL (US)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed on Mar. 11, 2022, as Appl. No. 17/692,697.
Prior Publication US 2023/0284997 A1, Sep. 14, 2023
Int. Cl. A61B 6/00 (2024.01); A61B 6/02 (2006.01); A61B 6/03 (2006.01); G06T 11/00 (2006.01)
CPC A61B 6/544 (2013.01) [A61B 6/5258 (2013.01); G06T 11/008 (2013.01); A61B 6/025 (2013.01); A61B 6/032 (2013.01); G06T 2200/04 (2013.01); G06T 2210/41 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling X-ray emissions during three-dimensional X-ray imaging, the method comprising:
obtaining a projection data set acquired in a first three-dimensional X-ray scan of a three-dimensional region of an object;
obtaining a spatially-distributed characteristic of the projection data set, wherein the spatially-distributed characteristic is distributed in a longitudinal direction of the first three-dimensional X-ray scan; and
controlling X-ray emissions of the three-dimensional region during a second three-dimensional X-ray scan based on the spatially-distributed characteristic of the projection data.