The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
May. 12, 2023
Applicant:
Canon Medical Systems Corporation, Tochigi, JP;
Inventors:
Xiaohui Zhan, Vernon Hills, IL (US);
Ruoqiao Zhang, Vernon Hills, IL (US);
Cameron Clarke, Vernon Hills, IL (US);
Yi Qiang, Vernon Hills, IL (US);
Assignee:
CANON MEDICAL SYSTEMS CORPORATION, Tochigi, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61B 6/58 (2024.01); A61B 6/00 (2024.01); A61B 6/03 (2006.01); A61B 6/42 (2024.01); G01T 1/24 (2006.01); G01T 7/00 (2006.01);
U.S. Cl.
CPC ...
A61B 6/585 (2013.01); A61B 6/032 (2013.01); A61B 6/4241 (2013.01); A61B 6/5205 (2013.01); G01T 1/247 (2013.01); G01T 7/005 (2013.01);
Abstract
An apparatus and a method for detection of defective pixels for a photon-counting detector-based computed tomography (CT) system is disclosed. In particular, the apparatus and the method disclosed herein, detect detector pixels that have intermittent behavior using on-the-fly defective pixel screening based on various criteria during an object scan. The defective pixels are discarded using a defective pixel map before image reconstruction.