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:
Aug. 11, 2026
Filed:
Sep. 10, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus for performing automatic exposure control in a computed tomography (CT) imaging system including an X-ray source is provided. The apparatus includes processing circuitry configured to acquire helical scan data from a scout scan performed on a first imaging object, determine a target noise standard deviation (STD) for an imaging scan to be performed on the first imaging object after the scout scan, retrieve a pre-stored attenuation-noise-dose relationship relating attenuation of X-rays from the X-ray source that pass through a second imaging object, noise present in reconstructed images of the second imaging object, and tube current values applied to the X-ray source, use the acquired helical scan data and the determined target noise STD to generate a tube current modulation curve, based on the retrieved attenuation-noise-dose relationship, and perform the imaging scan on the first imaging object using the generated tube current modulation curve.