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:
Jul. 03, 2012
Filed:
Dec. 12, 2008
Dominic J. Heuscher, Aurora, OH (US);
Felix Godfried Peter Peeters, Heide, NL;
Dominic J. Heuscher, Aurora, OH (US);
Felix Godfried Peter Peeters, Heide, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
When performing a fly-by or helical CT scan of a subject, radiation dose is limited by positioning a dynamic collimator () between the subject and an X-ray source (). The collimator moves axially with the X-ray source () along a volume of interest (VOI) () in the subject and gradually opens, such that a narrow portion of the cone beam of X-rays is permitted to pass through the collimator () at ends of the VOI () and a wider full cone beam is emitted at central portions of the VOI (). In this manner, tissue surrounding the VOI () is not needlessly exposed to X-rays, as would be the case if a full-width cone beam were used for the entire scan of the VOI ().