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. 29, 2008
Filed:
Jan. 05, 2004
Theodore a Resnick, Beachwood, OH (US);
Theodore A Resnick, Beachwood, OH (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A dose-modulated irradiating system includes an x-ray tube () with at least a filament () for generating electrons, a cathode () and an anode () for accelerating and collimating the generated electrons into an electron beam (), and an electrostatic grid with grid electrodes () for steering the electron beam () on the anode (). The anode () generates an x-ray beam () responsive to the electron beam (). Grid biasing is provided for applying a time-varying electrical bias to the grid electrodes () that produces a first time-varying intensity modulation of the electron beam (). A current of the filament () is modulated to produce a second time-varying intensity modulation of the electron beam (). A controller () controls cooperatively combining the first and second time-varying intensity modulations to produce a combined time-varying intensity modulation.