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:
Sep. 30, 2003
Filed:
Sep. 26, 2002
Randall P. Luhta, Highland Heights, OH (US);
Kevin M. Brown, Mentor on the Lake, OH (US);
Steven J. Utrup, Willoughby, OH (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A third generation CT scanner includes a rotating x-ray source ( ) and a detector array ( ). Each sampling of the detector array generates a source fan data line of data values that are converted ( ) to attenuation values in a logarithmic domain and subject to preliminary corrections ( ). Attenuation values from a plurality of adjoining source fans are converted ( ) back to a non-logarithmic domain as intensity values. A corresponding deconvolution function ( ) from a deconvolution function look-up table ( ) corresponding to the detector whose intensity value is being corrected is deconvolved with a line ( ) of the intensity values which spans a plurality of adjoining source fan data lines to remove the intensity attributable to off-focal radiation ( ). The intensity data is converted ( ) back into attenuation values in the logarithmic domain and reconstructed ( ) into an image representation for display on a monitor ( ).