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:
Oct. 04, 2011
Filed:
Nov. 30, 2007
Axel Thran, Hamburg, DE;
Jens-peter Schlomka, Hamburg, DE;
Axel Thran, Hamburg, DE;
Jens-Peter Schlomka, Hamburg, DE;
Abstract
The invention relates to a beam filter () that can particularly be used in spectral CT-applications for producing a desired intensity profile of a radiation beam without changing its spectral composition. In a preferred embodiment, the beam filter () comprises a stack of absorbing sheets () that are separated by wedge-shaped spaces () and focused to a radiation source (). Furthermore, the absorbing sheets have a varying width in direct ion of the radiation. Different fractions of the radiation source () area are therefore masked by the beam filter () at different points (A, B) on a detector area (). The absorbing sheets preferably comprise a material that is highly absorbing for the radiation to be filtered.