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. 24, 2010
Filed:
Jan. 15, 2008
Benno Heigl, Coburg, DE;
Stefan Hoppe, Amberg, DE;
Joachim Hornegger, Effeltrich, DE;
Günter Lauritsch, Erlangen, DE;
Benno Heigl, Coburg, DE;
Stefan Hoppe, Amberg, DE;
Joachim Hornegger, Effeltrich, DE;
Günter Lauritsch, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a method for determining gray-scale values for volume elements of bodies to be mapped using an x-ray image recording system. When a body to be mapped is not mapped in full on a single projection image for a rotational position, a second projection image must be made and a virtual projection image derived from the two projection images, this being back-projected onto the volume elements. For calibration the present invention proposes making the same two projection images in each case at a calibration phantom and additionally a further projection image, corresponding to the position and orientation of the virtual projection image. As a result the mathematical relationships between the projection images and the virtual projection image and for the back-projection can be derived.