Title: Method and tomography unit for the reconstruction of a tomographic representation of an object
Application Number: 200610142407 Application Date: 2006.10.24
Publication Number: 1957847 Publication Date: 2007.05.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A61B6/03;A61B5/055;A61B8/00;A61B5/00;G06T5/10
Applicant(s) Name: Siemens AG Address:
Inventor(s) Name: Hoheisel Martin;Harer Wolfgang;Kunze Holger;Stiers
Attorney & Agent: shaoya li lixiao shu
Abstract:
    A method is disclosed for reconstructing a tomographic representation of an object from projection data off a moving radiation source through this object onto a detector, filtering and back projection of the projection data being executed in the reconstruction. In an embodiment of the method, by using at least one identical spatial arrangement of the radiation source, the detector and a test object instead of the object to be scanned, there is determined by test projections and an iterative reconstruction technique, a filter that in the given arrangement results in an optimum filtering and back projection of the projection data of the test object for the tomographic representation. Further, the object is scanned instead of the test object in the given arrangement and projection data are determined. Finally, the reconstruction of the tomographic representation is carried out using these projection data and the filter determined. Moreover, an embodiment of a tomography unit for carrying out this method is also disclosed.
Time: 19