US 7,599,464 B2 · Method and computed tomography system for producing tomograms of an object

Abstract

A method and a computed tomography system are disclosed for producing computed tomograms of an object. A set of detector output data that represent beams over a specific angular range and a scan of a specific subregion of the object, are divided into m≧2 complete partial detector output data records that respectively cover the same complete angular range, but are reduced with their sampling density by 1/m and have mutually independent data records. Intermediate image data records (m records) that represent the identical object region are reconstructed from the m complete partial detector output data records. A correlation analysis is carried out between the m intermediate image data records. Finally, an image data record is produced that consists only of correlated data and includes no uncorrelated data.

Claims19

Dependent claims

A method for producing an image data record of an object, comprising:

rotating, in order to scan the object, at least one X-ray tube relative to the object;
detecting, via at least one detector, an attenuation of X-radiation during the rotation of the at least one X-ray tube and outputting detector output data;
dividing a set of detector output data, representing beams over a specific angular range and scanning a specific subregion of the object, into m≧2 complete partial detector output data records respectively covering a same complete angular range, but reduced with their sampling density by 1/m and including mutually independent data records;
reconstructing m intermediate image data records, representing an identical object region, from the m complete partial detector output data records;
carrying out a correlation analysis between the m intermediate image data records;
and
producing an image data record that includes only correlated data and that includes no uncorrelated data.

4 more elements

Dependencies are inferred from the claim text.

Method and computed tomography system for producing tomograms of an object

Life of this patent

Method and computed tomography system for producing tomograms of an object

Life of this patent

Abstract

Claims19