Patent · US Active

Iterative CT image reconstruction with a four-dimensional noise filter

US8600137B2 · kind B2 · utility

3Cited by

2References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Bruder · Hemhofen, DE
Rainer Raupach · Heroldsbach, DE
Karl Stierstorfer · Erlangen, DE

Key dates

Filing date	May 19, 2011
Grant date	Dec 3, 2013
Priority date	—
Expiry date	Apr 16, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T2211/424
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method is disclosed for reconstruction of image data of an object under examination from measurement data, with the measurement data having been captured during a relative rotational movement between a radiation source of a computed tomography system and the object under examination. In at least one embodiment, first image data is computed by the measurement data being modified to obtain a specific gray value characteristic of the first image data to be reconstructed and the first image data is computed by way of an iterative algorithm using the modified measurement data. Second image data is also computed by a series of chronologically-consecutive images being reconstructed and processing being carried out on the series of images to reduce temporal noise. Finally a combination of the first and the second image data is carried out.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.