Patent · US Active

Reconstruction of an image of a moving object from volumetric data

US7924972B2 · kind B2 · utility

9Cited by

14References

20Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Thomas Koehler · Norderstedt, DE
Michael Grass · Hanstedt, DE
Michael Harald Kuhn · Hamburg, DE
Roland Proksa · Hamburg, DE

Key dates

Filing date	May 26, 2009
Grant date	Apr 12, 2011
Priority date	—
Expiry date	May 26, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06T2211/412
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the object is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image quality may be provided.

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