Patent · US Active

Dual-energy tomographic imaging system

US9165384B2 · kind B2 · utility

1Cited by

5References

18Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Ewald Roessl · Ellerau, DE
Thomas Koehler · Norderstedt, DE
Axel Thran · Hamburg, DE

Key dates

Filing date	Dec 29, 2011
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Apr 19, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T2211/424
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention relates to an imaging system (30) for imaging an object. A projection data providing unit (31) provides acquired spectral projection data of an object comprising at least two components, and a reconstruction unit (10) iteratively reconstructs at least two final component images of the object by performing several iteration steps, in which at least two intermediate component images are updated based on the acquired spectral projection data and a penalty term, which is indicative of the correlated noise between the at least two intermediate component images. Since the at least two intermediate component images are updated based on the acquired spectral projection data and a penalty term, which is indicative of the correlated noise, correlated noise is penalized during the iterative reconstruction. The finally resulting component images of the object are therefore less corrupted by correlated noise and have an improved image quality.

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