Patent · US Active

Uncertainty maps for segmentation in the presence of metal artifacts

US9730663B2 · kind B2 · utility

4Cited by

4References

20Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Thomas Koehler · Norderstedt, DE
Holger Schmitt · Berlin, DE
Heinrich Schulz · Hamburg, DE

Key dates

Filing date	Aug 12, 2008
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Oct 19, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30052
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

When performing model-based segmentation on a 3D patient image (80), metal artifacts in the patient image (80), caused by metal in the patient's body, are detected, and a metal artifact reduction technique is performed to reduce the artifact(s) by interpolation projection data in the region of the artifact(s). The interpolated data is used to generate an uncertainty map for artifact-affected voxels in the image, and a mesh model (78) is conformed to the image to facilitate segmentation thereof. Internal and external energies applied to push and pull the model (78) are weighted as a function of the uncertainty associated with one or more voxels in the image (80). Iteratively, mathematical representations of the energies and respective weights are solved to describe an updated model shape that more closely aligns to the image (80).

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