Image-based motion compensation of image data

US9619869B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Allmendinger · Bad Kötzting, DE
• Herbert Bruder · Hemhofen, DE
• Thomas Flohr · Uehlfeld, DE
• Christopher Rohkohl · Hattingen, DE

Key dates

• Filing date: Aug 12, 2014
• Grant date: Apr 11, 2017
• Expiry date: Feb 22, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2211/436
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method, a computer program, a computer program product and a computed tomography system are disclosed. The image data is a spatially three-dimensional reconstruction. At least one value for an image metric of the image data is determined. A motion field for motion compensation of the image data is then determined on the basis of image data as a function of the image metric. Essentially, partial image data is determined, wherein the partial image data corresponds in each case to the spatially three-dimensional reconstruction from scan data of an angular sub-range. The motion field of the image data is determined at the control points via an optimization method as a function of the image metric, so that, thereafter, the partial image data is transformed in accordance with the motion of the motion field. New image data is then produced by merging the partial image data.