Method for detecting movements and correcting movements in tomographic and projective image series and tomography or projection system for implementing this method

US8194962B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Hendrik Ditt · Annaberg-Buchholz, DE
• Grzegorz Soza · Heroldsberg, DE

Key dates

• Filing date: Sep 19, 2008
• Grant date: Jun 5, 2012
• Expiry date: Apr 6, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30048
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is disclosed for detecting movements and correcting movements in tomographic and projective image series. Further, a tomography or projection system is further disclosed for implementing this method. In at least one embodiment, the temporal changes in an image series with a multiplicity of temporally subsequent image data records are determined and a transformation function for correcting movements is calculated using registration methods, by which movements can be eliminated. To this end, in at least one embodiment a motion detection algorithm recognizes and distinguishes scan volumes and times at which a movement or no movement occurs. Subsequently, in at least one embodiment an algorithm for correcting the movement in those scan volumes in which a movement was detected is implemented, with the correction referring to respectively representative image intervals.