Retrospective MRI image distortion correction

US9679373B2 · kind B2 · utility

Assignee

• Brainlab AG · DE

Inventors

• Stefan Vilsmeier · Munich, DE
• Rainer Lachner · Munich, DE

Key dates

• Filing date: Feb 3, 2011
• Grant date: Jun 13, 2017
• Expiry date: Feb 2, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30016
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for correcting MRI image distortion, in which a distortion correction procedure is carried out on an acquired MRI image data set (1) of a body region by graphical data processing, characterized in that: —after the MRI image data set (1) has been acquired, its distortion is determined by carrying out an image registration process for registering the acquired MRI image data set (1) to a previously available, less distorted or undistorted image data set (2) of substantially the same body region; —a transformation is determined from the image registration process; and —by applying the transformation to the MRI image data set (1), its distortion is corrected.