Cortical bone segmentation from MR Dixon data

US9659370B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Christian Buerger · Hamburg, DE
• Irina Waechter-Stehle · Hamburg, DE
• Jochen Peters · Norderstedt, DE
• Eberhard Sebastian Hansis · Hamburg, DE
• Frank Michael Weber · Hamburg, DE
• Tobias Klinder · Uelzen, DE
• Steffen Renisch · Eindhoven, NL

Key dates

• Filing date: Jun 19, 2014
• Grant date: May 23, 2017
• Expiry date: Jul 26, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30061
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

The present invention relates to a method for segmenting MR Dixon image data. A processor and a computer program product are also disclosed for use in connection with the method. The invention finds application in the MR imaging field in general and more specifically may be used in the generation of an attenuation map to correct for attenuation by cortical bone during the reconstruction of PET images. In the method, a surface mesh is adapted to a region of interest by: for each mesh element in the surface mesh: selecting a water target position based on a water image feature response in the MR Dixon water image; selecting a fat target position based on a fat image feature response in the MR Dixon fat image; and displacing each mesh element from its current position to a new position based on both its water target position and its corresponding fat target position.