Method and system for registering pre-procedural images with intra-procedural images using a pre-computed knowledge base

US7620223B2 · kind B2 · utility

Assignee

• Siemens Medical Solutions USA, Inc. · US

Inventors

• Chenyang Xu · Allentown, US
• Nassir Navab · Munich, DE
• Frank Sauer · Princeton, US
• Ali Khamene · Princeton, US

Key dates

• Filing date: Apr 13, 2005
• Grant date: Nov 17, 2009
• Expiry date: Nov 29, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/032
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system and method for registering pre-operative images of an object with an intra-operative image of the object is disclosed. Prior to an operative procedure, Digitally Reconstructed Radiographs (DRRs) are generated for the pre-operative images of each individual patient. Signatures are extracted from the DRRs. The signatures are stored in a knowledge base. During the operative procedure, a signature is extracted from the intra-operative image. The intra-operative signature is compared to the stored pre-operative signatures. A pre-operative image having a best signature match to the intra-operative signature is retrieved. The retrieved pre-operative image is registered with the intra-operative image.