Method and apparatus for correcting motion in image reconstruction

US7782998B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• David Allen Langan · Clifton Park, US
• Peter Michael Edic · Albany, US
• Abdalmajeid Alyassin · Niskayuna, US
• Bernhard Erich Hermann Claus · Niskayuna, US
• Joseph Manak · Vernon Hills, US
• James Vradenburg Miller · Clifton Park, US

Key dates

• Filing date: Dec 21, 2004
• Grant date: Aug 24, 2010
• Expiry date: Jan 3, 2027

Classification

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

Abstract

A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.