Model-based extension of field-of-view in nuclear imaging

US8989845B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Ralph Brinks · Hagen, DE
• Eike Gerhard Gegenmantel · Aachen, DE

Key dates

• Filing date: Jan 12, 2010
• Grant date: Mar 24, 2015
• Expiry date: Sep 10, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01T1/1611
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A CT imaging system (12) generates structural data of a first FOV which is reconstructed by a CT reconstruction processor (52) into a CT image representation. A nuclear imaging system acquires functional data from a second FOV which is smaller than the first FOV. A first PET reconstruction processor (60) reconstructs the functional data into a PET image representation. A fusion processor (64) combines the PET image representation with a map extracted from the CT image representation to generate an extended FOV image representation. A spill-over correction unit (66) and a backscatter correction unit (68) derive spill-over correction data and backscatter correction data from the extended FOV image representation. A reconstruction processor (70) generates a spill-over and backscatter corrected functional image representation based on the spill-over correction data, the backscatter correction data, and the functional data.