Attenuation correction of PET data of moving object

US11246552B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Sven Kabus · Hamburg, DE
• Andre Frank Salomon · Aachen, DE

Key dates

• Filing date: Nov 7, 2018
• Grant date: Feb 15, 2022
• Expiry date: Feb 5, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T11/005
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a system and a method for assisting in attenuation correction of gated PET data of a moving object (2). In the system, an evaluation unit (15) is configured to (i) receive a CT image of the object (2) and to segment the CT image into a plurality of CT sub-images, each CT sub-image correspond to an axial segment of an imaged volume, (ii) to determine for each CT sub-image a gate including PET data having a greatest correspondence with the CT sub-image, (iii) to construct, for each CT sub-image, a PET sub-image from the PET data included in the gate determined for the CT sub-image, the PET sub-image substantially corresponding to the same axial segment of the imaged volume as the CT sub-image, and (iv) to combine the PET sub-images to form a PET reference image of the object (2).