Method for creating a motion correction for PET data, a method for creating PET images as well as a correspondingly embodied MR system and PET system

US10267884B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Simon Bauer · Baunach, DE
• Isabel Dregely · Munich, DE
• Sebastian Fürst · Munich, DE
• Robert Grimm · Nuremberg, DE
• Berthold Kiefer · Erlangen, DE
• Marcel Dominik Nickel · Herzogenaurach, DE

Key dates

• Filing date: Mar 26, 2014
• Grant date: Apr 23, 2019
• Expiry date: Dec 30, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H30/40
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method is disclosed for creating a motion correction for PET data acquired by a PET system from a volume segment of an examination object. The method includes acquisition of MR data within the volume segment by the magnetic resonance system; and determination of a motion model of a motion within the volume segment as a function of the MR data. The motion model, as a function of a respective motion state of the motion, provides a correction specification for PET data which is acquired during this motion state. During acquisition of the MR data, specific MR data is acquired in the center of the k-space or of a straight-line segment which passes through the center of the k-space. The MR data determined is converted by a mathematical function into one value, as a function of which the respective motion state is determined.