Verfahren und Vorrichtung zum Erfassen einer Bewegung eines Probanden in einem Magnetischen Resonanzbilgebungsgerät

Details

Veröffentlichungs-Nr.

EP3895610

Aktenzeichen

EP20170061

Anmeldetag

17. April 2020

Veröffentlichung

9. November 2022

Erteilung

9. November 2022

Rechtsraum

EP

IPC

A61B5/055A61B5/11G01R33/36

Abstract

The invention relates to a method and system for detecting movement of a subject (30) inside a magnetic resonance imaging device, the method comprising the steps of (a) providing at least one input signal (10, 12); (b) using the at least one input signal (12) to generate a higher pilot tone signal (16) having a transmission frequency which is at least twice as high as the Larmor frequency of the magnetic resonance imaging device; (c) transmitting the higher pilot tone signal (16) towards the subject (30) using a transmitting antenna (26); (d) receiving the transmitted higher pilot tone signal (18) using a receiving antenna (28); (e) using the at least one input signal (12) to convert the frequency of the transmitted higher pilot tone signal (18) to an intermediate frequency which is equal to or lower than the frequency of the input signal (12); and (f) forwarding the transmitted pilot tone signal (20) to an analysis system (32) to detect changes in the transmitted pilot tone signal (20) caused by movement of the subject (30).

Anmelder

Firma

Siemens Healthcare GmbH

Land

🇩🇪 Deutschland

Fachgebiete