Verfahren und System zur Synchronisierung einer Exzentrischen Rotationsmasse mit einer Magnetresonanzelastographieabtastung

Details

Veröffentlichungs-Nr.

EP4249935

Aktenzeichen

EP23163001

Anmeldetag

21. März 2023

Veröffentlichung

24. September 2025

Erteilung

24. September 2025

Rechtsraum

EP

IPC

G01R33/563A61B5/055B06B1/16// A61B5/00B06B1/18

Abstract

A method for synchronizing a rotational eccentric mass of a gravitational transducer used for a magnetic resonance elastography acquisition with a corresponding magnetic resonance elastography scan carried out by a magnetic resonance imaging system, wherein the rotation of the eccentric mass is driven by a shaft, the method comprising the steps:(a) starting the rotation of the eccentric mass at a set vibration frequency and the magnetic resonance elastography scan at a set acquisition frequency; (b) determining the rotational position of the shaft; (c) defining the determined rotational position as first reference position; (d) calculating further reference positions, wherein the further reference positions may be the same as the first reference position, or may alternate between several positions; (e) at the start time of each subsequent acquisition period, determining the current rotational position of the shaft; (f) comparing the determined current rotational position with the theoretically expected reference position and decreasing or increasing the rotational speed of the rotational eccentric mass based on the comparison.

Anmelder

Firmen

Siemens Healthineers AG
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS
INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE - INSERM
King's College London
The United States of America, as Represented By the Secretary, Department of Health and Human Services
Université Paris XIII Paris-Nord
Université Paris Cité
Univ Paris XIII Paris-Nord Villetaneuse
Kings College London
Siemens Healthcare GmbH

Land

🇩🇪 Deutschland

Fachgebiete