Monitoring of a temporal change in a magnetic field in a magnetic resonance device

US10663538B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Wolfgang Bielmeier · Erlangen, DE
• Gerhard Brinker · Erlangen, DE
• Swen Campagna · Engelthal, DE
• Nikolaus Demharter · Dormitz, DE
• Bernd Erbe · Lauf an der Pegnitz, DE
• Matthias Gebhardt · Erlangen, DE
• Helmut Lenz · Tutzing, DE
• Jürgen Nistler · Erlangen, DE
• Dominik Paul · Bubenreuth, DE
• Carsten Prinz · Baiersdorf, DE
• Gudrun Ruyters · Erlangen, DE
• Stephan Stöcker · Baiersdorf, DE
• Markus Vester · Koblenzer Straße, DE

Key dates

• Filing date: Sep 9, 2017
• Grant date: May 26, 2020
• Expiry date: Apr 28, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/385
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for monitoring a temporal change in a magnetic field in a magnetic resonance device, as well as an evaluation unit, a magnetic resonance device, and a computer program product for performing the method are provided. The method provides that a position-dependent magnetic field distribution that is produced by the plurality of gradient coils is provided with a plurality of monitoring points. In addition, time-dependent gradient values of the plurality of gradient coils are ascertained. Based on position-dependent magnetic field distribution and the time-dependent gradient values, the temporal change in the magnetic field is ascertained. The temporal change in the magnetic field is monitored by comparing the temporal change in the magnetic field with at least one limit value.