Verfahren zur Verringerung der Auswirkungen der B0-Inhomogenität in der Magnetresonanztomographie

Details

Veröffentlichungs-Nr.

EP3845919

Aktenzeichen

EP20150158

Anmeldetag

3. Januar 2020

Veröffentlichung

23. April 2025

Erteilung

23. April 2025

Rechtsraum

EP

IPC

G01R33/46G01R33/483G01R33/50G01R33/561G01R33/565// G01R33/28G01R33/48G01R33/58

Abstract

The invention relates to a method (12) and a device (1) for reducing sensitivity on B<0>-variation in Magnetic Resonance Imaging (MRI) of a subject (2) using a spoiled gradient echo sequence, in particular in quantitative MRI based on MR fingerprinting (MRF), without requiring additional dephasing gradients. In the method (12) a B<0> magnetic field strength of at most 1.5 T is used during the sequence. As part of the sequence a slice select gradient acting as a spoil gradient is played out. Substantially simultaneously with the slice select gradient a predetermined RF pulse is played out in the sequence, wherein a time-bandwidth product of the RF pulse is set so that a majority of the energy of the RF pulse is transmitted in its central main lobe.

Anmelder

Firmen

Siemens Healthineers AG
Siemens Healthcare GmbH

Land

🇩🇪 Deutschland

Fachgebiete