US 11,726,156 B2
Magnetic resonance tomography with simulation-based interference reduction
Rainer Schneider, Erlangen (DE)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Nov. 30, 2021, as Appl. No. 17/538,321.
Claims priority of application No. 20213418 (EP), filed on Dec. 11, 2020.
Prior Publication US 2022/0187397 A1, Jun. 16, 2022
Int. Cl. G01R 33/421 (2006.01); G01R 33/54 (2006.01)
CPC G01R 33/421 (2013.01) [G01R 33/543 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a magnetic resonance tomography system having a main receiving antenna and at least one auxiliary receiving antenna arranged outside an examination region, the method comprising:
determining, by a computer, at least one simulation signal relating to a temporal and spatial course of a transverse magnetization of an ensemble of nuclear spins of an object with a simulation of a predetermined MR sequence for the object;
determining a resting period of the MR sequence in dependence on the at least one simulation signal, wherein, during the resting period, an absolute value of an expected MR signal amplitude is always less than or equal to a predetermined limit value;
carrying out an MR recording of the object by the magnetic resonance tomography system in accordance with the MR sequence, wherein, during an analysis period corresponding to the resting period, an analysis signal is received in each case by the main receiving antenna and the at least one auxiliary receiving antenna;
determining at least one interference suppression parameter in dependence on the analysis signals;
receiving an MR signal by the main receiving antenna during the MR recording, the MR signal received outside the analysis period;
receiving an interference signal in each case by the at least one auxiliary receiving antenna; and
generating an interference-suppressed MR signal based on the MR signal, the interference signals and the at least one interference suppression parameter.