US 11,698,424 B2
MRI scanner with active interference suppression and interference suppression method for an MRI scanner
Stephan Biber, Erlangen (DE); Ian Edward Nichols, Eastleigh (GB); David James Sadler, Hamphire (GB); David Grodzki, Erlangen (DE); and Markus Vester, Nuremberg (DE)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Oct. 27, 2021, as Appl. No. 17/512,177.
Application 17/512,177 is a continuation of application No. 16/753,796, granted, now 11,199,598, previously published as PCT/EP2018/076746, filed on Oct. 2, 2018.
Claims priority of application No. 17194969 (EP), filed on Oct. 5, 2017.
Prior Publication US 2022/0050158 A1, Feb. 17, 2022
Int. Cl. G01R 33/36 (2006.01); A61B 5/055 (2006.01); G01R 33/385 (2006.01); G01R 33/422 (2006.01); G01R 33/48 (2006.01); G01R 33/483 (2006.01); G01R 33/54 (2006.01); G01R 33/56 (2006.01); G01R 33/565 (2006.01); G01R 33/58 (2006.01)
CPC G01R 33/3692 (2013.01) [A61B 5/055 (2013.01); G01R 33/3614 (2013.01); G01R 33/3635 (2013.01); G01R 33/3854 (2013.01); G01R 33/422 (2013.01); G01R 33/4818 (2013.01); G01R 33/4833 (2013.01); G01R 33/543 (2013.01); G01R 33/5608 (2013.01); G01R 33/5659 (2013.01); G01R 33/583 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A magnetic resonance imaging (MRI) scanner comprising:
a patient tunnel;
a first receiving antenna operable to receive a magnetic resonance signal from a patient in the patient tunnel;
a second receiving antenna operable to receive a signal having the Larmor frequency of the magnetic resonance signal; and
a receiver,
wherein the second receiving antenna is arranged outside or in a vicinity of an opening of the patient tunnel,
wherein the receiver is connected to the first receiving antenna and the second receiving antenna for signaling, and the receiver is configured to suppress an interference signal received with the second receiving antenna in a magnetic resonance signal received by the first receiving antenna, and
wherein the receiver is configured to suppress a wideband interference signal received with the second receiving antenna outside a frequency range of the magnetic resonance signal in the magnetic resonance signal received by the first receiving antenna, the suppression of the wideband interference signal comprising:
receipt of a frequency portion of the interference signal close to the Larmor frequency by the receiver via the second receiving antenna;
process of the magnetic resonance signal as a function of the frequency portion of the interference signal by the receiver to a receive signal, wherein a dependency is a function of a parameter; and
set of the parameter by the receiver, so that a portion of the interference signal is reduced in the receive signal.