Patent ID: 11860252
Assignee: SIEMENS HEALTHCARE LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A method for operation of a magnetic resonance tomography unit, the method comprising:
receiving information about an excitation signal;
determining, by a transmission interference suppression controller, a transmission interference suppression signal as a function of the information such that on emitting the transmission interference suppression signal via a transmission interference suppression antenna, a field strength of the excitation signal is reduced at a predetermined location;
emitting the transmission interference suppression signal via the transmission interference suppression antenna;
emitting, by a transmitter, a test pulse via the transmitting antenna;
detecting, by a sensor, a field strength produced by the test pulse;
determining, by a transmission interference suppression facility, a transfer function between the transmitting antenna and the sensor, wherein the transmission interference suppression facility includes a plurality of sensors and transmission interference suppression antennas, the plurality of sensors including the sensor and the transmission interference suppression antennas including the transmission interference suppression antenna, wherein the transmission interference suppression antennas are at in each case different locations;
detecting, by the plurality of sensors, the field strength produced by the test pulse;
determining, by the transmission interference suppression facility, a plurality of transfer functions for the plurality of sensors, the plurality of transfer functions including the transfer function;
emitting a predetermined second test pulse with the transmission interference suppression facility via the transmission interference suppression antenna;
detecting, by the plurality of sensors, a field strength produced by the second test pulse;
determining, by the transmission interference suppression facility, a far field transfer function for the transmission interference suppression antenna as a function of the second test pulse and the detected produced field strength;
arranging a calibration antenna at a location at a greater spacing from the transmission interference suppression antenna than the plurality of sensors; and
detecting, by the calibration antenna, a field strength produced by the second test pulse,
wherein determining the transmission interference suppression signal takes place as a function of the plurality of transfer functions, including the transfer function,
wherein the determining of the transmission interference suppression signal takes place as a function of the far field transfer function for the transmission interference suppression antenna and also as a function of the detected field strength of the calibration antenna.