Patent ID: 11876549
Assignee: GE PRECISION HEALTHCARE LLC
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 8:
9. A method for determining a SAR value of a magnetic resonance imaging system, the magnetic resonance imaging system comprising a radio-frequency transmitting coil configured to receive radio-frequency power from a radio-frequency transmitting link and transmit radio-frequency power required for imaging to a scanned object, the method comprising:
acquiring a frequency response of a first input reflection coefficient of the radio-frequency transmitting coil when having no load and a frequency response of a second input reflection coefficient thereof when having the scanned object;
determining a resistance value of the radio-frequency transmitting coil on the basis of the frequency response of the first input reflection coefficient, and determining a parallel resistance value of the radio-frequency transmitting coil and the scanned object on the basis of the frequency response of the second input reflection coefficient; and
calculating a SAR value of the scanned object on the basis of the resistance value of the radio-frequency transmitting coil and the parallel resistance value.