CPC G01R 33/443 (2013.01) [G01R 33/3614 (2013.01); G01R 33/4835 (2013.01); G01R 33/543 (2013.01)] | 20 Claims |
1. A method for a magnetic resonance imaging (MM) system, comprising:
setting a reference value of transmit attenuation for an amplifier of a transmit radio frequency (RF) coil;
acquiring a three-dimensional B1 field map with the transmit attenuation set at the reference value;
determining a plurality of mean flip angles for a plurality of slice locations in a pre-scan imaging volume from the B1 field map;
determining a transmit attenuation correction value for each of the slice locations based on a prescribed flip angle and the mean flip angle determined for the respective slice location;
correcting the reference value of transmit attenuation with the transmit attenuation correction value at each of the slice locations to obtain a final value of transmit attenuation for each of the slice locations; and
performing an MRI scan with the transmit attenuation set at the final value.
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